+
+
@@ -3196,6 +3206,9 @@
+
+
+
@@ -3205,6 +3218,7 @@
+
diff --git a/libs/OrbitControls.js b/libs/OrbitControls.js
new file mode 100644
index 00000000..236df576
--- /dev/null
+++ b/libs/OrbitControls.js
@@ -0,0 +1,1172 @@
+/**
+ * @author qiao / https://github.com/qiao
+ * @author mrdoob / http://mrdoob.com
+ * @author alteredq / http://alteredqualia.com/
+ * @author WestLangley / http://github.com/WestLangley
+ * @author erich666 / http://erichaines.com
+ * @author ScieCode / http://github.com/sciecode
+ */
+
+// This set of controls performs orbiting, dollying (zooming), and panning.
+// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
+//
+// Orbit - left mouse / touch: one-finger move
+// Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
+// Pan - right mouse, or left mouse + ctrl/meta/shiftKey, or arrow keys / touch: two-finger move
+
+THREE.OrbitControls = function ( object, domElement ) {
+
+ if ( domElement === undefined ) console.warn( 'THREE.OrbitControls: The second parameter "domElement" is now mandatory.' );
+ if ( domElement === document ) console.error( 'THREE.OrbitControls: "document" should not be used as the target "domElement". Please use "renderer.domElement" instead.' );
+
+ this.object = object;
+ this.domElement = domElement;
+
+ // Set to false to disable this control
+ this.enabled = true;
+
+ // "target" sets the location of focus, where the object orbits around
+ this.target = new THREE.Vector3();
+
+ // How far you can dolly in and out ( PerspectiveCamera only )
+ this.minDistance = 0;
+ this.maxDistance = Infinity;
+
+ // How far you can zoom in and out ( OrthographicCamera only )
+ this.minZoom = 0;
+ this.maxZoom = Infinity;
+
+ // How far you can orbit vertically, upper and lower limits.
+ // Range is 0 to Math.PI radians.
+ this.minPolarAngle = 0; // radians
+ this.maxPolarAngle = Math.PI; // radians
+
+ // How far you can orbit horizontally, upper and lower limits.
+ // If set, must be a sub-interval of the interval [ - Math.PI, Math.PI ].
+ this.minAzimuthAngle = - Infinity; // radians
+ this.maxAzimuthAngle = Infinity; // radians
+
+ // Set to true to enable damping (inertia)
+ // If damping is enabled, you must call controls.update() in your animation loop
+ this.enableDamping = false;
+ this.dampingFactor = 0.05;
+
+ // This option actually enables dollying in and out; left as "zoom" for backwards compatibility.
+ // Set to false to disable zooming
+ this.enableZoom = true;
+ this.zoomSpeed = 1.0;
+
+ // Set to false to disable rotating
+ this.enableRotate = true;
+ this.rotateSpeed = 1.0;
+
+ // Set to false to disable panning
+ this.enablePan = true;
+ this.panSpeed = 1.0;
+ this.screenSpacePanning = false; // if true, pan in screen-space
+ this.keyPanSpeed = 7.0; // pixels moved per arrow key push
+
+ // Set to true to automatically rotate around the target
+ // If auto-rotate is enabled, you must call controls.update() in your animation loop
+ this.autoRotate = false;
+ this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60
+
+ // Set to false to disable use of the keys
+ this.enableKeys = true;
+
+ // The four arrow keys
+ this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };
+
+ // Mouse buttons
+ this.mouseButtons = { LEFT: THREE.MOUSE.ROTATE, MIDDLE: THREE.MOUSE.DOLLY, RIGHT: THREE.MOUSE.PAN };
+
+ // Touch fingers
+ this.touches = { ONE: THREE.TOUCH.ROTATE, TWO: THREE.TOUCH.DOLLY_PAN };
+
+ // for reset
+ this.target0 = this.target.clone();
+ this.position0 = this.object.position.clone();
+ this.zoom0 = this.object.zoom;
+
+ //
+ // public methods
+ //
+
+ this.getPolarAngle = function () {
+
+ return spherical.phi;
+
+ };
+
+ this.getAzimuthalAngle = function () {
+
+ return spherical.theta;
+
+ };
+
+ this.saveState = function () {
+
+ scope.target0.copy( scope.target );
+ scope.position0.copy( scope.object.position );
+ scope.zoom0 = scope.object.zoom;
+
+ };
+
+ this.reset = function () {
+
+ scope.target.copy( scope.target0 );
+ scope.object.position.copy( scope.position0 );
+ scope.object.zoom = scope.zoom0;
+
+ scope.object.updateProjectionMatrix();
+ scope.dispatchEvent( changeEvent );
+
+ scope.update();
+
+ state = STATE.NONE;
+
+ };
+
+ // this method is exposed, but perhaps it would be better if we can make it private...
+ this.update = function () {
+
+ var offset = new THREE.Vector3();
+
+ // so camera.up is the orbit axis
+ var quat = new THREE.Quaternion().setFromUnitVectors( object.up, new THREE.Vector3( 0, 1, 0 ) );
+ var quatInverse = quat.clone().inverse();
+
+ var lastPosition = new THREE.Vector3();
+ var lastQuaternion = new THREE.Quaternion();
+
+ return function update() {
+
+ var position = scope.object.position;
+
+ offset.copy( position ).sub( scope.target );
+
+ // rotate offset to "y-axis-is-up" space
+ offset.applyQuaternion( quat );
+
+ // angle from z-axis around y-axis
+ spherical.setFromVector3( offset );
+
+ if ( scope.autoRotate && state === STATE.NONE ) {
+
+ rotateLeft( getAutoRotationAngle() );
+
+ }
+
+ if ( scope.enableDamping ) {
+
+ spherical.theta += sphericalDelta.theta * scope.dampingFactor;
+ spherical.phi += sphericalDelta.phi * scope.dampingFactor;
+
+ } else {
+
+ spherical.theta += sphericalDelta.theta;
+ spherical.phi += sphericalDelta.phi;
+
+ }
+
+ // restrict theta to be between desired limits
+ spherical.theta = Math.max( scope.minAzimuthAngle, Math.min( scope.maxAzimuthAngle, spherical.theta ) );
+
+ // restrict phi to be between desired limits
+ spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );
+
+ spherical.makeSafe();
+
+
+ spherical.radius *= scale;
+
+ // restrict radius to be between desired limits
+ spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );
+
+ // move target to panned location
+
+ if ( scope.enableDamping === true ) {
+
+ scope.target.addScaledVector( panOffset, scope.dampingFactor );
+
+ } else {
+
+ scope.target.add( panOffset );
+
+ }
+
+ offset.setFromSpherical( spherical );
+
+ // rotate offset back to "camera-up-vector-is-up" space
+ offset.applyQuaternion( quatInverse );
+
+ position.copy( scope.target ).add( offset );
+
+ scope.object.lookAt( scope.target );
+
+ if ( scope.enableDamping === true ) {
+
+ sphericalDelta.theta *= ( 1 - scope.dampingFactor );
+ sphericalDelta.phi *= ( 1 - scope.dampingFactor );
+
+ panOffset.multiplyScalar( 1 - scope.dampingFactor );
+
+ } else {
+
+ sphericalDelta.set( 0, 0, 0 );
+
+ panOffset.set( 0, 0, 0 );
+
+ }
+
+ scale = 1;
+
+ // update condition is:
+ // min(camera displacement, camera rotation in radians)^2 > EPS
+ // using small-angle approximation cos(x/2) = 1 - x^2 / 8
+
+ if ( zoomChanged ||
+ lastPosition.distanceToSquared( scope.object.position ) > EPS ||
+ 8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {
+
+ scope.dispatchEvent( changeEvent );
+
+ lastPosition.copy( scope.object.position );
+ lastQuaternion.copy( scope.object.quaternion );
+ zoomChanged = false;
+
+ return true;
+
+ }
+
+ return false;
+
+ };
+
+ }();
+
+ this.dispose = function () {
+
+ scope.domElement.removeEventListener( 'contextmenu', onContextMenu, false );
+ scope.domElement.removeEventListener( 'mousedown', onMouseDown, false );
+ scope.domElement.removeEventListener( 'wheel', onMouseWheel, false );
+
+ scope.domElement.removeEventListener( 'touchstart', onTouchStart, false );
+ scope.domElement.removeEventListener( 'touchend', onTouchEnd, false );
+ scope.domElement.removeEventListener( 'touchmove', onTouchMove, false );
+
+ document.removeEventListener( 'mousemove', onMouseMove, false );
+ document.removeEventListener( 'mouseup', onMouseUp, false );
+
+ window.removeEventListener( 'keydown', onKeyDown, false );
+
+ //scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?
+
+ };
+
+ //
+ // internals
+ //
+
+ var scope = this;
+
+ var changeEvent = { type: 'change' };
+ var startEvent = { type: 'start' };
+ var endEvent = { type: 'end' };
+
+ var STATE = {
+ NONE: - 1,
+ ROTATE: 0,
+ DOLLY: 1,
+ PAN: 2,
+ TOUCH_ROTATE: 3,
+ TOUCH_PAN: 4,
+ TOUCH_DOLLY_PAN: 5,
+ TOUCH_DOLLY_ROTATE: 6
+ };
+
+ var state = STATE.NONE;
+
+ var EPS = 0.000001;
+
+ // current position in spherical coordinates
+ var spherical = new THREE.Spherical();
+ var sphericalDelta = new THREE.Spherical();
+
+ var scale = 1;
+ var panOffset = new THREE.Vector3();
+ var zoomChanged = false;
+
+ var rotateStart = new THREE.Vector2();
+ var rotateEnd = new THREE.Vector2();
+ var rotateDelta = new THREE.Vector2();
+
+ var panStart = new THREE.Vector2();
+ var panEnd = new THREE.Vector2();
+ var panDelta = new THREE.Vector2();
+
+ var dollyStart = new THREE.Vector2();
+ var dollyEnd = new THREE.Vector2();
+ var dollyDelta = new THREE.Vector2();
+
+ function getAutoRotationAngle() {
+
+ return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;
+
+ }
+
+ function getZoomScale() {
+
+ return Math.pow( 0.95, scope.zoomSpeed );
+
+ }
+
+ function rotateLeft( angle ) {
+
+ sphericalDelta.theta -= angle;
+
+ }
+
+ function rotateUp( angle ) {
+
+ sphericalDelta.phi -= angle;
+
+ }
+
+ var panLeft = function () {
+
+ var v = new THREE.Vector3();
+
+ return function panLeft( distance, objectMatrix ) {
+
+ v.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix
+ v.multiplyScalar( - distance );
+
+ panOffset.add( v );
+
+ };
+
+ }();
+
+ var panUp = function () {
+
+ var v = new THREE.Vector3();
+
+ return function panUp( distance, objectMatrix ) {
+
+ if ( scope.screenSpacePanning === true ) {
+
+ v.setFromMatrixColumn( objectMatrix, 1 );
+
+ } else {
+
+ v.setFromMatrixColumn( objectMatrix, 0 );
+ v.crossVectors( scope.object.up, v );
+
+ }
+
+ v.multiplyScalar( distance );
+
+ panOffset.add( v );
+
+ };
+
+ }();
+
+ // deltaX and deltaY are in pixels; right and down are positive
+ var pan = function () {
+
+ var offset = new THREE.Vector3();
+
+ return function pan( deltaX, deltaY ) {
+
+ var element = scope.domElement;
+
+ if ( scope.object.isPerspectiveCamera ) {
+
+ // perspective
+ var position = scope.object.position;
+ offset.copy( position ).sub( scope.target );
+ var targetDistance = offset.length();
+
+ // half of the fov is center to top of screen
+ targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );
+
+ // we use only clientHeight here so aspect ratio does not distort speed
+ panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );
+ panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );
+
+ } else if ( scope.object.isOrthographicCamera ) {
+
+ // orthographic
+ panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );
+ panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );
+
+ } else {
+
+ // camera neither orthographic nor perspective
+ console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
+ scope.enablePan = false;
+
+ }
+
+ };
+
+ }();
+
+ function dollyIn( dollyScale ) {
+
+ if ( scope.object.isPerspectiveCamera ) {
+
+ scale /= dollyScale;
+
+ } else if ( scope.object.isOrthographicCamera ) {
+
+ scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );
+ scope.object.updateProjectionMatrix();
+ zoomChanged = true;
+
+ } else {
+
+ console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
+ scope.enableZoom = false;
+
+ }
+
+ }
+
+ function dollyOut( dollyScale ) {
+
+ if ( scope.object.isPerspectiveCamera ) {
+
+ scale *= dollyScale;
+
+ } else if ( scope.object.isOrthographicCamera ) {
+
+ scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );
+ scope.object.updateProjectionMatrix();
+ zoomChanged = true;
+
+ } else {
+
+ console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
+ scope.enableZoom = false;
+
+ }
+
+ }
+
+ //
+ // event callbacks - update the object state
+ //
+
+ function handleMouseDownRotate( event ) {
+
+ rotateStart.set( event.clientX, event.clientY );
+
+ }
+
+ function handleMouseDownDolly( event ) {
+
+ dollyStart.set( event.clientX, event.clientY );
+
+ }
+
+ function handleMouseDownPan( event ) {
+
+ panStart.set( event.clientX, event.clientY );
+
+ }
+
+ function handleMouseMoveRotate( event ) {
+
+ rotateEnd.set( event.clientX, event.clientY );
+
+ rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );
+
+ var element = scope.domElement;
+
+ rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height
+
+ rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );
+
+ rotateStart.copy( rotateEnd );
+
+ scope.update();
+
+ }
+
+ function handleMouseMoveDolly( event ) {
+
+ dollyEnd.set( event.clientX, event.clientY );
+
+ dollyDelta.subVectors( dollyEnd, dollyStart );
+
+ if ( dollyDelta.y > 0 ) {
+
+ dollyIn( getZoomScale() );
+
+ } else if ( dollyDelta.y < 0 ) {
+
+ dollyOut( getZoomScale() );
+
+ }
+
+ dollyStart.copy( dollyEnd );
+
+ scope.update();
+
+ }
+
+ function handleMouseMovePan( event ) {
+
+ panEnd.set( event.clientX, event.clientY );
+
+ panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );
+
+ pan( panDelta.x, panDelta.y );
+
+ panStart.copy( panEnd );
+
+ scope.update();
+
+ }
+
+ function handleMouseUp( /*event*/ ) {
+
+ // no-op
+
+ }
+
+ function handleMouseWheel( event ) {
+
+ if ( event.deltaY < 0 ) {
+
+ dollyOut( getZoomScale() );
+
+ } else if ( event.deltaY > 0 ) {
+
+ dollyIn( getZoomScale() );
+
+ }
+
+ scope.update();
+
+ }
+
+ function handleKeyDown( event ) {
+
+ var needsUpdate = false;
+
+ switch ( event.keyCode ) {
+
+ case scope.keys.UP:
+ pan( 0, scope.keyPanSpeed );
+ needsUpdate = true;
+ break;
+
+ case scope.keys.BOTTOM:
+ pan( 0, - scope.keyPanSpeed );
+ needsUpdate = true;
+ break;
+
+ case scope.keys.LEFT:
+ pan( scope.keyPanSpeed, 0 );
+ needsUpdate = true;
+ break;
+
+ case scope.keys.RIGHT:
+ pan( - scope.keyPanSpeed, 0 );
+ needsUpdate = true;
+ break;
+
+ }
+
+ if ( needsUpdate ) {
+
+ // prevent the browser from scrolling on cursor keys
+ event.preventDefault();
+
+ scope.update();
+
+ }
+
+
+ }
+
+ function handleTouchStartRotate( event ) {
+
+ if ( event.touches.length == 1 ) {
+
+ rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+
+ } else {
+
+ var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
+ var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
+
+ rotateStart.set( x, y );
+
+ }
+
+ }
+
+ function handleTouchStartPan( event ) {
+
+ if ( event.touches.length == 1 ) {
+
+ panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+
+ } else {
+
+ var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
+ var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
+
+ panStart.set( x, y );
+
+ }
+
+ }
+
+ function handleTouchStartDolly( event ) {
+
+ var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
+ var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
+
+ var distance = Math.sqrt( dx * dx + dy * dy );
+
+ dollyStart.set( 0, distance );
+
+ }
+
+ function handleTouchStartDollyPan( event ) {
+
+ if ( scope.enableZoom ) handleTouchStartDolly( event );
+
+ if ( scope.enablePan ) handleTouchStartPan( event );
+
+ }
+
+ function handleTouchStartDollyRotate( event ) {
+
+ if ( scope.enableZoom ) handleTouchStartDolly( event );
+
+ if ( scope.enableRotate ) handleTouchStartRotate( event );
+
+ }
+
+ function handleTouchMoveRotate( event ) {
+
+ if ( event.touches.length == 1 ) {
+
+ rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+
+ } else {
+
+ var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
+ var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
+
+ rotateEnd.set( x, y );
+
+ }
+
+ rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );
+
+ var element = scope.domElement;
+
+ rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height
+
+ rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );
+
+ rotateStart.copy( rotateEnd );
+
+ }
+
+ function handleTouchMovePan( event ) {
+
+ if ( event.touches.length == 1 ) {
+
+ panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+
+ } else {
+
+ var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
+ var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
+
+ panEnd.set( x, y );
+
+ }
+
+ panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );
+
+ pan( panDelta.x, panDelta.y );
+
+ panStart.copy( panEnd );
+
+ }
+
+ function handleTouchMoveDolly( event ) {
+
+ var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
+ var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
+
+ var distance = Math.sqrt( dx * dx + dy * dy );
+
+ dollyEnd.set( 0, distance );
+
+ dollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) );
+
+ dollyIn( dollyDelta.y );
+
+ dollyStart.copy( dollyEnd );
+
+ }
+
+ function handleTouchMoveDollyPan( event ) {
+
+ if ( scope.enableZoom ) handleTouchMoveDolly( event );
+
+ if ( scope.enablePan ) handleTouchMovePan( event );
+
+ }
+
+ function handleTouchMoveDollyRotate( event ) {
+
+ if ( scope.enableZoom ) handleTouchMoveDolly( event );
+
+ if ( scope.enableRotate ) handleTouchMoveRotate( event );
+
+ }
+
+ function handleTouchEnd( /*event*/ ) {
+
+ // no-op
+
+ }
+
+ //
+ // event handlers - FSM: listen for events and reset state
+ //
+
+ function onMouseDown( event ) {
+
+ if ( scope.enabled === false ) return;
+
+ // Prevent the browser from scrolling.
+
+ event.preventDefault();
+
+ // Manually set the focus since calling preventDefault above
+ // prevents the browser from setting it automatically.
+
+ scope.domElement.focus ? scope.domElement.focus() : window.focus();
+
+ switch ( event.button ) {
+
+ case 0:
+
+ switch ( scope.mouseButtons.LEFT ) {
+
+ case THREE.MOUSE.ROTATE:
+
+ if ( event.ctrlKey || event.metaKey || event.shiftKey ) {
+
+ if ( scope.enablePan === false ) return;
+
+ handleMouseDownPan( event );
+
+ state = STATE.PAN;
+
+ } else {
+
+ if ( scope.enableRotate === false ) return;
+
+ handleMouseDownRotate( event );
+
+ state = STATE.ROTATE;
+
+ }
+
+ break;
+
+ case THREE.MOUSE.PAN:
+
+ if ( event.ctrlKey || event.metaKey || event.shiftKey ) {
+
+ if ( scope.enableRotate === false ) return;
+
+ handleMouseDownRotate( event );
+
+ state = STATE.ROTATE;
+
+ } else {
+
+ if ( scope.enablePan === false ) return;
+
+ handleMouseDownPan( event );
+
+ state = STATE.PAN;
+
+ }
+
+ break;
+
+ default:
+
+ state = STATE.NONE;
+
+ }
+
+ break;
+
+
+ case 1:
+
+ switch ( scope.mouseButtons.MIDDLE ) {
+
+ case THREE.MOUSE.DOLLY:
+
+ if ( scope.enableZoom === false ) return;
+
+ handleMouseDownDolly( event );
+
+ state = STATE.DOLLY;
+
+ break;
+
+
+ default:
+
+ state = STATE.NONE;
+
+ }
+
+ break;
+
+ case 2:
+
+ switch ( scope.mouseButtons.RIGHT ) {
+
+ case THREE.MOUSE.ROTATE:
+
+ if ( scope.enableRotate === false ) return;
+
+ handleMouseDownRotate( event );
+
+ state = STATE.ROTATE;
+
+ break;
+
+ case THREE.MOUSE.PAN:
+
+ if ( scope.enablePan === false ) return;
+
+ handleMouseDownPan( event );
+
+ state = STATE.PAN;
+
+ break;
+
+ default:
+
+ state = STATE.NONE;
+
+ }
+
+ break;
+
+ }
+
+ if ( state !== STATE.NONE ) {
+
+ document.addEventListener( 'mousemove', onMouseMove, false );
+ document.addEventListener( 'mouseup', onMouseUp, false );
+
+ scope.dispatchEvent( startEvent );
+
+ }
+
+ }
+
+ function onMouseMove( event ) {
+
+ if ( scope.enabled === false ) return;
+
+ event.preventDefault();
+
+ switch ( state ) {
+
+ case STATE.ROTATE:
+
+ if ( scope.enableRotate === false ) return;
+
+ handleMouseMoveRotate( event );
+
+ break;
+
+ case STATE.DOLLY:
+
+ if ( scope.enableZoom === false ) return;
+
+ handleMouseMoveDolly( event );
+
+ break;
+
+ case STATE.PAN:
+
+ if ( scope.enablePan === false ) return;
+
+ handleMouseMovePan( event );
+
+ break;
+
+ }
+
+ }
+
+ function onMouseUp( event ) {
+
+ if ( scope.enabled === false ) return;
+
+ handleMouseUp( event );
+
+ document.removeEventListener( 'mousemove', onMouseMove, false );
+ document.removeEventListener( 'mouseup', onMouseUp, false );
+
+ scope.dispatchEvent( endEvent );
+
+ state = STATE.NONE;
+
+ }
+
+ function onMouseWheel( event ) {
+
+ if ( scope.enabled === false || scope.enableZoom === false || ( state !== STATE.NONE && state !== STATE.ROTATE ) ) return;
+
+ event.preventDefault();
+ event.stopPropagation();
+
+ scope.dispatchEvent( startEvent );
+
+ handleMouseWheel( event );
+
+ scope.dispatchEvent( endEvent );
+
+ }
+
+ function onKeyDown( event ) {
+
+ if ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;
+
+ handleKeyDown( event );
+
+ }
+
+ function onTouchStart( event ) {
+
+ if ( scope.enabled === false ) return;
+
+ event.preventDefault();
+
+ switch ( event.touches.length ) {
+
+ case 1:
+
+ switch ( scope.touches.ONE ) {
+
+ case THREE.TOUCH.ROTATE:
+
+ if ( scope.enableRotate === false ) return;
+
+ handleTouchStartRotate( event );
+
+ state = STATE.TOUCH_ROTATE;
+
+ break;
+
+ case THREE.TOUCH.PAN:
+
+ if ( scope.enablePan === false ) return;
+
+ handleTouchStartPan( event );
+
+ state = STATE.TOUCH_PAN;
+
+ break;
+
+ default:
+
+ state = STATE.NONE;
+
+ }
+
+ break;
+
+ case 2:
+
+ switch ( scope.touches.TWO ) {
+
+ case THREE.TOUCH.DOLLY_PAN:
+
+ if ( scope.enableZoom === false && scope.enablePan === false ) return;
+
+ handleTouchStartDollyPan( event );
+
+ state = STATE.TOUCH_DOLLY_PAN;
+
+ break;
+
+ case THREE.TOUCH.DOLLY_ROTATE:
+
+ if ( scope.enableZoom === false && scope.enableRotate === false ) return;
+
+ handleTouchStartDollyRotate( event );
+
+ state = STATE.TOUCH_DOLLY_ROTATE;
+
+ break;
+
+ default:
+
+ state = STATE.NONE;
+
+ }
+
+ break;
+
+ default:
+
+ state = STATE.NONE;
+
+ }
+
+ if ( state !== STATE.NONE ) {
+
+ scope.dispatchEvent( startEvent );
+
+ }
+
+ }
+
+ function onTouchMove( event ) {
+
+ if ( scope.enabled === false ) return;
+
+ event.preventDefault();
+ event.stopPropagation();
+
+ switch ( state ) {
+
+ case STATE.TOUCH_ROTATE:
+
+ if ( scope.enableRotate === false ) return;
+
+ handleTouchMoveRotate( event );
+
+ scope.update();
+
+ break;
+
+ case STATE.TOUCH_PAN:
+
+ if ( scope.enablePan === false ) return;
+
+ handleTouchMovePan( event );
+
+ scope.update();
+
+ break;
+
+ case STATE.TOUCH_DOLLY_PAN:
+
+ if ( scope.enableZoom === false && scope.enablePan === false ) return;
+
+ handleTouchMoveDollyPan( event );
+
+ scope.update();
+
+ break;
+
+ case STATE.TOUCH_DOLLY_ROTATE:
+
+ if ( scope.enableZoom === false && scope.enableRotate === false ) return;
+
+ handleTouchMoveDollyRotate( event );
+
+ scope.update();
+
+ break;
+
+ default:
+
+ state = STATE.NONE;
+
+ }
+
+ }
+
+ function onTouchEnd( event ) {
+
+ if ( scope.enabled === false ) return;
+
+ handleTouchEnd( event );
+
+ scope.dispatchEvent( endEvent );
+
+ state = STATE.NONE;
+
+ }
+
+ function onContextMenu( event ) {
+
+ if ( scope.enabled === false ) return;
+
+ event.preventDefault();
+
+ }
+
+ //
+
+ scope.domElement.addEventListener( 'contextmenu', onContextMenu, false );
+
+ scope.domElement.addEventListener( 'mousedown', onMouseDown, false );
+ scope.domElement.addEventListener( 'wheel', onMouseWheel, false );
+
+ scope.domElement.addEventListener( 'touchstart', onTouchStart, false );
+ scope.domElement.addEventListener( 'touchend', onTouchEnd, false );
+ scope.domElement.addEventListener( 'touchmove', onTouchMove, false );
+
+ window.addEventListener( 'keydown', onKeyDown, false );
+
+ // force an update at start
+
+ this.update();
+
+};
+
+THREE.OrbitControls.prototype = Object.create( THREE.EventDispatcher.prototype );
+THREE.OrbitControls.prototype.constructor = THREE.OrbitControls;
+
+
+// This set of controls performs orbiting, dollying (zooming), and panning.
+// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
+// This is very similar to OrbitControls, another set of touch behavior
+//
+// Orbit - right mouse, or left mouse + ctrl/meta/shiftKey / touch: two-finger rotate
+// Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
+// Pan - left mouse, or arrow keys / touch: one-finger move
+
+THREE.MapControls = function ( object, domElement ) {
+
+ THREE.OrbitControls.call( this, object, domElement );
+
+ this.mouseButtons.LEFT = THREE.MOUSE.PAN;
+ this.mouseButtons.RIGHT = THREE.MOUSE.ROTATE;
+
+ this.touches.ONE = THREE.TOUCH.PAN;
+ this.touches.TWO = THREE.TOUCH.DOLLY_ROTATE;
+
+};
+
+THREE.MapControls.prototype = Object.create( THREE.EventDispatcher.prototype );
+THREE.MapControls.prototype.constructor = THREE.MapControls;
diff --git a/libs/three.js b/libs/three.js
new file mode 100644
index 00000000..0df3d033
--- /dev/null
+++ b/libs/three.js
@@ -0,0 +1,49623 @@
+(function (global, factory) {
+ typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+ typeof define === 'function' && define.amd ? define(['exports'], factory) :
+ (global = global || self, factory(global.THREE = {}));
+}(this, function (exports) { 'use strict';
+
+ // Polyfills
+
+ if ( Number.EPSILON === undefined ) {
+
+ Number.EPSILON = Math.pow( 2, - 52 );
+
+ }
+
+ if ( Number.isInteger === undefined ) {
+
+ // Missing in IE
+ // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isInteger
+
+ Number.isInteger = function ( value ) {
+
+ return typeof value === 'number' && isFinite( value ) && Math.floor( value ) === value;
+
+ };
+
+ }
+
+ //
+
+ if ( Math.sign === undefined ) {
+
+ // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/sign
+
+ Math.sign = function ( x ) {
+
+ return ( x < 0 ) ? - 1 : ( x > 0 ) ? 1 : + x;
+
+ };
+
+ }
+
+ if ( 'name' in Function.prototype === false ) {
+
+ // Missing in IE
+ // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name
+
+ Object.defineProperty( Function.prototype, 'name', {
+
+ get: function () {
+
+ return this.toString().match( /^\s*function\s*([^\(\s]*)/ )[ 1 ];
+
+ }
+
+ } );
+
+ }
+
+ if ( Object.assign === undefined ) {
+
+ // Missing in IE
+ // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
+
+ Object.assign = function ( target ) {
+
+ if ( target === undefined || target === null ) {
+
+ throw new TypeError( 'Cannot convert undefined or null to object' );
+
+ }
+
+ var output = Object( target );
+
+ for ( var index = 1; index < arguments.length; index ++ ) {
+
+ var source = arguments[ index ];
+
+ if ( source !== undefined && source !== null ) {
+
+ for ( var nextKey in source ) {
+
+ if ( Object.prototype.hasOwnProperty.call( source, nextKey ) ) {
+
+ output[ nextKey ] = source[ nextKey ];
+
+ }
+
+ }
+
+ }
+
+ }
+
+ return output;
+
+ };
+
+ }
+
+ var REVISION = '109';
+ var MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };
+ var TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };
+ var CullFaceNone = 0;
+ var CullFaceBack = 1;
+ var CullFaceFront = 2;
+ var CullFaceFrontBack = 3;
+ var FrontFaceDirectionCW = 0;
+ var FrontFaceDirectionCCW = 1;
+ var BasicShadowMap = 0;
+ var PCFShadowMap = 1;
+ var PCFSoftShadowMap = 2;
+ var VSMShadowMap = 3;
+ var FrontSide = 0;
+ var BackSide = 1;
+ var DoubleSide = 2;
+ var FlatShading = 1;
+ var SmoothShading = 2;
+ var NoColors = 0;
+ var FaceColors = 1;
+ var VertexColors = 2;
+ var NoBlending = 0;
+ var NormalBlending = 1;
+ var AdditiveBlending = 2;
+ var SubtractiveBlending = 3;
+ var MultiplyBlending = 4;
+ var CustomBlending = 5;
+ var AddEquation = 100;
+ var SubtractEquation = 101;
+ var ReverseSubtractEquation = 102;
+ var MinEquation = 103;
+ var MaxEquation = 104;
+ var ZeroFactor = 200;
+ var OneFactor = 201;
+ var SrcColorFactor = 202;
+ var OneMinusSrcColorFactor = 203;
+ var SrcAlphaFactor = 204;
+ var OneMinusSrcAlphaFactor = 205;
+ var DstAlphaFactor = 206;
+ var OneMinusDstAlphaFactor = 207;
+ var DstColorFactor = 208;
+ var OneMinusDstColorFactor = 209;
+ var SrcAlphaSaturateFactor = 210;
+ var NeverDepth = 0;
+ var AlwaysDepth = 1;
+ var LessDepth = 2;
+ var LessEqualDepth = 3;
+ var EqualDepth = 4;
+ var GreaterEqualDepth = 5;
+ var GreaterDepth = 6;
+ var NotEqualDepth = 7;
+ var MultiplyOperation = 0;
+ var MixOperation = 1;
+ var AddOperation = 2;
+ var NoToneMapping = 0;
+ var LinearToneMapping = 1;
+ var ReinhardToneMapping = 2;
+ var Uncharted2ToneMapping = 3;
+ var CineonToneMapping = 4;
+ var ACESFilmicToneMapping = 5;
+
+ var UVMapping = 300;
+ var CubeReflectionMapping = 301;
+ var CubeRefractionMapping = 302;
+ var EquirectangularReflectionMapping = 303;
+ var EquirectangularRefractionMapping = 304;
+ var SphericalReflectionMapping = 305;
+ var CubeUVReflectionMapping = 306;
+ var CubeUVRefractionMapping = 307;
+ var RepeatWrapping = 1000;
+ var ClampToEdgeWrapping = 1001;
+ var MirroredRepeatWrapping = 1002;
+ var NearestFilter = 1003;
+ var NearestMipmapNearestFilter = 1004;
+ var NearestMipMapNearestFilter = 1004;
+ var NearestMipmapLinearFilter = 1005;
+ var NearestMipMapLinearFilter = 1005;
+ var LinearFilter = 1006;
+ var LinearMipmapNearestFilter = 1007;
+ var LinearMipMapNearestFilter = 1007;
+ var LinearMipmapLinearFilter = 1008;
+ var LinearMipMapLinearFilter = 1008;
+ var UnsignedByteType = 1009;
+ var ByteType = 1010;
+ var ShortType = 1011;
+ var UnsignedShortType = 1012;
+ var IntType = 1013;
+ var UnsignedIntType = 1014;
+ var FloatType = 1015;
+ var HalfFloatType = 1016;
+ var UnsignedShort4444Type = 1017;
+ var UnsignedShort5551Type = 1018;
+ var UnsignedShort565Type = 1019;
+ var UnsignedInt248Type = 1020;
+ var AlphaFormat = 1021;
+ var RGBFormat = 1022;
+ var RGBAFormat = 1023;
+ var LuminanceFormat = 1024;
+ var LuminanceAlphaFormat = 1025;
+ var RGBEFormat = RGBAFormat;
+ var DepthFormat = 1026;
+ var DepthStencilFormat = 1027;
+ var RedFormat = 1028;
+ var RGB_S3TC_DXT1_Format = 33776;
+ var RGBA_S3TC_DXT1_Format = 33777;
+ var RGBA_S3TC_DXT3_Format = 33778;
+ var RGBA_S3TC_DXT5_Format = 33779;
+ var RGB_PVRTC_4BPPV1_Format = 35840;
+ var RGB_PVRTC_2BPPV1_Format = 35841;
+ var RGBA_PVRTC_4BPPV1_Format = 35842;
+ var RGBA_PVRTC_2BPPV1_Format = 35843;
+ var RGB_ETC1_Format = 36196;
+ var RGBA_ASTC_4x4_Format = 37808;
+ var RGBA_ASTC_5x4_Format = 37809;
+ var RGBA_ASTC_5x5_Format = 37810;
+ var RGBA_ASTC_6x5_Format = 37811;
+ var RGBA_ASTC_6x6_Format = 37812;
+ var RGBA_ASTC_8x5_Format = 37813;
+ var RGBA_ASTC_8x6_Format = 37814;
+ var RGBA_ASTC_8x8_Format = 37815;
+ var RGBA_ASTC_10x5_Format = 37816;
+ var RGBA_ASTC_10x6_Format = 37817;
+ var RGBA_ASTC_10x8_Format = 37818;
+ var RGBA_ASTC_10x10_Format = 37819;
+ var RGBA_ASTC_12x10_Format = 37820;
+ var RGBA_ASTC_12x12_Format = 37821;
+ var LoopOnce = 2200;
+ var LoopRepeat = 2201;
+ var LoopPingPong = 2202;
+ var InterpolateDiscrete = 2300;
+ var InterpolateLinear = 2301;
+ var InterpolateSmooth = 2302;
+ var ZeroCurvatureEnding = 2400;
+ var ZeroSlopeEnding = 2401;
+ var WrapAroundEnding = 2402;
+ var TrianglesDrawMode = 0;
+ var TriangleStripDrawMode = 1;
+ var TriangleFanDrawMode = 2;
+ var LinearEncoding = 3000;
+ var sRGBEncoding = 3001;
+ var GammaEncoding = 3007;
+ var RGBEEncoding = 3002;
+ var LogLuvEncoding = 3003;
+ var RGBM7Encoding = 3004;
+ var RGBM16Encoding = 3005;
+ var RGBDEncoding = 3006;
+ var BasicDepthPacking = 3200;
+ var RGBADepthPacking = 3201;
+ var TangentSpaceNormalMap = 0;
+ var ObjectSpaceNormalMap = 1;
+
+ var ZeroStencilOp = 0;
+ var KeepStencilOp = 7680;
+ var ReplaceStencilOp = 7681;
+ var IncrementStencilOp = 7682;
+ var DecrementStencilOp = 7683;
+ var IncrementWrapStencilOp = 34055;
+ var DecrementWrapStencilOp = 34056;
+ var InvertStencilOp = 5386;
+
+ var NeverStencilFunc = 512;
+ var LessStencilFunc = 513;
+ var EqualStencilFunc = 514;
+ var LessEqualStencilFunc = 515;
+ var GreaterStencilFunc = 516;
+ var NotEqualStencilFunc = 517;
+ var GreaterEqualStencilFunc = 518;
+ var AlwaysStencilFunc = 519;
+
+ /**
+ * https://github.com/mrdoob/eventdispatcher.js/
+ */
+
+ function EventDispatcher() {}
+
+ Object.assign( EventDispatcher.prototype, {
+
+ addEventListener: function ( type, listener ) {
+
+ if ( this._listeners === undefined ) { this._listeners = {}; }
+
+ var listeners = this._listeners;
+
+ if ( listeners[ type ] === undefined ) {
+
+ listeners[ type ] = [];
+
+ }
+
+ if ( listeners[ type ].indexOf( listener ) === - 1 ) {
+
+ listeners[ type ].push( listener );
+
+ }
+
+ },
+
+ hasEventListener: function ( type, listener ) {
+
+ if ( this._listeners === undefined ) { return false; }
+
+ var listeners = this._listeners;
+
+ return listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;
+
+ },
+
+ removeEventListener: function ( type, listener ) {
+
+ if ( this._listeners === undefined ) { return; }
+
+ var listeners = this._listeners;
+ var listenerArray = listeners[ type ];
+
+ if ( listenerArray !== undefined ) {
+
+ var index = listenerArray.indexOf( listener );
+
+ if ( index !== - 1 ) {
+
+ listenerArray.splice( index, 1 );
+
+ }
+
+ }
+
+ },
+
+ dispatchEvent: function ( event ) {
+
+ if ( this._listeners === undefined ) { return; }
+
+ var listeners = this._listeners;
+ var listenerArray = listeners[ event.type ];
+
+ if ( listenerArray !== undefined ) {
+
+ event.target = this;
+
+ var array = listenerArray.slice( 0 );
+
+ for ( var i = 0, l = array.length; i < l; i ++ ) {
+
+ array[ i ].call( this, event );
+
+ }
+
+ }
+
+ }
+
+ } );
+
+ /**
+ * @author alteredq / http://alteredqualia.com/
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+ var _lut = [];
+
+ for ( var i = 0; i < 256; i ++ ) {
+
+ _lut[ i ] = ( i < 16 ? '0' : '' ) + ( i ).toString( 16 );
+
+ }
+
+ var _Math = {
+
+ DEG2RAD: Math.PI / 180,
+ RAD2DEG: 180 / Math.PI,
+
+ generateUUID: function () {
+
+ // http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
+
+ var d0 = Math.random() * 0xffffffff | 0;
+ var d1 = Math.random() * 0xffffffff | 0;
+ var d2 = Math.random() * 0xffffffff | 0;
+ var d3 = Math.random() * 0xffffffff | 0;
+ var uuid = _lut[ d0 & 0xff ] + _lut[ d0 >> 8 & 0xff ] + _lut[ d0 >> 16 & 0xff ] + _lut[ d0 >> 24 & 0xff ] + '-' +
+ _lut[ d1 & 0xff ] + _lut[ d1 >> 8 & 0xff ] + '-' + _lut[ d1 >> 16 & 0x0f | 0x40 ] + _lut[ d1 >> 24 & 0xff ] + '-' +
+ _lut[ d2 & 0x3f | 0x80 ] + _lut[ d2 >> 8 & 0xff ] + '-' + _lut[ d2 >> 16 & 0xff ] + _lut[ d2 >> 24 & 0xff ] +
+ _lut[ d3 & 0xff ] + _lut[ d3 >> 8 & 0xff ] + _lut[ d3 >> 16 & 0xff ] + _lut[ d3 >> 24 & 0xff ];
+
+ // .toUpperCase() here flattens concatenated strings to save heap memory space.
+ return uuid.toUpperCase();
+
+ },
+
+ clamp: function ( value, min, max ) {
+
+ return Math.max( min, Math.min( max, value ) );
+
+ },
+
+ // compute euclidian modulo of m % n
+ // https://en.wikipedia.org/wiki/Modulo_operation
+
+ euclideanModulo: function ( n, m ) {
+
+ return ( ( n % m ) + m ) % m;
+
+ },
+
+ // Linear mapping from range
to range
+
+ mapLinear: function ( x, a1, a2, b1, b2 ) {
+
+ return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );
+
+ },
+
+ // https://en.wikipedia.org/wiki/Linear_interpolation
+
+ lerp: function ( x, y, t ) {
+
+ return ( 1 - t ) * x + t * y;
+
+ },
+
+ // http://en.wikipedia.org/wiki/Smoothstep
+
+ smoothstep: function ( x, min, max ) {
+
+ if ( x <= min ) { return 0; }
+ if ( x >= max ) { return 1; }
+
+ x = ( x - min ) / ( max - min );
+
+ return x * x * ( 3 - 2 * x );
+
+ },
+
+ smootherstep: function ( x, min, max ) {
+
+ if ( x <= min ) { return 0; }
+ if ( x >= max ) { return 1; }
+
+ x = ( x - min ) / ( max - min );
+
+ return x * x * x * ( x * ( x * 6 - 15 ) + 10 );
+
+ },
+
+ // Random integer from interval
+
+ randInt: function ( low, high ) {
+
+ return low + Math.floor( Math.random() * ( high - low + 1 ) );
+
+ },
+
+ // Random float from interval
+
+ randFloat: function ( low, high ) {
+
+ return low + Math.random() * ( high - low );
+
+ },
+
+ // Random float from <-range/2, range/2> interval
+
+ randFloatSpread: function ( range ) {
+
+ return range * ( 0.5 - Math.random() );
+
+ },
+
+ degToRad: function ( degrees ) {
+
+ return degrees * _Math.DEG2RAD;
+
+ },
+
+ radToDeg: function ( radians ) {
+
+ return radians * _Math.RAD2DEG;
+
+ },
+
+ isPowerOfTwo: function ( value ) {
+
+ return ( value & ( value - 1 ) ) === 0 && value !== 0;
+
+ },
+
+ ceilPowerOfTwo: function ( value ) {
+
+ return Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );
+
+ },
+
+ floorPowerOfTwo: function ( value ) {
+
+ return Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );
+
+ }
+
+ };
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author philogb / http://blog.thejit.org/
+ * @author egraether / http://egraether.com/
+ * @author zz85 / http://www.lab4games.net/zz85/blog
+ */
+
+ function Vector2( x, y ) {
+
+ this.x = x || 0;
+ this.y = y || 0;
+
+ }
+
+ Object.defineProperties( Vector2.prototype, {
+
+ "width": {
+
+ get: function () {
+
+ return this.x;
+
+ },
+
+ set: function ( value ) {
+
+ this.x = value;
+
+ }
+
+ },
+
+ "height": {
+
+ get: function () {
+
+ return this.y;
+
+ },
+
+ set: function ( value ) {
+
+ this.y = value;
+
+ }
+
+ }
+
+ } );
+
+ Object.assign( Vector2.prototype, {
+
+ isVector2: true,
+
+ set: function ( x, y ) {
+
+ this.x = x;
+ this.y = y;
+
+ return this;
+
+ },
+
+ setScalar: function ( scalar ) {
+
+ this.x = scalar;
+ this.y = scalar;
+
+ return this;
+
+ },
+
+ setX: function ( x ) {
+
+ this.x = x;
+
+ return this;
+
+ },
+
+ setY: function ( y ) {
+
+ this.y = y;
+
+ return this;
+
+ },
+
+ setComponent: function ( index, value ) {
+
+ switch ( index ) {
+
+ case 0: this.x = value; break;
+ case 1: this.y = value; break;
+ default: throw new Error( 'index is out of range: ' + index );
+
+ }
+
+ return this;
+
+ },
+
+ getComponent: function ( index ) {
+
+ switch ( index ) {
+
+ case 0: return this.x;
+ case 1: return this.y;
+ default: throw new Error( 'index is out of range: ' + index );
+
+ }
+
+ },
+
+ clone: function () {
+
+ return new this.constructor( this.x, this.y );
+
+ },
+
+ copy: function ( v ) {
+
+ this.x = v.x;
+ this.y = v.y;
+
+ return this;
+
+ },
+
+ add: function ( v, w ) {
+
+ if ( w !== undefined ) {
+
+ console.warn( 'THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
+ return this.addVectors( v, w );
+
+ }
+
+ this.x += v.x;
+ this.y += v.y;
+
+ return this;
+
+ },
+
+ addScalar: function ( s ) {
+
+ this.x += s;
+ this.y += s;
+
+ return this;
+
+ },
+
+ addVectors: function ( a, b ) {
+
+ this.x = a.x + b.x;
+ this.y = a.y + b.y;
+
+ return this;
+
+ },
+
+ addScaledVector: function ( v, s ) {
+
+ this.x += v.x * s;
+ this.y += v.y * s;
+
+ return this;
+
+ },
+
+ sub: function ( v, w ) {
+
+ if ( w !== undefined ) {
+
+ console.warn( 'THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
+ return this.subVectors( v, w );
+
+ }
+
+ this.x -= v.x;
+ this.y -= v.y;
+
+ return this;
+
+ },
+
+ subScalar: function ( s ) {
+
+ this.x -= s;
+ this.y -= s;
+
+ return this;
+
+ },
+
+ subVectors: function ( a, b ) {
+
+ this.x = a.x - b.x;
+ this.y = a.y - b.y;
+
+ return this;
+
+ },
+
+ multiply: function ( v ) {
+
+ this.x *= v.x;
+ this.y *= v.y;
+
+ return this;
+
+ },
+
+ multiplyScalar: function ( scalar ) {
+
+ this.x *= scalar;
+ this.y *= scalar;
+
+ return this;
+
+ },
+
+ divide: function ( v ) {
+
+ this.x /= v.x;
+ this.y /= v.y;
+
+ return this;
+
+ },
+
+ divideScalar: function ( scalar ) {
+
+ return this.multiplyScalar( 1 / scalar );
+
+ },
+
+ applyMatrix3: function ( m ) {
+
+ var x = this.x, y = this.y;
+ var e = m.elements;
+
+ this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];
+ this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];
+
+ return this;
+
+ },
+
+ min: function ( v ) {
+
+ this.x = Math.min( this.x, v.x );
+ this.y = Math.min( this.y, v.y );
+
+ return this;
+
+ },
+
+ max: function ( v ) {
+
+ this.x = Math.max( this.x, v.x );
+ this.y = Math.max( this.y, v.y );
+
+ return this;
+
+ },
+
+ clamp: function ( min, max ) {
+
+ // assumes min < max, componentwise
+
+ this.x = Math.max( min.x, Math.min( max.x, this.x ) );
+ this.y = Math.max( min.y, Math.min( max.y, this.y ) );
+
+ return this;
+
+ },
+
+ clampScalar: function ( minVal, maxVal ) {
+
+ this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
+ this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
+
+ return this;
+
+ },
+
+ clampLength: function ( min, max ) {
+
+ var length = this.length();
+
+ return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
+
+ },
+
+ floor: function () {
+
+ this.x = Math.floor( this.x );
+ this.y = Math.floor( this.y );
+
+ return this;
+
+ },
+
+ ceil: function () {
+
+ this.x = Math.ceil( this.x );
+ this.y = Math.ceil( this.y );
+
+ return this;
+
+ },
+
+ round: function () {
+
+ this.x = Math.round( this.x );
+ this.y = Math.round( this.y );
+
+ return this;
+
+ },
+
+ roundToZero: function () {
+
+ this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
+ this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
+
+ return this;
+
+ },
+
+ negate: function () {
+
+ this.x = - this.x;
+ this.y = - this.y;
+
+ return this;
+
+ },
+
+ dot: function ( v ) {
+
+ return this.x * v.x + this.y * v.y;
+
+ },
+
+ cross: function ( v ) {
+
+ return this.x * v.y - this.y * v.x;
+
+ },
+
+ lengthSq: function () {
+
+ return this.x * this.x + this.y * this.y;
+
+ },
+
+ length: function () {
+
+ return Math.sqrt( this.x * this.x + this.y * this.y );
+
+ },
+
+ manhattanLength: function () {
+
+ return Math.abs( this.x ) + Math.abs( this.y );
+
+ },
+
+ normalize: function () {
+
+ return this.divideScalar( this.length() || 1 );
+
+ },
+
+ angle: function () {
+
+ // computes the angle in radians with respect to the positive x-axis
+
+ var angle = Math.atan2( this.y, this.x );
+
+ if ( angle < 0 ) { angle += 2 * Math.PI; }
+
+ return angle;
+
+ },
+
+ distanceTo: function ( v ) {
+
+ return Math.sqrt( this.distanceToSquared( v ) );
+
+ },
+
+ distanceToSquared: function ( v ) {
+
+ var dx = this.x - v.x, dy = this.y - v.y;
+ return dx * dx + dy * dy;
+
+ },
+
+ manhattanDistanceTo: function ( v ) {
+
+ return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );
+
+ },
+
+ setLength: function ( length ) {
+
+ return this.normalize().multiplyScalar( length );
+
+ },
+
+ lerp: function ( v, alpha ) {
+
+ this.x += ( v.x - this.x ) * alpha;
+ this.y += ( v.y - this.y ) * alpha;
+
+ return this;
+
+ },
+
+ lerpVectors: function ( v1, v2, alpha ) {
+
+ return this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 );
+
+ },
+
+ equals: function ( v ) {
+
+ return ( ( v.x === this.x ) && ( v.y === this.y ) );
+
+ },
+
+ fromArray: function ( array, offset ) {
+
+ if ( offset === undefined ) { offset = 0; }
+
+ this.x = array[ offset ];
+ this.y = array[ offset + 1 ];
+
+ return this;
+
+ },
+
+ toArray: function ( array, offset ) {
+
+ if ( array === undefined ) { array = []; }
+ if ( offset === undefined ) { offset = 0; }
+
+ array[ offset ] = this.x;
+ array[ offset + 1 ] = this.y;
+
+ return array;
+
+ },
+
+ fromBufferAttribute: function ( attribute, index, offset ) {
+
+ if ( offset !== undefined ) {
+
+ console.warn( 'THREE.Vector2: offset has been removed from .fromBufferAttribute().' );
+
+ }
+
+ this.x = attribute.getX( index );
+ this.y = attribute.getY( index );
+
+ return this;
+
+ },
+
+ rotateAround: function ( center, angle ) {
+
+ var c = Math.cos( angle ), s = Math.sin( angle );
+
+ var x = this.x - center.x;
+ var y = this.y - center.y;
+
+ this.x = x * c - y * s + center.x;
+ this.y = x * s + y * c + center.y;
+
+ return this;
+
+ }
+
+ } );
+
+ /**
+ * @author mikael emtinger / http://gomo.se/
+ * @author alteredq / http://alteredqualia.com/
+ * @author WestLangley / http://github.com/WestLangley
+ * @author bhouston / http://clara.io
+ */
+
+ function Quaternion( x, y, z, w ) {
+
+ this._x = x || 0;
+ this._y = y || 0;
+ this._z = z || 0;
+ this._w = ( w !== undefined ) ? w : 1;
+
+ }
+
+ Object.assign( Quaternion, {
+
+ slerp: function ( qa, qb, qm, t ) {
+
+ return qm.copy( qa ).slerp( qb, t );
+
+ },
+
+ slerpFlat: function ( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {
+
+ // fuzz-free, array-based Quaternion SLERP operation
+
+ var x0 = src0[ srcOffset0 + 0 ],
+ y0 = src0[ srcOffset0 + 1 ],
+ z0 = src0[ srcOffset0 + 2 ],
+ w0 = src0[ srcOffset0 + 3 ],
+
+ x1 = src1[ srcOffset1 + 0 ],
+ y1 = src1[ srcOffset1 + 1 ],
+ z1 = src1[ srcOffset1 + 2 ],
+ w1 = src1[ srcOffset1 + 3 ];
+
+ if ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {
+
+ var s = 1 - t,
+
+ cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
+
+ dir = ( cos >= 0 ? 1 : - 1 ),
+ sqrSin = 1 - cos * cos;
+
+ // Skip the Slerp for tiny steps to avoid numeric problems:
+ if ( sqrSin > Number.EPSILON ) {
+
+ var sin = Math.sqrt( sqrSin ),
+ len = Math.atan2( sin, cos * dir );
+
+ s = Math.sin( s * len ) / sin;
+ t = Math.sin( t * len ) / sin;
+
+ }
+
+ var tDir = t * dir;
+
+ x0 = x0 * s + x1 * tDir;
+ y0 = y0 * s + y1 * tDir;
+ z0 = z0 * s + z1 * tDir;
+ w0 = w0 * s + w1 * tDir;
+
+ // Normalize in case we just did a lerp:
+ if ( s === 1 - t ) {
+
+ var f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );
+
+ x0 *= f;
+ y0 *= f;
+ z0 *= f;
+ w0 *= f;
+
+ }
+
+ }
+
+ dst[ dstOffset ] = x0;
+ dst[ dstOffset + 1 ] = y0;
+ dst[ dstOffset + 2 ] = z0;
+ dst[ dstOffset + 3 ] = w0;
+
+ }
+
+ } );
+
+ Object.defineProperties( Quaternion.prototype, {
+
+ x: {
+
+ get: function () {
+
+ return this._x;
+
+ },
+
+ set: function ( value ) {
+
+ this._x = value;
+ this._onChangeCallback();
+
+ }
+
+ },
+
+ y: {
+
+ get: function () {
+
+ return this._y;
+
+ },
+
+ set: function ( value ) {
+
+ this._y = value;
+ this._onChangeCallback();
+
+ }
+
+ },
+
+ z: {
+
+ get: function () {
+
+ return this._z;
+
+ },
+
+ set: function ( value ) {
+
+ this._z = value;
+ this._onChangeCallback();
+
+ }
+
+ },
+
+ w: {
+
+ get: function () {
+
+ return this._w;
+
+ },
+
+ set: function ( value ) {
+
+ this._w = value;
+ this._onChangeCallback();
+
+ }
+
+ }
+
+ } );
+
+ Object.assign( Quaternion.prototype, {
+
+ isQuaternion: true,
+
+ set: function ( x, y, z, w ) {
+
+ this._x = x;
+ this._y = y;
+ this._z = z;
+ this._w = w;
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor( this._x, this._y, this._z, this._w );
+
+ },
+
+ copy: function ( quaternion ) {
+
+ this._x = quaternion.x;
+ this._y = quaternion.y;
+ this._z = quaternion.z;
+ this._w = quaternion.w;
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ setFromEuler: function ( euler, update ) {
+
+ if ( ! ( euler && euler.isEuler ) ) {
+
+ throw new Error( 'THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.' );
+
+ }
+
+ var x = euler._x, y = euler._y, z = euler._z, order = euler.order;
+
+ // http://www.mathworks.com/matlabcentral/fileexchange/
+ // 20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/
+ // content/SpinCalc.m
+
+ var cos = Math.cos;
+ var sin = Math.sin;
+
+ var c1 = cos( x / 2 );
+ var c2 = cos( y / 2 );
+ var c3 = cos( z / 2 );
+
+ var s1 = sin( x / 2 );
+ var s2 = sin( y / 2 );
+ var s3 = sin( z / 2 );
+
+ if ( order === 'XYZ' ) {
+
+ this._x = s1 * c2 * c3 + c1 * s2 * s3;
+ this._y = c1 * s2 * c3 - s1 * c2 * s3;
+ this._z = c1 * c2 * s3 + s1 * s2 * c3;
+ this._w = c1 * c2 * c3 - s1 * s2 * s3;
+
+ } else if ( order === 'YXZ' ) {
+
+ this._x = s1 * c2 * c3 + c1 * s2 * s3;
+ this._y = c1 * s2 * c3 - s1 * c2 * s3;
+ this._z = c1 * c2 * s3 - s1 * s2 * c3;
+ this._w = c1 * c2 * c3 + s1 * s2 * s3;
+
+ } else if ( order === 'ZXY' ) {
+
+ this._x = s1 * c2 * c3 - c1 * s2 * s3;
+ this._y = c1 * s2 * c3 + s1 * c2 * s3;
+ this._z = c1 * c2 * s3 + s1 * s2 * c3;
+ this._w = c1 * c2 * c3 - s1 * s2 * s3;
+
+ } else if ( order === 'ZYX' ) {
+
+ this._x = s1 * c2 * c3 - c1 * s2 * s3;
+ this._y = c1 * s2 * c3 + s1 * c2 * s3;
+ this._z = c1 * c2 * s3 - s1 * s2 * c3;
+ this._w = c1 * c2 * c3 + s1 * s2 * s3;
+
+ } else if ( order === 'YZX' ) {
+
+ this._x = s1 * c2 * c3 + c1 * s2 * s3;
+ this._y = c1 * s2 * c3 + s1 * c2 * s3;
+ this._z = c1 * c2 * s3 - s1 * s2 * c3;
+ this._w = c1 * c2 * c3 - s1 * s2 * s3;
+
+ } else if ( order === 'XZY' ) {
+
+ this._x = s1 * c2 * c3 - c1 * s2 * s3;
+ this._y = c1 * s2 * c3 - s1 * c2 * s3;
+ this._z = c1 * c2 * s3 + s1 * s2 * c3;
+ this._w = c1 * c2 * c3 + s1 * s2 * s3;
+
+ }
+
+ if ( update !== false ) { this._onChangeCallback(); }
+
+ return this;
+
+ },
+
+ setFromAxisAngle: function ( axis, angle ) {
+
+ // http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm
+
+ // assumes axis is normalized
+
+ var halfAngle = angle / 2, s = Math.sin( halfAngle );
+
+ this._x = axis.x * s;
+ this._y = axis.y * s;
+ this._z = axis.z * s;
+ this._w = Math.cos( halfAngle );
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ setFromRotationMatrix: function ( m ) {
+
+ // http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
+
+ // assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+
+ var te = m.elements,
+
+ m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
+ m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
+ m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],
+
+ trace = m11 + m22 + m33,
+ s;
+
+ if ( trace > 0 ) {
+
+ s = 0.5 / Math.sqrt( trace + 1.0 );
+
+ this._w = 0.25 / s;
+ this._x = ( m32 - m23 ) * s;
+ this._y = ( m13 - m31 ) * s;
+ this._z = ( m21 - m12 ) * s;
+
+ } else if ( m11 > m22 && m11 > m33 ) {
+
+ s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );
+
+ this._w = ( m32 - m23 ) / s;
+ this._x = 0.25 * s;
+ this._y = ( m12 + m21 ) / s;
+ this._z = ( m13 + m31 ) / s;
+
+ } else if ( m22 > m33 ) {
+
+ s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );
+
+ this._w = ( m13 - m31 ) / s;
+ this._x = ( m12 + m21 ) / s;
+ this._y = 0.25 * s;
+ this._z = ( m23 + m32 ) / s;
+
+ } else {
+
+ s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );
+
+ this._w = ( m21 - m12 ) / s;
+ this._x = ( m13 + m31 ) / s;
+ this._y = ( m23 + m32 ) / s;
+ this._z = 0.25 * s;
+
+ }
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ setFromUnitVectors: function ( vFrom, vTo ) {
+
+ // assumes direction vectors vFrom and vTo are normalized
+
+ var EPS = 0.000001;
+
+ var r = vFrom.dot( vTo ) + 1;
+
+ if ( r < EPS ) {
+
+ r = 0;
+
+ if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {
+
+ this._x = - vFrom.y;
+ this._y = vFrom.x;
+ this._z = 0;
+ this._w = r;
+
+ } else {
+
+ this._x = 0;
+ this._y = - vFrom.z;
+ this._z = vFrom.y;
+ this._w = r;
+
+ }
+
+ } else {
+
+ // crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3
+
+ this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
+ this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
+ this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
+ this._w = r;
+
+ }
+
+ return this.normalize();
+
+ },
+
+ angleTo: function ( q ) {
+
+ return 2 * Math.acos( Math.abs( _Math.clamp( this.dot( q ), - 1, 1 ) ) );
+
+ },
+
+ rotateTowards: function ( q, step ) {
+
+ var angle = this.angleTo( q );
+
+ if ( angle === 0 ) { return this; }
+
+ var t = Math.min( 1, step / angle );
+
+ this.slerp( q, t );
+
+ return this;
+
+ },
+
+ inverse: function () {
+
+ // quaternion is assumed to have unit length
+
+ return this.conjugate();
+
+ },
+
+ conjugate: function () {
+
+ this._x *= - 1;
+ this._y *= - 1;
+ this._z *= - 1;
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ dot: function ( v ) {
+
+ return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;
+
+ },
+
+ lengthSq: function () {
+
+ return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;
+
+ },
+
+ length: function () {
+
+ return Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );
+
+ },
+
+ normalize: function () {
+
+ var l = this.length();
+
+ if ( l === 0 ) {
+
+ this._x = 0;
+ this._y = 0;
+ this._z = 0;
+ this._w = 1;
+
+ } else {
+
+ l = 1 / l;
+
+ this._x = this._x * l;
+ this._y = this._y * l;
+ this._z = this._z * l;
+ this._w = this._w * l;
+
+ }
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ multiply: function ( q, p ) {
+
+ if ( p !== undefined ) {
+
+ console.warn( 'THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.' );
+ return this.multiplyQuaternions( q, p );
+
+ }
+
+ return this.multiplyQuaternions( this, q );
+
+ },
+
+ premultiply: function ( q ) {
+
+ return this.multiplyQuaternions( q, this );
+
+ },
+
+ multiplyQuaternions: function ( a, b ) {
+
+ // from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm
+
+ var qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
+ var qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;
+
+ this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
+ this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
+ this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
+ this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ slerp: function ( qb, t ) {
+
+ if ( t === 0 ) { return this; }
+ if ( t === 1 ) { return this.copy( qb ); }
+
+ var x = this._x, y = this._y, z = this._z, w = this._w;
+
+ // http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/
+
+ var cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;
+
+ if ( cosHalfTheta < 0 ) {
+
+ this._w = - qb._w;
+ this._x = - qb._x;
+ this._y = - qb._y;
+ this._z = - qb._z;
+
+ cosHalfTheta = - cosHalfTheta;
+
+ } else {
+
+ this.copy( qb );
+
+ }
+
+ if ( cosHalfTheta >= 1.0 ) {
+
+ this._w = w;
+ this._x = x;
+ this._y = y;
+ this._z = z;
+
+ return this;
+
+ }
+
+ var sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;
+
+ if ( sqrSinHalfTheta <= Number.EPSILON ) {
+
+ var s = 1 - t;
+ this._w = s * w + t * this._w;
+ this._x = s * x + t * this._x;
+ this._y = s * y + t * this._y;
+ this._z = s * z + t * this._z;
+
+ this.normalize();
+ this._onChangeCallback();
+
+ return this;
+
+ }
+
+ var sinHalfTheta = Math.sqrt( sqrSinHalfTheta );
+ var halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );
+ var ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
+ ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;
+
+ this._w = ( w * ratioA + this._w * ratioB );
+ this._x = ( x * ratioA + this._x * ratioB );
+ this._y = ( y * ratioA + this._y * ratioB );
+ this._z = ( z * ratioA + this._z * ratioB );
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ equals: function ( quaternion ) {
+
+ return ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );
+
+ },
+
+ fromArray: function ( array, offset ) {
+
+ if ( offset === undefined ) { offset = 0; }
+
+ this._x = array[ offset ];
+ this._y = array[ offset + 1 ];
+ this._z = array[ offset + 2 ];
+ this._w = array[ offset + 3 ];
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ toArray: function ( array, offset ) {
+
+ if ( array === undefined ) { array = []; }
+ if ( offset === undefined ) { offset = 0; }
+
+ array[ offset ] = this._x;
+ array[ offset + 1 ] = this._y;
+ array[ offset + 2 ] = this._z;
+ array[ offset + 3 ] = this._w;
+
+ return array;
+
+ },
+
+ _onChange: function ( callback ) {
+
+ this._onChangeCallback = callback;
+
+ return this;
+
+ },
+
+ _onChangeCallback: function () {}
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author kile / http://kile.stravaganza.org/
+ * @author philogb / http://blog.thejit.org/
+ * @author mikael emtinger / http://gomo.se/
+ * @author egraether / http://egraether.com/
+ * @author WestLangley / http://github.com/WestLangley
+ */
+
+ var _vector = new Vector3();
+ var _quaternion = new Quaternion();
+
+ function Vector3( x, y, z ) {
+
+ this.x = x || 0;
+ this.y = y || 0;
+ this.z = z || 0;
+
+ }
+
+ Object.assign( Vector3.prototype, {
+
+ isVector3: true,
+
+ set: function ( x, y, z ) {
+
+ this.x = x;
+ this.y = y;
+ this.z = z;
+
+ return this;
+
+ },
+
+ setScalar: function ( scalar ) {
+
+ this.x = scalar;
+ this.y = scalar;
+ this.z = scalar;
+
+ return this;
+
+ },
+
+ setX: function ( x ) {
+
+ this.x = x;
+
+ return this;
+
+ },
+
+ setY: function ( y ) {
+
+ this.y = y;
+
+ return this;
+
+ },
+
+ setZ: function ( z ) {
+
+ this.z = z;
+
+ return this;
+
+ },
+
+ setComponent: function ( index, value ) {
+
+ switch ( index ) {
+
+ case 0: this.x = value; break;
+ case 1: this.y = value; break;
+ case 2: this.z = value; break;
+ default: throw new Error( 'index is out of range: ' + index );
+
+ }
+
+ return this;
+
+ },
+
+ getComponent: function ( index ) {
+
+ switch ( index ) {
+
+ case 0: return this.x;
+ case 1: return this.y;
+ case 2: return this.z;
+ default: throw new Error( 'index is out of range: ' + index );
+
+ }
+
+ },
+
+ clone: function () {
+
+ return new this.constructor( this.x, this.y, this.z );
+
+ },
+
+ copy: function ( v ) {
+
+ this.x = v.x;
+ this.y = v.y;
+ this.z = v.z;
+
+ return this;
+
+ },
+
+ add: function ( v, w ) {
+
+ if ( w !== undefined ) {
+
+ console.warn( 'THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
+ return this.addVectors( v, w );
+
+ }
+
+ this.x += v.x;
+ this.y += v.y;
+ this.z += v.z;
+
+ return this;
+
+ },
+
+ addScalar: function ( s ) {
+
+ this.x += s;
+ this.y += s;
+ this.z += s;
+
+ return this;
+
+ },
+
+ addVectors: function ( a, b ) {
+
+ this.x = a.x + b.x;
+ this.y = a.y + b.y;
+ this.z = a.z + b.z;
+
+ return this;
+
+ },
+
+ addScaledVector: function ( v, s ) {
+
+ this.x += v.x * s;
+ this.y += v.y * s;
+ this.z += v.z * s;
+
+ return this;
+
+ },
+
+ sub: function ( v, w ) {
+
+ if ( w !== undefined ) {
+
+ console.warn( 'THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
+ return this.subVectors( v, w );
+
+ }
+
+ this.x -= v.x;
+ this.y -= v.y;
+ this.z -= v.z;
+
+ return this;
+
+ },
+
+ subScalar: function ( s ) {
+
+ this.x -= s;
+ this.y -= s;
+ this.z -= s;
+
+ return this;
+
+ },
+
+ subVectors: function ( a, b ) {
+
+ this.x = a.x - b.x;
+ this.y = a.y - b.y;
+ this.z = a.z - b.z;
+
+ return this;
+
+ },
+
+ multiply: function ( v, w ) {
+
+ if ( w !== undefined ) {
+
+ console.warn( 'THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.' );
+ return this.multiplyVectors( v, w );
+
+ }
+
+ this.x *= v.x;
+ this.y *= v.y;
+ this.z *= v.z;
+
+ return this;
+
+ },
+
+ multiplyScalar: function ( scalar ) {
+
+ this.x *= scalar;
+ this.y *= scalar;
+ this.z *= scalar;
+
+ return this;
+
+ },
+
+ multiplyVectors: function ( a, b ) {
+
+ this.x = a.x * b.x;
+ this.y = a.y * b.y;
+ this.z = a.z * b.z;
+
+ return this;
+
+ },
+
+ applyEuler: function ( euler ) {
+
+ if ( ! ( euler && euler.isEuler ) ) {
+
+ console.error( 'THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.' );
+
+ }
+
+ return this.applyQuaternion( _quaternion.setFromEuler( euler ) );
+
+ },
+
+ applyAxisAngle: function ( axis, angle ) {
+
+ return this.applyQuaternion( _quaternion.setFromAxisAngle( axis, angle ) );
+
+ },
+
+ applyMatrix3: function ( m ) {
+
+ var x = this.x, y = this.y, z = this.z;
+ var e = m.elements;
+
+ this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;
+ this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;
+ this.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;
+
+ return this;
+
+ },
+
+ applyMatrix4: function ( m ) {
+
+ var x = this.x, y = this.y, z = this.z;
+ var e = m.elements;
+
+ var w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );
+
+ this.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;
+ this.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;
+ this.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;
+
+ return this;
+
+ },
+
+ applyQuaternion: function ( q ) {
+
+ var x = this.x, y = this.y, z = this.z;
+ var qx = q.x, qy = q.y, qz = q.z, qw = q.w;
+
+ // calculate quat * vector
+
+ var ix = qw * x + qy * z - qz * y;
+ var iy = qw * y + qz * x - qx * z;
+ var iz = qw * z + qx * y - qy * x;
+ var iw = - qx * x - qy * y - qz * z;
+
+ // calculate result * inverse quat
+
+ this.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;
+ this.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;
+ this.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;
+
+ return this;
+
+ },
+
+ project: function ( camera ) {
+
+ return this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );
+
+ },
+
+ unproject: function ( camera ) {
+
+ return this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );
+
+ },
+
+ transformDirection: function ( m ) {
+
+ // input: THREE.Matrix4 affine matrix
+ // vector interpreted as a direction
+
+ var x = this.x, y = this.y, z = this.z;
+ var e = m.elements;
+
+ this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;
+ this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;
+ this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;
+
+ return this.normalize();
+
+ },
+
+ divide: function ( v ) {
+
+ this.x /= v.x;
+ this.y /= v.y;
+ this.z /= v.z;
+
+ return this;
+
+ },
+
+ divideScalar: function ( scalar ) {
+
+ return this.multiplyScalar( 1 / scalar );
+
+ },
+
+ min: function ( v ) {
+
+ this.x = Math.min( this.x, v.x );
+ this.y = Math.min( this.y, v.y );
+ this.z = Math.min( this.z, v.z );
+
+ return this;
+
+ },
+
+ max: function ( v ) {
+
+ this.x = Math.max( this.x, v.x );
+ this.y = Math.max( this.y, v.y );
+ this.z = Math.max( this.z, v.z );
+
+ return this;
+
+ },
+
+ clamp: function ( min, max ) {
+
+ // assumes min < max, componentwise
+
+ this.x = Math.max( min.x, Math.min( max.x, this.x ) );
+ this.y = Math.max( min.y, Math.min( max.y, this.y ) );
+ this.z = Math.max( min.z, Math.min( max.z, this.z ) );
+
+ return this;
+
+ },
+
+ clampScalar: function ( minVal, maxVal ) {
+
+ this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
+ this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
+ this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
+
+ return this;
+
+ },
+
+ clampLength: function ( min, max ) {
+
+ var length = this.length();
+
+ return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
+
+ },
+
+ floor: function () {
+
+ this.x = Math.floor( this.x );
+ this.y = Math.floor( this.y );
+ this.z = Math.floor( this.z );
+
+ return this;
+
+ },
+
+ ceil: function () {
+
+ this.x = Math.ceil( this.x );
+ this.y = Math.ceil( this.y );
+ this.z = Math.ceil( this.z );
+
+ return this;
+
+ },
+
+ round: function () {
+
+ this.x = Math.round( this.x );
+ this.y = Math.round( this.y );
+ this.z = Math.round( this.z );
+
+ return this;
+
+ },
+
+ roundToZero: function () {
+
+ this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
+ this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
+ this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
+
+ return this;
+
+ },
+
+ negate: function () {
+
+ this.x = - this.x;
+ this.y = - this.y;
+ this.z = - this.z;
+
+ return this;
+
+ },
+
+ dot: function ( v ) {
+
+ return this.x * v.x + this.y * v.y + this.z * v.z;
+
+ },
+
+ // TODO lengthSquared?
+
+ lengthSq: function () {
+
+ return this.x * this.x + this.y * this.y + this.z * this.z;
+
+ },
+
+ length: function () {
+
+ return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );
+
+ },
+
+ manhattanLength: function () {
+
+ return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );
+
+ },
+
+ normalize: function () {
+
+ return this.divideScalar( this.length() || 1 );
+
+ },
+
+ setLength: function ( length ) {
+
+ return this.normalize().multiplyScalar( length );
+
+ },
+
+ lerp: function ( v, alpha ) {
+
+ this.x += ( v.x - this.x ) * alpha;
+ this.y += ( v.y - this.y ) * alpha;
+ this.z += ( v.z - this.z ) * alpha;
+
+ return this;
+
+ },
+
+ lerpVectors: function ( v1, v2, alpha ) {
+
+ return this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 );
+
+ },
+
+ cross: function ( v, w ) {
+
+ if ( w !== undefined ) {
+
+ console.warn( 'THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.' );
+ return this.crossVectors( v, w );
+
+ }
+
+ return this.crossVectors( this, v );
+
+ },
+
+ crossVectors: function ( a, b ) {
+
+ var ax = a.x, ay = a.y, az = a.z;
+ var bx = b.x, by = b.y, bz = b.z;
+
+ this.x = ay * bz - az * by;
+ this.y = az * bx - ax * bz;
+ this.z = ax * by - ay * bx;
+
+ return this;
+
+ },
+
+ projectOnVector: function ( v ) {
+
+ // v cannot be the zero v
+
+ var scalar = v.dot( this ) / v.lengthSq();
+
+ return this.copy( v ).multiplyScalar( scalar );
+
+ },
+
+ projectOnPlane: function ( planeNormal ) {
+
+ _vector.copy( this ).projectOnVector( planeNormal );
+
+ return this.sub( _vector );
+
+ },
+
+ reflect: function ( normal ) {
+
+ // reflect incident vector off plane orthogonal to normal
+ // normal is assumed to have unit length
+
+ return this.sub( _vector.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );
+
+ },
+
+ angleTo: function ( v ) {
+
+ var denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );
+
+ if ( denominator === 0 ) { console.error( 'THREE.Vector3: angleTo() can\'t handle zero length vectors.' ); }
+
+ var theta = this.dot( v ) / denominator;
+
+ // clamp, to handle numerical problems
+
+ return Math.acos( _Math.clamp( theta, - 1, 1 ) );
+
+ },
+
+ distanceTo: function ( v ) {
+
+ return Math.sqrt( this.distanceToSquared( v ) );
+
+ },
+
+ distanceToSquared: function ( v ) {
+
+ var dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;
+
+ return dx * dx + dy * dy + dz * dz;
+
+ },
+
+ manhattanDistanceTo: function ( v ) {
+
+ return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );
+
+ },
+
+ setFromSpherical: function ( s ) {
+
+ return this.setFromSphericalCoords( s.radius, s.phi, s.theta );
+
+ },
+
+ setFromSphericalCoords: function ( radius, phi, theta ) {
+
+ var sinPhiRadius = Math.sin( phi ) * radius;
+
+ this.x = sinPhiRadius * Math.sin( theta );
+ this.y = Math.cos( phi ) * radius;
+ this.z = sinPhiRadius * Math.cos( theta );
+
+ return this;
+
+ },
+
+ setFromCylindrical: function ( c ) {
+
+ return this.setFromCylindricalCoords( c.radius, c.theta, c.y );
+
+ },
+
+ setFromCylindricalCoords: function ( radius, theta, y ) {
+
+ this.x = radius * Math.sin( theta );
+ this.y = y;
+ this.z = radius * Math.cos( theta );
+
+ return this;
+
+ },
+
+ setFromMatrixPosition: function ( m ) {
+
+ var e = m.elements;
+
+ this.x = e[ 12 ];
+ this.y = e[ 13 ];
+ this.z = e[ 14 ];
+
+ return this;
+
+ },
+
+ setFromMatrixScale: function ( m ) {
+
+ var sx = this.setFromMatrixColumn( m, 0 ).length();
+ var sy = this.setFromMatrixColumn( m, 1 ).length();
+ var sz = this.setFromMatrixColumn( m, 2 ).length();
+
+ this.x = sx;
+ this.y = sy;
+ this.z = sz;
+
+ return this;
+
+ },
+
+ setFromMatrixColumn: function ( m, index ) {
+
+ return this.fromArray( m.elements, index * 4 );
+
+ },
+
+ equals: function ( v ) {
+
+ return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );
+
+ },
+
+ fromArray: function ( array, offset ) {
+
+ if ( offset === undefined ) { offset = 0; }
+
+ this.x = array[ offset ];
+ this.y = array[ offset + 1 ];
+ this.z = array[ offset + 2 ];
+
+ return this;
+
+ },
+
+ toArray: function ( array, offset ) {
+
+ if ( array === undefined ) { array = []; }
+ if ( offset === undefined ) { offset = 0; }
+
+ array[ offset ] = this.x;
+ array[ offset + 1 ] = this.y;
+ array[ offset + 2 ] = this.z;
+
+ return array;
+
+ },
+
+ fromBufferAttribute: function ( attribute, index, offset ) {
+
+ if ( offset !== undefined ) {
+
+ console.warn( 'THREE.Vector3: offset has been removed from .fromBufferAttribute().' );
+
+ }
+
+ this.x = attribute.getX( index );
+ this.y = attribute.getY( index );
+ this.z = attribute.getZ( index );
+
+ return this;
+
+ }
+
+ } );
+
+ /**
+ * @author alteredq / http://alteredqualia.com/
+ * @author WestLangley / http://github.com/WestLangley
+ * @author bhouston / http://clara.io
+ * @author tschw
+ */
+
+ var _vector$1 = new Vector3();
+
+ function Matrix3() {
+
+ this.elements = [
+
+ 1, 0, 0,
+ 0, 1, 0,
+ 0, 0, 1
+
+ ];
+
+ if ( arguments.length > 0 ) {
+
+ console.error( 'THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.' );
+
+ }
+
+ }
+
+ Object.assign( Matrix3.prototype, {
+
+ isMatrix3: true,
+
+ set: function ( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {
+
+ var te = this.elements;
+
+ te[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;
+ te[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;
+ te[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;
+
+ return this;
+
+ },
+
+ identity: function () {
+
+ this.set(
+
+ 1, 0, 0,
+ 0, 1, 0,
+ 0, 0, 1
+
+ );
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().fromArray( this.elements );
+
+ },
+
+ copy: function ( m ) {
+
+ var te = this.elements;
+ var me = m.elements;
+
+ te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];
+ te[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];
+ te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];
+
+ return this;
+
+ },
+
+ setFromMatrix4: function ( m ) {
+
+ var me = m.elements;
+
+ this.set(
+
+ me[ 0 ], me[ 4 ], me[ 8 ],
+ me[ 1 ], me[ 5 ], me[ 9 ],
+ me[ 2 ], me[ 6 ], me[ 10 ]
+
+ );
+
+ return this;
+
+ },
+
+ applyToBufferAttribute: function ( attribute ) {
+
+ for ( var i = 0, l = attribute.count; i < l; i ++ ) {
+
+ _vector$1.x = attribute.getX( i );
+ _vector$1.y = attribute.getY( i );
+ _vector$1.z = attribute.getZ( i );
+
+ _vector$1.applyMatrix3( this );
+
+ attribute.setXYZ( i, _vector$1.x, _vector$1.y, _vector$1.z );
+
+ }
+
+ return attribute;
+
+ },
+
+ multiply: function ( m ) {
+
+ return this.multiplyMatrices( this, m );
+
+ },
+
+ premultiply: function ( m ) {
+
+ return this.multiplyMatrices( m, this );
+
+ },
+
+ multiplyMatrices: function ( a, b ) {
+
+ var ae = a.elements;
+ var be = b.elements;
+ var te = this.elements;
+
+ var a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];
+ var a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];
+ var a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];
+
+ var b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];
+ var b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];
+ var b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];
+
+ te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;
+ te[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;
+ te[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;
+
+ te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;
+ te[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;
+ te[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;
+
+ te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;
+ te[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;
+ te[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;
+
+ return this;
+
+ },
+
+ multiplyScalar: function ( s ) {
+
+ var te = this.elements;
+
+ te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
+ te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
+ te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;
+
+ return this;
+
+ },
+
+ determinant: function () {
+
+ var te = this.elements;
+
+ var a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
+ d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
+ g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];
+
+ return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
+
+ },
+
+ getInverse: function ( matrix, throwOnDegenerate ) {
+
+ if ( matrix && matrix.isMatrix4 ) {
+
+ console.error( "THREE.Matrix3: .getInverse() no longer takes a Matrix4 argument." );
+
+ }
+
+ var me = matrix.elements,
+ te = this.elements,
+
+ n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ],
+ n12 = me[ 3 ], n22 = me[ 4 ], n32 = me[ 5 ],
+ n13 = me[ 6 ], n23 = me[ 7 ], n33 = me[ 8 ],
+
+ t11 = n33 * n22 - n32 * n23,
+ t12 = n32 * n13 - n33 * n12,
+ t13 = n23 * n12 - n22 * n13,
+
+ det = n11 * t11 + n21 * t12 + n31 * t13;
+
+ if ( det === 0 ) {
+
+ var msg = "THREE.Matrix3: .getInverse() can't invert matrix, determinant is 0";
+
+ if ( throwOnDegenerate === true ) {
+
+ throw new Error( msg );
+
+ } else {
+
+ console.warn( msg );
+
+ }
+
+ return this.identity();
+
+ }
+
+ var detInv = 1 / det;
+
+ te[ 0 ] = t11 * detInv;
+ te[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;
+ te[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;
+
+ te[ 3 ] = t12 * detInv;
+ te[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;
+ te[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;
+
+ te[ 6 ] = t13 * detInv;
+ te[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;
+ te[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;
+
+ return this;
+
+ },
+
+ transpose: function () {
+
+ var tmp, m = this.elements;
+
+ tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
+ tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
+ tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;
+
+ return this;
+
+ },
+
+ getNormalMatrix: function ( matrix4 ) {
+
+ return this.setFromMatrix4( matrix4 ).getInverse( this ).transpose();
+
+ },
+
+ transposeIntoArray: function ( r ) {
+
+ var m = this.elements;
+
+ r[ 0 ] = m[ 0 ];
+ r[ 1 ] = m[ 3 ];
+ r[ 2 ] = m[ 6 ];
+ r[ 3 ] = m[ 1 ];
+ r[ 4 ] = m[ 4 ];
+ r[ 5 ] = m[ 7 ];
+ r[ 6 ] = m[ 2 ];
+ r[ 7 ] = m[ 5 ];
+ r[ 8 ] = m[ 8 ];
+
+ return this;
+
+ },
+
+ setUvTransform: function ( tx, ty, sx, sy, rotation, cx, cy ) {
+
+ var c = Math.cos( rotation );
+ var s = Math.sin( rotation );
+
+ this.set(
+ sx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,
+ - sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,
+ 0, 0, 1
+ );
+
+ },
+
+ scale: function ( sx, sy ) {
+
+ var te = this.elements;
+
+ te[ 0 ] *= sx; te[ 3 ] *= sx; te[ 6 ] *= sx;
+ te[ 1 ] *= sy; te[ 4 ] *= sy; te[ 7 ] *= sy;
+
+ return this;
+
+ },
+
+ rotate: function ( theta ) {
+
+ var c = Math.cos( theta );
+ var s = Math.sin( theta );
+
+ var te = this.elements;
+
+ var a11 = te[ 0 ], a12 = te[ 3 ], a13 = te[ 6 ];
+ var a21 = te[ 1 ], a22 = te[ 4 ], a23 = te[ 7 ];
+
+ te[ 0 ] = c * a11 + s * a21;
+ te[ 3 ] = c * a12 + s * a22;
+ te[ 6 ] = c * a13 + s * a23;
+
+ te[ 1 ] = - s * a11 + c * a21;
+ te[ 4 ] = - s * a12 + c * a22;
+ te[ 7 ] = - s * a13 + c * a23;
+
+ return this;
+
+ },
+
+ translate: function ( tx, ty ) {
+
+ var te = this.elements;
+
+ te[ 0 ] += tx * te[ 2 ]; te[ 3 ] += tx * te[ 5 ]; te[ 6 ] += tx * te[ 8 ];
+ te[ 1 ] += ty * te[ 2 ]; te[ 4 ] += ty * te[ 5 ]; te[ 7 ] += ty * te[ 8 ];
+
+ return this;
+
+ },
+
+ equals: function ( matrix ) {
+
+ var te = this.elements;
+ var me = matrix.elements;
+
+ for ( var i = 0; i < 9; i ++ ) {
+
+ if ( te[ i ] !== me[ i ] ) { return false; }
+
+ }
+
+ return true;
+
+ },
+
+ fromArray: function ( array, offset ) {
+
+ if ( offset === undefined ) { offset = 0; }
+
+ for ( var i = 0; i < 9; i ++ ) {
+
+ this.elements[ i ] = array[ i + offset ];
+
+ }
+
+ return this;
+
+ },
+
+ toArray: function ( array, offset ) {
+
+ if ( array === undefined ) { array = []; }
+ if ( offset === undefined ) { offset = 0; }
+
+ var te = this.elements;
+
+ array[ offset ] = te[ 0 ];
+ array[ offset + 1 ] = te[ 1 ];
+ array[ offset + 2 ] = te[ 2 ];
+
+ array[ offset + 3 ] = te[ 3 ];
+ array[ offset + 4 ] = te[ 4 ];
+ array[ offset + 5 ] = te[ 5 ];
+
+ array[ offset + 6 ] = te[ 6 ];
+ array[ offset + 7 ] = te[ 7 ];
+ array[ offset + 8 ] = te[ 8 ];
+
+ return array;
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author alteredq / http://alteredqualia.com/
+ * @author szimek / https://github.com/szimek/
+ */
+
+ var _canvas;
+
+ var ImageUtils = {
+
+ getDataURL: function ( image ) {
+
+ var canvas;
+
+ if ( typeof HTMLCanvasElement == 'undefined' ) {
+
+ return image.src;
+
+ } else if ( image instanceof HTMLCanvasElement ) {
+
+ canvas = image;
+
+ } else {
+
+ if ( _canvas === undefined ) { _canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' ); }
+
+ _canvas.width = image.width;
+ _canvas.height = image.height;
+
+ var context = _canvas.getContext( '2d' );
+
+ if ( image instanceof ImageData ) {
+
+ context.putImageData( image, 0, 0 );
+
+ } else {
+
+ context.drawImage( image, 0, 0, image.width, image.height );
+
+ }
+
+ canvas = _canvas;
+
+ }
+
+ if ( canvas.width > 2048 || canvas.height > 2048 ) {
+
+ return canvas.toDataURL( 'image/jpeg', 0.6 );
+
+ } else {
+
+ return canvas.toDataURL( 'image/png' );
+
+ }
+
+ }
+
+ };
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author alteredq / http://alteredqualia.com/
+ * @author szimek / https://github.com/szimek/
+ */
+
+ var textureId = 0;
+
+ function Texture( image, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {
+
+ Object.defineProperty( this, 'id', { value: textureId ++ } );
+
+ this.uuid = _Math.generateUUID();
+
+ this.name = '';
+
+ this.image = image !== undefined ? image : Texture.DEFAULT_IMAGE;
+ this.mipmaps = [];
+
+ this.mapping = mapping !== undefined ? mapping : Texture.DEFAULT_MAPPING;
+
+ this.wrapS = wrapS !== undefined ? wrapS : ClampToEdgeWrapping;
+ this.wrapT = wrapT !== undefined ? wrapT : ClampToEdgeWrapping;
+
+ this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
+ this.minFilter = minFilter !== undefined ? minFilter : LinearMipmapLinearFilter;
+
+ this.anisotropy = anisotropy !== undefined ? anisotropy : 1;
+
+ this.format = format !== undefined ? format : RGBAFormat;
+ this.type = type !== undefined ? type : UnsignedByteType;
+
+ this.offset = new Vector2( 0, 0 );
+ this.repeat = new Vector2( 1, 1 );
+ this.center = new Vector2( 0, 0 );
+ this.rotation = 0;
+
+ this.matrixAutoUpdate = true;
+ this.matrix = new Matrix3();
+
+ this.generateMipmaps = true;
+ this.premultiplyAlpha = false;
+ this.flipY = true;
+ this.unpackAlignment = 4; // valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)
+
+ // Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.
+ //
+ // Also changing the encoding after already used by a Material will not automatically make the Material
+ // update. You need to explicitly call Material.needsUpdate to trigger it to recompile.
+ this.encoding = encoding !== undefined ? encoding : LinearEncoding;
+
+ this.version = 0;
+ this.onUpdate = null;
+
+ }
+
+ Texture.DEFAULT_IMAGE = undefined;
+ Texture.DEFAULT_MAPPING = UVMapping;
+
+ Texture.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+
+ constructor: Texture,
+
+ isTexture: true,
+
+ updateMatrix: function () {
+
+ this.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ },
+
+ copy: function ( source ) {
+
+ this.name = source.name;
+
+ this.image = source.image;
+ this.mipmaps = source.mipmaps.slice( 0 );
+
+ this.mapping = source.mapping;
+
+ this.wrapS = source.wrapS;
+ this.wrapT = source.wrapT;
+
+ this.magFilter = source.magFilter;
+ this.minFilter = source.minFilter;
+
+ this.anisotropy = source.anisotropy;
+
+ this.format = source.format;
+ this.type = source.type;
+
+ this.offset.copy( source.offset );
+ this.repeat.copy( source.repeat );
+ this.center.copy( source.center );
+ this.rotation = source.rotation;
+
+ this.matrixAutoUpdate = source.matrixAutoUpdate;
+ this.matrix.copy( source.matrix );
+
+ this.generateMipmaps = source.generateMipmaps;
+ this.premultiplyAlpha = source.premultiplyAlpha;
+ this.flipY = source.flipY;
+ this.unpackAlignment = source.unpackAlignment;
+ this.encoding = source.encoding;
+
+ return this;
+
+ },
+
+ toJSON: function ( meta ) {
+
+ var isRootObject = ( meta === undefined || typeof meta === 'string' );
+
+ if ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {
+
+ return meta.textures[ this.uuid ];
+
+ }
+
+ var output = {
+
+ metadata: {
+ version: 4.5,
+ type: 'Texture',
+ generator: 'Texture.toJSON'
+ },
+
+ uuid: this.uuid,
+ name: this.name,
+
+ mapping: this.mapping,
+
+ repeat: [ this.repeat.x, this.repeat.y ],
+ offset: [ this.offset.x, this.offset.y ],
+ center: [ this.center.x, this.center.y ],
+ rotation: this.rotation,
+
+ wrap: [ this.wrapS, this.wrapT ],
+
+ format: this.format,
+ type: this.type,
+ encoding: this.encoding,
+
+ minFilter: this.minFilter,
+ magFilter: this.magFilter,
+ anisotropy: this.anisotropy,
+
+ flipY: this.flipY,
+
+ premultiplyAlpha: this.premultiplyAlpha,
+ unpackAlignment: this.unpackAlignment
+
+ };
+
+ if ( this.image !== undefined ) {
+
+ // TODO: Move to THREE.Image
+
+ var image = this.image;
+
+ if ( image.uuid === undefined ) {
+
+ image.uuid = _Math.generateUUID(); // UGH
+
+ }
+
+ if ( ! isRootObject && meta.images[ image.uuid ] === undefined ) {
+
+ var url;
+
+ if ( Array.isArray( image ) ) {
+
+ // process array of images e.g. CubeTexture
+
+ url = [];
+
+ for ( var i = 0, l = image.length; i < l; i ++ ) {
+
+ url.push( ImageUtils.getDataURL( image[ i ] ) );
+
+ }
+
+ } else {
+
+ // process single image
+
+ url = ImageUtils.getDataURL( image );
+
+ }
+
+ meta.images[ image.uuid ] = {
+ uuid: image.uuid,
+ url: url
+ };
+
+ }
+
+ output.image = image.uuid;
+
+ }
+
+ if ( ! isRootObject ) {
+
+ meta.textures[ this.uuid ] = output;
+
+ }
+
+ return output;
+
+ },
+
+ dispose: function () {
+
+ this.dispatchEvent( { type: 'dispose' } );
+
+ },
+
+ transformUv: function ( uv ) {
+
+ if ( this.mapping !== UVMapping ) { return uv; }
+
+ uv.applyMatrix3( this.matrix );
+
+ if ( uv.x < 0 || uv.x > 1 ) {
+
+ switch ( this.wrapS ) {
+
+ case RepeatWrapping:
+
+ uv.x = uv.x - Math.floor( uv.x );
+ break;
+
+ case ClampToEdgeWrapping:
+
+ uv.x = uv.x < 0 ? 0 : 1;
+ break;
+
+ case MirroredRepeatWrapping:
+
+ if ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {
+
+ uv.x = Math.ceil( uv.x ) - uv.x;
+
+ } else {
+
+ uv.x = uv.x - Math.floor( uv.x );
+
+ }
+ break;
+
+ }
+
+ }
+
+ if ( uv.y < 0 || uv.y > 1 ) {
+
+ switch ( this.wrapT ) {
+
+ case RepeatWrapping:
+
+ uv.y = uv.y - Math.floor( uv.y );
+ break;
+
+ case ClampToEdgeWrapping:
+
+ uv.y = uv.y < 0 ? 0 : 1;
+ break;
+
+ case MirroredRepeatWrapping:
+
+ if ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {
+
+ uv.y = Math.ceil( uv.y ) - uv.y;
+
+ } else {
+
+ uv.y = uv.y - Math.floor( uv.y );
+
+ }
+ break;
+
+ }
+
+ }
+
+ if ( this.flipY ) {
+
+ uv.y = 1 - uv.y;
+
+ }
+
+ return uv;
+
+ }
+
+ } );
+
+ Object.defineProperty( Texture.prototype, "needsUpdate", {
+
+ set: function ( value ) {
+
+ if ( value === true ) { this.version ++; }
+
+ }
+
+ } );
+
+ /**
+ * @author supereggbert / http://www.paulbrunt.co.uk/
+ * @author philogb / http://blog.thejit.org/
+ * @author mikael emtinger / http://gomo.se/
+ * @author egraether / http://egraether.com/
+ * @author WestLangley / http://github.com/WestLangley
+ */
+
+ function Vector4( x, y, z, w ) {
+
+ this.x = x || 0;
+ this.y = y || 0;
+ this.z = z || 0;
+ this.w = ( w !== undefined ) ? w : 1;
+
+ }
+
+ Object.defineProperties( Vector4.prototype, {
+
+ "width": {
+
+ get: function () {
+
+ return this.z;
+
+ },
+
+ set: function ( value ) {
+
+ this.z = value;
+
+ }
+
+ },
+
+ "height": {
+
+ get: function () {
+
+ return this.w;
+
+ },
+
+ set: function ( value ) {
+
+ this.w = value;
+
+ }
+
+ }
+
+ } );
+
+ Object.assign( Vector4.prototype, {
+
+ isVector4: true,
+
+ set: function ( x, y, z, w ) {
+
+ this.x = x;
+ this.y = y;
+ this.z = z;
+ this.w = w;
+
+ return this;
+
+ },
+
+ setScalar: function ( scalar ) {
+
+ this.x = scalar;
+ this.y = scalar;
+ this.z = scalar;
+ this.w = scalar;
+
+ return this;
+
+ },
+
+ setX: function ( x ) {
+
+ this.x = x;
+
+ return this;
+
+ },
+
+ setY: function ( y ) {
+
+ this.y = y;
+
+ return this;
+
+ },
+
+ setZ: function ( z ) {
+
+ this.z = z;
+
+ return this;
+
+ },
+
+ setW: function ( w ) {
+
+ this.w = w;
+
+ return this;
+
+ },
+
+ setComponent: function ( index, value ) {
+
+ switch ( index ) {
+
+ case 0: this.x = value; break;
+ case 1: this.y = value; break;
+ case 2: this.z = value; break;
+ case 3: this.w = value; break;
+ default: throw new Error( 'index is out of range: ' + index );
+
+ }
+
+ return this;
+
+ },
+
+ getComponent: function ( index ) {
+
+ switch ( index ) {
+
+ case 0: return this.x;
+ case 1: return this.y;
+ case 2: return this.z;
+ case 3: return this.w;
+ default: throw new Error( 'index is out of range: ' + index );
+
+ }
+
+ },
+
+ clone: function () {
+
+ return new this.constructor( this.x, this.y, this.z, this.w );
+
+ },
+
+ copy: function ( v ) {
+
+ this.x = v.x;
+ this.y = v.y;
+ this.z = v.z;
+ this.w = ( v.w !== undefined ) ? v.w : 1;
+
+ return this;
+
+ },
+
+ add: function ( v, w ) {
+
+ if ( w !== undefined ) {
+
+ console.warn( 'THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
+ return this.addVectors( v, w );
+
+ }
+
+ this.x += v.x;
+ this.y += v.y;
+ this.z += v.z;
+ this.w += v.w;
+
+ return this;
+
+ },
+
+ addScalar: function ( s ) {
+
+ this.x += s;
+ this.y += s;
+ this.z += s;
+ this.w += s;
+
+ return this;
+
+ },
+
+ addVectors: function ( a, b ) {
+
+ this.x = a.x + b.x;
+ this.y = a.y + b.y;
+ this.z = a.z + b.z;
+ this.w = a.w + b.w;
+
+ return this;
+
+ },
+
+ addScaledVector: function ( v, s ) {
+
+ this.x += v.x * s;
+ this.y += v.y * s;
+ this.z += v.z * s;
+ this.w += v.w * s;
+
+ return this;
+
+ },
+
+ sub: function ( v, w ) {
+
+ if ( w !== undefined ) {
+
+ console.warn( 'THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
+ return this.subVectors( v, w );
+
+ }
+
+ this.x -= v.x;
+ this.y -= v.y;
+ this.z -= v.z;
+ this.w -= v.w;
+
+ return this;
+
+ },
+
+ subScalar: function ( s ) {
+
+ this.x -= s;
+ this.y -= s;
+ this.z -= s;
+ this.w -= s;
+
+ return this;
+
+ },
+
+ subVectors: function ( a, b ) {
+
+ this.x = a.x - b.x;
+ this.y = a.y - b.y;
+ this.z = a.z - b.z;
+ this.w = a.w - b.w;
+
+ return this;
+
+ },
+
+ multiplyScalar: function ( scalar ) {
+
+ this.x *= scalar;
+ this.y *= scalar;
+ this.z *= scalar;
+ this.w *= scalar;
+
+ return this;
+
+ },
+
+ applyMatrix4: function ( m ) {
+
+ var x = this.x, y = this.y, z = this.z, w = this.w;
+ var e = m.elements;
+
+ this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;
+ this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;
+ this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;
+ this.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;
+
+ return this;
+
+ },
+
+ divideScalar: function ( scalar ) {
+
+ return this.multiplyScalar( 1 / scalar );
+
+ },
+
+ setAxisAngleFromQuaternion: function ( q ) {
+
+ // http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm
+
+ // q is assumed to be normalized
+
+ this.w = 2 * Math.acos( q.w );
+
+ var s = Math.sqrt( 1 - q.w * q.w );
+
+ if ( s < 0.0001 ) {
+
+ this.x = 1;
+ this.y = 0;
+ this.z = 0;
+
+ } else {
+
+ this.x = q.x / s;
+ this.y = q.y / s;
+ this.z = q.z / s;
+
+ }
+
+ return this;
+
+ },
+
+ setAxisAngleFromRotationMatrix: function ( m ) {
+
+ // http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm
+
+ // assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+
+ var angle, x, y, z, // variables for result
+ epsilon = 0.01, // margin to allow for rounding errors
+ epsilon2 = 0.1, // margin to distinguish between 0 and 180 degrees
+
+ te = m.elements,
+
+ m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
+ m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
+ m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
+
+ if ( ( Math.abs( m12 - m21 ) < epsilon ) &&
+ ( Math.abs( m13 - m31 ) < epsilon ) &&
+ ( Math.abs( m23 - m32 ) < epsilon ) ) {
+
+ // singularity found
+ // first check for identity matrix which must have +1 for all terms
+ // in leading diagonal and zero in other terms
+
+ if ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&
+ ( Math.abs( m13 + m31 ) < epsilon2 ) &&
+ ( Math.abs( m23 + m32 ) < epsilon2 ) &&
+ ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {
+
+ // this singularity is identity matrix so angle = 0
+
+ this.set( 1, 0, 0, 0 );
+
+ return this; // zero angle, arbitrary axis
+
+ }
+
+ // otherwise this singularity is angle = 180
+
+ angle = Math.PI;
+
+ var xx = ( m11 + 1 ) / 2;
+ var yy = ( m22 + 1 ) / 2;
+ var zz = ( m33 + 1 ) / 2;
+ var xy = ( m12 + m21 ) / 4;
+ var xz = ( m13 + m31 ) / 4;
+ var yz = ( m23 + m32 ) / 4;
+
+ if ( ( xx > yy ) && ( xx > zz ) ) {
+
+ // m11 is the largest diagonal term
+
+ if ( xx < epsilon ) {
+
+ x = 0;
+ y = 0.707106781;
+ z = 0.707106781;
+
+ } else {
+
+ x = Math.sqrt( xx );
+ y = xy / x;
+ z = xz / x;
+
+ }
+
+ } else if ( yy > zz ) {
+
+ // m22 is the largest diagonal term
+
+ if ( yy < epsilon ) {
+
+ x = 0.707106781;
+ y = 0;
+ z = 0.707106781;
+
+ } else {
+
+ y = Math.sqrt( yy );
+ x = xy / y;
+ z = yz / y;
+
+ }
+
+ } else {
+
+ // m33 is the largest diagonal term so base result on this
+
+ if ( zz < epsilon ) {
+
+ x = 0.707106781;
+ y = 0.707106781;
+ z = 0;
+
+ } else {
+
+ z = Math.sqrt( zz );
+ x = xz / z;
+ y = yz / z;
+
+ }
+
+ }
+
+ this.set( x, y, z, angle );
+
+ return this; // return 180 deg rotation
+
+ }
+
+ // as we have reached here there are no singularities so we can handle normally
+
+ var s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +
+ ( m13 - m31 ) * ( m13 - m31 ) +
+ ( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize
+
+ if ( Math.abs( s ) < 0.001 ) { s = 1; }
+
+ // prevent divide by zero, should not happen if matrix is orthogonal and should be
+ // caught by singularity test above, but I've left it in just in case
+
+ this.x = ( m32 - m23 ) / s;
+ this.y = ( m13 - m31 ) / s;
+ this.z = ( m21 - m12 ) / s;
+ this.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );
+
+ return this;
+
+ },
+
+ min: function ( v ) {
+
+ this.x = Math.min( this.x, v.x );
+ this.y = Math.min( this.y, v.y );
+ this.z = Math.min( this.z, v.z );
+ this.w = Math.min( this.w, v.w );
+
+ return this;
+
+ },
+
+ max: function ( v ) {
+
+ this.x = Math.max( this.x, v.x );
+ this.y = Math.max( this.y, v.y );
+ this.z = Math.max( this.z, v.z );
+ this.w = Math.max( this.w, v.w );
+
+ return this;
+
+ },
+
+ clamp: function ( min, max ) {
+
+ // assumes min < max, componentwise
+
+ this.x = Math.max( min.x, Math.min( max.x, this.x ) );
+ this.y = Math.max( min.y, Math.min( max.y, this.y ) );
+ this.z = Math.max( min.z, Math.min( max.z, this.z ) );
+ this.w = Math.max( min.w, Math.min( max.w, this.w ) );
+
+ return this;
+
+ },
+
+ clampScalar: function ( minVal, maxVal ) {
+
+ this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
+ this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
+ this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
+ this.w = Math.max( minVal, Math.min( maxVal, this.w ) );
+
+ return this;
+
+ },
+
+ clampLength: function ( min, max ) {
+
+ var length = this.length();
+
+ return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
+
+ },
+
+ floor: function () {
+
+ this.x = Math.floor( this.x );
+ this.y = Math.floor( this.y );
+ this.z = Math.floor( this.z );
+ this.w = Math.floor( this.w );
+
+ return this;
+
+ },
+
+ ceil: function () {
+
+ this.x = Math.ceil( this.x );
+ this.y = Math.ceil( this.y );
+ this.z = Math.ceil( this.z );
+ this.w = Math.ceil( this.w );
+
+ return this;
+
+ },
+
+ round: function () {
+
+ this.x = Math.round( this.x );
+ this.y = Math.round( this.y );
+ this.z = Math.round( this.z );
+ this.w = Math.round( this.w );
+
+ return this;
+
+ },
+
+ roundToZero: function () {
+
+ this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
+ this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
+ this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
+ this.w = ( this.w < 0 ) ? Math.ceil( this.w ) : Math.floor( this.w );
+
+ return this;
+
+ },
+
+ negate: function () {
+
+ this.x = - this.x;
+ this.y = - this.y;
+ this.z = - this.z;
+ this.w = - this.w;
+
+ return this;
+
+ },
+
+ dot: function ( v ) {
+
+ return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;
+
+ },
+
+ lengthSq: function () {
+
+ return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;
+
+ },
+
+ length: function () {
+
+ return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );
+
+ },
+
+ manhattanLength: function () {
+
+ return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );
+
+ },
+
+ normalize: function () {
+
+ return this.divideScalar( this.length() || 1 );
+
+ },
+
+ setLength: function ( length ) {
+
+ return this.normalize().multiplyScalar( length );
+
+ },
+
+ lerp: function ( v, alpha ) {
+
+ this.x += ( v.x - this.x ) * alpha;
+ this.y += ( v.y - this.y ) * alpha;
+ this.z += ( v.z - this.z ) * alpha;
+ this.w += ( v.w - this.w ) * alpha;
+
+ return this;
+
+ },
+
+ lerpVectors: function ( v1, v2, alpha ) {
+
+ return this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 );
+
+ },
+
+ equals: function ( v ) {
+
+ return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );
+
+ },
+
+ fromArray: function ( array, offset ) {
+
+ if ( offset === undefined ) { offset = 0; }
+
+ this.x = array[ offset ];
+ this.y = array[ offset + 1 ];
+ this.z = array[ offset + 2 ];
+ this.w = array[ offset + 3 ];
+
+ return this;
+
+ },
+
+ toArray: function ( array, offset ) {
+
+ if ( array === undefined ) { array = []; }
+ if ( offset === undefined ) { offset = 0; }
+
+ array[ offset ] = this.x;
+ array[ offset + 1 ] = this.y;
+ array[ offset + 2 ] = this.z;
+ array[ offset + 3 ] = this.w;
+
+ return array;
+
+ },
+
+ fromBufferAttribute: function ( attribute, index, offset ) {
+
+ if ( offset !== undefined ) {
+
+ console.warn( 'THREE.Vector4: offset has been removed from .fromBufferAttribute().' );
+
+ }
+
+ this.x = attribute.getX( index );
+ this.y = attribute.getY( index );
+ this.z = attribute.getZ( index );
+ this.w = attribute.getW( index );
+
+ return this;
+
+ }
+
+ } );
+
+ /**
+ * @author szimek / https://github.com/szimek/
+ * @author alteredq / http://alteredqualia.com/
+ * @author Marius Kintel / https://github.com/kintel
+ */
+
+ /*
+ In options, we can specify:
+ * Texture parameters for an auto-generated target texture
+ * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers
+ */
+ function WebGLRenderTarget( width, height, options ) {
+
+ this.width = width;
+ this.height = height;
+
+ this.scissor = new Vector4( 0, 0, width, height );
+ this.scissorTest = false;
+
+ this.viewport = new Vector4( 0, 0, width, height );
+
+ options = options || {};
+
+ this.texture = new Texture( undefined, undefined, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );
+
+ this.texture.image = {};
+ this.texture.image.width = width;
+ this.texture.image.height = height;
+
+ this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
+ this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;
+
+ this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;
+ this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : true;
+ this.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;
+
+ }
+
+ WebGLRenderTarget.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+
+ constructor: WebGLRenderTarget,
+
+ isWebGLRenderTarget: true,
+
+ setSize: function ( width, height ) {
+
+ if ( this.width !== width || this.height !== height ) {
+
+ this.width = width;
+ this.height = height;
+
+ this.texture.image.width = width;
+ this.texture.image.height = height;
+
+ this.dispose();
+
+ }
+
+ this.viewport.set( 0, 0, width, height );
+ this.scissor.set( 0, 0, width, height );
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ },
+
+ copy: function ( source ) {
+
+ this.width = source.width;
+ this.height = source.height;
+
+ this.viewport.copy( source.viewport );
+
+ this.texture = source.texture.clone();
+
+ this.depthBuffer = source.depthBuffer;
+ this.stencilBuffer = source.stencilBuffer;
+ this.depthTexture = source.depthTexture;
+
+ return this;
+
+ },
+
+ dispose: function () {
+
+ this.dispatchEvent( { type: 'dispose' } );
+
+ }
+
+ } );
+
+ /**
+ * @author Mugen87 / https://github.com/Mugen87
+ * @author Matt DesLauriers / @mattdesl
+ */
+
+ function WebGLMultisampleRenderTarget( width, height, options ) {
+
+ WebGLRenderTarget.call( this, width, height, options );
+
+ this.samples = 4;
+
+ }
+
+ WebGLMultisampleRenderTarget.prototype = Object.assign( Object.create( WebGLRenderTarget.prototype ), {
+
+ constructor: WebGLMultisampleRenderTarget,
+
+ isWebGLMultisampleRenderTarget: true,
+
+ copy: function ( source ) {
+
+ WebGLRenderTarget.prototype.copy.call( this, source );
+
+ this.samples = source.samples;
+
+ return this;
+
+ }
+
+ } );
+
+ var _v1 = new Vector3();
+ var _m1 = new Matrix4();
+ var _zero = new Vector3( 0, 0, 0 );
+ var _one = new Vector3( 1, 1, 1 );
+ var _x = new Vector3();
+ var _y = new Vector3();
+ var _z = new Vector3();
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author supereggbert / http://www.paulbrunt.co.uk/
+ * @author philogb / http://blog.thejit.org/
+ * @author jordi_ros / http://plattsoft.com
+ * @author D1plo1d / http://github.com/D1plo1d
+ * @author alteredq / http://alteredqualia.com/
+ * @author mikael emtinger / http://gomo.se/
+ * @author timknip / http://www.floorplanner.com/
+ * @author bhouston / http://clara.io
+ * @author WestLangley / http://github.com/WestLangley
+ */
+
+ function Matrix4() {
+
+ this.elements = [
+
+ 1, 0, 0, 0,
+ 0, 1, 0, 0,
+ 0, 0, 1, 0,
+ 0, 0, 0, 1
+
+ ];
+
+ if ( arguments.length > 0 ) {
+
+ console.error( 'THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.' );
+
+ }
+
+ }
+
+ Object.assign( Matrix4.prototype, {
+
+ isMatrix4: true,
+
+ set: function ( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {
+
+ var te = this.elements;
+
+ te[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;
+ te[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;
+ te[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;
+ te[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;
+
+ return this;
+
+ },
+
+ identity: function () {
+
+ this.set(
+
+ 1, 0, 0, 0,
+ 0, 1, 0, 0,
+ 0, 0, 1, 0,
+ 0, 0, 0, 1
+
+ );
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new Matrix4().fromArray( this.elements );
+
+ },
+
+ copy: function ( m ) {
+
+ var te = this.elements;
+ var me = m.elements;
+
+ te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];
+ te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];
+ te[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];
+ te[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];
+
+ return this;
+
+ },
+
+ copyPosition: function ( m ) {
+
+ var te = this.elements, me = m.elements;
+
+ te[ 12 ] = me[ 12 ];
+ te[ 13 ] = me[ 13 ];
+ te[ 14 ] = me[ 14 ];
+
+ return this;
+
+ },
+
+ extractBasis: function ( xAxis, yAxis, zAxis ) {
+
+ xAxis.setFromMatrixColumn( this, 0 );
+ yAxis.setFromMatrixColumn( this, 1 );
+ zAxis.setFromMatrixColumn( this, 2 );
+
+ return this;
+
+ },
+
+ makeBasis: function ( xAxis, yAxis, zAxis ) {
+
+ this.set(
+ xAxis.x, yAxis.x, zAxis.x, 0,
+ xAxis.y, yAxis.y, zAxis.y, 0,
+ xAxis.z, yAxis.z, zAxis.z, 0,
+ 0, 0, 0, 1
+ );
+
+ return this;
+
+ },
+
+ extractRotation: function ( m ) {
+
+ // this method does not support reflection matrices
+
+ var te = this.elements;
+ var me = m.elements;
+
+ var scaleX = 1 / _v1.setFromMatrixColumn( m, 0 ).length();
+ var scaleY = 1 / _v1.setFromMatrixColumn( m, 1 ).length();
+ var scaleZ = 1 / _v1.setFromMatrixColumn( m, 2 ).length();
+
+ te[ 0 ] = me[ 0 ] * scaleX;
+ te[ 1 ] = me[ 1 ] * scaleX;
+ te[ 2 ] = me[ 2 ] * scaleX;
+ te[ 3 ] = 0;
+
+ te[ 4 ] = me[ 4 ] * scaleY;
+ te[ 5 ] = me[ 5 ] * scaleY;
+ te[ 6 ] = me[ 6 ] * scaleY;
+ te[ 7 ] = 0;
+
+ te[ 8 ] = me[ 8 ] * scaleZ;
+ te[ 9 ] = me[ 9 ] * scaleZ;
+ te[ 10 ] = me[ 10 ] * scaleZ;
+ te[ 11 ] = 0;
+
+ te[ 12 ] = 0;
+ te[ 13 ] = 0;
+ te[ 14 ] = 0;
+ te[ 15 ] = 1;
+
+ return this;
+
+ },
+
+ makeRotationFromEuler: function ( euler ) {
+
+ if ( ! ( euler && euler.isEuler ) ) {
+
+ console.error( 'THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.' );
+
+ }
+
+ var te = this.elements;
+
+ var x = euler.x, y = euler.y, z = euler.z;
+ var a = Math.cos( x ), b = Math.sin( x );
+ var c = Math.cos( y ), d = Math.sin( y );
+ var e = Math.cos( z ), f = Math.sin( z );
+
+ if ( euler.order === 'XYZ' ) {
+
+ var ae = a * e, af = a * f, be = b * e, bf = b * f;
+
+ te[ 0 ] = c * e;
+ te[ 4 ] = - c * f;
+ te[ 8 ] = d;
+
+ te[ 1 ] = af + be * d;
+ te[ 5 ] = ae - bf * d;
+ te[ 9 ] = - b * c;
+
+ te[ 2 ] = bf - ae * d;
+ te[ 6 ] = be + af * d;
+ te[ 10 ] = a * c;
+
+ } else if ( euler.order === 'YXZ' ) {
+
+ var ce = c * e, cf = c * f, de = d * e, df = d * f;
+
+ te[ 0 ] = ce + df * b;
+ te[ 4 ] = de * b - cf;
+ te[ 8 ] = a * d;
+
+ te[ 1 ] = a * f;
+ te[ 5 ] = a * e;
+ te[ 9 ] = - b;
+
+ te[ 2 ] = cf * b - de;
+ te[ 6 ] = df + ce * b;
+ te[ 10 ] = a * c;
+
+ } else if ( euler.order === 'ZXY' ) {
+
+ var ce = c * e, cf = c * f, de = d * e, df = d * f;
+
+ te[ 0 ] = ce - df * b;
+ te[ 4 ] = - a * f;
+ te[ 8 ] = de + cf * b;
+
+ te[ 1 ] = cf + de * b;
+ te[ 5 ] = a * e;
+ te[ 9 ] = df - ce * b;
+
+ te[ 2 ] = - a * d;
+ te[ 6 ] = b;
+ te[ 10 ] = a * c;
+
+ } else if ( euler.order === 'ZYX' ) {
+
+ var ae = a * e, af = a * f, be = b * e, bf = b * f;
+
+ te[ 0 ] = c * e;
+ te[ 4 ] = be * d - af;
+ te[ 8 ] = ae * d + bf;
+
+ te[ 1 ] = c * f;
+ te[ 5 ] = bf * d + ae;
+ te[ 9 ] = af * d - be;
+
+ te[ 2 ] = - d;
+ te[ 6 ] = b * c;
+ te[ 10 ] = a * c;
+
+ } else if ( euler.order === 'YZX' ) {
+
+ var ac = a * c, ad = a * d, bc = b * c, bd = b * d;
+
+ te[ 0 ] = c * e;
+ te[ 4 ] = bd - ac * f;
+ te[ 8 ] = bc * f + ad;
+
+ te[ 1 ] = f;
+ te[ 5 ] = a * e;
+ te[ 9 ] = - b * e;
+
+ te[ 2 ] = - d * e;
+ te[ 6 ] = ad * f + bc;
+ te[ 10 ] = ac - bd * f;
+
+ } else if ( euler.order === 'XZY' ) {
+
+ var ac = a * c, ad = a * d, bc = b * c, bd = b * d;
+
+ te[ 0 ] = c * e;
+ te[ 4 ] = - f;
+ te[ 8 ] = d * e;
+
+ te[ 1 ] = ac * f + bd;
+ te[ 5 ] = a * e;
+ te[ 9 ] = ad * f - bc;
+
+ te[ 2 ] = bc * f - ad;
+ te[ 6 ] = b * e;
+ te[ 10 ] = bd * f + ac;
+
+ }
+
+ // bottom row
+ te[ 3 ] = 0;
+ te[ 7 ] = 0;
+ te[ 11 ] = 0;
+
+ // last column
+ te[ 12 ] = 0;
+ te[ 13 ] = 0;
+ te[ 14 ] = 0;
+ te[ 15 ] = 1;
+
+ return this;
+
+ },
+
+ makeRotationFromQuaternion: function ( q ) {
+
+ return this.compose( _zero, q, _one );
+
+ },
+
+ lookAt: function ( eye, target, up ) {
+
+ var te = this.elements;
+
+ _z.subVectors( eye, target );
+
+ if ( _z.lengthSq() === 0 ) {
+
+ // eye and target are in the same position
+
+ _z.z = 1;
+
+ }
+
+ _z.normalize();
+ _x.crossVectors( up, _z );
+
+ if ( _x.lengthSq() === 0 ) {
+
+ // up and z are parallel
+
+ if ( Math.abs( up.z ) === 1 ) {
+
+ _z.x += 0.0001;
+
+ } else {
+
+ _z.z += 0.0001;
+
+ }
+
+ _z.normalize();
+ _x.crossVectors( up, _z );
+
+ }
+
+ _x.normalize();
+ _y.crossVectors( _z, _x );
+
+ te[ 0 ] = _x.x; te[ 4 ] = _y.x; te[ 8 ] = _z.x;
+ te[ 1 ] = _x.y; te[ 5 ] = _y.y; te[ 9 ] = _z.y;
+ te[ 2 ] = _x.z; te[ 6 ] = _y.z; te[ 10 ] = _z.z;
+
+ return this;
+
+ },
+
+ multiply: function ( m, n ) {
+
+ if ( n !== undefined ) {
+
+ console.warn( 'THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.' );
+ return this.multiplyMatrices( m, n );
+
+ }
+
+ return this.multiplyMatrices( this, m );
+
+ },
+
+ premultiply: function ( m ) {
+
+ return this.multiplyMatrices( m, this );
+
+ },
+
+ multiplyMatrices: function ( a, b ) {
+
+ var ae = a.elements;
+ var be = b.elements;
+ var te = this.elements;
+
+ var a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];
+ var a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];
+ var a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];
+ var a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];
+
+ var b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];
+ var b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];
+ var b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];
+ var b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];
+
+ te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
+ te[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
+ te[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
+ te[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;
+
+ te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
+ te[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
+ te[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
+ te[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;
+
+ te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
+ te[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
+ te[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
+ te[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;
+
+ te[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
+ te[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
+ te[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
+ te[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;
+
+ return this;
+
+ },
+
+ multiplyScalar: function ( s ) {
+
+ var te = this.elements;
+
+ te[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;
+ te[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;
+ te[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;
+ te[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;
+
+ return this;
+
+ },
+
+ applyToBufferAttribute: function ( attribute ) {
+
+ for ( var i = 0, l = attribute.count; i < l; i ++ ) {
+
+ _v1.x = attribute.getX( i );
+ _v1.y = attribute.getY( i );
+ _v1.z = attribute.getZ( i );
+
+ _v1.applyMatrix4( this );
+
+ attribute.setXYZ( i, _v1.x, _v1.y, _v1.z );
+
+ }
+
+ return attribute;
+
+ },
+
+ determinant: function () {
+
+ var te = this.elements;
+
+ var n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];
+ var n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];
+ var n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];
+ var n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];
+
+ //TODO: make this more efficient
+ //( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )
+
+ return (
+ n41 * (
+ + n14 * n23 * n32
+ - n13 * n24 * n32
+ - n14 * n22 * n33
+ + n12 * n24 * n33
+ + n13 * n22 * n34
+ - n12 * n23 * n34
+ ) +
+ n42 * (
+ + n11 * n23 * n34
+ - n11 * n24 * n33
+ + n14 * n21 * n33
+ - n13 * n21 * n34
+ + n13 * n24 * n31
+ - n14 * n23 * n31
+ ) +
+ n43 * (
+ + n11 * n24 * n32
+ - n11 * n22 * n34
+ - n14 * n21 * n32
+ + n12 * n21 * n34
+ + n14 * n22 * n31
+ - n12 * n24 * n31
+ ) +
+ n44 * (
+ - n13 * n22 * n31
+ - n11 * n23 * n32
+ + n11 * n22 * n33
+ + n13 * n21 * n32
+ - n12 * n21 * n33
+ + n12 * n23 * n31
+ )
+
+ );
+
+ },
+
+ transpose: function () {
+
+ var te = this.elements;
+ var tmp;
+
+ tmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;
+ tmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;
+ tmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;
+
+ tmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;
+ tmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;
+ tmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;
+
+ return this;
+
+ },
+
+ setPosition: function ( x, y, z ) {
+
+ var te = this.elements;
+
+ if ( x.isVector3 ) {
+
+ te[ 12 ] = x.x;
+ te[ 13 ] = x.y;
+ te[ 14 ] = x.z;
+
+ } else {
+
+ te[ 12 ] = x;
+ te[ 13 ] = y;
+ te[ 14 ] = z;
+
+ }
+
+ return this;
+
+ },
+
+ getInverse: function ( m, throwOnDegenerate ) {
+
+ // based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm
+ var te = this.elements,
+ me = m.elements,
+
+ n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ], n41 = me[ 3 ],
+ n12 = me[ 4 ], n22 = me[ 5 ], n32 = me[ 6 ], n42 = me[ 7 ],
+ n13 = me[ 8 ], n23 = me[ 9 ], n33 = me[ 10 ], n43 = me[ 11 ],
+ n14 = me[ 12 ], n24 = me[ 13 ], n34 = me[ 14 ], n44 = me[ 15 ],
+
+ t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
+ t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
+ t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
+ t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
+
+ var det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
+
+ if ( det === 0 ) {
+
+ var msg = "THREE.Matrix4: .getInverse() can't invert matrix, determinant is 0";
+
+ if ( throwOnDegenerate === true ) {
+
+ throw new Error( msg );
+
+ } else {
+
+ console.warn( msg );
+
+ }
+
+ return this.identity();
+
+ }
+
+ var detInv = 1 / det;
+
+ te[ 0 ] = t11 * detInv;
+ te[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;
+ te[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;
+ te[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;
+
+ te[ 4 ] = t12 * detInv;
+ te[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;
+ te[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;
+ te[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;
+
+ te[ 8 ] = t13 * detInv;
+ te[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;
+ te[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;
+ te[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;
+
+ te[ 12 ] = t14 * detInv;
+ te[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;
+ te[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;
+ te[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;
+
+ return this;
+
+ },
+
+ scale: function ( v ) {
+
+ var te = this.elements;
+ var x = v.x, y = v.y, z = v.z;
+
+ te[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;
+ te[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;
+ te[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;
+ te[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;
+
+ return this;
+
+ },
+
+ getMaxScaleOnAxis: function () {
+
+ var te = this.elements;
+
+ var scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];
+ var scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];
+ var scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];
+
+ return Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );
+
+ },
+
+ makeTranslation: function ( x, y, z ) {
+
+ this.set(
+
+ 1, 0, 0, x,
+ 0, 1, 0, y,
+ 0, 0, 1, z,
+ 0, 0, 0, 1
+
+ );
+
+ return this;
+
+ },
+
+ makeRotationX: function ( theta ) {
+
+ var c = Math.cos( theta ), s = Math.sin( theta );
+
+ this.set(
+
+ 1, 0, 0, 0,
+ 0, c, - s, 0,
+ 0, s, c, 0,
+ 0, 0, 0, 1
+
+ );
+
+ return this;
+
+ },
+
+ makeRotationY: function ( theta ) {
+
+ var c = Math.cos( theta ), s = Math.sin( theta );
+
+ this.set(
+
+ c, 0, s, 0,
+ 0, 1, 0, 0,
+ - s, 0, c, 0,
+ 0, 0, 0, 1
+
+ );
+
+ return this;
+
+ },
+
+ makeRotationZ: function ( theta ) {
+
+ var c = Math.cos( theta ), s = Math.sin( theta );
+
+ this.set(
+
+ c, - s, 0, 0,
+ s, c, 0, 0,
+ 0, 0, 1, 0,
+ 0, 0, 0, 1
+
+ );
+
+ return this;
+
+ },
+
+ makeRotationAxis: function ( axis, angle ) {
+
+ // Based on http://www.gamedev.net/reference/articles/article1199.asp
+
+ var c = Math.cos( angle );
+ var s = Math.sin( angle );
+ var t = 1 - c;
+ var x = axis.x, y = axis.y, z = axis.z;
+ var tx = t * x, ty = t * y;
+
+ this.set(
+
+ tx * x + c, tx * y - s * z, tx * z + s * y, 0,
+ tx * y + s * z, ty * y + c, ty * z - s * x, 0,
+ tx * z - s * y, ty * z + s * x, t * z * z + c, 0,
+ 0, 0, 0, 1
+
+ );
+
+ return this;
+
+ },
+
+ makeScale: function ( x, y, z ) {
+
+ this.set(
+
+ x, 0, 0, 0,
+ 0, y, 0, 0,
+ 0, 0, z, 0,
+ 0, 0, 0, 1
+
+ );
+
+ return this;
+
+ },
+
+ makeShear: function ( x, y, z ) {
+
+ this.set(
+
+ 1, y, z, 0,
+ x, 1, z, 0,
+ x, y, 1, 0,
+ 0, 0, 0, 1
+
+ );
+
+ return this;
+
+ },
+
+ compose: function ( position, quaternion, scale ) {
+
+ var te = this.elements;
+
+ var x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;
+ var x2 = x + x, y2 = y + y, z2 = z + z;
+ var xx = x * x2, xy = x * y2, xz = x * z2;
+ var yy = y * y2, yz = y * z2, zz = z * z2;
+ var wx = w * x2, wy = w * y2, wz = w * z2;
+
+ var sx = scale.x, sy = scale.y, sz = scale.z;
+
+ te[ 0 ] = ( 1 - ( yy + zz ) ) * sx;
+ te[ 1 ] = ( xy + wz ) * sx;
+ te[ 2 ] = ( xz - wy ) * sx;
+ te[ 3 ] = 0;
+
+ te[ 4 ] = ( xy - wz ) * sy;
+ te[ 5 ] = ( 1 - ( xx + zz ) ) * sy;
+ te[ 6 ] = ( yz + wx ) * sy;
+ te[ 7 ] = 0;
+
+ te[ 8 ] = ( xz + wy ) * sz;
+ te[ 9 ] = ( yz - wx ) * sz;
+ te[ 10 ] = ( 1 - ( xx + yy ) ) * sz;
+ te[ 11 ] = 0;
+
+ te[ 12 ] = position.x;
+ te[ 13 ] = position.y;
+ te[ 14 ] = position.z;
+ te[ 15 ] = 1;
+
+ return this;
+
+ },
+
+ decompose: function ( position, quaternion, scale ) {
+
+ var te = this.elements;
+
+ var sx = _v1.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();
+ var sy = _v1.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();
+ var sz = _v1.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();
+
+ // if determine is negative, we need to invert one scale
+ var det = this.determinant();
+ if ( det < 0 ) { sx = - sx; }
+
+ position.x = te[ 12 ];
+ position.y = te[ 13 ];
+ position.z = te[ 14 ];
+
+ // scale the rotation part
+ _m1.copy( this );
+
+ var invSX = 1 / sx;
+ var invSY = 1 / sy;
+ var invSZ = 1 / sz;
+
+ _m1.elements[ 0 ] *= invSX;
+ _m1.elements[ 1 ] *= invSX;
+ _m1.elements[ 2 ] *= invSX;
+
+ _m1.elements[ 4 ] *= invSY;
+ _m1.elements[ 5 ] *= invSY;
+ _m1.elements[ 6 ] *= invSY;
+
+ _m1.elements[ 8 ] *= invSZ;
+ _m1.elements[ 9 ] *= invSZ;
+ _m1.elements[ 10 ] *= invSZ;
+
+ quaternion.setFromRotationMatrix( _m1 );
+
+ scale.x = sx;
+ scale.y = sy;
+ scale.z = sz;
+
+ return this;
+
+ },
+
+ makePerspective: function ( left, right, top, bottom, near, far ) {
+
+ if ( far === undefined ) {
+
+ console.warn( 'THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.' );
+
+ }
+
+ var te = this.elements;
+ var x = 2 * near / ( right - left );
+ var y = 2 * near / ( top - bottom );
+
+ var a = ( right + left ) / ( right - left );
+ var b = ( top + bottom ) / ( top - bottom );
+ var c = - ( far + near ) / ( far - near );
+ var d = - 2 * far * near / ( far - near );
+
+ te[ 0 ] = x; te[ 4 ] = 0; te[ 8 ] = a; te[ 12 ] = 0;
+ te[ 1 ] = 0; te[ 5 ] = y; te[ 9 ] = b; te[ 13 ] = 0;
+ te[ 2 ] = 0; te[ 6 ] = 0; te[ 10 ] = c; te[ 14 ] = d;
+ te[ 3 ] = 0; te[ 7 ] = 0; te[ 11 ] = - 1; te[ 15 ] = 0;
+
+ return this;
+
+ },
+
+ makeOrthographic: function ( left, right, top, bottom, near, far ) {
+
+ var te = this.elements;
+ var w = 1.0 / ( right - left );
+ var h = 1.0 / ( top - bottom );
+ var p = 1.0 / ( far - near );
+
+ var x = ( right + left ) * w;
+ var y = ( top + bottom ) * h;
+ var z = ( far + near ) * p;
+
+ te[ 0 ] = 2 * w; te[ 4 ] = 0; te[ 8 ] = 0; te[ 12 ] = - x;
+ te[ 1 ] = 0; te[ 5 ] = 2 * h; te[ 9 ] = 0; te[ 13 ] = - y;
+ te[ 2 ] = 0; te[ 6 ] = 0; te[ 10 ] = - 2 * p; te[ 14 ] = - z;
+ te[ 3 ] = 0; te[ 7 ] = 0; te[ 11 ] = 0; te[ 15 ] = 1;
+
+ return this;
+
+ },
+
+ equals: function ( matrix ) {
+
+ var te = this.elements;
+ var me = matrix.elements;
+
+ for ( var i = 0; i < 16; i ++ ) {
+
+ if ( te[ i ] !== me[ i ] ) { return false; }
+
+ }
+
+ return true;
+
+ },
+
+ fromArray: function ( array, offset ) {
+
+ if ( offset === undefined ) { offset = 0; }
+
+ for ( var i = 0; i < 16; i ++ ) {
+
+ this.elements[ i ] = array[ i + offset ];
+
+ }
+
+ return this;
+
+ },
+
+ toArray: function ( array, offset ) {
+
+ if ( array === undefined ) { array = []; }
+ if ( offset === undefined ) { offset = 0; }
+
+ var te = this.elements;
+
+ array[ offset ] = te[ 0 ];
+ array[ offset + 1 ] = te[ 1 ];
+ array[ offset + 2 ] = te[ 2 ];
+ array[ offset + 3 ] = te[ 3 ];
+
+ array[ offset + 4 ] = te[ 4 ];
+ array[ offset + 5 ] = te[ 5 ];
+ array[ offset + 6 ] = te[ 6 ];
+ array[ offset + 7 ] = te[ 7 ];
+
+ array[ offset + 8 ] = te[ 8 ];
+ array[ offset + 9 ] = te[ 9 ];
+ array[ offset + 10 ] = te[ 10 ];
+ array[ offset + 11 ] = te[ 11 ];
+
+ array[ offset + 12 ] = te[ 12 ];
+ array[ offset + 13 ] = te[ 13 ];
+ array[ offset + 14 ] = te[ 14 ];
+ array[ offset + 15 ] = te[ 15 ];
+
+ return array;
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author WestLangley / http://github.com/WestLangley
+ * @author bhouston / http://clara.io
+ */
+
+ var _matrix = new Matrix4();
+ var _quaternion$1 = new Quaternion();
+
+ function Euler( x, y, z, order ) {
+
+ this._x = x || 0;
+ this._y = y || 0;
+ this._z = z || 0;
+ this._order = order || Euler.DefaultOrder;
+
+ }
+
+ Euler.RotationOrders = [ 'XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX' ];
+
+ Euler.DefaultOrder = 'XYZ';
+
+ Object.defineProperties( Euler.prototype, {
+
+ x: {
+
+ get: function () {
+
+ return this._x;
+
+ },
+
+ set: function ( value ) {
+
+ this._x = value;
+ this._onChangeCallback();
+
+ }
+
+ },
+
+ y: {
+
+ get: function () {
+
+ return this._y;
+
+ },
+
+ set: function ( value ) {
+
+ this._y = value;
+ this._onChangeCallback();
+
+ }
+
+ },
+
+ z: {
+
+ get: function () {
+
+ return this._z;
+
+ },
+
+ set: function ( value ) {
+
+ this._z = value;
+ this._onChangeCallback();
+
+ }
+
+ },
+
+ order: {
+
+ get: function () {
+
+ return this._order;
+
+ },
+
+ set: function ( value ) {
+
+ this._order = value;
+ this._onChangeCallback();
+
+ }
+
+ }
+
+ } );
+
+ Object.assign( Euler.prototype, {
+
+ isEuler: true,
+
+ set: function ( x, y, z, order ) {
+
+ this._x = x;
+ this._y = y;
+ this._z = z;
+ this._order = order || this._order;
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor( this._x, this._y, this._z, this._order );
+
+ },
+
+ copy: function ( euler ) {
+
+ this._x = euler._x;
+ this._y = euler._y;
+ this._z = euler._z;
+ this._order = euler._order;
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ setFromRotationMatrix: function ( m, order, update ) {
+
+ var clamp = _Math.clamp;
+
+ // assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+
+ var te = m.elements;
+ var m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];
+ var m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];
+ var m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
+
+ order = order || this._order;
+
+ if ( order === 'XYZ' ) {
+
+ this._y = Math.asin( clamp( m13, - 1, 1 ) );
+
+ if ( Math.abs( m13 ) < 0.9999999 ) {
+
+ this._x = Math.atan2( - m23, m33 );
+ this._z = Math.atan2( - m12, m11 );
+
+ } else {
+
+ this._x = Math.atan2( m32, m22 );
+ this._z = 0;
+
+ }
+
+ } else if ( order === 'YXZ' ) {
+
+ this._x = Math.asin( - clamp( m23, - 1, 1 ) );
+
+ if ( Math.abs( m23 ) < 0.9999999 ) {
+
+ this._y = Math.atan2( m13, m33 );
+ this._z = Math.atan2( m21, m22 );
+
+ } else {
+
+ this._y = Math.atan2( - m31, m11 );
+ this._z = 0;
+
+ }
+
+ } else if ( order === 'ZXY' ) {
+
+ this._x = Math.asin( clamp( m32, - 1, 1 ) );
+
+ if ( Math.abs( m32 ) < 0.9999999 ) {
+
+ this._y = Math.atan2( - m31, m33 );
+ this._z = Math.atan2( - m12, m22 );
+
+ } else {
+
+ this._y = 0;
+ this._z = Math.atan2( m21, m11 );
+
+ }
+
+ } else if ( order === 'ZYX' ) {
+
+ this._y = Math.asin( - clamp( m31, - 1, 1 ) );
+
+ if ( Math.abs( m31 ) < 0.9999999 ) {
+
+ this._x = Math.atan2( m32, m33 );
+ this._z = Math.atan2( m21, m11 );
+
+ } else {
+
+ this._x = 0;
+ this._z = Math.atan2( - m12, m22 );
+
+ }
+
+ } else if ( order === 'YZX' ) {
+
+ this._z = Math.asin( clamp( m21, - 1, 1 ) );
+
+ if ( Math.abs( m21 ) < 0.9999999 ) {
+
+ this._x = Math.atan2( - m23, m22 );
+ this._y = Math.atan2( - m31, m11 );
+
+ } else {
+
+ this._x = 0;
+ this._y = Math.atan2( m13, m33 );
+
+ }
+
+ } else if ( order === 'XZY' ) {
+
+ this._z = Math.asin( - clamp( m12, - 1, 1 ) );
+
+ if ( Math.abs( m12 ) < 0.9999999 ) {
+
+ this._x = Math.atan2( m32, m22 );
+ this._y = Math.atan2( m13, m11 );
+
+ } else {
+
+ this._x = Math.atan2( - m23, m33 );
+ this._y = 0;
+
+ }
+
+ } else {
+
+ console.warn( 'THREE.Euler: .setFromRotationMatrix() given unsupported order: ' + order );
+
+ }
+
+ this._order = order;
+
+ if ( update !== false ) { this._onChangeCallback(); }
+
+ return this;
+
+ },
+
+ setFromQuaternion: function ( q, order, update ) {
+
+ _matrix.makeRotationFromQuaternion( q );
+
+ return this.setFromRotationMatrix( _matrix, order, update );
+
+ },
+
+ setFromVector3: function ( v, order ) {
+
+ return this.set( v.x, v.y, v.z, order || this._order );
+
+ },
+
+ reorder: function ( newOrder ) {
+
+ // WARNING: this discards revolution information -bhouston
+
+ _quaternion$1.setFromEuler( this );
+
+ return this.setFromQuaternion( _quaternion$1, newOrder );
+
+ },
+
+ equals: function ( euler ) {
+
+ return ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );
+
+ },
+
+ fromArray: function ( array ) {
+
+ this._x = array[ 0 ];
+ this._y = array[ 1 ];
+ this._z = array[ 2 ];
+ if ( array[ 3 ] !== undefined ) { this._order = array[ 3 ]; }
+
+ this._onChangeCallback();
+
+ return this;
+
+ },
+
+ toArray: function ( array, offset ) {
+
+ if ( array === undefined ) { array = []; }
+ if ( offset === undefined ) { offset = 0; }
+
+ array[ offset ] = this._x;
+ array[ offset + 1 ] = this._y;
+ array[ offset + 2 ] = this._z;
+ array[ offset + 3 ] = this._order;
+
+ return array;
+
+ },
+
+ toVector3: function ( optionalResult ) {
+
+ if ( optionalResult ) {
+
+ return optionalResult.set( this._x, this._y, this._z );
+
+ } else {
+
+ return new Vector3( this._x, this._y, this._z );
+
+ }
+
+ },
+
+ _onChange: function ( callback ) {
+
+ this._onChangeCallback = callback;
+
+ return this;
+
+ },
+
+ _onChangeCallback: function () {}
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+ function Layers() {
+
+ this.mask = 1 | 0;
+
+ }
+
+ Object.assign( Layers.prototype, {
+
+ set: function ( channel ) {
+
+ this.mask = 1 << channel | 0;
+
+ },
+
+ enable: function ( channel ) {
+
+ this.mask |= 1 << channel | 0;
+
+ },
+
+ enableAll: function () {
+
+ this.mask = 0xffffffff | 0;
+
+ },
+
+ toggle: function ( channel ) {
+
+ this.mask ^= 1 << channel | 0;
+
+ },
+
+ disable: function ( channel ) {
+
+ this.mask &= ~ ( 1 << channel | 0 );
+
+ },
+
+ disableAll: function () {
+
+ this.mask = 0;
+
+ },
+
+ test: function ( layers ) {
+
+ return ( this.mask & layers.mask ) !== 0;
+
+ }
+
+ } );
+
+ var _object3DId = 0;
+
+ var _v1$1 = new Vector3();
+ var _q1 = new Quaternion();
+ var _m1$1 = new Matrix4();
+ var _target = new Vector3();
+
+ var _position = new Vector3();
+ var _scale = new Vector3();
+ var _quaternion$2 = new Quaternion();
+
+ var _xAxis = new Vector3( 1, 0, 0 );
+ var _yAxis = new Vector3( 0, 1, 0 );
+ var _zAxis = new Vector3( 0, 0, 1 );
+
+ var _addedEvent = { type: 'added' };
+ var _removedEvent = { type: 'removed' };
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author mikael emtinger / http://gomo.se/
+ * @author alteredq / http://alteredqualia.com/
+ * @author WestLangley / http://github.com/WestLangley
+ * @author elephantatwork / www.elephantatwork.ch
+ */
+
+ function Object3D() {
+
+ Object.defineProperty( this, 'id', { value: _object3DId ++ } );
+
+ this.uuid = _Math.generateUUID();
+
+ this.name = '';
+ this.type = 'Object3D';
+
+ this.parent = null;
+ this.children = [];
+
+ this.up = Object3D.DefaultUp.clone();
+
+ var position = new Vector3();
+ var rotation = new Euler();
+ var quaternion = new Quaternion();
+ var scale = new Vector3( 1, 1, 1 );
+
+ function onRotationChange() {
+
+ quaternion.setFromEuler( rotation, false );
+
+ }
+
+ function onQuaternionChange() {
+
+ rotation.setFromQuaternion( quaternion, undefined, false );
+
+ }
+
+ rotation._onChange( onRotationChange );
+ quaternion._onChange( onQuaternionChange );
+
+ Object.defineProperties( this, {
+ position: {
+ configurable: true,
+ enumerable: true,
+ value: position
+ },
+ rotation: {
+ configurable: true,
+ enumerable: true,
+ value: rotation
+ },
+ quaternion: {
+ configurable: true,
+ enumerable: true,
+ value: quaternion
+ },
+ scale: {
+ configurable: true,
+ enumerable: true,
+ value: scale
+ },
+ modelViewMatrix: {
+ value: new Matrix4()
+ },
+ normalMatrix: {
+ value: new Matrix3()
+ }
+ } );
+
+ this.matrix = new Matrix4();
+ this.matrixWorld = new Matrix4();
+
+ this.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;
+ this.matrixWorldNeedsUpdate = false;
+
+ this.layers = new Layers();
+ this.visible = true;
+
+ this.castShadow = false;
+ this.receiveShadow = false;
+
+ this.frustumCulled = true;
+ this.renderOrder = 0;
+
+ this.userData = {};
+
+ }
+
+ Object3D.DefaultUp = new Vector3( 0, 1, 0 );
+ Object3D.DefaultMatrixAutoUpdate = true;
+
+ Object3D.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+
+ constructor: Object3D,
+
+ isObject3D: true,
+
+ onBeforeRender: function () {},
+ onAfterRender: function () {},
+
+ applyMatrix: function ( matrix ) {
+
+ if ( this.matrixAutoUpdate ) { this.updateMatrix(); }
+
+ this.matrix.premultiply( matrix );
+
+ this.matrix.decompose( this.position, this.quaternion, this.scale );
+
+ },
+
+ applyQuaternion: function ( q ) {
+
+ this.quaternion.premultiply( q );
+
+ return this;
+
+ },
+
+ setRotationFromAxisAngle: function ( axis, angle ) {
+
+ // assumes axis is normalized
+
+ this.quaternion.setFromAxisAngle( axis, angle );
+
+ },
+
+ setRotationFromEuler: function ( euler ) {
+
+ this.quaternion.setFromEuler( euler, true );
+
+ },
+
+ setRotationFromMatrix: function ( m ) {
+
+ // assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+
+ this.quaternion.setFromRotationMatrix( m );
+
+ },
+
+ setRotationFromQuaternion: function ( q ) {
+
+ // assumes q is normalized
+
+ this.quaternion.copy( q );
+
+ },
+
+ rotateOnAxis: function ( axis, angle ) {
+
+ // rotate object on axis in object space
+ // axis is assumed to be normalized
+
+ _q1.setFromAxisAngle( axis, angle );
+
+ this.quaternion.multiply( _q1 );
+
+ return this;
+
+ },
+
+ rotateOnWorldAxis: function ( axis, angle ) {
+
+ // rotate object on axis in world space
+ // axis is assumed to be normalized
+ // method assumes no rotated parent
+
+ _q1.setFromAxisAngle( axis, angle );
+
+ this.quaternion.premultiply( _q1 );
+
+ return this;
+
+ },
+
+ rotateX: function ( angle ) {
+
+ return this.rotateOnAxis( _xAxis, angle );
+
+ },
+
+ rotateY: function ( angle ) {
+
+ return this.rotateOnAxis( _yAxis, angle );
+
+ },
+
+ rotateZ: function ( angle ) {
+
+ return this.rotateOnAxis( _zAxis, angle );
+
+ },
+
+ translateOnAxis: function ( axis, distance ) {
+
+ // translate object by distance along axis in object space
+ // axis is assumed to be normalized
+
+ _v1$1.copy( axis ).applyQuaternion( this.quaternion );
+
+ this.position.add( _v1$1.multiplyScalar( distance ) );
+
+ return this;
+
+ },
+
+ translateX: function ( distance ) {
+
+ return this.translateOnAxis( _xAxis, distance );
+
+ },
+
+ translateY: function ( distance ) {
+
+ return this.translateOnAxis( _yAxis, distance );
+
+ },
+
+ translateZ: function ( distance ) {
+
+ return this.translateOnAxis( _zAxis, distance );
+
+ },
+
+ localToWorld: function ( vector ) {
+
+ return vector.applyMatrix4( this.matrixWorld );
+
+ },
+
+ worldToLocal: function ( vector ) {
+
+ return vector.applyMatrix4( _m1$1.getInverse( this.matrixWorld ) );
+
+ },
+
+ lookAt: function ( x, y, z ) {
+
+ // This method does not support objects having non-uniformly-scaled parent(s)
+
+ if ( x.isVector3 ) {
+
+ _target.copy( x );
+
+ } else {
+
+ _target.set( x, y, z );
+
+ }
+
+ var parent = this.parent;
+
+ this.updateWorldMatrix( true, false );
+
+ _position.setFromMatrixPosition( this.matrixWorld );
+
+ if ( this.isCamera || this.isLight ) {
+
+ _m1$1.lookAt( _position, _target, this.up );
+
+ } else {
+
+ _m1$1.lookAt( _target, _position, this.up );
+
+ }
+
+ this.quaternion.setFromRotationMatrix( _m1$1 );
+
+ if ( parent ) {
+
+ _m1$1.extractRotation( parent.matrixWorld );
+ _q1.setFromRotationMatrix( _m1$1 );
+ this.quaternion.premultiply( _q1.inverse() );
+
+ }
+
+ },
+
+ add: function ( object ) {
+
+ if ( arguments.length > 1 ) {
+
+ for ( var i = 0; i < arguments.length; i ++ ) {
+
+ this.add( arguments[ i ] );
+
+ }
+
+ return this;
+
+ }
+
+ if ( object === this ) {
+
+ console.error( "THREE.Object3D.add: object can't be added as a child of itself.", object );
+ return this;
+
+ }
+
+ if ( ( object && object.isObject3D ) ) {
+
+ if ( object.parent !== null ) {
+
+ object.parent.remove( object );
+
+ }
+
+ object.parent = this;
+ this.children.push( object );
+
+ object.dispatchEvent( _addedEvent );
+
+ } else {
+
+ console.error( "THREE.Object3D.add: object not an instance of THREE.Object3D.", object );
+
+ }
+
+ return this;
+
+ },
+
+ remove: function ( object ) {
+
+ if ( arguments.length > 1 ) {
+
+ for ( var i = 0; i < arguments.length; i ++ ) {
+
+ this.remove( arguments[ i ] );
+
+ }
+
+ return this;
+
+ }
+
+ var index = this.children.indexOf( object );
+
+ if ( index !== - 1 ) {
+
+ object.parent = null;
+ this.children.splice( index, 1 );
+
+ object.dispatchEvent( _removedEvent );
+
+ }
+
+ return this;
+
+ },
+
+ attach: function ( object ) {
+
+ // adds object as a child of this, while maintaining the object's world transform
+
+ this.updateWorldMatrix( true, false );
+
+ _m1$1.getInverse( this.matrixWorld );
+
+ if ( object.parent !== null ) {
+
+ object.parent.updateWorldMatrix( true, false );
+
+ _m1$1.multiply( object.parent.matrixWorld );
+
+ }
+
+ object.applyMatrix( _m1$1 );
+
+ object.updateWorldMatrix( false, false );
+
+ this.add( object );
+
+ return this;
+
+ },
+
+ getObjectById: function ( id ) {
+
+ return this.getObjectByProperty( 'id', id );
+
+ },
+
+ getObjectByName: function ( name ) {
+
+ return this.getObjectByProperty( 'name', name );
+
+ },
+
+ getObjectByProperty: function ( name, value ) {
+
+ if ( this[ name ] === value ) { return this; }
+
+ for ( var i = 0, l = this.children.length; i < l; i ++ ) {
+
+ var child = this.children[ i ];
+ var object = child.getObjectByProperty( name, value );
+
+ if ( object !== undefined ) {
+
+ return object;
+
+ }
+
+ }
+
+ return undefined;
+
+ },
+
+ getWorldPosition: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Object3D: .getWorldPosition() target is now required' );
+ target = new Vector3();
+
+ }
+
+ this.updateMatrixWorld( true );
+
+ return target.setFromMatrixPosition( this.matrixWorld );
+
+ },
+
+ getWorldQuaternion: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Object3D: .getWorldQuaternion() target is now required' );
+ target = new Quaternion();
+
+ }
+
+ this.updateMatrixWorld( true );
+
+ this.matrixWorld.decompose( _position, target, _scale );
+
+ return target;
+
+ },
+
+ getWorldScale: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Object3D: .getWorldScale() target is now required' );
+ target = new Vector3();
+
+ }
+
+ this.updateMatrixWorld( true );
+
+ this.matrixWorld.decompose( _position, _quaternion$2, target );
+
+ return target;
+
+ },
+
+ getWorldDirection: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Object3D: .getWorldDirection() target is now required' );
+ target = new Vector3();
+
+ }
+
+ this.updateMatrixWorld( true );
+
+ var e = this.matrixWorld.elements;
+
+ return target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();
+
+ },
+
+ raycast: function () {},
+
+ traverse: function ( callback ) {
+
+ callback( this );
+
+ var children = this.children;
+
+ for ( var i = 0, l = children.length; i < l; i ++ ) {
+
+ children[ i ].traverse( callback );
+
+ }
+
+ },
+
+ traverseVisible: function ( callback ) {
+
+ if ( this.visible === false ) { return; }
+
+ callback( this );
+
+ var children = this.children;
+
+ for ( var i = 0, l = children.length; i < l; i ++ ) {
+
+ children[ i ].traverseVisible( callback );
+
+ }
+
+ },
+
+ traverseAncestors: function ( callback ) {
+
+ var parent = this.parent;
+
+ if ( parent !== null ) {
+
+ callback( parent );
+
+ parent.traverseAncestors( callback );
+
+ }
+
+ },
+
+ updateMatrix: function () {
+
+ this.matrix.compose( this.position, this.quaternion, this.scale );
+
+ this.matrixWorldNeedsUpdate = true;
+
+ },
+
+ updateMatrixWorld: function ( force ) {
+
+ if ( this.matrixAutoUpdate ) { this.updateMatrix(); }
+
+ if ( this.matrixWorldNeedsUpdate || force ) {
+
+ if ( this.parent === null ) {
+
+ this.matrixWorld.copy( this.matrix );
+
+ } else {
+
+ this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
+
+ }
+
+ this.matrixWorldNeedsUpdate = false;
+
+ force = true;
+
+ }
+
+ // update children
+
+ var children = this.children;
+
+ for ( var i = 0, l = children.length; i < l; i ++ ) {
+
+ children[ i ].updateMatrixWorld( force );
+
+ }
+
+ },
+
+ updateWorldMatrix: function ( updateParents, updateChildren ) {
+
+ var parent = this.parent;
+
+ if ( updateParents === true && parent !== null ) {
+
+ parent.updateWorldMatrix( true, false );
+
+ }
+
+ if ( this.matrixAutoUpdate ) { this.updateMatrix(); }
+
+ if ( this.parent === null ) {
+
+ this.matrixWorld.copy( this.matrix );
+
+ } else {
+
+ this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
+
+ }
+
+ // update children
+
+ if ( updateChildren === true ) {
+
+ var children = this.children;
+
+ for ( var i = 0, l = children.length; i < l; i ++ ) {
+
+ children[ i ].updateWorldMatrix( false, true );
+
+ }
+
+ }
+
+ },
+
+ toJSON: function ( meta ) {
+
+ // meta is a string when called from JSON.stringify
+ var isRootObject = ( meta === undefined || typeof meta === 'string' );
+
+ var output = {};
+
+ // meta is a hash used to collect geometries, materials.
+ // not providing it implies that this is the root object
+ // being serialized.
+ if ( isRootObject ) {
+
+ // initialize meta obj
+ meta = {
+ geometries: {},
+ materials: {},
+ textures: {},
+ images: {},
+ shapes: {}
+ };
+
+ output.metadata = {
+ version: 4.5,
+ type: 'Object',
+ generator: 'Object3D.toJSON'
+ };
+
+ }
+
+ // standard Object3D serialization
+
+ var object = {};
+
+ object.uuid = this.uuid;
+ object.type = this.type;
+
+ if ( this.name !== '' ) { object.name = this.name; }
+ if ( this.castShadow === true ) { object.castShadow = true; }
+ if ( this.receiveShadow === true ) { object.receiveShadow = true; }
+ if ( this.visible === false ) { object.visible = false; }
+ if ( this.frustumCulled === false ) { object.frustumCulled = false; }
+ if ( this.renderOrder !== 0 ) { object.renderOrder = this.renderOrder; }
+ if ( JSON.stringify( this.userData ) !== '{}' ) { object.userData = this.userData; }
+
+ object.layers = this.layers.mask;
+ object.matrix = this.matrix.toArray();
+
+ if ( this.matrixAutoUpdate === false ) { object.matrixAutoUpdate = false; }
+
+ // object specific properties
+
+ if ( this.isMesh && this.drawMode !== TrianglesDrawMode ) { object.drawMode = this.drawMode; }
+
+ //
+
+ function serialize( library, element ) {
+
+ if ( library[ element.uuid ] === undefined ) {
+
+ library[ element.uuid ] = element.toJSON( meta );
+
+ }
+
+ return element.uuid;
+
+ }
+
+ if ( this.isMesh || this.isLine || this.isPoints ) {
+
+ object.geometry = serialize( meta.geometries, this.geometry );
+
+ var parameters = this.geometry.parameters;
+
+ if ( parameters !== undefined && parameters.shapes !== undefined ) {
+
+ var shapes = parameters.shapes;
+
+ if ( Array.isArray( shapes ) ) {
+
+ for ( var i = 0, l = shapes.length; i < l; i ++ ) {
+
+ var shape = shapes[ i ];
+
+ serialize( meta.shapes, shape );
+
+ }
+
+ } else {
+
+ serialize( meta.shapes, shapes );
+
+ }
+
+ }
+
+ }
+
+ if ( this.material !== undefined ) {
+
+ if ( Array.isArray( this.material ) ) {
+
+ var uuids = [];
+
+ for ( var i = 0, l = this.material.length; i < l; i ++ ) {
+
+ uuids.push( serialize( meta.materials, this.material[ i ] ) );
+
+ }
+
+ object.material = uuids;
+
+ } else {
+
+ object.material = serialize( meta.materials, this.material );
+
+ }
+
+ }
+
+ //
+
+ if ( this.children.length > 0 ) {
+
+ object.children = [];
+
+ for ( var i = 0; i < this.children.length; i ++ ) {
+
+ object.children.push( this.children[ i ].toJSON( meta ).object );
+
+ }
+
+ }
+
+ if ( isRootObject ) {
+
+ var geometries = extractFromCache( meta.geometries );
+ var materials = extractFromCache( meta.materials );
+ var textures = extractFromCache( meta.textures );
+ var images = extractFromCache( meta.images );
+ var shapes = extractFromCache( meta.shapes );
+
+ if ( geometries.length > 0 ) { output.geometries = geometries; }
+ if ( materials.length > 0 ) { output.materials = materials; }
+ if ( textures.length > 0 ) { output.textures = textures; }
+ if ( images.length > 0 ) { output.images = images; }
+ if ( shapes.length > 0 ) { output.shapes = shapes; }
+
+ }
+
+ output.object = object;
+
+ return output;
+
+ // extract data from the cache hash
+ // remove metadata on each item
+ // and return as array
+ function extractFromCache( cache ) {
+
+ var values = [];
+ for ( var key in cache ) {
+
+ var data = cache[ key ];
+ delete data.metadata;
+ values.push( data );
+
+ }
+ return values;
+
+ }
+
+ },
+
+ clone: function ( recursive ) {
+
+ return new this.constructor().copy( this, recursive );
+
+ },
+
+ copy: function ( source, recursive ) {
+
+ if ( recursive === undefined ) { recursive = true; }
+
+ this.name = source.name;
+
+ this.up.copy( source.up );
+
+ this.position.copy( source.position );
+ this.quaternion.copy( source.quaternion );
+ this.scale.copy( source.scale );
+
+ this.matrix.copy( source.matrix );
+ this.matrixWorld.copy( source.matrixWorld );
+
+ this.matrixAutoUpdate = source.matrixAutoUpdate;
+ this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
+
+ this.layers.mask = source.layers.mask;
+ this.visible = source.visible;
+
+ this.castShadow = source.castShadow;
+ this.receiveShadow = source.receiveShadow;
+
+ this.frustumCulled = source.frustumCulled;
+ this.renderOrder = source.renderOrder;
+
+ this.userData = JSON.parse( JSON.stringify( source.userData ) );
+
+ if ( recursive === true ) {
+
+ for ( var i = 0; i < source.children.length; i ++ ) {
+
+ var child = source.children[ i ];
+ this.add( child.clone() );
+
+ }
+
+ }
+
+ return this;
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+ function Scene() {
+
+ Object3D.call( this );
+
+ this.type = 'Scene';
+
+ this.background = null;
+ this.fog = null;
+ this.overrideMaterial = null;
+
+ this.autoUpdate = true; // checked by the renderer
+
+ if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
+
+ __THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) ); // eslint-disable-line no-undef
+
+ }
+
+ }
+
+ Scene.prototype = Object.assign( Object.create( Object3D.prototype ), {
+
+ constructor: Scene,
+
+ isScene: true,
+
+ copy: function ( source, recursive ) {
+
+ Object3D.prototype.copy.call( this, source, recursive );
+
+ if ( source.background !== null ) { this.background = source.background.clone(); }
+ if ( source.fog !== null ) { this.fog = source.fog.clone(); }
+ if ( source.overrideMaterial !== null ) { this.overrideMaterial = source.overrideMaterial.clone(); }
+
+ this.autoUpdate = source.autoUpdate;
+ this.matrixAutoUpdate = source.matrixAutoUpdate;
+
+ return this;
+
+ },
+
+ toJSON: function ( meta ) {
+
+ var data = Object3D.prototype.toJSON.call( this, meta );
+
+ if ( this.background !== null ) { data.object.background = this.background.toJSON( meta ); }
+ if ( this.fog !== null ) { data.object.fog = this.fog.toJSON(); }
+
+ return data;
+
+ },
+
+ dispose: function () {
+
+ this.dispatchEvent( { type: 'dispose' } );
+
+ }
+
+ } );
+
+ var _points = [
+ new Vector3(),
+ new Vector3(),
+ new Vector3(),
+ new Vector3(),
+ new Vector3(),
+ new Vector3(),
+ new Vector3(),
+ new Vector3()
+ ];
+ var _vector$2 = new Vector3();
+
+ // triangle centered vertices
+
+ var _v0 = new Vector3();
+ var _v1$2 = new Vector3();
+ var _v2 = new Vector3();
+
+ // triangle edge vectors
+
+ var _f0 = new Vector3();
+ var _f1 = new Vector3();
+ var _f2 = new Vector3();
+
+ var _center = new Vector3();
+ var _extents = new Vector3();
+ var _triangleNormal = new Vector3();
+ var _testAxis = new Vector3();
+
+ /**
+ * @author bhouston / http://clara.io
+ * @author WestLangley / http://github.com/WestLangley
+ */
+
+ function Box3( min, max ) {
+
+ this.min = ( min !== undefined ) ? min : new Vector3( + Infinity, + Infinity, + Infinity );
+ this.max = ( max !== undefined ) ? max : new Vector3( - Infinity, - Infinity, - Infinity );
+
+ }
+
+ Object.assign( Box3.prototype, {
+
+ isBox3: true,
+
+ set: function ( min, max ) {
+
+ this.min.copy( min );
+ this.max.copy( max );
+
+ return this;
+
+ },
+
+ setFromArray: function ( array ) {
+
+ var minX = + Infinity;
+ var minY = + Infinity;
+ var minZ = + Infinity;
+
+ var maxX = - Infinity;
+ var maxY = - Infinity;
+ var maxZ = - Infinity;
+
+ for ( var i = 0, l = array.length; i < l; i += 3 ) {
+
+ var x = array[ i ];
+ var y = array[ i + 1 ];
+ var z = array[ i + 2 ];
+
+ if ( x < minX ) { minX = x; }
+ if ( y < minY ) { minY = y; }
+ if ( z < minZ ) { minZ = z; }
+
+ if ( x > maxX ) { maxX = x; }
+ if ( y > maxY ) { maxY = y; }
+ if ( z > maxZ ) { maxZ = z; }
+
+ }
+
+ this.min.set( minX, minY, minZ );
+ this.max.set( maxX, maxY, maxZ );
+
+ return this;
+
+ },
+
+ setFromBufferAttribute: function ( attribute ) {
+
+ var minX = + Infinity;
+ var minY = + Infinity;
+ var minZ = + Infinity;
+
+ var maxX = - Infinity;
+ var maxY = - Infinity;
+ var maxZ = - Infinity;
+
+ for ( var i = 0, l = attribute.count; i < l; i ++ ) {
+
+ var x = attribute.getX( i );
+ var y = attribute.getY( i );
+ var z = attribute.getZ( i );
+
+ if ( x < minX ) { minX = x; }
+ if ( y < minY ) { minY = y; }
+ if ( z < minZ ) { minZ = z; }
+
+ if ( x > maxX ) { maxX = x; }
+ if ( y > maxY ) { maxY = y; }
+ if ( z > maxZ ) { maxZ = z; }
+
+ }
+
+ this.min.set( minX, minY, minZ );
+ this.max.set( maxX, maxY, maxZ );
+
+ return this;
+
+ },
+
+ setFromPoints: function ( points ) {
+
+ this.makeEmpty();
+
+ for ( var i = 0, il = points.length; i < il; i ++ ) {
+
+ this.expandByPoint( points[ i ] );
+
+ }
+
+ return this;
+
+ },
+
+ setFromCenterAndSize: function ( center, size ) {
+
+ var halfSize = _vector$2.copy( size ).multiplyScalar( 0.5 );
+
+ this.min.copy( center ).sub( halfSize );
+ this.max.copy( center ).add( halfSize );
+
+ return this;
+
+ },
+
+ setFromObject: function ( object ) {
+
+ this.makeEmpty();
+
+ return this.expandByObject( object );
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ },
+
+ copy: function ( box ) {
+
+ this.min.copy( box.min );
+ this.max.copy( box.max );
+
+ return this;
+
+ },
+
+ makeEmpty: function () {
+
+ this.min.x = this.min.y = this.min.z = + Infinity;
+ this.max.x = this.max.y = this.max.z = - Infinity;
+
+ return this;
+
+ },
+
+ isEmpty: function () {
+
+ // this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
+
+ return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );
+
+ },
+
+ getCenter: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Box3: .getCenter() target is now required' );
+ target = new Vector3();
+
+ }
+
+ return this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );
+
+ },
+
+ getSize: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Box3: .getSize() target is now required' );
+ target = new Vector3();
+
+ }
+
+ return this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );
+
+ },
+
+ expandByPoint: function ( point ) {
+
+ this.min.min( point );
+ this.max.max( point );
+
+ return this;
+
+ },
+
+ expandByVector: function ( vector ) {
+
+ this.min.sub( vector );
+ this.max.add( vector );
+
+ return this;
+
+ },
+
+ expandByScalar: function ( scalar ) {
+
+ this.min.addScalar( - scalar );
+ this.max.addScalar( scalar );
+
+ return this;
+
+ },
+
+ expandByObject: function ( object ) {
+
+ var i, l;
+
+ // Computes the world-axis-aligned bounding box of an object (including its children),
+ // accounting for both the object's, and children's, world transforms
+
+ object.updateWorldMatrix( false, false );
+
+ var geometry = object.geometry;
+
+ if ( geometry !== undefined ) {
+
+ if ( geometry.isGeometry ) {
+
+ var vertices = geometry.vertices;
+
+ for ( i = 0, l = vertices.length; i < l; i ++ ) {
+
+ _vector$2.copy( vertices[ i ] );
+ _vector$2.applyMatrix4( object.matrixWorld );
+
+ this.expandByPoint( _vector$2 );
+
+ }
+
+ } else if ( geometry.isBufferGeometry ) {
+
+ var attribute = geometry.attributes.position;
+
+ if ( attribute !== undefined ) {
+
+ for ( i = 0, l = attribute.count; i < l; i ++ ) {
+
+ _vector$2.fromBufferAttribute( attribute, i ).applyMatrix4( object.matrixWorld );
+
+ this.expandByPoint( _vector$2 );
+
+ }
+
+ }
+
+ }
+
+ }
+
+ //
+
+ var children = object.children;
+
+ for ( i = 0, l = children.length; i < l; i ++ ) {
+
+ this.expandByObject( children[ i ] );
+
+ }
+
+ return this;
+
+ },
+
+ containsPoint: function ( point ) {
+
+ return point.x < this.min.x || point.x > this.max.x ||
+ point.y < this.min.y || point.y > this.max.y ||
+ point.z < this.min.z || point.z > this.max.z ? false : true;
+
+ },
+
+ containsBox: function ( box ) {
+
+ return this.min.x <= box.min.x && box.max.x <= this.max.x &&
+ this.min.y <= box.min.y && box.max.y <= this.max.y &&
+ this.min.z <= box.min.z && box.max.z <= this.max.z;
+
+ },
+
+ getParameter: function ( point, target ) {
+
+ // This can potentially have a divide by zero if the box
+ // has a size dimension of 0.
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Box3: .getParameter() target is now required' );
+ target = new Vector3();
+
+ }
+
+ return target.set(
+ ( point.x - this.min.x ) / ( this.max.x - this.min.x ),
+ ( point.y - this.min.y ) / ( this.max.y - this.min.y ),
+ ( point.z - this.min.z ) / ( this.max.z - this.min.z )
+ );
+
+ },
+
+ intersectsBox: function ( box ) {
+
+ // using 6 splitting planes to rule out intersections.
+ return box.max.x < this.min.x || box.min.x > this.max.x ||
+ box.max.y < this.min.y || box.min.y > this.max.y ||
+ box.max.z < this.min.z || box.min.z > this.max.z ? false : true;
+
+ },
+
+ intersectsSphere: function ( sphere ) {
+
+ // Find the point on the AABB closest to the sphere center.
+ this.clampPoint( sphere.center, _vector$2 );
+
+ // If that point is inside the sphere, the AABB and sphere intersect.
+ return _vector$2.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );
+
+ },
+
+ intersectsPlane: function ( plane ) {
+
+ // We compute the minimum and maximum dot product values. If those values
+ // are on the same side (back or front) of the plane, then there is no intersection.
+
+ var min, max;
+
+ if ( plane.normal.x > 0 ) {
+
+ min = plane.normal.x * this.min.x;
+ max = plane.normal.x * this.max.x;
+
+ } else {
+
+ min = plane.normal.x * this.max.x;
+ max = plane.normal.x * this.min.x;
+
+ }
+
+ if ( plane.normal.y > 0 ) {
+
+ min += plane.normal.y * this.min.y;
+ max += plane.normal.y * this.max.y;
+
+ } else {
+
+ min += plane.normal.y * this.max.y;
+ max += plane.normal.y * this.min.y;
+
+ }
+
+ if ( plane.normal.z > 0 ) {
+
+ min += plane.normal.z * this.min.z;
+ max += plane.normal.z * this.max.z;
+
+ } else {
+
+ min += plane.normal.z * this.max.z;
+ max += plane.normal.z * this.min.z;
+
+ }
+
+ return ( min <= - plane.constant && max >= - plane.constant );
+
+ },
+
+ intersectsTriangle: function ( triangle ) {
+
+ if ( this.isEmpty() ) {
+
+ return false;
+
+ }
+
+ // compute box center and extents
+ this.getCenter( _center );
+ _extents.subVectors( this.max, _center );
+
+ // translate triangle to aabb origin
+ _v0.subVectors( triangle.a, _center );
+ _v1$2.subVectors( triangle.b, _center );
+ _v2.subVectors( triangle.c, _center );
+
+ // compute edge vectors for triangle
+ _f0.subVectors( _v1$2, _v0 );
+ _f1.subVectors( _v2, _v1$2 );
+ _f2.subVectors( _v0, _v2 );
+
+ // test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb
+ // make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation
+ // axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)
+ var axes = [
+ 0, - _f0.z, _f0.y, 0, - _f1.z, _f1.y, 0, - _f2.z, _f2.y,
+ _f0.z, 0, - _f0.x, _f1.z, 0, - _f1.x, _f2.z, 0, - _f2.x,
+ - _f0.y, _f0.x, 0, - _f1.y, _f1.x, 0, - _f2.y, _f2.x, 0
+ ];
+ if ( ! satForAxes( axes, _v0, _v1$2, _v2, _extents ) ) {
+
+ return false;
+
+ }
+
+ // test 3 face normals from the aabb
+ axes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];
+ if ( ! satForAxes( axes, _v0, _v1$2, _v2, _extents ) ) {
+
+ return false;
+
+ }
+
+ // finally testing the face normal of the triangle
+ // use already existing triangle edge vectors here
+ _triangleNormal.crossVectors( _f0, _f1 );
+ axes = [ _triangleNormal.x, _triangleNormal.y, _triangleNormal.z ];
+
+ return satForAxes( axes, _v0, _v1$2, _v2, _extents );
+
+ },
+
+ clampPoint: function ( point, target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Box3: .clampPoint() target is now required' );
+ target = new Vector3();
+
+ }
+
+ return target.copy( point ).clamp( this.min, this.max );
+
+ },
+
+ distanceToPoint: function ( point ) {
+
+ var clampedPoint = _vector$2.copy( point ).clamp( this.min, this.max );
+
+ return clampedPoint.sub( point ).length();
+
+ },
+
+ getBoundingSphere: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.error( 'THREE.Box3: .getBoundingSphere() target is now required' );
+ //target = new Sphere(); // removed to avoid cyclic dependency
+
+ }
+
+ this.getCenter( target.center );
+
+ target.radius = this.getSize( _vector$2 ).length() * 0.5;
+
+ return target;
+
+ },
+
+ intersect: function ( box ) {
+
+ this.min.max( box.min );
+ this.max.min( box.max );
+
+ // ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.
+ if ( this.isEmpty() ) { this.makeEmpty(); }
+
+ return this;
+
+ },
+
+ union: function ( box ) {
+
+ this.min.min( box.min );
+ this.max.max( box.max );
+
+ return this;
+
+ },
+
+ applyMatrix4: function ( matrix ) {
+
+ // transform of empty box is an empty box.
+ if ( this.isEmpty() ) { return this; }
+
+ // NOTE: I am using a binary pattern to specify all 2^3 combinations below
+ _points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000
+ _points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001
+ _points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010
+ _points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011
+ _points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100
+ _points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101
+ _points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110
+ _points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 111
+
+ this.setFromPoints( _points );
+
+ return this;
+
+ },
+
+ translate: function ( offset ) {
+
+ this.min.add( offset );
+ this.max.add( offset );
+
+ return this;
+
+ },
+
+ equals: function ( box ) {
+
+ return box.min.equals( this.min ) && box.max.equals( this.max );
+
+ }
+
+ } );
+
+ function satForAxes( axes, v0, v1, v2, extents ) {
+
+ var i, j;
+
+ for ( i = 0, j = axes.length - 3; i <= j; i += 3 ) {
+
+ _testAxis.fromArray( axes, i );
+ // project the aabb onto the seperating axis
+ var r = extents.x * Math.abs( _testAxis.x ) + extents.y * Math.abs( _testAxis.y ) + extents.z * Math.abs( _testAxis.z );
+ // project all 3 vertices of the triangle onto the seperating axis
+ var p0 = v0.dot( _testAxis );
+ var p1 = v1.dot( _testAxis );
+ var p2 = v2.dot( _testAxis );
+ // actual test, basically see if either of the most extreme of the triangle points intersects r
+ if ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {
+
+ // points of the projected triangle are outside the projected half-length of the aabb
+ // the axis is seperating and we can exit
+ return false;
+
+ }
+
+ }
+
+ return true;
+
+ }
+
+ var _box = new Box3();
+
+ /**
+ * @author bhouston / http://clara.io
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+ function Sphere( center, radius ) {
+
+ this.center = ( center !== undefined ) ? center : new Vector3();
+ this.radius = ( radius !== undefined ) ? radius : 0;
+
+ }
+
+ Object.assign( Sphere.prototype, {
+
+ set: function ( center, radius ) {
+
+ this.center.copy( center );
+ this.radius = radius;
+
+ return this;
+
+ },
+
+ setFromPoints: function ( points, optionalCenter ) {
+
+ var center = this.center;
+
+ if ( optionalCenter !== undefined ) {
+
+ center.copy( optionalCenter );
+
+ } else {
+
+ _box.setFromPoints( points ).getCenter( center );
+
+ }
+
+ var maxRadiusSq = 0;
+
+ for ( var i = 0, il = points.length; i < il; i ++ ) {
+
+ maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );
+
+ }
+
+ this.radius = Math.sqrt( maxRadiusSq );
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ },
+
+ copy: function ( sphere ) {
+
+ this.center.copy( sphere.center );
+ this.radius = sphere.radius;
+
+ return this;
+
+ },
+
+ empty: function () {
+
+ return ( this.radius <= 0 );
+
+ },
+
+ containsPoint: function ( point ) {
+
+ return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );
+
+ },
+
+ distanceToPoint: function ( point ) {
+
+ return ( point.distanceTo( this.center ) - this.radius );
+
+ },
+
+ intersectsSphere: function ( sphere ) {
+
+ var radiusSum = this.radius + sphere.radius;
+
+ return sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );
+
+ },
+
+ intersectsBox: function ( box ) {
+
+ return box.intersectsSphere( this );
+
+ },
+
+ intersectsPlane: function ( plane ) {
+
+ return Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;
+
+ },
+
+ clampPoint: function ( point, target ) {
+
+ var deltaLengthSq = this.center.distanceToSquared( point );
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Sphere: .clampPoint() target is now required' );
+ target = new Vector3();
+
+ }
+
+ target.copy( point );
+
+ if ( deltaLengthSq > ( this.radius * this.radius ) ) {
+
+ target.sub( this.center ).normalize();
+ target.multiplyScalar( this.radius ).add( this.center );
+
+ }
+
+ return target;
+
+ },
+
+ getBoundingBox: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Sphere: .getBoundingBox() target is now required' );
+ target = new Box3();
+
+ }
+
+ target.set( this.center, this.center );
+ target.expandByScalar( this.radius );
+
+ return target;
+
+ },
+
+ applyMatrix4: function ( matrix ) {
+
+ this.center.applyMatrix4( matrix );
+ this.radius = this.radius * matrix.getMaxScaleOnAxis();
+
+ return this;
+
+ },
+
+ translate: function ( offset ) {
+
+ this.center.add( offset );
+
+ return this;
+
+ },
+
+ equals: function ( sphere ) {
+
+ return sphere.center.equals( this.center ) && ( sphere.radius === this.radius );
+
+ }
+
+ } );
+
+ var _vector$3 = new Vector3();
+ var _segCenter = new Vector3();
+ var _segDir = new Vector3();
+ var _diff = new Vector3();
+
+ var _edge1 = new Vector3();
+ var _edge2 = new Vector3();
+ var _normal = new Vector3();
+
+ /**
+ * @author bhouston / http://clara.io
+ */
+
+ function Ray( origin, direction ) {
+
+ this.origin = ( origin !== undefined ) ? origin : new Vector3();
+ this.direction = ( direction !== undefined ) ? direction : new Vector3();
+
+ }
+
+ Object.assign( Ray.prototype, {
+
+ set: function ( origin, direction ) {
+
+ this.origin.copy( origin );
+ this.direction.copy( direction );
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ },
+
+ copy: function ( ray ) {
+
+ this.origin.copy( ray.origin );
+ this.direction.copy( ray.direction );
+
+ return this;
+
+ },
+
+ at: function ( t, target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Ray: .at() target is now required' );
+ target = new Vector3();
+
+ }
+
+ return target.copy( this.direction ).multiplyScalar( t ).add( this.origin );
+
+ },
+
+ lookAt: function ( v ) {
+
+ this.direction.copy( v ).sub( this.origin ).normalize();
+
+ return this;
+
+ },
+
+ recast: function ( t ) {
+
+ this.origin.copy( this.at( t, _vector$3 ) );
+
+ return this;
+
+ },
+
+ closestPointToPoint: function ( point, target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Ray: .closestPointToPoint() target is now required' );
+ target = new Vector3();
+
+ }
+
+ target.subVectors( point, this.origin );
+
+ var directionDistance = target.dot( this.direction );
+
+ if ( directionDistance < 0 ) {
+
+ return target.copy( this.origin );
+
+ }
+
+ return target.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );
+
+ },
+
+ distanceToPoint: function ( point ) {
+
+ return Math.sqrt( this.distanceSqToPoint( point ) );
+
+ },
+
+ distanceSqToPoint: function ( point ) {
+
+ var directionDistance = _vector$3.subVectors( point, this.origin ).dot( this.direction );
+
+ // point behind the ray
+
+ if ( directionDistance < 0 ) {
+
+ return this.origin.distanceToSquared( point );
+
+ }
+
+ _vector$3.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );
+
+ return _vector$3.distanceToSquared( point );
+
+ },
+
+ distanceSqToSegment: function ( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {
+
+ // from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteDistRaySegment.h
+ // It returns the min distance between the ray and the segment
+ // defined by v0 and v1
+ // It can also set two optional targets :
+ // - The closest point on the ray
+ // - The closest point on the segment
+
+ _segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );
+ _segDir.copy( v1 ).sub( v0 ).normalize();
+ _diff.copy( this.origin ).sub( _segCenter );
+
+ var segExtent = v0.distanceTo( v1 ) * 0.5;
+ var a01 = - this.direction.dot( _segDir );
+ var b0 = _diff.dot( this.direction );
+ var b1 = - _diff.dot( _segDir );
+ var c = _diff.lengthSq();
+ var det = Math.abs( 1 - a01 * a01 );
+ var s0, s1, sqrDist, extDet;
+
+ if ( det > 0 ) {
+
+ // The ray and segment are not parallel.
+
+ s0 = a01 * b1 - b0;
+ s1 = a01 * b0 - b1;
+ extDet = segExtent * det;
+
+ if ( s0 >= 0 ) {
+
+ if ( s1 >= - extDet ) {
+
+ if ( s1 <= extDet ) {
+
+ // region 0
+ // Minimum at interior points of ray and segment.
+
+ var invDet = 1 / det;
+ s0 *= invDet;
+ s1 *= invDet;
+ sqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;
+
+ } else {
+
+ // region 1
+
+ s1 = segExtent;
+ s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
+ sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+
+ }
+
+ } else {
+
+ // region 5
+
+ s1 = - segExtent;
+ s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
+ sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+
+ }
+
+ } else {
+
+ if ( s1 <= - extDet ) {
+
+ // region 4
+
+ s0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );
+ s1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
+ sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+
+ } else if ( s1 <= extDet ) {
+
+ // region 3
+
+ s0 = 0;
+ s1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );
+ sqrDist = s1 * ( s1 + 2 * b1 ) + c;
+
+ } else {
+
+ // region 2
+
+ s0 = Math.max( 0, - ( a01 * segExtent + b0 ) );
+ s1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
+ sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+
+ }
+
+ }
+
+ } else {
+
+ // Ray and segment are parallel.
+
+ s1 = ( a01 > 0 ) ? - segExtent : segExtent;
+ s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
+ sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+
+ }
+
+ if ( optionalPointOnRay ) {
+
+ optionalPointOnRay.copy( this.direction ).multiplyScalar( s0 ).add( this.origin );
+
+ }
+
+ if ( optionalPointOnSegment ) {
+
+ optionalPointOnSegment.copy( _segDir ).multiplyScalar( s1 ).add( _segCenter );
+
+ }
+
+ return sqrDist;
+
+ },
+
+ intersectSphere: function ( sphere, target ) {
+
+ _vector$3.subVectors( sphere.center, this.origin );
+ var tca = _vector$3.dot( this.direction );
+ var d2 = _vector$3.dot( _vector$3 ) - tca * tca;
+ var radius2 = sphere.radius * sphere.radius;
+
+ if ( d2 > radius2 ) { return null; }
+
+ var thc = Math.sqrt( radius2 - d2 );
+
+ // t0 = first intersect point - entrance on front of sphere
+ var t0 = tca - thc;
+
+ // t1 = second intersect point - exit point on back of sphere
+ var t1 = tca + thc;
+
+ // test to see if both t0 and t1 are behind the ray - if so, return null
+ if ( t0 < 0 && t1 < 0 ) { return null; }
+
+ // test to see if t0 is behind the ray:
+ // if it is, the ray is inside the sphere, so return the second exit point scaled by t1,
+ // in order to always return an intersect point that is in front of the ray.
+ if ( t0 < 0 ) { return this.at( t1, target ); }
+
+ // else t0 is in front of the ray, so return the first collision point scaled by t0
+ return this.at( t0, target );
+
+ },
+
+ intersectsSphere: function ( sphere ) {
+
+ return this.distanceSqToPoint( sphere.center ) <= ( sphere.radius * sphere.radius );
+
+ },
+
+ distanceToPlane: function ( plane ) {
+
+ var denominator = plane.normal.dot( this.direction );
+
+ if ( denominator === 0 ) {
+
+ // line is coplanar, return origin
+ if ( plane.distanceToPoint( this.origin ) === 0 ) {
+
+ return 0;
+
+ }
+
+ // Null is preferable to undefined since undefined means.... it is undefined
+
+ return null;
+
+ }
+
+ var t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;
+
+ // Return if the ray never intersects the plane
+
+ return t >= 0 ? t : null;
+
+ },
+
+ intersectPlane: function ( plane, target ) {
+
+ var t = this.distanceToPlane( plane );
+
+ if ( t === null ) {
+
+ return null;
+
+ }
+
+ return this.at( t, target );
+
+ },
+
+ intersectsPlane: function ( plane ) {
+
+ // check if the ray lies on the plane first
+
+ var distToPoint = plane.distanceToPoint( this.origin );
+
+ if ( distToPoint === 0 ) {
+
+ return true;
+
+ }
+
+ var denominator = plane.normal.dot( this.direction );
+
+ if ( denominator * distToPoint < 0 ) {
+
+ return true;
+
+ }
+
+ // ray origin is behind the plane (and is pointing behind it)
+
+ return false;
+
+ },
+
+ intersectBox: function ( box, target ) {
+
+ var tmin, tmax, tymin, tymax, tzmin, tzmax;
+
+ var invdirx = 1 / this.direction.x,
+ invdiry = 1 / this.direction.y,
+ invdirz = 1 / this.direction.z;
+
+ var origin = this.origin;
+
+ if ( invdirx >= 0 ) {
+
+ tmin = ( box.min.x - origin.x ) * invdirx;
+ tmax = ( box.max.x - origin.x ) * invdirx;
+
+ } else {
+
+ tmin = ( box.max.x - origin.x ) * invdirx;
+ tmax = ( box.min.x - origin.x ) * invdirx;
+
+ }
+
+ if ( invdiry >= 0 ) {
+
+ tymin = ( box.min.y - origin.y ) * invdiry;
+ tymax = ( box.max.y - origin.y ) * invdiry;
+
+ } else {
+
+ tymin = ( box.max.y - origin.y ) * invdiry;
+ tymax = ( box.min.y - origin.y ) * invdiry;
+
+ }
+
+ if ( ( tmin > tymax ) || ( tymin > tmax ) ) { return null; }
+
+ // These lines also handle the case where tmin or tmax is NaN
+ // (result of 0 * Infinity). x !== x returns true if x is NaN
+
+ if ( tymin > tmin || tmin !== tmin ) { tmin = tymin; }
+
+ if ( tymax < tmax || tmax !== tmax ) { tmax = tymax; }
+
+ if ( invdirz >= 0 ) {
+
+ tzmin = ( box.min.z - origin.z ) * invdirz;
+ tzmax = ( box.max.z - origin.z ) * invdirz;
+
+ } else {
+
+ tzmin = ( box.max.z - origin.z ) * invdirz;
+ tzmax = ( box.min.z - origin.z ) * invdirz;
+
+ }
+
+ if ( ( tmin > tzmax ) || ( tzmin > tmax ) ) { return null; }
+
+ if ( tzmin > tmin || tmin !== tmin ) { tmin = tzmin; }
+
+ if ( tzmax < tmax || tmax !== tmax ) { tmax = tzmax; }
+
+ //return point closest to the ray (positive side)
+
+ if ( tmax < 0 ) { return null; }
+
+ return this.at( tmin >= 0 ? tmin : tmax, target );
+
+ },
+
+ intersectsBox: function ( box ) {
+
+ return this.intersectBox( box, _vector$3 ) !== null;
+
+ },
+
+ intersectTriangle: function ( a, b, c, backfaceCulling, target ) {
+
+ // Compute the offset origin, edges, and normal.
+
+ // from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h
+
+ _edge1.subVectors( b, a );
+ _edge2.subVectors( c, a );
+ _normal.crossVectors( _edge1, _edge2 );
+
+ // Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
+ // E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
+ // |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
+ // |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
+ // |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)
+ var DdN = this.direction.dot( _normal );
+ var sign;
+
+ if ( DdN > 0 ) {
+
+ if ( backfaceCulling ) { return null; }
+ sign = 1;
+
+ } else if ( DdN < 0 ) {
+
+ sign = - 1;
+ DdN = - DdN;
+
+ } else {
+
+ return null;
+
+ }
+
+ _diff.subVectors( this.origin, a );
+ var DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );
+
+ // b1 < 0, no intersection
+ if ( DdQxE2 < 0 ) {
+
+ return null;
+
+ }
+
+ var DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );
+
+ // b2 < 0, no intersection
+ if ( DdE1xQ < 0 ) {
+
+ return null;
+
+ }
+
+ // b1+b2 > 1, no intersection
+ if ( DdQxE2 + DdE1xQ > DdN ) {
+
+ return null;
+
+ }
+
+ // Line intersects triangle, check if ray does.
+ var QdN = - sign * _diff.dot( _normal );
+
+ // t < 0, no intersection
+ if ( QdN < 0 ) {
+
+ return null;
+
+ }
+
+ // Ray intersects triangle.
+ return this.at( QdN / DdN, target );
+
+ },
+
+ applyMatrix4: function ( matrix4 ) {
+
+ this.origin.applyMatrix4( matrix4 );
+ this.direction.transformDirection( matrix4 );
+
+ return this;
+
+ },
+
+ equals: function ( ray ) {
+
+ return ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );
+
+ }
+
+ } );
+
+ /**
+ * @author bhouston / http://clara.io
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+ var _v0$1 = new Vector3();
+ var _v1$3 = new Vector3();
+ var _v2$1 = new Vector3();
+ var _v3 = new Vector3();
+
+ var _vab = new Vector3();
+ var _vac = new Vector3();
+ var _vbc = new Vector3();
+ var _vap = new Vector3();
+ var _vbp = new Vector3();
+ var _vcp = new Vector3();
+
+ function Triangle( a, b, c ) {
+
+ this.a = ( a !== undefined ) ? a : new Vector3();
+ this.b = ( b !== undefined ) ? b : new Vector3();
+ this.c = ( c !== undefined ) ? c : new Vector3();
+
+ }
+
+ Object.assign( Triangle, {
+
+ getNormal: function ( a, b, c, target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Triangle: .getNormal() target is now required' );
+ target = new Vector3();
+
+ }
+
+ target.subVectors( c, b );
+ _v0$1.subVectors( a, b );
+ target.cross( _v0$1 );
+
+ var targetLengthSq = target.lengthSq();
+ if ( targetLengthSq > 0 ) {
+
+ return target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );
+
+ }
+
+ return target.set( 0, 0, 0 );
+
+ },
+
+ // static/instance method to calculate barycentric coordinates
+ // based on: http://www.blackpawn.com/texts/pointinpoly/default.html
+ getBarycoord: function ( point, a, b, c, target ) {
+
+ _v0$1.subVectors( c, a );
+ _v1$3.subVectors( b, a );
+ _v2$1.subVectors( point, a );
+
+ var dot00 = _v0$1.dot( _v0$1 );
+ var dot01 = _v0$1.dot( _v1$3 );
+ var dot02 = _v0$1.dot( _v2$1 );
+ var dot11 = _v1$3.dot( _v1$3 );
+ var dot12 = _v1$3.dot( _v2$1 );
+
+ var denom = ( dot00 * dot11 - dot01 * dot01 );
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Triangle: .getBarycoord() target is now required' );
+ target = new Vector3();
+
+ }
+
+ // collinear or singular triangle
+ if ( denom === 0 ) {
+
+ // arbitrary location outside of triangle?
+ // not sure if this is the best idea, maybe should be returning undefined
+ return target.set( - 2, - 1, - 1 );
+
+ }
+
+ var invDenom = 1 / denom;
+ var u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;
+ var v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;
+
+ // barycentric coordinates must always sum to 1
+ return target.set( 1 - u - v, v, u );
+
+ },
+
+ containsPoint: function ( point, a, b, c ) {
+
+ Triangle.getBarycoord( point, a, b, c, _v3 );
+
+ return ( _v3.x >= 0 ) && ( _v3.y >= 0 ) && ( ( _v3.x + _v3.y ) <= 1 );
+
+ },
+
+ getUV: function ( point, p1, p2, p3, uv1, uv2, uv3, target ) {
+
+ this.getBarycoord( point, p1, p2, p3, _v3 );
+
+ target.set( 0, 0 );
+ target.addScaledVector( uv1, _v3.x );
+ target.addScaledVector( uv2, _v3.y );
+ target.addScaledVector( uv3, _v3.z );
+
+ return target;
+
+ },
+
+ isFrontFacing: function ( a, b, c, direction ) {
+
+ _v0$1.subVectors( c, b );
+ _v1$3.subVectors( a, b );
+
+ // strictly front facing
+ return ( _v0$1.cross( _v1$3 ).dot( direction ) < 0 ) ? true : false;
+
+ }
+
+ } );
+
+ Object.assign( Triangle.prototype, {
+
+ set: function ( a, b, c ) {
+
+ this.a.copy( a );
+ this.b.copy( b );
+ this.c.copy( c );
+
+ return this;
+
+ },
+
+ setFromPointsAndIndices: function ( points, i0, i1, i2 ) {
+
+ this.a.copy( points[ i0 ] );
+ this.b.copy( points[ i1 ] );
+ this.c.copy( points[ i2 ] );
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ },
+
+ copy: function ( triangle ) {
+
+ this.a.copy( triangle.a );
+ this.b.copy( triangle.b );
+ this.c.copy( triangle.c );
+
+ return this;
+
+ },
+
+ getArea: function () {
+
+ _v0$1.subVectors( this.c, this.b );
+ _v1$3.subVectors( this.a, this.b );
+
+ return _v0$1.cross( _v1$3 ).length() * 0.5;
+
+ },
+
+ getMidpoint: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Triangle: .getMidpoint() target is now required' );
+ target = new Vector3();
+
+ }
+
+ return target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );
+
+ },
+
+ getNormal: function ( target ) {
+
+ return Triangle.getNormal( this.a, this.b, this.c, target );
+
+ },
+
+ getPlane: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Triangle: .getPlane() target is now required' );
+ target = new Vector3();
+
+ }
+
+ return target.setFromCoplanarPoints( this.a, this.b, this.c );
+
+ },
+
+ getBarycoord: function ( point, target ) {
+
+ return Triangle.getBarycoord( point, this.a, this.b, this.c, target );
+
+ },
+
+ getUV: function ( point, uv1, uv2, uv3, target ) {
+
+ return Triangle.getUV( point, this.a, this.b, this.c, uv1, uv2, uv3, target );
+
+ },
+
+ containsPoint: function ( point ) {
+
+ return Triangle.containsPoint( point, this.a, this.b, this.c );
+
+ },
+
+ isFrontFacing: function ( direction ) {
+
+ return Triangle.isFrontFacing( this.a, this.b, this.c, direction );
+
+ },
+
+ intersectsBox: function ( box ) {
+
+ return box.intersectsTriangle( this );
+
+ },
+
+ closestPointToPoint: function ( p, target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Triangle: .closestPointToPoint() target is now required' );
+ target = new Vector3();
+
+ }
+
+ var a = this.a, b = this.b, c = this.c;
+ var v, w;
+
+ // algorithm thanks to Real-Time Collision Detection by Christer Ericson,
+ // published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,
+ // under the accompanying license; see chapter 5.1.5 for detailed explanation.
+ // basically, we're distinguishing which of the voronoi regions of the triangle
+ // the point lies in with the minimum amount of redundant computation.
+
+ _vab.subVectors( b, a );
+ _vac.subVectors( c, a );
+ _vap.subVectors( p, a );
+ var d1 = _vab.dot( _vap );
+ var d2 = _vac.dot( _vap );
+ if ( d1 <= 0 && d2 <= 0 ) {
+
+ // vertex region of A; barycentric coords (1, 0, 0)
+ return target.copy( a );
+
+ }
+
+ _vbp.subVectors( p, b );
+ var d3 = _vab.dot( _vbp );
+ var d4 = _vac.dot( _vbp );
+ if ( d3 >= 0 && d4 <= d3 ) {
+
+ // vertex region of B; barycentric coords (0, 1, 0)
+ return target.copy( b );
+
+ }
+
+ var vc = d1 * d4 - d3 * d2;
+ if ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {
+
+ v = d1 / ( d1 - d3 );
+ // edge region of AB; barycentric coords (1-v, v, 0)
+ return target.copy( a ).addScaledVector( _vab, v );
+
+ }
+
+ _vcp.subVectors( p, c );
+ var d5 = _vab.dot( _vcp );
+ var d6 = _vac.dot( _vcp );
+ if ( d6 >= 0 && d5 <= d6 ) {
+
+ // vertex region of C; barycentric coords (0, 0, 1)
+ return target.copy( c );
+
+ }
+
+ var vb = d5 * d2 - d1 * d6;
+ if ( vb <= 0 && d2 >= 0 && d6 <= 0 ) {
+
+ w = d2 / ( d2 - d6 );
+ // edge region of AC; barycentric coords (1-w, 0, w)
+ return target.copy( a ).addScaledVector( _vac, w );
+
+ }
+
+ var va = d3 * d6 - d5 * d4;
+ if ( va <= 0 && ( d4 - d3 ) >= 0 && ( d5 - d6 ) >= 0 ) {
+
+ _vbc.subVectors( c, b );
+ w = ( d4 - d3 ) / ( ( d4 - d3 ) + ( d5 - d6 ) );
+ // edge region of BC; barycentric coords (0, 1-w, w)
+ return target.copy( b ).addScaledVector( _vbc, w ); // edge region of BC
+
+ }
+
+ // face region
+ var denom = 1 / ( va + vb + vc );
+ // u = va * denom
+ v = vb * denom;
+ w = vc * denom;
+
+ return target.copy( a ).addScaledVector( _vab, v ).addScaledVector( _vac, w );
+
+ },
+
+ equals: function ( triangle ) {
+
+ return triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+ var _colorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,
+ 'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,
+ 'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,
+ 'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,
+ 'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,
+ 'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,
+ 'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,
+ 'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,
+ 'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,
+ 'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,
+ 'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,
+ 'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,
+ 'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,
+ 'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,
+ 'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,
+ 'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,
+ 'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,
+ 'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,
+ 'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,
+ 'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,
+ 'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,
+ 'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,
+ 'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,
+ 'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };
+
+ var _hslA = { h: 0, s: 0, l: 0 };
+ var _hslB = { h: 0, s: 0, l: 0 };
+
+ function Color( r, g, b ) {
+
+ if ( g === undefined && b === undefined ) {
+
+ // r is THREE.Color, hex or string
+ return this.set( r );
+
+ }
+
+ return this.setRGB( r, g, b );
+
+ }
+
+ function hue2rgb( p, q, t ) {
+
+ if ( t < 0 ) { t += 1; }
+ if ( t > 1 ) { t -= 1; }
+ if ( t < 1 / 6 ) { return p + ( q - p ) * 6 * t; }
+ if ( t < 1 / 2 ) { return q; }
+ if ( t < 2 / 3 ) { return p + ( q - p ) * 6 * ( 2 / 3 - t ); }
+ return p;
+
+ }
+
+ function SRGBToLinear( c ) {
+
+ return ( c < 0.04045 ) ? c * 0.0773993808 : Math.pow( c * 0.9478672986 + 0.0521327014, 2.4 );
+
+ }
+
+ function LinearToSRGB( c ) {
+
+ return ( c < 0.0031308 ) ? c * 12.92 : 1.055 * ( Math.pow( c, 0.41666 ) ) - 0.055;
+
+ }
+
+ Object.assign( Color.prototype, {
+
+ isColor: true,
+
+ r: 1, g: 1, b: 1,
+
+ set: function ( value ) {
+
+ if ( value && value.isColor ) {
+
+ this.copy( value );
+
+ } else if ( typeof value === 'number' ) {
+
+ this.setHex( value );
+
+ } else if ( typeof value === 'string' ) {
+
+ this.setStyle( value );
+
+ }
+
+ return this;
+
+ },
+
+ setScalar: function ( scalar ) {
+
+ this.r = scalar;
+ this.g = scalar;
+ this.b = scalar;
+
+ return this;
+
+ },
+
+ setHex: function ( hex ) {
+
+ hex = Math.floor( hex );
+
+ this.r = ( hex >> 16 & 255 ) / 255;
+ this.g = ( hex >> 8 & 255 ) / 255;
+ this.b = ( hex & 255 ) / 255;
+
+ return this;
+
+ },
+
+ setRGB: function ( r, g, b ) {
+
+ this.r = r;
+ this.g = g;
+ this.b = b;
+
+ return this;
+
+ },
+
+ setHSL: function ( h, s, l ) {
+
+ // h,s,l ranges are in 0.0 - 1.0
+ h = _Math.euclideanModulo( h, 1 );
+ s = _Math.clamp( s, 0, 1 );
+ l = _Math.clamp( l, 0, 1 );
+
+ if ( s === 0 ) {
+
+ this.r = this.g = this.b = l;
+
+ } else {
+
+ var p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );
+ var q = ( 2 * l ) - p;
+
+ this.r = hue2rgb( q, p, h + 1 / 3 );
+ this.g = hue2rgb( q, p, h );
+ this.b = hue2rgb( q, p, h - 1 / 3 );
+
+ }
+
+ return this;
+
+ },
+
+ setStyle: function ( style ) {
+
+ function handleAlpha( string ) {
+
+ if ( string === undefined ) { return; }
+
+ if ( parseFloat( string ) < 1 ) {
+
+ console.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );
+
+ }
+
+ }
+
+
+ var m;
+
+ if ( m = /^((?:rgb|hsl)a?)\(\s*([^\)]*)\)/.exec( style ) ) {
+
+ // rgb / hsl
+
+ var color;
+ var name = m[ 1 ];
+ var components = m[ 2 ];
+
+ switch ( name ) {
+
+ case 'rgb':
+ case 'rgba':
+
+ if ( color = /^(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
+
+ // rgb(255,0,0) rgba(255,0,0,0.5)
+ this.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;
+ this.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;
+ this.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;
+
+ handleAlpha( color[ 5 ] );
+
+ return this;
+
+ }
+
+ if ( color = /^(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
+
+ // rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)
+ this.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;
+ this.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;
+ this.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;
+
+ handleAlpha( color[ 5 ] );
+
+ return this;
+
+ }
+
+ break;
+
+ case 'hsl':
+ case 'hsla':
+
+ if ( color = /^([0-9]*\.?[0-9]+)\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
+
+ // hsl(120,50%,50%) hsla(120,50%,50%,0.5)
+ var h = parseFloat( color[ 1 ] ) / 360;
+ var s = parseInt( color[ 2 ], 10 ) / 100;
+ var l = parseInt( color[ 3 ], 10 ) / 100;
+
+ handleAlpha( color[ 5 ] );
+
+ return this.setHSL( h, s, l );
+
+ }
+
+ break;
+
+ }
+
+ } else if ( m = /^\#([A-Fa-f0-9]+)$/.exec( style ) ) {
+
+ // hex color
+
+ var hex = m[ 1 ];
+ var size = hex.length;
+
+ if ( size === 3 ) {
+
+ // #ff0
+ this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 0 ), 16 ) / 255;
+ this.g = parseInt( hex.charAt( 1 ) + hex.charAt( 1 ), 16 ) / 255;
+ this.b = parseInt( hex.charAt( 2 ) + hex.charAt( 2 ), 16 ) / 255;
+
+ return this;
+
+ } else if ( size === 6 ) {
+
+ // #ff0000
+ this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 1 ), 16 ) / 255;
+ this.g = parseInt( hex.charAt( 2 ) + hex.charAt( 3 ), 16 ) / 255;
+ this.b = parseInt( hex.charAt( 4 ) + hex.charAt( 5 ), 16 ) / 255;
+
+ return this;
+
+ }
+
+ }
+
+ if ( style && style.length > 0 ) {
+
+ // color keywords
+ var hex = _colorKeywords[ style ];
+
+ if ( hex !== undefined ) {
+
+ // red
+ this.setHex( hex );
+
+ } else {
+
+ // unknown color
+ console.warn( 'THREE.Color: Unknown color ' + style );
+
+ }
+
+ }
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor( this.r, this.g, this.b );
+
+ },
+
+ copy: function ( color ) {
+
+ this.r = color.r;
+ this.g = color.g;
+ this.b = color.b;
+
+ return this;
+
+ },
+
+ copyGammaToLinear: function ( color, gammaFactor ) {
+
+ if ( gammaFactor === undefined ) { gammaFactor = 2.0; }
+
+ this.r = Math.pow( color.r, gammaFactor );
+ this.g = Math.pow( color.g, gammaFactor );
+ this.b = Math.pow( color.b, gammaFactor );
+
+ return this;
+
+ },
+
+ copyLinearToGamma: function ( color, gammaFactor ) {
+
+ if ( gammaFactor === undefined ) { gammaFactor = 2.0; }
+
+ var safeInverse = ( gammaFactor > 0 ) ? ( 1.0 / gammaFactor ) : 1.0;
+
+ this.r = Math.pow( color.r, safeInverse );
+ this.g = Math.pow( color.g, safeInverse );
+ this.b = Math.pow( color.b, safeInverse );
+
+ return this;
+
+ },
+
+ convertGammaToLinear: function ( gammaFactor ) {
+
+ this.copyGammaToLinear( this, gammaFactor );
+
+ return this;
+
+ },
+
+ convertLinearToGamma: function ( gammaFactor ) {
+
+ this.copyLinearToGamma( this, gammaFactor );
+
+ return this;
+
+ },
+
+ copySRGBToLinear: function ( color ) {
+
+ this.r = SRGBToLinear( color.r );
+ this.g = SRGBToLinear( color.g );
+ this.b = SRGBToLinear( color.b );
+
+ return this;
+
+ },
+
+ copyLinearToSRGB: function ( color ) {
+
+ this.r = LinearToSRGB( color.r );
+ this.g = LinearToSRGB( color.g );
+ this.b = LinearToSRGB( color.b );
+
+ return this;
+
+ },
+
+ convertSRGBToLinear: function () {
+
+ this.copySRGBToLinear( this );
+
+ return this;
+
+ },
+
+ convertLinearToSRGB: function () {
+
+ this.copyLinearToSRGB( this );
+
+ return this;
+
+ },
+
+ getHex: function () {
+
+ return ( this.r * 255 ) << 16 ^ ( this.g * 255 ) << 8 ^ ( this.b * 255 ) << 0;
+
+ },
+
+ getHexString: function () {
+
+ return ( '000000' + this.getHex().toString( 16 ) ).slice( - 6 );
+
+ },
+
+ getHSL: function ( target ) {
+
+ // h,s,l ranges are in 0.0 - 1.0
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Color: .getHSL() target is now required' );
+ target = { h: 0, s: 0, l: 0 };
+
+ }
+
+ var r = this.r, g = this.g, b = this.b;
+
+ var max = Math.max( r, g, b );
+ var min = Math.min( r, g, b );
+
+ var hue, saturation;
+ var lightness = ( min + max ) / 2.0;
+
+ if ( min === max ) {
+
+ hue = 0;
+ saturation = 0;
+
+ } else {
+
+ var delta = max - min;
+
+ saturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );
+
+ switch ( max ) {
+
+ case r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;
+ case g: hue = ( b - r ) / delta + 2; break;
+ case b: hue = ( r - g ) / delta + 4; break;
+
+ }
+
+ hue /= 6;
+
+ }
+
+ target.h = hue;
+ target.s = saturation;
+ target.l = lightness;
+
+ return target;
+
+ },
+
+ getStyle: function () {
+
+ return 'rgb(' + ( ( this.r * 255 ) | 0 ) + ',' + ( ( this.g * 255 ) | 0 ) + ',' + ( ( this.b * 255 ) | 0 ) + ')';
+
+ },
+
+ offsetHSL: function ( h, s, l ) {
+
+ this.getHSL( _hslA );
+
+ _hslA.h += h; _hslA.s += s; _hslA.l += l;
+
+ this.setHSL( _hslA.h, _hslA.s, _hslA.l );
+
+ return this;
+
+ },
+
+ add: function ( color ) {
+
+ this.r += color.r;
+ this.g += color.g;
+ this.b += color.b;
+
+ return this;
+
+ },
+
+ addColors: function ( color1, color2 ) {
+
+ this.r = color1.r + color2.r;
+ this.g = color1.g + color2.g;
+ this.b = color1.b + color2.b;
+
+ return this;
+
+ },
+
+ addScalar: function ( s ) {
+
+ this.r += s;
+ this.g += s;
+ this.b += s;
+
+ return this;
+
+ },
+
+ sub: function ( color ) {
+
+ this.r = Math.max( 0, this.r - color.r );
+ this.g = Math.max( 0, this.g - color.g );
+ this.b = Math.max( 0, this.b - color.b );
+
+ return this;
+
+ },
+
+ multiply: function ( color ) {
+
+ this.r *= color.r;
+ this.g *= color.g;
+ this.b *= color.b;
+
+ return this;
+
+ },
+
+ multiplyScalar: function ( s ) {
+
+ this.r *= s;
+ this.g *= s;
+ this.b *= s;
+
+ return this;
+
+ },
+
+ lerp: function ( color, alpha ) {
+
+ this.r += ( color.r - this.r ) * alpha;
+ this.g += ( color.g - this.g ) * alpha;
+ this.b += ( color.b - this.b ) * alpha;
+
+ return this;
+
+ },
+
+ lerpHSL: function ( color, alpha ) {
+
+ this.getHSL( _hslA );
+ color.getHSL( _hslB );
+
+ var h = _Math.lerp( _hslA.h, _hslB.h, alpha );
+ var s = _Math.lerp( _hslA.s, _hslB.s, alpha );
+ var l = _Math.lerp( _hslA.l, _hslB.l, alpha );
+
+ this.setHSL( h, s, l );
+
+ return this;
+
+ },
+
+ equals: function ( c ) {
+
+ return ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );
+
+ },
+
+ fromArray: function ( array, offset ) {
+
+ if ( offset === undefined ) { offset = 0; }
+
+ this.r = array[ offset ];
+ this.g = array[ offset + 1 ];
+ this.b = array[ offset + 2 ];
+
+ return this;
+
+ },
+
+ toArray: function ( array, offset ) {
+
+ if ( array === undefined ) { array = []; }
+ if ( offset === undefined ) { offset = 0; }
+
+ array[ offset ] = this.r;
+ array[ offset + 1 ] = this.g;
+ array[ offset + 2 ] = this.b;
+
+ return array;
+
+ },
+
+ toJSON: function () {
+
+ return this.getHex();
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author alteredq / http://alteredqualia.com/
+ */
+
+ function Face3( a, b, c, normal, color, materialIndex ) {
+
+ this.a = a;
+ this.b = b;
+ this.c = c;
+
+ this.normal = ( normal && normal.isVector3 ) ? normal : new Vector3();
+ this.vertexNormals = Array.isArray( normal ) ? normal : [];
+
+ this.color = ( color && color.isColor ) ? color : new Color();
+ this.vertexColors = Array.isArray( color ) ? color : [];
+
+ this.materialIndex = materialIndex !== undefined ? materialIndex : 0;
+
+ }
+
+ Object.assign( Face3.prototype, {
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ },
+
+ copy: function ( source ) {
+
+ this.a = source.a;
+ this.b = source.b;
+ this.c = source.c;
+
+ this.normal.copy( source.normal );
+ this.color.copy( source.color );
+
+ this.materialIndex = source.materialIndex;
+
+ for ( var i = 0, il = source.vertexNormals.length; i < il; i ++ ) {
+
+ this.vertexNormals[ i ] = source.vertexNormals[ i ].clone();
+
+ }
+
+ for ( var i = 0, il = source.vertexColors.length; i < il; i ++ ) {
+
+ this.vertexColors[ i ] = source.vertexColors[ i ].clone();
+
+ }
+
+ return this;
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author alteredq / http://alteredqualia.com/
+ */
+
+ var materialId = 0;
+
+ function Material() {
+
+ Object.defineProperty( this, 'id', { value: materialId ++ } );
+
+ this.uuid = _Math.generateUUID();
+
+ this.name = '';
+ this.type = 'Material';
+
+ this.fog = true;
+
+ this.blending = NormalBlending;
+ this.side = FrontSide;
+ this.flatShading = false;
+ this.vertexTangents = false;
+ this.vertexColors = NoColors; // THREE.NoColors, THREE.VertexColors, THREE.FaceColors
+
+ this.opacity = 1;
+ this.transparent = false;
+
+ this.blendSrc = SrcAlphaFactor;
+ this.blendDst = OneMinusSrcAlphaFactor;
+ this.blendEquation = AddEquation;
+ this.blendSrcAlpha = null;
+ this.blendDstAlpha = null;
+ this.blendEquationAlpha = null;
+
+ this.depthFunc = LessEqualDepth;
+ this.depthTest = true;
+ this.depthWrite = true;
+
+ this.stencilWriteMask = 0xff;
+ this.stencilFunc = AlwaysStencilFunc;
+ this.stencilRef = 0;
+ this.stencilFuncMask = 0xff;
+ this.stencilFail = KeepStencilOp;
+ this.stencilZFail = KeepStencilOp;
+ this.stencilZPass = KeepStencilOp;
+ this.stencilWrite = false;
+
+ this.clippingPlanes = null;
+ this.clipIntersection = false;
+ this.clipShadows = false;
+
+ this.shadowSide = null;
+
+ this.colorWrite = true;
+
+ this.precision = null; // override the renderer's default precision for this material
+
+ this.polygonOffset = false;
+ this.polygonOffsetFactor = 0;
+ this.polygonOffsetUnits = 0;
+
+ this.dithering = false;
+
+ this.alphaTest = 0;
+ this.premultipliedAlpha = false;
+
+ this.visible = true;
+
+ this.toneMapped = true;
+
+ this.userData = {};
+
+ this.needsUpdate = true;
+
+ }
+
+ Material.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+
+ constructor: Material,
+
+ isMaterial: true,
+
+ onBeforeCompile: function () {},
+
+ setValues: function ( values ) {
+
+ if ( values === undefined ) { return; }
+
+ for ( var key in values ) {
+
+ var newValue = values[ key ];
+
+ if ( newValue === undefined ) {
+
+ console.warn( "THREE.Material: '" + key + "' parameter is undefined." );
+ continue;
+
+ }
+
+ // for backward compatability if shading is set in the constructor
+ if ( key === 'shading' ) {
+
+ console.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
+ this.flatShading = ( newValue === FlatShading ) ? true : false;
+ continue;
+
+ }
+
+ var currentValue = this[ key ];
+
+ if ( currentValue === undefined ) {
+
+ console.warn( "THREE." + this.type + ": '" + key + "' is not a property of this material." );
+ continue;
+
+ }
+
+ if ( currentValue && currentValue.isColor ) {
+
+ currentValue.set( newValue );
+
+ } else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {
+
+ currentValue.copy( newValue );
+
+ } else {
+
+ this[ key ] = newValue;
+
+ }
+
+ }
+
+ },
+
+ toJSON: function ( meta ) {
+
+ var isRoot = ( meta === undefined || typeof meta === 'string' );
+
+ if ( isRoot ) {
+
+ meta = {
+ textures: {},
+ images: {}
+ };
+
+ }
+
+ var data = {
+ metadata: {
+ version: 4.5,
+ type: 'Material',
+ generator: 'Material.toJSON'
+ }
+ };
+
+ // standard Material serialization
+ data.uuid = this.uuid;
+ data.type = this.type;
+
+ if ( this.name !== '' ) { data.name = this.name; }
+
+ if ( this.color && this.color.isColor ) { data.color = this.color.getHex(); }
+
+ if ( this.roughness !== undefined ) { data.roughness = this.roughness; }
+ if ( this.metalness !== undefined ) { data.metalness = this.metalness; }
+
+ if ( this.sheen && this.sheen.isColor ) { data.sheen = this.sheen.getHex(); }
+ if ( this.emissive && this.emissive.isColor ) { data.emissive = this.emissive.getHex(); }
+ if ( this.emissiveIntensity && this.emissiveIntensity !== 1 ) { data.emissiveIntensity = this.emissiveIntensity; }
+
+ if ( this.specular && this.specular.isColor ) { data.specular = this.specular.getHex(); }
+ if ( this.shininess !== undefined ) { data.shininess = this.shininess; }
+ if ( this.clearcoat !== undefined ) { data.clearcoat = this.clearcoat; }
+ if ( this.clearcoatRoughness !== undefined ) { data.clearcoatRoughness = this.clearcoatRoughness; }
+
+ if ( this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture ) {
+
+ data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON( meta ).uuid;
+ data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();
+
+ }
+
+ if ( this.map && this.map.isTexture ) { data.map = this.map.toJSON( meta ).uuid; }
+ if ( this.matcap && this.matcap.isTexture ) { data.matcap = this.matcap.toJSON( meta ).uuid; }
+ if ( this.alphaMap && this.alphaMap.isTexture ) { data.alphaMap = this.alphaMap.toJSON( meta ).uuid; }
+ if ( this.lightMap && this.lightMap.isTexture ) { data.lightMap = this.lightMap.toJSON( meta ).uuid; }
+
+ if ( this.aoMap && this.aoMap.isTexture ) {
+
+ data.aoMap = this.aoMap.toJSON( meta ).uuid;
+ data.aoMapIntensity = this.aoMapIntensity;
+
+ }
+
+ if ( this.bumpMap && this.bumpMap.isTexture ) {
+
+ data.bumpMap = this.bumpMap.toJSON( meta ).uuid;
+ data.bumpScale = this.bumpScale;
+
+ }
+
+ if ( this.normalMap && this.normalMap.isTexture ) {
+
+ data.normalMap = this.normalMap.toJSON( meta ).uuid;
+ data.normalMapType = this.normalMapType;
+ data.normalScale = this.normalScale.toArray();
+
+ }
+
+ if ( this.displacementMap && this.displacementMap.isTexture ) {
+
+ data.displacementMap = this.displacementMap.toJSON( meta ).uuid;
+ data.displacementScale = this.displacementScale;
+ data.displacementBias = this.displacementBias;
+
+ }
+
+ if ( this.roughnessMap && this.roughnessMap.isTexture ) { data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid; }
+ if ( this.metalnessMap && this.metalnessMap.isTexture ) { data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid; }
+
+ if ( this.emissiveMap && this.emissiveMap.isTexture ) { data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid; }
+ if ( this.specularMap && this.specularMap.isTexture ) { data.specularMap = this.specularMap.toJSON( meta ).uuid; }
+
+ if ( this.envMap && this.envMap.isTexture ) {
+
+ data.envMap = this.envMap.toJSON( meta ).uuid;
+ data.reflectivity = this.reflectivity; // Scale behind envMap
+ data.refractionRatio = this.refractionRatio;
+
+ if ( this.combine !== undefined ) { data.combine = this.combine; }
+ if ( this.envMapIntensity !== undefined ) { data.envMapIntensity = this.envMapIntensity; }
+
+ }
+
+ if ( this.gradientMap && this.gradientMap.isTexture ) {
+
+ data.gradientMap = this.gradientMap.toJSON( meta ).uuid;
+
+ }
+
+ if ( this.size !== undefined ) { data.size = this.size; }
+ if ( this.sizeAttenuation !== undefined ) { data.sizeAttenuation = this.sizeAttenuation; }
+
+ if ( this.blending !== NormalBlending ) { data.blending = this.blending; }
+ if ( this.flatShading === true ) { data.flatShading = this.flatShading; }
+ if ( this.side !== FrontSide ) { data.side = this.side; }
+ if ( this.vertexColors !== NoColors ) { data.vertexColors = this.vertexColors; }
+
+ if ( this.opacity < 1 ) { data.opacity = this.opacity; }
+ if ( this.transparent === true ) { data.transparent = this.transparent; }
+
+ data.depthFunc = this.depthFunc;
+ data.depthTest = this.depthTest;
+ data.depthWrite = this.depthWrite;
+
+ data.stencilWrite = this.stencilWrite;
+ data.stencilWriteMask = this.stencilWriteMask;
+ data.stencilFunc = this.stencilFunc;
+ data.stencilRef = this.stencilRef;
+ data.stencilFuncMask = this.stencilFuncMask;
+ data.stencilFail = this.stencilFail;
+ data.stencilZFail = this.stencilZFail;
+ data.stencilZPass = this.stencilZPass;
+
+ // rotation (SpriteMaterial)
+ if ( this.rotation && this.rotation !== 0 ) { data.rotation = this.rotation; }
+
+ if ( this.polygonOffset === true ) { data.polygonOffset = true; }
+ if ( this.polygonOffsetFactor !== 0 ) { data.polygonOffsetFactor = this.polygonOffsetFactor; }
+ if ( this.polygonOffsetUnits !== 0 ) { data.polygonOffsetUnits = this.polygonOffsetUnits; }
+
+ if ( this.linewidth && this.linewidth !== 1 ) { data.linewidth = this.linewidth; }
+ if ( this.dashSize !== undefined ) { data.dashSize = this.dashSize; }
+ if ( this.gapSize !== undefined ) { data.gapSize = this.gapSize; }
+ if ( this.scale !== undefined ) { data.scale = this.scale; }
+
+ if ( this.dithering === true ) { data.dithering = true; }
+
+ if ( this.alphaTest > 0 ) { data.alphaTest = this.alphaTest; }
+ if ( this.premultipliedAlpha === true ) { data.premultipliedAlpha = this.premultipliedAlpha; }
+
+ if ( this.wireframe === true ) { data.wireframe = this.wireframe; }
+ if ( this.wireframeLinewidth > 1 ) { data.wireframeLinewidth = this.wireframeLinewidth; }
+ if ( this.wireframeLinecap !== 'round' ) { data.wireframeLinecap = this.wireframeLinecap; }
+ if ( this.wireframeLinejoin !== 'round' ) { data.wireframeLinejoin = this.wireframeLinejoin; }
+
+ if ( this.morphTargets === true ) { data.morphTargets = true; }
+ if ( this.morphNormals === true ) { data.morphNormals = true; }
+ if ( this.skinning === true ) { data.skinning = true; }
+
+ if ( this.visible === false ) { data.visible = false; }
+
+ if ( this.toneMapped === false ) { data.toneMapped = false; }
+
+ if ( JSON.stringify( this.userData ) !== '{}' ) { data.userData = this.userData; }
+
+ // TODO: Copied from Object3D.toJSON
+
+ function extractFromCache( cache ) {
+
+ var values = [];
+
+ for ( var key in cache ) {
+
+ var data = cache[ key ];
+ delete data.metadata;
+ values.push( data );
+
+ }
+
+ return values;
+
+ }
+
+ if ( isRoot ) {
+
+ var textures = extractFromCache( meta.textures );
+ var images = extractFromCache( meta.images );
+
+ if ( textures.length > 0 ) { data.textures = textures; }
+ if ( images.length > 0 ) { data.images = images; }
+
+ }
+
+ return data;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ },
+
+ copy: function ( source ) {
+
+ this.name = source.name;
+
+ this.fog = source.fog;
+
+ this.blending = source.blending;
+ this.side = source.side;
+ this.flatShading = source.flatShading;
+ this.vertexColors = source.vertexColors;
+
+ this.opacity = source.opacity;
+ this.transparent = source.transparent;
+
+ this.blendSrc = source.blendSrc;
+ this.blendDst = source.blendDst;
+ this.blendEquation = source.blendEquation;
+ this.blendSrcAlpha = source.blendSrcAlpha;
+ this.blendDstAlpha = source.blendDstAlpha;
+ this.blendEquationAlpha = source.blendEquationAlpha;
+
+ this.depthFunc = source.depthFunc;
+ this.depthTest = source.depthTest;
+ this.depthWrite = source.depthWrite;
+
+ this.stencilWrite = source.stencilWrite;
+ this.stencilWriteMask = source.stencilWriteMask;
+ this.stencilFunc = source.stencilFunc;
+ this.stencilRef = source.stencilRef;
+ this.stencilFuncMask = source.stencilFuncMask;
+ this.stencilFail = source.stencilFail;
+ this.stencilZFail = source.stencilZFail;
+ this.stencilZPass = source.stencilZPass;
+
+ this.colorWrite = source.colorWrite;
+
+ this.precision = source.precision;
+
+ this.polygonOffset = source.polygonOffset;
+ this.polygonOffsetFactor = source.polygonOffsetFactor;
+ this.polygonOffsetUnits = source.polygonOffsetUnits;
+
+ this.dithering = source.dithering;
+
+ this.alphaTest = source.alphaTest;
+ this.premultipliedAlpha = source.premultipliedAlpha;
+
+ this.visible = source.visible;
+
+ this.toneMapped = source.toneMapped;
+
+ this.userData = JSON.parse( JSON.stringify( source.userData ) );
+
+ this.clipShadows = source.clipShadows;
+ this.clipIntersection = source.clipIntersection;
+
+ var srcPlanes = source.clippingPlanes,
+ dstPlanes = null;
+
+ if ( srcPlanes !== null ) {
+
+ var n = srcPlanes.length;
+ dstPlanes = new Array( n );
+
+ for ( var i = 0; i !== n; ++ i )
+ { dstPlanes[ i ] = srcPlanes[ i ].clone(); }
+
+ }
+
+ this.clippingPlanes = dstPlanes;
+
+ this.shadowSide = source.shadowSide;
+
+ return this;
+
+ },
+
+ dispose: function () {
+
+ this.dispatchEvent( { type: 'dispose' } );
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author alteredq / http://alteredqualia.com/
+ *
+ * parameters = {
+ * color: ,
+ * opacity: ,
+ * map: new THREE.Texture( ),
+ *
+ * lightMap: new THREE.Texture( ),
+ * lightMapIntensity:
+ *
+ * aoMap: new THREE.Texture( ),
+ * aoMapIntensity:
+ *
+ * specularMap: new THREE.Texture( ),
+ *
+ * alphaMap: new THREE.Texture( ),
+ *
+ * envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
+ * combine: THREE.Multiply,
+ * reflectivity: ,
+ * refractionRatio: ,
+ *
+ * depthTest: ,
+ * depthWrite: ,
+ *
+ * wireframe: ,
+ * wireframeLinewidth: ,
+ *
+ * skinning: ,
+ * morphTargets:
+ * }
+ */
+
+ function MeshBasicMaterial( parameters ) {
+
+ Material.call( this );
+
+ this.type = 'MeshBasicMaterial';
+
+ this.color = new Color( 0xffffff ); // emissive
+
+ this.map = null;
+
+ this.lightMap = null;
+ this.lightMapIntensity = 1.0;
+
+ this.aoMap = null;
+ this.aoMapIntensity = 1.0;
+
+ this.specularMap = null;
+
+ this.alphaMap = null;
+
+ this.envMap = null;
+ this.combine = MultiplyOperation;
+ this.reflectivity = 1;
+ this.refractionRatio = 0.98;
+
+ this.wireframe = false;
+ this.wireframeLinewidth = 1;
+ this.wireframeLinecap = 'round';
+ this.wireframeLinejoin = 'round';
+
+ this.skinning = false;
+ this.morphTargets = false;
+
+ this.setValues( parameters );
+
+ }
+
+ MeshBasicMaterial.prototype = Object.create( Material.prototype );
+ MeshBasicMaterial.prototype.constructor = MeshBasicMaterial;
+
+ MeshBasicMaterial.prototype.isMeshBasicMaterial = true;
+
+ MeshBasicMaterial.prototype.copy = function ( source ) {
+
+ Material.prototype.copy.call( this, source );
+
+ this.color.copy( source.color );
+
+ this.map = source.map;
+
+ this.lightMap = source.lightMap;
+ this.lightMapIntensity = source.lightMapIntensity;
+
+ this.aoMap = source.aoMap;
+ this.aoMapIntensity = source.aoMapIntensity;
+
+ this.specularMap = source.specularMap;
+
+ this.alphaMap = source.alphaMap;
+
+ this.envMap = source.envMap;
+ this.combine = source.combine;
+ this.reflectivity = source.reflectivity;
+ this.refractionRatio = source.refractionRatio;
+
+ this.wireframe = source.wireframe;
+ this.wireframeLinewidth = source.wireframeLinewidth;
+ this.wireframeLinecap = source.wireframeLinecap;
+ this.wireframeLinejoin = source.wireframeLinejoin;
+
+ this.skinning = source.skinning;
+ this.morphTargets = source.morphTargets;
+
+ return this;
+
+ };
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+ function BufferAttribute( array, itemSize, normalized ) {
+
+ if ( Array.isArray( array ) ) {
+
+ throw new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );
+
+ }
+
+ this.name = '';
+
+ this.array = array;
+ this.itemSize = itemSize;
+ this.count = array !== undefined ? array.length / itemSize : 0;
+ this.normalized = normalized === true;
+
+ this.dynamic = false;
+ this.updateRange = { offset: 0, count: - 1 };
+
+ this.version = 0;
+
+ }
+
+ Object.defineProperty( BufferAttribute.prototype, 'needsUpdate', {
+
+ set: function ( value ) {
+
+ if ( value === true ) { this.version ++; }
+
+ }
+
+ } );
+
+ Object.assign( BufferAttribute.prototype, {
+
+ isBufferAttribute: true,
+
+ onUploadCallback: function () {},
+
+ setDynamic: function ( value ) {
+
+ this.dynamic = value;
+
+ return this;
+
+ },
+
+ copy: function ( source ) {
+
+ this.name = source.name;
+ this.array = new source.array.constructor( source.array );
+ this.itemSize = source.itemSize;
+ this.count = source.count;
+ this.normalized = source.normalized;
+
+ this.dynamic = source.dynamic;
+
+ return this;
+
+ },
+
+ copyAt: function ( index1, attribute, index2 ) {
+
+ index1 *= this.itemSize;
+ index2 *= attribute.itemSize;
+
+ for ( var i = 0, l = this.itemSize; i < l; i ++ ) {
+
+ this.array[ index1 + i ] = attribute.array[ index2 + i ];
+
+ }
+
+ return this;
+
+ },
+
+ copyArray: function ( array ) {
+
+ this.array.set( array );
+
+ return this;
+
+ },
+
+ copyColorsArray: function ( colors ) {
+
+ var array = this.array, offset = 0;
+
+ for ( var i = 0, l = colors.length; i < l; i ++ ) {
+
+ var color = colors[ i ];
+
+ if ( color === undefined ) {
+
+ console.warn( 'THREE.BufferAttribute.copyColorsArray(): color is undefined', i );
+ color = new Color();
+
+ }
+
+ array[ offset ++ ] = color.r;
+ array[ offset ++ ] = color.g;
+ array[ offset ++ ] = color.b;
+
+ }
+
+ return this;
+
+ },
+
+ copyVector2sArray: function ( vectors ) {
+
+ var array = this.array, offset = 0;
+
+ for ( var i = 0, l = vectors.length; i < l; i ++ ) {
+
+ var vector = vectors[ i ];
+
+ if ( vector === undefined ) {
+
+ console.warn( 'THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i );
+ vector = new Vector2();
+
+ }
+
+ array[ offset ++ ] = vector.x;
+ array[ offset ++ ] = vector.y;
+
+ }
+
+ return this;
+
+ },
+
+ copyVector3sArray: function ( vectors ) {
+
+ var array = this.array, offset = 0;
+
+ for ( var i = 0, l = vectors.length; i < l; i ++ ) {
+
+ var vector = vectors[ i ];
+
+ if ( vector === undefined ) {
+
+ console.warn( 'THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i );
+ vector = new Vector3();
+
+ }
+
+ array[ offset ++ ] = vector.x;
+ array[ offset ++ ] = vector.y;
+ array[ offset ++ ] = vector.z;
+
+ }
+
+ return this;
+
+ },
+
+ copyVector4sArray: function ( vectors ) {
+
+ var array = this.array, offset = 0;
+
+ for ( var i = 0, l = vectors.length; i < l; i ++ ) {
+
+ var vector = vectors[ i ];
+
+ if ( vector === undefined ) {
+
+ console.warn( 'THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i );
+ vector = new Vector4();
+
+ }
+
+ array[ offset ++ ] = vector.x;
+ array[ offset ++ ] = vector.y;
+ array[ offset ++ ] = vector.z;
+ array[ offset ++ ] = vector.w;
+
+ }
+
+ return this;
+
+ },
+
+ set: function ( value, offset ) {
+
+ if ( offset === undefined ) { offset = 0; }
+
+ this.array.set( value, offset );
+
+ return this;
+
+ },
+
+ getX: function ( index ) {
+
+ return this.array[ index * this.itemSize ];
+
+ },
+
+ setX: function ( index, x ) {
+
+ this.array[ index * this.itemSize ] = x;
+
+ return this;
+
+ },
+
+ getY: function ( index ) {
+
+ return this.array[ index * this.itemSize + 1 ];
+
+ },
+
+ setY: function ( index, y ) {
+
+ this.array[ index * this.itemSize + 1 ] = y;
+
+ return this;
+
+ },
+
+ getZ: function ( index ) {
+
+ return this.array[ index * this.itemSize + 2 ];
+
+ },
+
+ setZ: function ( index, z ) {
+
+ this.array[ index * this.itemSize + 2 ] = z;
+
+ return this;
+
+ },
+
+ getW: function ( index ) {
+
+ return this.array[ index * this.itemSize + 3 ];
+
+ },
+
+ setW: function ( index, w ) {
+
+ this.array[ index * this.itemSize + 3 ] = w;
+
+ return this;
+
+ },
+
+ setXY: function ( index, x, y ) {
+
+ index *= this.itemSize;
+
+ this.array[ index + 0 ] = x;
+ this.array[ index + 1 ] = y;
+
+ return this;
+
+ },
+
+ setXYZ: function ( index, x, y, z ) {
+
+ index *= this.itemSize;
+
+ this.array[ index + 0 ] = x;
+ this.array[ index + 1 ] = y;
+ this.array[ index + 2 ] = z;
+
+ return this;
+
+ },
+
+ setXYZW: function ( index, x, y, z, w ) {
+
+ index *= this.itemSize;
+
+ this.array[ index + 0 ] = x;
+ this.array[ index + 1 ] = y;
+ this.array[ index + 2 ] = z;
+ this.array[ index + 3 ] = w;
+
+ return this;
+
+ },
+
+ onUpload: function ( callback ) {
+
+ this.onUploadCallback = callback;
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor( this.array, this.itemSize ).copy( this );
+
+ },
+
+ toJSON: function () {
+
+ return {
+ itemSize: this.itemSize,
+ type: this.array.constructor.name,
+ array: Array.prototype.slice.call( this.array ),
+ normalized: this.normalized
+ };
+
+ }
+
+ } );
+
+ //
+
+ function Int8BufferAttribute( array, itemSize, normalized ) {
+
+ BufferAttribute.call( this, new Int8Array( array ), itemSize, normalized );
+
+ }
+
+ Int8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
+ Int8BufferAttribute.prototype.constructor = Int8BufferAttribute;
+
+
+ function Uint8BufferAttribute( array, itemSize, normalized ) {
+
+ BufferAttribute.call( this, new Uint8Array( array ), itemSize, normalized );
+
+ }
+
+ Uint8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
+ Uint8BufferAttribute.prototype.constructor = Uint8BufferAttribute;
+
+
+ function Uint8ClampedBufferAttribute( array, itemSize, normalized ) {
+
+ BufferAttribute.call( this, new Uint8ClampedArray( array ), itemSize, normalized );
+
+ }
+
+ Uint8ClampedBufferAttribute.prototype = Object.create( BufferAttribute.prototype );
+ Uint8ClampedBufferAttribute.prototype.constructor = Uint8ClampedBufferAttribute;
+
+
+ function Int16BufferAttribute( array, itemSize, normalized ) {
+
+ BufferAttribute.call( this, new Int16Array( array ), itemSize, normalized );
+
+ }
+
+ Int16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
+ Int16BufferAttribute.prototype.constructor = Int16BufferAttribute;
+
+
+ function Uint16BufferAttribute( array, itemSize, normalized ) {
+
+ BufferAttribute.call( this, new Uint16Array( array ), itemSize, normalized );
+
+ }
+
+ Uint16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
+ Uint16BufferAttribute.prototype.constructor = Uint16BufferAttribute;
+
+
+ function Int32BufferAttribute( array, itemSize, normalized ) {
+
+ BufferAttribute.call( this, new Int32Array( array ), itemSize, normalized );
+
+ }
+
+ Int32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
+ Int32BufferAttribute.prototype.constructor = Int32BufferAttribute;
+
+
+ function Uint32BufferAttribute( array, itemSize, normalized ) {
+
+ BufferAttribute.call( this, new Uint32Array( array ), itemSize, normalized );
+
+ }
+
+ Uint32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
+ Uint32BufferAttribute.prototype.constructor = Uint32BufferAttribute;
+
+
+ function Float32BufferAttribute( array, itemSize, normalized ) {
+
+ BufferAttribute.call( this, new Float32Array( array ), itemSize, normalized );
+
+ }
+
+ Float32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
+ Float32BufferAttribute.prototype.constructor = Float32BufferAttribute;
+
+
+ function Float64BufferAttribute( array, itemSize, normalized ) {
+
+ BufferAttribute.call( this, new Float64Array( array ), itemSize, normalized );
+
+ }
+
+ Float64BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
+ Float64BufferAttribute.prototype.constructor = Float64BufferAttribute;
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+ function DirectGeometry() {
+
+ this.vertices = [];
+ this.normals = [];
+ this.colors = [];
+ this.uvs = [];
+ this.uvs2 = [];
+
+ this.groups = [];
+
+ this.morphTargets = {};
+
+ this.skinWeights = [];
+ this.skinIndices = [];
+
+ // this.lineDistances = [];
+
+ this.boundingBox = null;
+ this.boundingSphere = null;
+
+ // update flags
+
+ this.verticesNeedUpdate = false;
+ this.normalsNeedUpdate = false;
+ this.colorsNeedUpdate = false;
+ this.uvsNeedUpdate = false;
+ this.groupsNeedUpdate = false;
+
+ }
+
+ Object.assign( DirectGeometry.prototype, {
+
+ computeGroups: function ( geometry ) {
+
+ var group;
+ var groups = [];
+ var materialIndex = undefined;
+
+ var faces = geometry.faces;
+
+ for ( var i = 0; i < faces.length; i ++ ) {
+
+ var face = faces[ i ];
+
+ // materials
+
+ if ( face.materialIndex !== materialIndex ) {
+
+ materialIndex = face.materialIndex;
+
+ if ( group !== undefined ) {
+
+ group.count = ( i * 3 ) - group.start;
+ groups.push( group );
+
+ }
+
+ group = {
+ start: i * 3,
+ materialIndex: materialIndex
+ };
+
+ }
+
+ }
+
+ if ( group !== undefined ) {
+
+ group.count = ( i * 3 ) - group.start;
+ groups.push( group );
+
+ }
+
+ this.groups = groups;
+
+ },
+
+ fromGeometry: function ( geometry ) {
+
+ var faces = geometry.faces;
+ var vertices = geometry.vertices;
+ var faceVertexUvs = geometry.faceVertexUvs;
+
+ var hasFaceVertexUv = faceVertexUvs[ 0 ] && faceVertexUvs[ 0 ].length > 0;
+ var hasFaceVertexUv2 = faceVertexUvs[ 1 ] && faceVertexUvs[ 1 ].length > 0;
+
+ // morphs
+
+ var morphTargets = geometry.morphTargets;
+ var morphTargetsLength = morphTargets.length;
+
+ var morphTargetsPosition;
+
+ if ( morphTargetsLength > 0 ) {
+
+ morphTargetsPosition = [];
+
+ for ( var i = 0; i < morphTargetsLength; i ++ ) {
+
+ morphTargetsPosition[ i ] = {
+ name: morphTargets[ i ].name,
+ data: []
+ };
+
+ }
+
+ this.morphTargets.position = morphTargetsPosition;
+
+ }
+
+ var morphNormals = geometry.morphNormals;
+ var morphNormalsLength = morphNormals.length;
+
+ var morphTargetsNormal;
+
+ if ( morphNormalsLength > 0 ) {
+
+ morphTargetsNormal = [];
+
+ for ( var i = 0; i < morphNormalsLength; i ++ ) {
+
+ morphTargetsNormal[ i ] = {
+ name: morphNormals[ i ].name,
+ data: []
+ };
+
+ }
+
+ this.morphTargets.normal = morphTargetsNormal;
+
+ }
+
+ // skins
+
+ var skinIndices = geometry.skinIndices;
+ var skinWeights = geometry.skinWeights;
+
+ var hasSkinIndices = skinIndices.length === vertices.length;
+ var hasSkinWeights = skinWeights.length === vertices.length;
+
+ //
+
+ if ( vertices.length > 0 && faces.length === 0 ) {
+
+ console.error( 'THREE.DirectGeometry: Faceless geometries are not supported.' );
+
+ }
+
+ for ( var i = 0; i < faces.length; i ++ ) {
+
+ var face = faces[ i ];
+
+ this.vertices.push( vertices[ face.a ], vertices[ face.b ], vertices[ face.c ] );
+
+ var vertexNormals = face.vertexNormals;
+
+ if ( vertexNormals.length === 3 ) {
+
+ this.normals.push( vertexNormals[ 0 ], vertexNormals[ 1 ], vertexNormals[ 2 ] );
+
+ } else {
+
+ var normal = face.normal;
+
+ this.normals.push( normal, normal, normal );
+
+ }
+
+ var vertexColors = face.vertexColors;
+
+ if ( vertexColors.length === 3 ) {
+
+ this.colors.push( vertexColors[ 0 ], vertexColors[ 1 ], vertexColors[ 2 ] );
+
+ } else {
+
+ var color = face.color;
+
+ this.colors.push( color, color, color );
+
+ }
+
+ if ( hasFaceVertexUv === true ) {
+
+ var vertexUvs = faceVertexUvs[ 0 ][ i ];
+
+ if ( vertexUvs !== undefined ) {
+
+ this.uvs.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );
+
+ } else {
+
+ console.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv ', i );
+
+ this.uvs.push( new Vector2(), new Vector2(), new Vector2() );
+
+ }
+
+ }
+
+ if ( hasFaceVertexUv2 === true ) {
+
+ var vertexUvs = faceVertexUvs[ 1 ][ i ];
+
+ if ( vertexUvs !== undefined ) {
+
+ this.uvs2.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );
+
+ } else {
+
+ console.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv2 ', i );
+
+ this.uvs2.push( new Vector2(), new Vector2(), new Vector2() );
+
+ }
+
+ }
+
+ // morphs
+
+ for ( var j = 0; j < morphTargetsLength; j ++ ) {
+
+ var morphTarget = morphTargets[ j ].vertices;
+
+ morphTargetsPosition[ j ].data.push( morphTarget[ face.a ], morphTarget[ face.b ], morphTarget[ face.c ] );
+
+ }
+
+ for ( var j = 0; j < morphNormalsLength; j ++ ) {
+
+ var morphNormal = morphNormals[ j ].vertexNormals[ i ];
+
+ morphTargetsNormal[ j ].data.push( morphNormal.a, morphNormal.b, morphNormal.c );
+
+ }
+
+ // skins
+
+ if ( hasSkinIndices ) {
+
+ this.skinIndices.push( skinIndices[ face.a ], skinIndices[ face.b ], skinIndices[ face.c ] );
+
+ }
+
+ if ( hasSkinWeights ) {
+
+ this.skinWeights.push( skinWeights[ face.a ], skinWeights[ face.b ], skinWeights[ face.c ] );
+
+ }
+
+ }
+
+ this.computeGroups( geometry );
+
+ this.verticesNeedUpdate = geometry.verticesNeedUpdate;
+ this.normalsNeedUpdate = geometry.normalsNeedUpdate;
+ this.colorsNeedUpdate = geometry.colorsNeedUpdate;
+ this.uvsNeedUpdate = geometry.uvsNeedUpdate;
+ this.groupsNeedUpdate = geometry.groupsNeedUpdate;
+
+ if ( geometry.boundingSphere !== null ) {
+
+ this.boundingSphere = geometry.boundingSphere.clone();
+
+ }
+
+ if ( geometry.boundingBox !== null ) {
+
+ this.boundingBox = geometry.boundingBox.clone();
+
+ }
+
+ return this;
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+ function arrayMax( array ) {
+
+ if ( array.length === 0 ) { return - Infinity; }
+
+ var max = array[ 0 ];
+
+ for ( var i = 1, l = array.length; i < l; ++ i ) {
+
+ if ( array[ i ] > max ) { max = array[ i ]; }
+
+ }
+
+ return max;
+
+ }
+
+ /**
+ * @author alteredq / http://alteredqualia.com/
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+ var _bufferGeometryId = 1; // BufferGeometry uses odd numbers as Id
+
+ var _m1$2 = new Matrix4();
+ var _obj = new Object3D();
+ var _offset = new Vector3();
+ var _box$1 = new Box3();
+ var _boxMorphTargets = new Box3();
+ var _vector$4 = new Vector3();
+
+ function BufferGeometry() {
+
+ Object.defineProperty( this, 'id', { value: _bufferGeometryId += 2 } );
+
+ this.uuid = _Math.generateUUID();
+
+ this.name = '';
+ this.type = 'BufferGeometry';
+
+ this.index = null;
+ this.attributes = {};
+
+ this.morphAttributes = {};
+
+ this.groups = [];
+
+ this.boundingBox = null;
+ this.boundingSphere = null;
+
+ this.drawRange = { start: 0, count: Infinity };
+
+ this.userData = {};
+
+ }
+
+ BufferGeometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+
+ constructor: BufferGeometry,
+
+ isBufferGeometry: true,
+
+ getIndex: function () {
+
+ return this.index;
+
+ },
+
+ setIndex: function ( index ) {
+
+ if ( Array.isArray( index ) ) {
+
+ this.index = new ( arrayMax( index ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );
+
+ } else {
+
+ this.index = index;
+
+ }
+
+ },
+
+ addAttribute: function ( name, attribute ) {
+
+ if ( ! ( attribute && attribute.isBufferAttribute ) && ! ( attribute && attribute.isInterleavedBufferAttribute ) ) {
+
+ console.warn( 'THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).' );
+
+ return this.addAttribute( name, new BufferAttribute( arguments[ 1 ], arguments[ 2 ] ) );
+
+ }
+
+ if ( name === 'index' ) {
+
+ console.warn( 'THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.' );
+ this.setIndex( attribute );
+
+ return this;
+
+ }
+
+ return this.setAttribute( name, attribute );
+
+ },
+
+ getAttribute: function ( name ) {
+
+ return this.attributes[ name ];
+
+ },
+
+ setAttribute: function ( name, attribute ) {
+
+ this.attributes[ name ] = attribute;
+
+ return this;
+
+ },
+
+ removeAttribute: function ( name ) {
+
+ delete this.attributes[ name ];
+
+ return this;
+
+ },
+
+ addGroup: function ( start, count, materialIndex ) {
+
+ this.groups.push( {
+
+ start: start,
+ count: count,
+ materialIndex: materialIndex !== undefined ? materialIndex : 0
+
+ } );
+
+ },
+
+ clearGroups: function () {
+
+ this.groups = [];
+
+ },
+
+ setDrawRange: function ( start, count ) {
+
+ this.drawRange.start = start;
+ this.drawRange.count = count;
+
+ },
+
+ applyMatrix: function ( matrix ) {
+
+ var position = this.attributes.position;
+
+ if ( position !== undefined ) {
+
+ matrix.applyToBufferAttribute( position );
+ position.needsUpdate = true;
+
+ }
+
+ var normal = this.attributes.normal;
+
+ if ( normal !== undefined ) {
+
+ var normalMatrix = new Matrix3().getNormalMatrix( matrix );
+
+ normalMatrix.applyToBufferAttribute( normal );
+ normal.needsUpdate = true;
+
+ }
+
+ var tangent = this.attributes.tangent;
+
+ if ( tangent !== undefined ) {
+
+ var normalMatrix = new Matrix3().getNormalMatrix( matrix );
+
+ // Tangent is vec4, but the '.w' component is a sign value (+1/-1).
+ normalMatrix.applyToBufferAttribute( tangent );
+ tangent.needsUpdate = true;
+
+ }
+
+ if ( this.boundingBox !== null ) {
+
+ this.computeBoundingBox();
+
+ }
+
+ if ( this.boundingSphere !== null ) {
+
+ this.computeBoundingSphere();
+
+ }
+
+ return this;
+
+ },
+
+ rotateX: function ( angle ) {
+
+ // rotate geometry around world x-axis
+
+ _m1$2.makeRotationX( angle );
+
+ this.applyMatrix( _m1$2 );
+
+ return this;
+
+ },
+
+ rotateY: function ( angle ) {
+
+ // rotate geometry around world y-axis
+
+ _m1$2.makeRotationY( angle );
+
+ this.applyMatrix( _m1$2 );
+
+ return this;
+
+ },
+
+ rotateZ: function ( angle ) {
+
+ // rotate geometry around world z-axis
+
+ _m1$2.makeRotationZ( angle );
+
+ this.applyMatrix( _m1$2 );
+
+ return this;
+
+ },
+
+ translate: function ( x, y, z ) {
+
+ // translate geometry
+
+ _m1$2.makeTranslation( x, y, z );
+
+ this.applyMatrix( _m1$2 );
+
+ return this;
+
+ },
+
+ scale: function ( x, y, z ) {
+
+ // scale geometry
+
+ _m1$2.makeScale( x, y, z );
+
+ this.applyMatrix( _m1$2 );
+
+ return this;
+
+ },
+
+ lookAt: function ( vector ) {
+
+ _obj.lookAt( vector );
+
+ _obj.updateMatrix();
+
+ this.applyMatrix( _obj.matrix );
+
+ return this;
+
+ },
+
+ center: function () {
+
+ this.computeBoundingBox();
+
+ this.boundingBox.getCenter( _offset ).negate();
+
+ this.translate( _offset.x, _offset.y, _offset.z );
+
+ return this;
+
+ },
+
+ setFromObject: function ( object ) {
+
+ // console.log( 'THREE.BufferGeometry.setFromObject(). Converting', object, this );
+
+ var geometry = object.geometry;
+
+ if ( object.isPoints || object.isLine ) {
+
+ var positions = new Float32BufferAttribute( geometry.vertices.length * 3, 3 );
+ var colors = new Float32BufferAttribute( geometry.colors.length * 3, 3 );
+
+ this.addAttribute( 'position', positions.copyVector3sArray( geometry.vertices ) );
+ this.addAttribute( 'color', colors.copyColorsArray( geometry.colors ) );
+
+ if ( geometry.lineDistances && geometry.lineDistances.length === geometry.vertices.length ) {
+
+ var lineDistances = new Float32BufferAttribute( geometry.lineDistances.length, 1 );
+
+ this.addAttribute( 'lineDistance', lineDistances.copyArray( geometry.lineDistances ) );
+
+ }
+
+ if ( geometry.boundingSphere !== null ) {
+
+ this.boundingSphere = geometry.boundingSphere.clone();
+
+ }
+
+ if ( geometry.boundingBox !== null ) {
+
+ this.boundingBox = geometry.boundingBox.clone();
+
+ }
+
+ } else if ( object.isMesh ) {
+
+ if ( geometry && geometry.isGeometry ) {
+
+ this.fromGeometry( geometry );
+
+ }
+
+ }
+
+ return this;
+
+ },
+
+ setFromPoints: function ( points ) {
+
+ var position = [];
+
+ for ( var i = 0, l = points.length; i < l; i ++ ) {
+
+ var point = points[ i ];
+ position.push( point.x, point.y, point.z || 0 );
+
+ }
+
+ this.addAttribute( 'position', new Float32BufferAttribute( position, 3 ) );
+
+ return this;
+
+ },
+
+ updateFromObject: function ( object ) {
+
+ var geometry = object.geometry;
+
+ if ( object.isMesh ) {
+
+ var direct = geometry.__directGeometry;
+
+ if ( geometry.elementsNeedUpdate === true ) {
+
+ direct = undefined;
+ geometry.elementsNeedUpdate = false;
+
+ }
+
+ if ( direct === undefined ) {
+
+ return this.fromGeometry( geometry );
+
+ }
+
+ direct.verticesNeedUpdate = geometry.verticesNeedUpdate;
+ direct.normalsNeedUpdate = geometry.normalsNeedUpdate;
+ direct.colorsNeedUpdate = geometry.colorsNeedUpdate;
+ direct.uvsNeedUpdate = geometry.uvsNeedUpdate;
+ direct.groupsNeedUpdate = geometry.groupsNeedUpdate;
+
+ geometry.verticesNeedUpdate = false;
+ geometry.normalsNeedUpdate = false;
+ geometry.colorsNeedUpdate = false;
+ geometry.uvsNeedUpdate = false;
+ geometry.groupsNeedUpdate = false;
+
+ geometry = direct;
+
+ }
+
+ var attribute;
+
+ if ( geometry.verticesNeedUpdate === true ) {
+
+ attribute = this.attributes.position;
+
+ if ( attribute !== undefined ) {
+
+ attribute.copyVector3sArray( geometry.vertices );
+ attribute.needsUpdate = true;
+
+ }
+
+ geometry.verticesNeedUpdate = false;
+
+ }
+
+ if ( geometry.normalsNeedUpdate === true ) {
+
+ attribute = this.attributes.normal;
+
+ if ( attribute !== undefined ) {
+
+ attribute.copyVector3sArray( geometry.normals );
+ attribute.needsUpdate = true;
+
+ }
+
+ geometry.normalsNeedUpdate = false;
+
+ }
+
+ if ( geometry.colorsNeedUpdate === true ) {
+
+ attribute = this.attributes.color;
+
+ if ( attribute !== undefined ) {
+
+ attribute.copyColorsArray( geometry.colors );
+ attribute.needsUpdate = true;
+
+ }
+
+ geometry.colorsNeedUpdate = false;
+
+ }
+
+ if ( geometry.uvsNeedUpdate ) {
+
+ attribute = this.attributes.uv;
+
+ if ( attribute !== undefined ) {
+
+ attribute.copyVector2sArray( geometry.uvs );
+ attribute.needsUpdate = true;
+
+ }
+
+ geometry.uvsNeedUpdate = false;
+
+ }
+
+ if ( geometry.lineDistancesNeedUpdate ) {
+
+ attribute = this.attributes.lineDistance;
+
+ if ( attribute !== undefined ) {
+
+ attribute.copyArray( geometry.lineDistances );
+ attribute.needsUpdate = true;
+
+ }
+
+ geometry.lineDistancesNeedUpdate = false;
+
+ }
+
+ if ( geometry.groupsNeedUpdate ) {
+
+ geometry.computeGroups( object.geometry );
+ this.groups = geometry.groups;
+
+ geometry.groupsNeedUpdate = false;
+
+ }
+
+ return this;
+
+ },
+
+ fromGeometry: function ( geometry ) {
+
+ geometry.__directGeometry = new DirectGeometry().fromGeometry( geometry );
+
+ return this.fromDirectGeometry( geometry.__directGeometry );
+
+ },
+
+ fromDirectGeometry: function ( geometry ) {
+
+ var positions = new Float32Array( geometry.vertices.length * 3 );
+ this.addAttribute( 'position', new BufferAttribute( positions, 3 ).copyVector3sArray( geometry.vertices ) );
+
+ if ( geometry.normals.length > 0 ) {
+
+ var normals = new Float32Array( geometry.normals.length * 3 );
+ this.addAttribute( 'normal', new BufferAttribute( normals, 3 ).copyVector3sArray( geometry.normals ) );
+
+ }
+
+ if ( geometry.colors.length > 0 ) {
+
+ var colors = new Float32Array( geometry.colors.length * 3 );
+ this.addAttribute( 'color', new BufferAttribute( colors, 3 ).copyColorsArray( geometry.colors ) );
+
+ }
+
+ if ( geometry.uvs.length > 0 ) {
+
+ var uvs = new Float32Array( geometry.uvs.length * 2 );
+ this.addAttribute( 'uv', new BufferAttribute( uvs, 2 ).copyVector2sArray( geometry.uvs ) );
+
+ }
+
+ if ( geometry.uvs2.length > 0 ) {
+
+ var uvs2 = new Float32Array( geometry.uvs2.length * 2 );
+ this.addAttribute( 'uv2', new BufferAttribute( uvs2, 2 ).copyVector2sArray( geometry.uvs2 ) );
+
+ }
+
+ // groups
+
+ this.groups = geometry.groups;
+
+ // morphs
+
+ for ( var name in geometry.morphTargets ) {
+
+ var array = [];
+ var morphTargets = geometry.morphTargets[ name ];
+
+ for ( var i = 0, l = morphTargets.length; i < l; i ++ ) {
+
+ var morphTarget = morphTargets[ i ];
+
+ var attribute = new Float32BufferAttribute( morphTarget.data.length * 3, 3 );
+ attribute.name = morphTarget.name;
+
+ array.push( attribute.copyVector3sArray( morphTarget.data ) );
+
+ }
+
+ this.morphAttributes[ name ] = array;
+
+ }
+
+ // skinning
+
+ if ( geometry.skinIndices.length > 0 ) {
+
+ var skinIndices = new Float32BufferAttribute( geometry.skinIndices.length * 4, 4 );
+ this.addAttribute( 'skinIndex', skinIndices.copyVector4sArray( geometry.skinIndices ) );
+
+ }
+
+ if ( geometry.skinWeights.length > 0 ) {
+
+ var skinWeights = new Float32BufferAttribute( geometry.skinWeights.length * 4, 4 );
+ this.addAttribute( 'skinWeight', skinWeights.copyVector4sArray( geometry.skinWeights ) );
+
+ }
+
+ //
+
+ if ( geometry.boundingSphere !== null ) {
+
+ this.boundingSphere = geometry.boundingSphere.clone();
+
+ }
+
+ if ( geometry.boundingBox !== null ) {
+
+ this.boundingBox = geometry.boundingBox.clone();
+
+ }
+
+ return this;
+
+ },
+
+ computeBoundingBox: function () {
+
+ if ( this.boundingBox === null ) {
+
+ this.boundingBox = new Box3();
+
+ }
+
+ var position = this.attributes.position;
+ var morphAttributesPosition = this.morphAttributes.position;
+
+ if ( position !== undefined ) {
+
+ this.boundingBox.setFromBufferAttribute( position );
+
+ // process morph attributes if present
+
+ if ( morphAttributesPosition ) {
+
+ for ( var i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
+
+ var morphAttribute = morphAttributesPosition[ i ];
+ _box$1.setFromBufferAttribute( morphAttribute );
+
+ this.boundingBox.expandByPoint( _box$1.min );
+ this.boundingBox.expandByPoint( _box$1.max );
+
+ }
+
+ }
+
+ } else {
+
+ this.boundingBox.makeEmpty();
+
+ }
+
+ if ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {
+
+ console.error( 'THREE.BufferGeometry.computeBoundingBox: Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this );
+
+ }
+
+ },
+
+ computeBoundingSphere: function () {
+
+ if ( this.boundingSphere === null ) {
+
+ this.boundingSphere = new Sphere();
+
+ }
+
+ var position = this.attributes.position;
+ var morphAttributesPosition = this.morphAttributes.position;
+
+ if ( position ) {
+
+ // first, find the center of the bounding sphere
+
+ var center = this.boundingSphere.center;
+
+ _box$1.setFromBufferAttribute( position );
+
+ // process morph attributes if present
+
+ if ( morphAttributesPosition ) {
+
+ for ( var i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
+
+ var morphAttribute = morphAttributesPosition[ i ];
+ _boxMorphTargets.setFromBufferAttribute( morphAttribute );
+
+ _box$1.expandByPoint( _boxMorphTargets.min );
+ _box$1.expandByPoint( _boxMorphTargets.max );
+
+ }
+
+ }
+
+ _box$1.getCenter( center );
+
+ // second, try to find a boundingSphere with a radius smaller than the
+ // boundingSphere of the boundingBox: sqrt(3) smaller in the best case
+
+ var maxRadiusSq = 0;
+
+ for ( var i = 0, il = position.count; i < il; i ++ ) {
+
+ _vector$4.fromBufferAttribute( position, i );
+
+ maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$4 ) );
+
+ }
+
+ // process morph attributes if present
+
+ if ( morphAttributesPosition ) {
+
+ for ( var i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
+
+ var morphAttribute = morphAttributesPosition[ i ];
+
+ for ( var j = 0, jl = morphAttribute.count; j < jl; j ++ ) {
+
+ _vector$4.fromBufferAttribute( morphAttribute, j );
+
+ maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$4 ) );
+
+ }
+
+ }
+
+ }
+
+ this.boundingSphere.radius = Math.sqrt( maxRadiusSq );
+
+ if ( isNaN( this.boundingSphere.radius ) ) {
+
+ console.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this );
+
+ }
+
+ }
+
+ },
+
+ computeFaceNormals: function () {
+
+ // backwards compatibility
+
+ },
+
+ computeVertexNormals: function () {
+
+ var index = this.index;
+ var attributes = this.attributes;
+
+ if ( attributes.position ) {
+
+ var positions = attributes.position.array;
+
+ if ( attributes.normal === undefined ) {
+
+ this.addAttribute( 'normal', new BufferAttribute( new Float32Array( positions.length ), 3 ) );
+
+ } else {
+
+ // reset existing normals to zero
+
+ var array = attributes.normal.array;
+
+ for ( var i = 0, il = array.length; i < il; i ++ ) {
+
+ array[ i ] = 0;
+
+ }
+
+ }
+
+ var normals = attributes.normal.array;
+
+ var vA, vB, vC;
+ var pA = new Vector3(), pB = new Vector3(), pC = new Vector3();
+ var cb = new Vector3(), ab = new Vector3();
+
+ // indexed elements
+
+ if ( index ) {
+
+ var indices = index.array;
+
+ for ( var i = 0, il = index.count; i < il; i += 3 ) {
+
+ vA = indices[ i + 0 ] * 3;
+ vB = indices[ i + 1 ] * 3;
+ vC = indices[ i + 2 ] * 3;
+
+ pA.fromArray( positions, vA );
+ pB.fromArray( positions, vB );
+ pC.fromArray( positions, vC );
+
+ cb.subVectors( pC, pB );
+ ab.subVectors( pA, pB );
+ cb.cross( ab );
+
+ normals[ vA ] += cb.x;
+ normals[ vA + 1 ] += cb.y;
+ normals[ vA + 2 ] += cb.z;
+
+ normals[ vB ] += cb.x;
+ normals[ vB + 1 ] += cb.y;
+ normals[ vB + 2 ] += cb.z;
+
+ normals[ vC ] += cb.x;
+ normals[ vC + 1 ] += cb.y;
+ normals[ vC + 2 ] += cb.z;
+
+ }
+
+ } else {
+
+ // non-indexed elements (unconnected triangle soup)
+
+ for ( var i = 0, il = positions.length; i < il; i += 9 ) {
+
+ pA.fromArray( positions, i );
+ pB.fromArray( positions, i + 3 );
+ pC.fromArray( positions, i + 6 );
+
+ cb.subVectors( pC, pB );
+ ab.subVectors( pA, pB );
+ cb.cross( ab );
+
+ normals[ i ] = cb.x;
+ normals[ i + 1 ] = cb.y;
+ normals[ i + 2 ] = cb.z;
+
+ normals[ i + 3 ] = cb.x;
+ normals[ i + 4 ] = cb.y;
+ normals[ i + 5 ] = cb.z;
+
+ normals[ i + 6 ] = cb.x;
+ normals[ i + 7 ] = cb.y;
+ normals[ i + 8 ] = cb.z;
+
+ }
+
+ }
+
+ this.normalizeNormals();
+
+ attributes.normal.needsUpdate = true;
+
+ }
+
+ },
+
+ merge: function ( geometry, offset ) {
+
+ if ( ! ( geometry && geometry.isBufferGeometry ) ) {
+
+ console.error( 'THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry );
+ return;
+
+ }
+
+ if ( offset === undefined ) {
+
+ offset = 0;
+
+ console.warn(
+ 'THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. '
+ + 'Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge.'
+ );
+
+ }
+
+ var attributes = this.attributes;
+
+ for ( var key in attributes ) {
+
+ if ( geometry.attributes[ key ] === undefined ) { continue; }
+
+ var attribute1 = attributes[ key ];
+ var attributeArray1 = attribute1.array;
+
+ var attribute2 = geometry.attributes[ key ];
+ var attributeArray2 = attribute2.array;
+
+ var attributeOffset = attribute2.itemSize * offset;
+ var length = Math.min( attributeArray2.length, attributeArray1.length - attributeOffset );
+
+ for ( var i = 0, j = attributeOffset; i < length; i ++, j ++ ) {
+
+ attributeArray1[ j ] = attributeArray2[ i ];
+
+ }
+
+ }
+
+ return this;
+
+ },
+
+ normalizeNormals: function () {
+
+ var normals = this.attributes.normal;
+
+ for ( var i = 0, il = normals.count; i < il; i ++ ) {
+
+ _vector$4.x = normals.getX( i );
+ _vector$4.y = normals.getY( i );
+ _vector$4.z = normals.getZ( i );
+
+ _vector$4.normalize();
+
+ normals.setXYZ( i, _vector$4.x, _vector$4.y, _vector$4.z );
+
+ }
+
+ },
+
+ toNonIndexed: function () {
+
+ function convertBufferAttribute( attribute, indices ) {
+
+ var array = attribute.array;
+ var itemSize = attribute.itemSize;
+
+ var array2 = new array.constructor( indices.length * itemSize );
+
+ var index = 0, index2 = 0;
+
+ for ( var i = 0, l = indices.length; i < l; i ++ ) {
+
+ index = indices[ i ] * itemSize;
+
+ for ( var j = 0; j < itemSize; j ++ ) {
+
+ array2[ index2 ++ ] = array[ index ++ ];
+
+ }
+
+ }
+
+ return new BufferAttribute( array2, itemSize );
+
+ }
+
+ //
+
+ if ( this.index === null ) {
+
+ console.warn( 'THREE.BufferGeometry.toNonIndexed(): Geometry is already non-indexed.' );
+ return this;
+
+ }
+
+ var geometry2 = new BufferGeometry();
+
+ var indices = this.index.array;
+ var attributes = this.attributes;
+
+ // attributes
+
+ for ( var name in attributes ) {
+
+ var attribute = attributes[ name ];
+
+ var newAttribute = convertBufferAttribute( attribute, indices );
+
+ geometry2.addAttribute( name, newAttribute );
+
+ }
+
+ // morph attributes
+
+ var morphAttributes = this.morphAttributes;
+
+ for ( name in morphAttributes ) {
+
+ var morphArray = [];
+ var morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes
+
+ for ( var i = 0, il = morphAttribute.length; i < il; i ++ ) {
+
+ var attribute = morphAttribute[ i ];
+
+ var newAttribute = convertBufferAttribute( attribute, indices );
+
+ morphArray.push( newAttribute );
+
+ }
+
+ geometry2.morphAttributes[ name ] = morphArray;
+
+ }
+
+ // groups
+
+ var groups = this.groups;
+
+ for ( var i = 0, l = groups.length; i < l; i ++ ) {
+
+ var group = groups[ i ];
+ geometry2.addGroup( group.start, group.count, group.materialIndex );
+
+ }
+
+ return geometry2;
+
+ },
+
+ toJSON: function () {
+
+ var data = {
+ metadata: {
+ version: 4.5,
+ type: 'BufferGeometry',
+ generator: 'BufferGeometry.toJSON'
+ }
+ };
+
+ // standard BufferGeometry serialization
+
+ data.uuid = this.uuid;
+ data.type = this.type;
+ if ( this.name !== '' ) { data.name = this.name; }
+ if ( Object.keys( this.userData ).length > 0 ) { data.userData = this.userData; }
+
+ if ( this.parameters !== undefined ) {
+
+ var parameters = this.parameters;
+
+ for ( var key in parameters ) {
+
+ if ( parameters[ key ] !== undefined ) { data[ key ] = parameters[ key ]; }
+
+ }
+
+ return data;
+
+ }
+
+ data.data = { attributes: {} };
+
+ var index = this.index;
+
+ if ( index !== null ) {
+
+ data.data.index = {
+ type: index.array.constructor.name,
+ array: Array.prototype.slice.call( index.array )
+ };
+
+ }
+
+ var attributes = this.attributes;
+
+ for ( var key in attributes ) {
+
+ var attribute = attributes[ key ];
+
+ var attributeData = attribute.toJSON();
+
+ if ( attribute.name !== '' ) { attributeData.name = attribute.name; }
+
+ data.data.attributes[ key ] = attributeData;
+
+ }
+
+ var morphAttributes = {};
+ var hasMorphAttributes = false;
+
+ for ( var key in this.morphAttributes ) {
+
+ var attributeArray = this.morphAttributes[ key ];
+
+ var array = [];
+
+ for ( var i = 0, il = attributeArray.length; i < il; i ++ ) {
+
+ var attribute = attributeArray[ i ];
+
+ var attributeData = attribute.toJSON();
+
+ if ( attribute.name !== '' ) { attributeData.name = attribute.name; }
+
+ array.push( attributeData );
+
+ }
+
+ if ( array.length > 0 ) {
+
+ morphAttributes[ key ] = array;
+
+ hasMorphAttributes = true;
+
+ }
+
+ }
+
+ if ( hasMorphAttributes ) { data.data.morphAttributes = morphAttributes; }
+
+ var groups = this.groups;
+
+ if ( groups.length > 0 ) {
+
+ data.data.groups = JSON.parse( JSON.stringify( groups ) );
+
+ }
+
+ var boundingSphere = this.boundingSphere;
+
+ if ( boundingSphere !== null ) {
+
+ data.data.boundingSphere = {
+ center: boundingSphere.center.toArray(),
+ radius: boundingSphere.radius
+ };
+
+ }
+
+ return data;
+
+ },
+
+ clone: function () {
+
+ /*
+ // Handle primitives
+
+ var parameters = this.parameters;
+
+ if ( parameters !== undefined ) {
+
+ var values = [];
+
+ for ( var key in parameters ) {
+
+ values.push( parameters[ key ] );
+
+ }
+
+ var geometry = Object.create( this.constructor.prototype );
+ this.constructor.apply( geometry, values );
+ return geometry;
+
+ }
+
+ return new this.constructor().copy( this );
+ */
+
+ return new BufferGeometry().copy( this );
+
+ },
+
+ copy: function ( source ) {
+
+ var name, i, l;
+
+ // reset
+
+ this.index = null;
+ this.attributes = {};
+ this.morphAttributes = {};
+ this.groups = [];
+ this.boundingBox = null;
+ this.boundingSphere = null;
+
+ // name
+
+ this.name = source.name;
+
+ // index
+
+ var index = source.index;
+
+ if ( index !== null ) {
+
+ this.setIndex( index.clone() );
+
+ }
+
+ // attributes
+
+ var attributes = source.attributes;
+
+ for ( name in attributes ) {
+
+ var attribute = attributes[ name ];
+ this.addAttribute( name, attribute.clone() );
+
+ }
+
+ // morph attributes
+
+ var morphAttributes = source.morphAttributes;
+
+ for ( name in morphAttributes ) {
+
+ var array = [];
+ var morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes
+
+ for ( i = 0, l = morphAttribute.length; i < l; i ++ ) {
+
+ array.push( morphAttribute[ i ].clone() );
+
+ }
+
+ this.morphAttributes[ name ] = array;
+
+ }
+
+ // groups
+
+ var groups = source.groups;
+
+ for ( i = 0, l = groups.length; i < l; i ++ ) {
+
+ var group = groups[ i ];
+ this.addGroup( group.start, group.count, group.materialIndex );
+
+ }
+
+ // bounding box
+
+ var boundingBox = source.boundingBox;
+
+ if ( boundingBox !== null ) {
+
+ this.boundingBox = boundingBox.clone();
+
+ }
+
+ // bounding sphere
+
+ var boundingSphere = source.boundingSphere;
+
+ if ( boundingSphere !== null ) {
+
+ this.boundingSphere = boundingSphere.clone();
+
+ }
+
+ // draw range
+
+ this.drawRange.start = source.drawRange.start;
+ this.drawRange.count = source.drawRange.count;
+
+ // user data
+
+ this.userData = source.userData;
+
+ return this;
+
+ },
+
+ dispose: function () {
+
+ this.dispatchEvent( { type: 'dispose' } );
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author alteredq / http://alteredqualia.com/
+ * @author mikael emtinger / http://gomo.se/
+ * @author jonobr1 / http://jonobr1.com/
+ */
+
+ var _inverseMatrix = new Matrix4();
+ var _ray = new Ray();
+ var _sphere = new Sphere();
+
+ var _vA = new Vector3();
+ var _vB = new Vector3();
+ var _vC = new Vector3();
+
+ var _tempA = new Vector3();
+ var _tempB = new Vector3();
+ var _tempC = new Vector3();
+
+ var _morphA = new Vector3();
+ var _morphB = new Vector3();
+ var _morphC = new Vector3();
+
+ var _uvA = new Vector2();
+ var _uvB = new Vector2();
+ var _uvC = new Vector2();
+
+ var _intersectionPoint = new Vector3();
+ var _intersectionPointWorld = new Vector3();
+
+ function Mesh( geometry, material ) {
+
+ Object3D.call( this );
+
+ this.type = 'Mesh';
+
+ this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
+ this.material = material !== undefined ? material : new MeshBasicMaterial( { color: Math.random() * 0xffffff } );
+
+ this.drawMode = TrianglesDrawMode;
+
+ this.updateMorphTargets();
+
+ }
+
+ Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
+
+ constructor: Mesh,
+
+ isMesh: true,
+
+ setDrawMode: function ( value ) {
+
+ this.drawMode = value;
+
+ },
+
+ copy: function ( source ) {
+
+ Object3D.prototype.copy.call( this, source );
+
+ this.drawMode = source.drawMode;
+
+ if ( source.morphTargetInfluences !== undefined ) {
+
+ this.morphTargetInfluences = source.morphTargetInfluences.slice();
+
+ }
+
+ if ( source.morphTargetDictionary !== undefined ) {
+
+ this.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );
+
+ }
+
+ return this;
+
+ },
+
+ updateMorphTargets: function () {
+
+ var geometry = this.geometry;
+ var m, ml, name;
+
+ if ( geometry.isBufferGeometry ) {
+
+ var morphAttributes = geometry.morphAttributes;
+ var keys = Object.keys( morphAttributes );
+
+ if ( keys.length > 0 ) {
+
+ var morphAttribute = morphAttributes[ keys[ 0 ] ];
+
+ if ( morphAttribute !== undefined ) {
+
+ this.morphTargetInfluences = [];
+ this.morphTargetDictionary = {};
+
+ for ( m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
+
+ name = morphAttribute[ m ].name || String( m );
+
+ this.morphTargetInfluences.push( 0 );
+ this.morphTargetDictionary[ name ] = m;
+
+ }
+
+ }
+
+ }
+
+ } else {
+
+ var morphTargets = geometry.morphTargets;
+
+ if ( morphTargets !== undefined && morphTargets.length > 0 ) {
+
+ console.error( 'THREE.Mesh.updateMorphTargets() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );
+
+ }
+
+ }
+
+ },
+
+ raycast: function ( raycaster, intersects ) {
+
+ var geometry = this.geometry;
+ var material = this.material;
+ var matrixWorld = this.matrixWorld;
+
+ if ( material === undefined ) { return; }
+
+ // Checking boundingSphere distance to ray
+
+ if ( geometry.boundingSphere === null ) { geometry.computeBoundingSphere(); }
+
+ _sphere.copy( geometry.boundingSphere );
+ _sphere.applyMatrix4( matrixWorld );
+
+ if ( raycaster.ray.intersectsSphere( _sphere ) === false ) { return; }
+
+ //
+
+ _inverseMatrix.getInverse( matrixWorld );
+ _ray.copy( raycaster.ray ).applyMatrix4( _inverseMatrix );
+
+ // Check boundingBox before continuing
+
+ if ( geometry.boundingBox !== null ) {
+
+ if ( _ray.intersectsBox( geometry.boundingBox ) === false ) { return; }
+
+ }
+
+ var intersection;
+
+ if ( geometry.isBufferGeometry ) {
+
+ var a, b, c;
+ var index = geometry.index;
+ var position = geometry.attributes.position;
+ var morphPosition = geometry.morphAttributes.position;
+ var uv = geometry.attributes.uv;
+ var uv2 = geometry.attributes.uv2;
+ var groups = geometry.groups;
+ var drawRange = geometry.drawRange;
+ var i, j, il, jl;
+ var group, groupMaterial;
+ var start, end;
+
+ if ( index !== null ) {
+
+ // indexed buffer geometry
+
+ if ( Array.isArray( material ) ) {
+
+ for ( i = 0, il = groups.length; i < il; i ++ ) {
+
+ group = groups[ i ];
+ groupMaterial = material[ group.materialIndex ];
+
+ start = Math.max( group.start, drawRange.start );
+ end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );
+
+ for ( j = start, jl = end; j < jl; j += 3 ) {
+
+ a = index.getX( j );
+ b = index.getX( j + 1 );
+ c = index.getX( j + 2 );
+
+ intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray, position, morphPosition, uv, uv2, a, b, c );
+
+ if ( intersection ) {
+
+ intersection.faceIndex = Math.floor( j / 3 ); // triangle number in indexed buffer semantics
+ intersection.face.materialIndex = group.materialIndex;
+ intersects.push( intersection );
+
+ }
+
+ }
+
+ }
+
+ } else {
+
+ start = Math.max( 0, drawRange.start );
+ end = Math.min( index.count, ( drawRange.start + drawRange.count ) );
+
+ for ( i = start, il = end; i < il; i += 3 ) {
+
+ a = index.getX( i );
+ b = index.getX( i + 1 );
+ c = index.getX( i + 2 );
+
+ intersection = checkBufferGeometryIntersection( this, material, raycaster, _ray, position, morphPosition, uv, uv2, a, b, c );
+
+ if ( intersection ) {
+
+ intersection.faceIndex = Math.floor( i / 3 ); // triangle number in indexed buffer semantics
+ intersects.push( intersection );
+
+ }
+
+ }
+
+ }
+
+ } else if ( position !== undefined ) {
+
+ // non-indexed buffer geometry
+
+ if ( Array.isArray( material ) ) {
+
+ for ( i = 0, il = groups.length; i < il; i ++ ) {
+
+ group = groups[ i ];
+ groupMaterial = material[ group.materialIndex ];
+
+ start = Math.max( group.start, drawRange.start );
+ end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );
+
+ for ( j = start, jl = end; j < jl; j += 3 ) {
+
+ a = j;
+ b = j + 1;
+ c = j + 2;
+
+ intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray, position, morphPosition, uv, uv2, a, b, c );
+
+ if ( intersection ) {
+
+ intersection.faceIndex = Math.floor( j / 3 ); // triangle number in non-indexed buffer semantics
+ intersection.face.materialIndex = group.materialIndex;
+ intersects.push( intersection );
+
+ }
+
+ }
+
+ }
+
+ } else {
+
+ start = Math.max( 0, drawRange.start );
+ end = Math.min( position.count, ( drawRange.start + drawRange.count ) );
+
+ for ( i = start, il = end; i < il; i += 3 ) {
+
+ a = i;
+ b = i + 1;
+ c = i + 2;
+
+ intersection = checkBufferGeometryIntersection( this, material, raycaster, _ray, position, morphPosition, uv, uv2, a, b, c );
+
+ if ( intersection ) {
+
+ intersection.faceIndex = Math.floor( i / 3 ); // triangle number in non-indexed buffer semantics
+ intersects.push( intersection );
+
+ }
+
+ }
+
+ }
+
+ }
+
+ } else if ( geometry.isGeometry ) {
+
+ var fvA, fvB, fvC;
+ var isMultiMaterial = Array.isArray( material );
+
+ var vertices = geometry.vertices;
+ var faces = geometry.faces;
+ var uvs;
+
+ var faceVertexUvs = geometry.faceVertexUvs[ 0 ];
+ if ( faceVertexUvs.length > 0 ) { uvs = faceVertexUvs; }
+
+ for ( var f = 0, fl = faces.length; f < fl; f ++ ) {
+
+ var face = faces[ f ];
+ var faceMaterial = isMultiMaterial ? material[ face.materialIndex ] : material;
+
+ if ( faceMaterial === undefined ) { continue; }
+
+ fvA = vertices[ face.a ];
+ fvB = vertices[ face.b ];
+ fvC = vertices[ face.c ];
+
+ intersection = checkIntersection( this, faceMaterial, raycaster, _ray, fvA, fvB, fvC, _intersectionPoint );
+
+ if ( intersection ) {
+
+ if ( uvs && uvs[ f ] ) {
+
+ var uvs_f = uvs[ f ];
+ _uvA.copy( uvs_f[ 0 ] );
+ _uvB.copy( uvs_f[ 1 ] );
+ _uvC.copy( uvs_f[ 2 ] );
+
+ intersection.uv = Triangle.getUV( _intersectionPoint, fvA, fvB, fvC, _uvA, _uvB, _uvC, new Vector2() );
+
+ }
+
+ intersection.face = face;
+ intersection.faceIndex = f;
+ intersects.push( intersection );
+
+ }
+
+ }
+
+ }
+
+ },
+
+ clone: function () {
+
+ return new this.constructor( this.geometry, this.material ).copy( this );
+
+ }
+
+ } );
+
+ function checkIntersection( object, material, raycaster, ray, pA, pB, pC, point ) {
+
+ var intersect;
+
+ if ( material.side === BackSide ) {
+
+ intersect = ray.intersectTriangle( pC, pB, pA, true, point );
+
+ } else {
+
+ intersect = ray.intersectTriangle( pA, pB, pC, material.side !== DoubleSide, point );
+
+ }
+
+ if ( intersect === null ) { return null; }
+
+ _intersectionPointWorld.copy( point );
+ _intersectionPointWorld.applyMatrix4( object.matrixWorld );
+
+ var distance = raycaster.ray.origin.distanceTo( _intersectionPointWorld );
+
+ if ( distance < raycaster.near || distance > raycaster.far ) { return null; }
+
+ return {
+ distance: distance,
+ point: _intersectionPointWorld.clone(),
+ object: object
+ };
+
+ }
+
+ function checkBufferGeometryIntersection( object, material, raycaster, ray, position, morphPosition, uv, uv2, a, b, c ) {
+
+ _vA.fromBufferAttribute( position, a );
+ _vB.fromBufferAttribute( position, b );
+ _vC.fromBufferAttribute( position, c );
+
+ var morphInfluences = object.morphTargetInfluences;
+
+ if ( material.morphTargets && morphPosition && morphInfluences ) {
+
+ _morphA.set( 0, 0, 0 );
+ _morphB.set( 0, 0, 0 );
+ _morphC.set( 0, 0, 0 );
+
+ for ( var i = 0, il = morphPosition.length; i < il; i ++ ) {
+
+ var influence = morphInfluences[ i ];
+ var morphAttribute = morphPosition[ i ];
+
+ if ( influence === 0 ) { continue; }
+
+ _tempA.fromBufferAttribute( morphAttribute, a );
+ _tempB.fromBufferAttribute( morphAttribute, b );
+ _tempC.fromBufferAttribute( morphAttribute, c );
+
+ _morphA.addScaledVector( _tempA.sub( _vA ), influence );
+ _morphB.addScaledVector( _tempB.sub( _vB ), influence );
+ _morphC.addScaledVector( _tempC.sub( _vC ), influence );
+
+ }
+
+ _vA.add( _morphA );
+ _vB.add( _morphB );
+ _vC.add( _morphC );
+
+ }
+
+ var intersection = checkIntersection( object, material, raycaster, ray, _vA, _vB, _vC, _intersectionPoint );
+
+ if ( intersection ) {
+
+ if ( uv ) {
+
+ _uvA.fromBufferAttribute( uv, a );
+ _uvB.fromBufferAttribute( uv, b );
+ _uvC.fromBufferAttribute( uv, c );
+
+ intersection.uv = Triangle.getUV( _intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() );
+
+ }
+
+ if ( uv2 ) {
+
+ _uvA.fromBufferAttribute( uv2, a );
+ _uvB.fromBufferAttribute( uv2, b );
+ _uvC.fromBufferAttribute( uv2, c );
+
+ intersection.uv2 = Triangle.getUV( _intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() );
+
+ }
+
+ var face = new Face3( a, b, c );
+ Triangle.getNormal( _vA, _vB, _vC, face.normal );
+
+ intersection.face = face;
+
+ }
+
+ return intersection;
+
+ }
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author kile / http://kile.stravaganza.org/
+ * @author alteredq / http://alteredqualia.com/
+ * @author mikael emtinger / http://gomo.se/
+ * @author zz85 / http://www.lab4games.net/zz85/blog
+ * @author bhouston / http://clara.io
+ */
+
+ var _geometryId = 0; // Geometry uses even numbers as Id
+ var _m1$3 = new Matrix4();
+ var _obj$1 = new Object3D();
+ var _offset$1 = new Vector3();
+
+ function Geometry() {
+
+ Object.defineProperty( this, 'id', { value: _geometryId += 2 } );
+
+ this.uuid = _Math.generateUUID();
+
+ this.name = '';
+ this.type = 'Geometry';
+
+ this.vertices = [];
+ this.colors = [];
+ this.faces = [];
+ this.faceVertexUvs = [[]];
+
+ this.morphTargets = [];
+ this.morphNormals = [];
+
+ this.skinWeights = [];
+ this.skinIndices = [];
+
+ this.lineDistances = [];
+
+ this.boundingBox = null;
+ this.boundingSphere = null;
+
+ // update flags
+
+ this.elementsNeedUpdate = false;
+ this.verticesNeedUpdate = false;
+ this.uvsNeedUpdate = false;
+ this.normalsNeedUpdate = false;
+ this.colorsNeedUpdate = false;
+ this.lineDistancesNeedUpdate = false;
+ this.groupsNeedUpdate = false;
+
+ }
+
+ Geometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+
+ constructor: Geometry,
+
+ isGeometry: true,
+
+ applyMatrix: function ( matrix ) {
+
+ var normalMatrix = new Matrix3().getNormalMatrix( matrix );
+
+ for ( var i = 0, il = this.vertices.length; i < il; i ++ ) {
+
+ var vertex = this.vertices[ i ];
+ vertex.applyMatrix4( matrix );
+
+ }
+
+ for ( var i = 0, il = this.faces.length; i < il; i ++ ) {
+
+ var face = this.faces[ i ];
+ face.normal.applyMatrix3( normalMatrix ).normalize();
+
+ for ( var j = 0, jl = face.vertexNormals.length; j < jl; j ++ ) {
+
+ face.vertexNormals[ j ].applyMatrix3( normalMatrix ).normalize();
+
+ }
+
+ }
+
+ if ( this.boundingBox !== null ) {
+
+ this.computeBoundingBox();
+
+ }
+
+ if ( this.boundingSphere !== null ) {
+
+ this.computeBoundingSphere();
+
+ }
+
+ this.verticesNeedUpdate = true;
+ this.normalsNeedUpdate = true;
+
+ return this;
+
+ },
+
+ rotateX: function ( angle ) {
+
+ // rotate geometry around world x-axis
+
+ _m1$3.makeRotationX( angle );
+
+ this.applyMatrix( _m1$3 );
+
+ return this;
+
+ },
+
+ rotateY: function ( angle ) {
+
+ // rotate geometry around world y-axis
+
+ _m1$3.makeRotationY( angle );
+
+ this.applyMatrix( _m1$3 );
+
+ return this;
+
+ },
+
+ rotateZ: function ( angle ) {
+
+ // rotate geometry around world z-axis
+
+ _m1$3.makeRotationZ( angle );
+
+ this.applyMatrix( _m1$3 );
+
+ return this;
+
+ },
+
+ translate: function ( x, y, z ) {
+
+ // translate geometry
+
+ _m1$3.makeTranslation( x, y, z );
+
+ this.applyMatrix( _m1$3 );
+
+ return this;
+
+ },
+
+ scale: function ( x, y, z ) {
+
+ // scale geometry
+
+ _m1$3.makeScale( x, y, z );
+
+ this.applyMatrix( _m1$3 );
+
+ return this;
+
+ },
+
+ lookAt: function ( vector ) {
+
+ _obj$1.lookAt( vector );
+
+ _obj$1.updateMatrix();
+
+ this.applyMatrix( _obj$1.matrix );
+
+ return this;
+
+ },
+
+ fromBufferGeometry: function ( geometry ) {
+
+ var scope = this;
+
+ var indices = geometry.index !== null ? geometry.index.array : undefined;
+ var attributes = geometry.attributes;
+
+ if ( attributes.position === undefined ) {
+
+ console.error( 'THREE.Geometry.fromBufferGeometry(): Position attribute required for conversion.' );
+ return this;
+
+ }
+
+ var positions = attributes.position.array;
+ var normals = attributes.normal !== undefined ? attributes.normal.array : undefined;
+ var colors = attributes.color !== undefined ? attributes.color.array : undefined;
+ var uvs = attributes.uv !== undefined ? attributes.uv.array : undefined;
+ var uvs2 = attributes.uv2 !== undefined ? attributes.uv2.array : undefined;
+
+ if ( uvs2 !== undefined ) { this.faceVertexUvs[ 1 ] = []; }
+
+ for ( var i = 0; i < positions.length; i += 3 ) {
+
+ scope.vertices.push( new Vector3().fromArray( positions, i ) );
+
+ if ( colors !== undefined ) {
+
+ scope.colors.push( new Color().fromArray( colors, i ) );
+
+ }
+
+ }
+
+ function addFace( a, b, c, materialIndex ) {
+
+ var vertexColors = ( colors === undefined ) ? [] : [
+ scope.colors[ a ].clone(),
+ scope.colors[ b ].clone(),
+ scope.colors[ c ].clone() ];
+
+ var vertexNormals = ( normals === undefined ) ? [] : [
+ new Vector3().fromArray( normals, a * 3 ),
+ new Vector3().fromArray( normals, b * 3 ),
+ new Vector3().fromArray( normals, c * 3 )
+ ];
+
+ var face = new Face3( a, b, c, vertexNormals, vertexColors, materialIndex );
+
+ scope.faces.push( face );
+
+ if ( uvs !== undefined ) {
+
+ scope.faceVertexUvs[ 0 ].push( [
+ new Vector2().fromArray( uvs, a * 2 ),
+ new Vector2().fromArray( uvs, b * 2 ),
+ new Vector2().fromArray( uvs, c * 2 )
+ ] );
+
+ }
+
+ if ( uvs2 !== undefined ) {
+
+ scope.faceVertexUvs[ 1 ].push( [
+ new Vector2().fromArray( uvs2, a * 2 ),
+ new Vector2().fromArray( uvs2, b * 2 ),
+ new Vector2().fromArray( uvs2, c * 2 )
+ ] );
+
+ }
+
+ }
+
+ var groups = geometry.groups;
+
+ if ( groups.length > 0 ) {
+
+ for ( var i = 0; i < groups.length; i ++ ) {
+
+ var group = groups[ i ];
+
+ var start = group.start;
+ var count = group.count;
+
+ for ( var j = start, jl = start + count; j < jl; j += 3 ) {
+
+ if ( indices !== undefined ) {
+
+ addFace( indices[ j ], indices[ j + 1 ], indices[ j + 2 ], group.materialIndex );
+
+ } else {
+
+ addFace( j, j + 1, j + 2, group.materialIndex );
+
+ }
+
+ }
+
+ }
+
+ } else {
+
+ if ( indices !== undefined ) {
+
+ for ( var i = 0; i < indices.length; i += 3 ) {
+
+ addFace( indices[ i ], indices[ i + 1 ], indices[ i + 2 ] );
+
+ }
+
+ } else {
+
+ for ( var i = 0; i < positions.length / 3; i += 3 ) {
+
+ addFace( i, i + 1, i + 2 );
+
+ }
+
+ }
+
+ }
+
+ this.computeFaceNormals();
+
+ if ( geometry.boundingBox !== null ) {
+
+ this.boundingBox = geometry.boundingBox.clone();
+
+ }
+
+ if ( geometry.boundingSphere !== null ) {
+
+ this.boundingSphere = geometry.boundingSphere.clone();
+
+ }
+
+ return this;
+
+ },
+
+ center: function () {
+
+ this.computeBoundingBox();
+
+ this.boundingBox.getCenter( _offset$1 ).negate();
+
+ this.translate( _offset$1.x, _offset$1.y, _offset$1.z );
+
+ return this;
+
+ },
+
+ normalize: function () {
+
+ this.computeBoundingSphere();
+
+ var center = this.boundingSphere.center;
+ var radius = this.boundingSphere.radius;
+
+ var s = radius === 0 ? 1 : 1.0 / radius;
+
+ var matrix = new Matrix4();
+ matrix.set(
+ s, 0, 0, - s * center.x,
+ 0, s, 0, - s * center.y,
+ 0, 0, s, - s * center.z,
+ 0, 0, 0, 1
+ );
+
+ this.applyMatrix( matrix );
+
+ return this;
+
+ },
+
+ computeFaceNormals: function () {
+
+ var cb = new Vector3(), ab = new Vector3();
+
+ for ( var f = 0, fl = this.faces.length; f < fl; f ++ ) {
+
+ var face = this.faces[ f ];
+
+ var vA = this.vertices[ face.a ];
+ var vB = this.vertices[ face.b ];
+ var vC = this.vertices[ face.c ];
+
+ cb.subVectors( vC, vB );
+ ab.subVectors( vA, vB );
+ cb.cross( ab );
+
+ cb.normalize();
+
+ face.normal.copy( cb );
+
+ }
+
+ },
+
+ computeVertexNormals: function ( areaWeighted ) {
+
+ if ( areaWeighted === undefined ) { areaWeighted = true; }
+
+ var v, vl, f, fl, face, vertices;
+
+ vertices = new Array( this.vertices.length );
+
+ for ( v = 0, vl = this.vertices.length; v < vl; v ++ ) {
+
+ vertices[ v ] = new Vector3();
+
+ }
+
+ if ( areaWeighted ) {
+
+ // vertex normals weighted by triangle areas
+ // http://www.iquilezles.org/www/articles/normals/normals.htm
+
+ var vA, vB, vC;
+ var cb = new Vector3(), ab = new Vector3();
+
+ for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+
+ face = this.faces[ f ];
+
+ vA = this.vertices[ face.a ];
+ vB = this.vertices[ face.b ];
+ vC = this.vertices[ face.c ];
+
+ cb.subVectors( vC, vB );
+ ab.subVectors( vA, vB );
+ cb.cross( ab );
+
+ vertices[ face.a ].add( cb );
+ vertices[ face.b ].add( cb );
+ vertices[ face.c ].add( cb );
+
+ }
+
+ } else {
+
+ this.computeFaceNormals();
+
+ for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+
+ face = this.faces[ f ];
+
+ vertices[ face.a ].add( face.normal );
+ vertices[ face.b ].add( face.normal );
+ vertices[ face.c ].add( face.normal );
+
+ }
+
+ }
+
+ for ( v = 0, vl = this.vertices.length; v < vl; v ++ ) {
+
+ vertices[ v ].normalize();
+
+ }
+
+ for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+
+ face = this.faces[ f ];
+
+ var vertexNormals = face.vertexNormals;
+
+ if ( vertexNormals.length === 3 ) {
+
+ vertexNormals[ 0 ].copy( vertices[ face.a ] );
+ vertexNormals[ 1 ].copy( vertices[ face.b ] );
+ vertexNormals[ 2 ].copy( vertices[ face.c ] );
+
+ } else {
+
+ vertexNormals[ 0 ] = vertices[ face.a ].clone();
+ vertexNormals[ 1 ] = vertices[ face.b ].clone();
+ vertexNormals[ 2 ] = vertices[ face.c ].clone();
+
+ }
+
+ }
+
+ if ( this.faces.length > 0 ) {
+
+ this.normalsNeedUpdate = true;
+
+ }
+
+ },
+
+ computeFlatVertexNormals: function () {
+
+ var f, fl, face;
+
+ this.computeFaceNormals();
+
+ for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+
+ face = this.faces[ f ];
+
+ var vertexNormals = face.vertexNormals;
+
+ if ( vertexNormals.length === 3 ) {
+
+ vertexNormals[ 0 ].copy( face.normal );
+ vertexNormals[ 1 ].copy( face.normal );
+ vertexNormals[ 2 ].copy( face.normal );
+
+ } else {
+
+ vertexNormals[ 0 ] = face.normal.clone();
+ vertexNormals[ 1 ] = face.normal.clone();
+ vertexNormals[ 2 ] = face.normal.clone();
+
+ }
+
+ }
+
+ if ( this.faces.length > 0 ) {
+
+ this.normalsNeedUpdate = true;
+
+ }
+
+ },
+
+ computeMorphNormals: function () {
+
+ var i, il, f, fl, face;
+
+ // save original normals
+ // - create temp variables on first access
+ // otherwise just copy (for faster repeated calls)
+
+ for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+
+ face = this.faces[ f ];
+
+ if ( ! face.__originalFaceNormal ) {
+
+ face.__originalFaceNormal = face.normal.clone();
+
+ } else {
+
+ face.__originalFaceNormal.copy( face.normal );
+
+ }
+
+ if ( ! face.__originalVertexNormals ) { face.__originalVertexNormals = []; }
+
+ for ( i = 0, il = face.vertexNormals.length; i < il; i ++ ) {
+
+ if ( ! face.__originalVertexNormals[ i ] ) {
+
+ face.__originalVertexNormals[ i ] = face.vertexNormals[ i ].clone();
+
+ } else {
+
+ face.__originalVertexNormals[ i ].copy( face.vertexNormals[ i ] );
+
+ }
+
+ }
+
+ }
+
+ // use temp geometry to compute face and vertex normals for each morph
+
+ var tmpGeo = new Geometry();
+ tmpGeo.faces = this.faces;
+
+ for ( i = 0, il = this.morphTargets.length; i < il; i ++ ) {
+
+ // create on first access
+
+ if ( ! this.morphNormals[ i ] ) {
+
+ this.morphNormals[ i ] = {};
+ this.morphNormals[ i ].faceNormals = [];
+ this.morphNormals[ i ].vertexNormals = [];
+
+ var dstNormalsFace = this.morphNormals[ i ].faceNormals;
+ var dstNormalsVertex = this.morphNormals[ i ].vertexNormals;
+
+ var faceNormal, vertexNormals;
+
+ for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+
+ faceNormal = new Vector3();
+ vertexNormals = { a: new Vector3(), b: new Vector3(), c: new Vector3() };
+
+ dstNormalsFace.push( faceNormal );
+ dstNormalsVertex.push( vertexNormals );
+
+ }
+
+ }
+
+ var morphNormals = this.morphNormals[ i ];
+
+ // set vertices to morph target
+
+ tmpGeo.vertices = this.morphTargets[ i ].vertices;
+
+ // compute morph normals
+
+ tmpGeo.computeFaceNormals();
+ tmpGeo.computeVertexNormals();
+
+ // store morph normals
+
+ var faceNormal, vertexNormals;
+
+ for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+
+ face = this.faces[ f ];
+
+ faceNormal = morphNormals.faceNormals[ f ];
+ vertexNormals = morphNormals.vertexNormals[ f ];
+
+ faceNormal.copy( face.normal );
+
+ vertexNormals.a.copy( face.vertexNormals[ 0 ] );
+ vertexNormals.b.copy( face.vertexNormals[ 1 ] );
+ vertexNormals.c.copy( face.vertexNormals[ 2 ] );
+
+ }
+
+ }
+
+ // restore original normals
+
+ for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+
+ face = this.faces[ f ];
+
+ face.normal = face.__originalFaceNormal;
+ face.vertexNormals = face.__originalVertexNormals;
+
+ }
+
+ },
+
+ computeBoundingBox: function () {
+
+ if ( this.boundingBox === null ) {
+
+ this.boundingBox = new Box3();
+
+ }
+
+ this.boundingBox.setFromPoints( this.vertices );
+
+ },
+
+ computeBoundingSphere: function () {
+
+ if ( this.boundingSphere === null ) {
+
+ this.boundingSphere = new Sphere();
+
+ }
+
+ this.boundingSphere.setFromPoints( this.vertices );
+
+ },
+
+ merge: function ( geometry, matrix, materialIndexOffset ) {
+
+ if ( ! ( geometry && geometry.isGeometry ) ) {
+
+ console.error( 'THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.', geometry );
+ return;
+
+ }
+
+ var normalMatrix,
+ vertexOffset = this.vertices.length,
+ vertices1 = this.vertices,
+ vertices2 = geometry.vertices,
+ faces1 = this.faces,
+ faces2 = geometry.faces,
+ colors1 = this.colors,
+ colors2 = geometry.colors;
+
+ if ( materialIndexOffset === undefined ) { materialIndexOffset = 0; }
+
+ if ( matrix !== undefined ) {
+
+ normalMatrix = new Matrix3().getNormalMatrix( matrix );
+
+ }
+
+ // vertices
+
+ for ( var i = 0, il = vertices2.length; i < il; i ++ ) {
+
+ var vertex = vertices2[ i ];
+
+ var vertexCopy = vertex.clone();
+
+ if ( matrix !== undefined ) { vertexCopy.applyMatrix4( matrix ); }
+
+ vertices1.push( vertexCopy );
+
+ }
+
+ // colors
+
+ for ( var i = 0, il = colors2.length; i < il; i ++ ) {
+
+ colors1.push( colors2[ i ].clone() );
+
+ }
+
+ // faces
+
+ for ( i = 0, il = faces2.length; i < il; i ++ ) {
+
+ var face = faces2[ i ], faceCopy, normal, color,
+ faceVertexNormals = face.vertexNormals,
+ faceVertexColors = face.vertexColors;
+
+ faceCopy = new Face3( face.a + vertexOffset, face.b + vertexOffset, face.c + vertexOffset );
+ faceCopy.normal.copy( face.normal );
+
+ if ( normalMatrix !== undefined ) {
+
+ faceCopy.normal.applyMatrix3( normalMatrix ).normalize();
+
+ }
+
+ for ( var j = 0, jl = faceVertexNormals.length; j < jl; j ++ ) {
+
+ normal = faceVertexNormals[ j ].clone();
+
+ if ( normalMatrix !== undefined ) {
+
+ normal.applyMatrix3( normalMatrix ).normalize();
+
+ }
+
+ faceCopy.vertexNormals.push( normal );
+
+ }
+
+ faceCopy.color.copy( face.color );
+
+ for ( var j = 0, jl = faceVertexColors.length; j < jl; j ++ ) {
+
+ color = faceVertexColors[ j ];
+ faceCopy.vertexColors.push( color.clone() );
+
+ }
+
+ faceCopy.materialIndex = face.materialIndex + materialIndexOffset;
+
+ faces1.push( faceCopy );
+
+ }
+
+ // uvs
+
+ for ( var i = 0, il = geometry.faceVertexUvs.length; i < il; i ++ ) {
+
+ var faceVertexUvs2 = geometry.faceVertexUvs[ i ];
+
+ if ( this.faceVertexUvs[ i ] === undefined ) { this.faceVertexUvs[ i ] = []; }
+
+ for ( var j = 0, jl = faceVertexUvs2.length; j < jl; j ++ ) {
+
+ var uvs2 = faceVertexUvs2[ j ], uvsCopy = [];
+
+ for ( var k = 0, kl = uvs2.length; k < kl; k ++ ) {
+
+ uvsCopy.push( uvs2[ k ].clone() );
+
+ }
+
+ this.faceVertexUvs[ i ].push( uvsCopy );
+
+ }
+
+ }
+
+ },
+
+ mergeMesh: function ( mesh ) {
+
+ if ( ! ( mesh && mesh.isMesh ) ) {
+
+ console.error( 'THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.', mesh );
+ return;
+
+ }
+
+ if ( mesh.matrixAutoUpdate ) { mesh.updateMatrix(); }
+
+ this.merge( mesh.geometry, mesh.matrix );
+
+ },
+
+ /*
+ * Checks for duplicate vertices with hashmap.
+ * Duplicated vertices are removed
+ * and faces' vertices are updated.
+ */
+
+ mergeVertices: function () {
+
+ var verticesMap = {}; // Hashmap for looking up vertices by position coordinates (and making sure they are unique)
+ var unique = [], changes = [];
+
+ var v, key;
+ var precisionPoints = 4; // number of decimal points, e.g. 4 for epsilon of 0.0001
+ var precision = Math.pow( 10, precisionPoints );
+ var i, il, face;
+ var indices, j, jl;
+
+ for ( i = 0, il = this.vertices.length; i < il; i ++ ) {
+
+ v = this.vertices[ i ];
+ key = Math.round( v.x * precision ) + '_' + Math.round( v.y * precision ) + '_' + Math.round( v.z * precision );
+
+ if ( verticesMap[ key ] === undefined ) {
+
+ verticesMap[ key ] = i;
+ unique.push( this.vertices[ i ] );
+ changes[ i ] = unique.length - 1;
+
+ } else {
+
+ //console.log('Duplicate vertex found. ', i, ' could be using ', verticesMap[key]);
+ changes[ i ] = changes[ verticesMap[ key ] ];
+
+ }
+
+ }
+
+
+ // if faces are completely degenerate after merging vertices, we
+ // have to remove them from the geometry.
+ var faceIndicesToRemove = [];
+
+ for ( i = 0, il = this.faces.length; i < il; i ++ ) {
+
+ face = this.faces[ i ];
+
+ face.a = changes[ face.a ];
+ face.b = changes[ face.b ];
+ face.c = changes[ face.c ];
+
+ indices = [ face.a, face.b, face.c ];
+
+ // if any duplicate vertices are found in a Face3
+ // we have to remove the face as nothing can be saved
+ for ( var n = 0; n < 3; n ++ ) {
+
+ if ( indices[ n ] === indices[ ( n + 1 ) % 3 ] ) {
+
+ faceIndicesToRemove.push( i );
+ break;
+
+ }
+
+ }
+
+ }
+
+ for ( i = faceIndicesToRemove.length - 1; i >= 0; i -- ) {
+
+ var idx = faceIndicesToRemove[ i ];
+
+ this.faces.splice( idx, 1 );
+
+ for ( j = 0, jl = this.faceVertexUvs.length; j < jl; j ++ ) {
+
+ this.faceVertexUvs[ j ].splice( idx, 1 );
+
+ }
+
+ }
+
+ // Use unique set of vertices
+
+ var diff = this.vertices.length - unique.length;
+ this.vertices = unique;
+ return diff;
+
+ },
+
+ setFromPoints: function ( points ) {
+
+ this.vertices = [];
+
+ for ( var i = 0, l = points.length; i < l; i ++ ) {
+
+ var point = points[ i ];
+ this.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );
+
+ }
+
+ return this;
+
+ },
+
+ sortFacesByMaterialIndex: function () {
+
+ var faces = this.faces;
+ var length = faces.length;
+
+ // tag faces
+
+ for ( var i = 0; i < length; i ++ ) {
+
+ faces[ i ]._id = i;
+
+ }
+
+ // sort faces
+
+ function materialIndexSort( a, b ) {
+
+ return a.materialIndex - b.materialIndex;
+
+ }
+
+ faces.sort( materialIndexSort );
+
+ // sort uvs
+
+ var uvs1 = this.faceVertexUvs[ 0 ];
+ var uvs2 = this.faceVertexUvs[ 1 ];
+
+ var newUvs1, newUvs2;
+
+ if ( uvs1 && uvs1.length === length ) { newUvs1 = []; }
+ if ( uvs2 && uvs2.length === length ) { newUvs2 = []; }
+
+ for ( var i = 0; i < length; i ++ ) {
+
+ var id = faces[ i ]._id;
+
+ if ( newUvs1 ) { newUvs1.push( uvs1[ id ] ); }
+ if ( newUvs2 ) { newUvs2.push( uvs2[ id ] ); }
+
+ }
+
+ if ( newUvs1 ) { this.faceVertexUvs[ 0 ] = newUvs1; }
+ if ( newUvs2 ) { this.faceVertexUvs[ 1 ] = newUvs2; }
+
+ },
+
+ toJSON: function () {
+
+ var data = {
+ metadata: {
+ version: 4.5,
+ type: 'Geometry',
+ generator: 'Geometry.toJSON'
+ }
+ };
+
+ // standard Geometry serialization
+
+ data.uuid = this.uuid;
+ data.type = this.type;
+ if ( this.name !== '' ) { data.name = this.name; }
+
+ if ( this.parameters !== undefined ) {
+
+ var parameters = this.parameters;
+
+ for ( var key in parameters ) {
+
+ if ( parameters[ key ] !== undefined ) { data[ key ] = parameters[ key ]; }
+
+ }
+
+ return data;
+
+ }
+
+ var vertices = [];
+
+ for ( var i = 0; i < this.vertices.length; i ++ ) {
+
+ var vertex = this.vertices[ i ];
+ vertices.push( vertex.x, vertex.y, vertex.z );
+
+ }
+
+ var faces = [];
+ var normals = [];
+ var normalsHash = {};
+ var colors = [];
+ var colorsHash = {};
+ var uvs = [];
+ var uvsHash = {};
+
+ for ( var i = 0; i < this.faces.length; i ++ ) {
+
+ var face = this.faces[ i ];
+
+ var hasMaterial = true;
+ var hasFaceUv = false; // deprecated
+ var hasFaceVertexUv = this.faceVertexUvs[ 0 ][ i ] !== undefined;
+ var hasFaceNormal = face.normal.length() > 0;
+ var hasFaceVertexNormal = face.vertexNormals.length > 0;
+ var hasFaceColor = face.color.r !== 1 || face.color.g !== 1 || face.color.b !== 1;
+ var hasFaceVertexColor = face.vertexColors.length > 0;
+
+ var faceType = 0;
+
+ faceType = setBit( faceType, 0, 0 ); // isQuad
+ faceType = setBit( faceType, 1, hasMaterial );
+ faceType = setBit( faceType, 2, hasFaceUv );
+ faceType = setBit( faceType, 3, hasFaceVertexUv );
+ faceType = setBit( faceType, 4, hasFaceNormal );
+ faceType = setBit( faceType, 5, hasFaceVertexNormal );
+ faceType = setBit( faceType, 6, hasFaceColor );
+ faceType = setBit( faceType, 7, hasFaceVertexColor );
+
+ faces.push( faceType );
+ faces.push( face.a, face.b, face.c );
+ faces.push( face.materialIndex );
+
+ if ( hasFaceVertexUv ) {
+
+ var faceVertexUvs = this.faceVertexUvs[ 0 ][ i ];
+
+ faces.push(
+ getUvIndex( faceVertexUvs[ 0 ] ),
+ getUvIndex( faceVertexUvs[ 1 ] ),
+ getUvIndex( faceVertexUvs[ 2 ] )
+ );
+
+ }
+
+ if ( hasFaceNormal ) {
+
+ faces.push( getNormalIndex( face.normal ) );
+
+ }
+
+ if ( hasFaceVertexNormal ) {
+
+ var vertexNormals = face.vertexNormals;
+
+ faces.push(
+ getNormalIndex( vertexNormals[ 0 ] ),
+ getNormalIndex( vertexNormals[ 1 ] ),
+ getNormalIndex( vertexNormals[ 2 ] )
+ );
+
+ }
+
+ if ( hasFaceColor ) {
+
+ faces.push( getColorIndex( face.color ) );
+
+ }
+
+ if ( hasFaceVertexColor ) {
+
+ var vertexColors = face.vertexColors;
+
+ faces.push(
+ getColorIndex( vertexColors[ 0 ] ),
+ getColorIndex( vertexColors[ 1 ] ),
+ getColorIndex( vertexColors[ 2 ] )
+ );
+
+ }
+
+ }
+
+ function setBit( value, position, enabled ) {
+
+ return enabled ? value | ( 1 << position ) : value & ( ~ ( 1 << position ) );
+
+ }
+
+ function getNormalIndex( normal ) {
+
+ var hash = normal.x.toString() + normal.y.toString() + normal.z.toString();
+
+ if ( normalsHash[ hash ] !== undefined ) {
+
+ return normalsHash[ hash ];
+
+ }
+
+ normalsHash[ hash ] = normals.length / 3;
+ normals.push( normal.x, normal.y, normal.z );
+
+ return normalsHash[ hash ];
+
+ }
+
+ function getColorIndex( color ) {
+
+ var hash = color.r.toString() + color.g.toString() + color.b.toString();
+
+ if ( colorsHash[ hash ] !== undefined ) {
+
+ return colorsHash[ hash ];
+
+ }
+
+ colorsHash[ hash ] = colors.length;
+ colors.push( color.getHex() );
+
+ return colorsHash[ hash ];
+
+ }
+
+ function getUvIndex( uv ) {
+
+ var hash = uv.x.toString() + uv.y.toString();
+
+ if ( uvsHash[ hash ] !== undefined ) {
+
+ return uvsHash[ hash ];
+
+ }
+
+ uvsHash[ hash ] = uvs.length / 2;
+ uvs.push( uv.x, uv.y );
+
+ return uvsHash[ hash ];
+
+ }
+
+ data.data = {};
+
+ data.data.vertices = vertices;
+ data.data.normals = normals;
+ if ( colors.length > 0 ) { data.data.colors = colors; }
+ if ( uvs.length > 0 ) { data.data.uvs = [ uvs ]; } // temporal backward compatibility
+ data.data.faces = faces;
+
+ return data;
+
+ },
+
+ clone: function () {
+
+ /*
+ // Handle primitives
+
+ var parameters = this.parameters;
+
+ if ( parameters !== undefined ) {
+
+ var values = [];
+
+ for ( var key in parameters ) {
+
+ values.push( parameters[ key ] );
+
+ }
+
+ var geometry = Object.create( this.constructor.prototype );
+ this.constructor.apply( geometry, values );
+ return geometry;
+
+ }
+
+ return new this.constructor().copy( this );
+ */
+
+ return new Geometry().copy( this );
+
+ },
+
+ copy: function ( source ) {
+
+ var i, il, j, jl, k, kl;
+
+ // reset
+
+ this.vertices = [];
+ this.colors = [];
+ this.faces = [];
+ this.faceVertexUvs = [[]];
+ this.morphTargets = [];
+ this.morphNormals = [];
+ this.skinWeights = [];
+ this.skinIndices = [];
+ this.lineDistances = [];
+ this.boundingBox = null;
+ this.boundingSphere = null;
+
+ // name
+
+ this.name = source.name;
+
+ // vertices
+
+ var vertices = source.vertices;
+
+ for ( i = 0, il = vertices.length; i < il; i ++ ) {
+
+ this.vertices.push( vertices[ i ].clone() );
+
+ }
+
+ // colors
+
+ var colors = source.colors;
+
+ for ( i = 0, il = colors.length; i < il; i ++ ) {
+
+ this.colors.push( colors[ i ].clone() );
+
+ }
+
+ // faces
+
+ var faces = source.faces;
+
+ for ( i = 0, il = faces.length; i < il; i ++ ) {
+
+ this.faces.push( faces[ i ].clone() );
+
+ }
+
+ // face vertex uvs
+
+ for ( i = 0, il = source.faceVertexUvs.length; i < il; i ++ ) {
+
+ var faceVertexUvs = source.faceVertexUvs[ i ];
+
+ if ( this.faceVertexUvs[ i ] === undefined ) {
+
+ this.faceVertexUvs[ i ] = [];
+
+ }
+
+ for ( j = 0, jl = faceVertexUvs.length; j < jl; j ++ ) {
+
+ var uvs = faceVertexUvs[ j ], uvsCopy = [];
+
+ for ( k = 0, kl = uvs.length; k < kl; k ++ ) {
+
+ var uv = uvs[ k ];
+
+ uvsCopy.push( uv.clone() );
+
+ }
+
+ this.faceVertexUvs[ i ].push( uvsCopy );
+
+ }
+
+ }
+
+ // morph targets
+
+ var morphTargets = source.morphTargets;
+
+ for ( i = 0, il = morphTargets.length; i < il; i ++ ) {
+
+ var morphTarget = {};
+ morphTarget.name = morphTargets[ i ].name;
+
+ // vertices
+
+ if ( morphTargets[ i ].vertices !== undefined ) {
+
+ morphTarget.vertices = [];
+
+ for ( j = 0, jl = morphTargets[ i ].vertices.length; j < jl; j ++ ) {
+
+ morphTarget.vertices.push( morphTargets[ i ].vertices[ j ].clone() );
+
+ }
+
+ }
+
+ // normals
+
+ if ( morphTargets[ i ].normals !== undefined ) {
+
+ morphTarget.normals = [];
+
+ for ( j = 0, jl = morphTargets[ i ].normals.length; j < jl; j ++ ) {
+
+ morphTarget.normals.push( morphTargets[ i ].normals[ j ].clone() );
+
+ }
+
+ }
+
+ this.morphTargets.push( morphTarget );
+
+ }
+
+ // morph normals
+
+ var morphNormals = source.morphNormals;
+
+ for ( i = 0, il = morphNormals.length; i < il; i ++ ) {
+
+ var morphNormal = {};
+
+ // vertex normals
+
+ if ( morphNormals[ i ].vertexNormals !== undefined ) {
+
+ morphNormal.vertexNormals = [];
+
+ for ( j = 0, jl = morphNormals[ i ].vertexNormals.length; j < jl; j ++ ) {
+
+ var srcVertexNormal = morphNormals[ i ].vertexNormals[ j ];
+ var destVertexNormal = {};
+
+ destVertexNormal.a = srcVertexNormal.a.clone();
+ destVertexNormal.b = srcVertexNormal.b.clone();
+ destVertexNormal.c = srcVertexNormal.c.clone();
+
+ morphNormal.vertexNormals.push( destVertexNormal );
+
+ }
+
+ }
+
+ // face normals
+
+ if ( morphNormals[ i ].faceNormals !== undefined ) {
+
+ morphNormal.faceNormals = [];
+
+ for ( j = 0, jl = morphNormals[ i ].faceNormals.length; j < jl; j ++ ) {
+
+ morphNormal.faceNormals.push( morphNormals[ i ].faceNormals[ j ].clone() );
+
+ }
+
+ }
+
+ this.morphNormals.push( morphNormal );
+
+ }
+
+ // skin weights
+
+ var skinWeights = source.skinWeights;
+
+ for ( i = 0, il = skinWeights.length; i < il; i ++ ) {
+
+ this.skinWeights.push( skinWeights[ i ].clone() );
+
+ }
+
+ // skin indices
+
+ var skinIndices = source.skinIndices;
+
+ for ( i = 0, il = skinIndices.length; i < il; i ++ ) {
+
+ this.skinIndices.push( skinIndices[ i ].clone() );
+
+ }
+
+ // line distances
+
+ var lineDistances = source.lineDistances;
+
+ for ( i = 0, il = lineDistances.length; i < il; i ++ ) {
+
+ this.lineDistances.push( lineDistances[ i ] );
+
+ }
+
+ // bounding box
+
+ var boundingBox = source.boundingBox;
+
+ if ( boundingBox !== null ) {
+
+ this.boundingBox = boundingBox.clone();
+
+ }
+
+ // bounding sphere
+
+ var boundingSphere = source.boundingSphere;
+
+ if ( boundingSphere !== null ) {
+
+ this.boundingSphere = boundingSphere.clone();
+
+ }
+
+ // update flags
+
+ this.elementsNeedUpdate = source.elementsNeedUpdate;
+ this.verticesNeedUpdate = source.verticesNeedUpdate;
+ this.uvsNeedUpdate = source.uvsNeedUpdate;
+ this.normalsNeedUpdate = source.normalsNeedUpdate;
+ this.colorsNeedUpdate = source.colorsNeedUpdate;
+ this.lineDistancesNeedUpdate = source.lineDistancesNeedUpdate;
+ this.groupsNeedUpdate = source.groupsNeedUpdate;
+
+ return this;
+
+ },
+
+ dispose: function () {
+
+ this.dispatchEvent( { type: 'dispose' } );
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author Mugen87 / https://github.com/Mugen87
+ */
+
+ // BoxGeometry
+
+ var BoxGeometry = /*@__PURE__*/(function (Geometry) {
+ function BoxGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) {
+
+ Geometry.call(this);
+
+ this.type = 'BoxGeometry';
+
+ this.parameters = {
+ width: width,
+ height: height,
+ depth: depth,
+ widthSegments: widthSegments,
+ heightSegments: heightSegments,
+ depthSegments: depthSegments
+ };
+
+ this.fromBufferGeometry( new BoxBufferGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) );
+ this.mergeVertices();
+
+ }
+
+ if ( Geometry ) BoxGeometry.__proto__ = Geometry;
+ BoxGeometry.prototype = Object.create( Geometry && Geometry.prototype );
+ BoxGeometry.prototype.constructor = BoxGeometry;
+
+ return BoxGeometry;
+ }(Geometry));
+
+ // BoxBufferGeometry
+
+ var BoxBufferGeometry = /*@__PURE__*/(function (BufferGeometry) {
+ function BoxBufferGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) {
+
+ BufferGeometry.call(this);
+
+ this.type = 'BoxBufferGeometry';
+
+ this.parameters = {
+ width: width,
+ height: height,
+ depth: depth,
+ widthSegments: widthSegments,
+ heightSegments: heightSegments,
+ depthSegments: depthSegments
+ };
+
+ var scope = this;
+
+ width = width || 1;
+ height = height || 1;
+ depth = depth || 1;
+
+ // segments
+
+ widthSegments = Math.floor( widthSegments ) || 1;
+ heightSegments = Math.floor( heightSegments ) || 1;
+ depthSegments = Math.floor( depthSegments ) || 1;
+
+ // buffers
+
+ var indices = [];
+ var vertices = [];
+ var normals = [];
+ var uvs = [];
+
+ // helper variables
+
+ var numberOfVertices = 0;
+ var groupStart = 0;
+
+ // build each side of the box geometry
+
+ buildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 ); // px
+ buildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 ); // nx
+ buildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 ); // py
+ buildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 ); // ny
+ buildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 ); // pz
+ buildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 ); // nz
+
+ // build geometry
+
+ this.setIndex( indices );
+ this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+ this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+ this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+ function buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {
+
+ var segmentWidth = width / gridX;
+ var segmentHeight = height / gridY;
+
+ var widthHalf = width / 2;
+ var heightHalf = height / 2;
+ var depthHalf = depth / 2;
+
+ var gridX1 = gridX + 1;
+ var gridY1 = gridY + 1;
+
+ var vertexCounter = 0;
+ var groupCount = 0;
+
+ var ix, iy;
+
+ var vector = new Vector3();
+
+ // generate vertices, normals and uvs
+
+ for ( iy = 0; iy < gridY1; iy ++ ) {
+
+ var y = iy * segmentHeight - heightHalf;
+
+ for ( ix = 0; ix < gridX1; ix ++ ) {
+
+ var x = ix * segmentWidth - widthHalf;
+
+ // set values to correct vector component
+
+ vector[ u ] = x * udir;
+ vector[ v ] = y * vdir;
+ vector[ w ] = depthHalf;
+
+ // now apply vector to vertex buffer
+
+ vertices.push( vector.x, vector.y, vector.z );
+
+ // set values to correct vector component
+
+ vector[ u ] = 0;
+ vector[ v ] = 0;
+ vector[ w ] = depth > 0 ? 1 : - 1;
+
+ // now apply vector to normal buffer
+
+ normals.push( vector.x, vector.y, vector.z );
+
+ // uvs
+
+ uvs.push( ix / gridX );
+ uvs.push( 1 - ( iy / gridY ) );
+
+ // counters
+
+ vertexCounter += 1;
+
+ }
+
+ }
+
+ // indices
+
+ // 1. you need three indices to draw a single face
+ // 2. a single segment consists of two faces
+ // 3. so we need to generate six (2*3) indices per segment
+
+ for ( iy = 0; iy < gridY; iy ++ ) {
+
+ for ( ix = 0; ix < gridX; ix ++ ) {
+
+ var a = numberOfVertices + ix + gridX1 * iy;
+ var b = numberOfVertices + ix + gridX1 * ( iy + 1 );
+ var c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );
+ var d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;
+
+ // faces
+
+ indices.push( a, b, d );
+ indices.push( b, c, d );
+
+ // increase counter
+
+ groupCount += 6;
+
+ }
+
+ }
+
+ // add a group to the geometry. this will ensure multi material support
+
+ scope.addGroup( groupStart, groupCount, materialIndex );
+
+ // calculate new start value for groups
+
+ groupStart += groupCount;
+
+ // update total number of vertices
+
+ numberOfVertices += vertexCounter;
+
+ }
+
+ }
+
+ if ( BufferGeometry ) BoxBufferGeometry.__proto__ = BufferGeometry;
+ BoxBufferGeometry.prototype = Object.create( BufferGeometry && BufferGeometry.prototype );
+ BoxBufferGeometry.prototype.constructor = BoxBufferGeometry;
+
+ return BoxBufferGeometry;
+ }(BufferGeometry));
+
+ /**
+ * Uniform Utilities
+ */
+
+ function cloneUniforms( src ) {
+
+ var dst = {};
+
+ for ( var u in src ) {
+
+ dst[ u ] = {};
+
+ for ( var p in src[ u ] ) {
+
+ var property = src[ u ][ p ];
+
+ if ( property && ( property.isColor ||
+ property.isMatrix3 || property.isMatrix4 ||
+ property.isVector2 || property.isVector3 || property.isVector4 ||
+ property.isTexture ) ) {
+
+ dst[ u ][ p ] = property.clone();
+
+ } else if ( Array.isArray( property ) ) {
+
+ dst[ u ][ p ] = property.slice();
+
+ } else {
+
+ dst[ u ][ p ] = property;
+
+ }
+
+ }
+
+ }
+
+ return dst;
+
+ }
+
+ function mergeUniforms( uniforms ) {
+
+ var merged = {};
+
+ for ( var u = 0; u < uniforms.length; u ++ ) {
+
+ var tmp = cloneUniforms( uniforms[ u ] );
+
+ for ( var p in tmp ) {
+
+ merged[ p ] = tmp[ p ];
+
+ }
+
+ }
+
+ return merged;
+
+ }
+
+ // Legacy
+
+ var UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };
+
+ var default_vertex = "void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";
+
+ var default_fragment = "void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";
+
+ /**
+ * @author alteredq / http://alteredqualia.com/
+ *
+ * parameters = {
+ * defines: { "label" : "value" },
+ * uniforms: { "parameter1": { value: 1.0 }, "parameter2": { value2: 2 } },
+ *
+ * fragmentShader: ,
+ * vertexShader: ,
+ *
+ * wireframe: ,
+ * wireframeLinewidth: ,
+ *
+ * lights: ,
+ *
+ * skinning: ,
+ * morphTargets: ,
+ * morphNormals:
+ * }
+ */
+
+ function ShaderMaterial( parameters ) {
+
+ Material.call( this );
+
+ this.type = 'ShaderMaterial';
+
+ this.defines = {};
+ this.uniforms = {};
+
+ this.vertexShader = default_vertex;
+ this.fragmentShader = default_fragment;
+
+ this.linewidth = 1;
+
+ this.wireframe = false;
+ this.wireframeLinewidth = 1;
+
+ this.fog = false; // set to use scene fog
+ this.lights = false; // set to use scene lights
+ this.clipping = false; // set to use user-defined clipping planes
+
+ this.skinning = false; // set to use skinning attribute streams
+ this.morphTargets = false; // set to use morph targets
+ this.morphNormals = false; // set to use morph normals
+
+ this.extensions = {
+ derivatives: false, // set to use derivatives
+ fragDepth: false, // set to use fragment depth values
+ drawBuffers: false, // set to use draw buffers
+ shaderTextureLOD: false // set to use shader texture LOD
+ };
+
+ // When rendered geometry doesn't include these attributes but the material does,
+ // use these default values in WebGL. This avoids errors when buffer data is missing.
+ this.defaultAttributeValues = {
+ 'color': [ 1, 1, 1 ],
+ 'uv': [ 0, 0 ],
+ 'uv2': [ 0, 0 ]
+ };
+
+ this.index0AttributeName = undefined;
+ this.uniformsNeedUpdate = false;
+
+ if ( parameters !== undefined ) {
+
+ if ( parameters.attributes !== undefined ) {
+
+ console.error( 'THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.' );
+
+ }
+
+ this.setValues( parameters );
+
+ }
+
+ }
+
+ ShaderMaterial.prototype = Object.create( Material.prototype );
+ ShaderMaterial.prototype.constructor = ShaderMaterial;
+
+ ShaderMaterial.prototype.isShaderMaterial = true;
+
+ ShaderMaterial.prototype.copy = function ( source ) {
+
+ Material.prototype.copy.call( this, source );
+
+ this.fragmentShader = source.fragmentShader;
+ this.vertexShader = source.vertexShader;
+
+ this.uniforms = cloneUniforms( source.uniforms );
+
+ this.defines = Object.assign( {}, source.defines );
+
+ this.wireframe = source.wireframe;
+ this.wireframeLinewidth = source.wireframeLinewidth;
+
+ this.lights = source.lights;
+ this.clipping = source.clipping;
+
+ this.skinning = source.skinning;
+
+ this.morphTargets = source.morphTargets;
+ this.morphNormals = source.morphNormals;
+
+ this.extensions = source.extensions;
+
+ return this;
+
+ };
+
+ ShaderMaterial.prototype.toJSON = function ( meta ) {
+
+ var data = Material.prototype.toJSON.call( this, meta );
+
+ data.uniforms = {};
+
+ for ( var name in this.uniforms ) {
+
+ var uniform = this.uniforms[ name ];
+ var value = uniform.value;
+
+ if ( value && value.isTexture ) {
+
+ data.uniforms[ name ] = {
+ type: 't',
+ value: value.toJSON( meta ).uuid
+ };
+
+ } else if ( value && value.isColor ) {
+
+ data.uniforms[ name ] = {
+ type: 'c',
+ value: value.getHex()
+ };
+
+ } else if ( value && value.isVector2 ) {
+
+ data.uniforms[ name ] = {
+ type: 'v2',
+ value: value.toArray()
+ };
+
+ } else if ( value && value.isVector3 ) {
+
+ data.uniforms[ name ] = {
+ type: 'v3',
+ value: value.toArray()
+ };
+
+ } else if ( value && value.isVector4 ) {
+
+ data.uniforms[ name ] = {
+ type: 'v4',
+ value: value.toArray()
+ };
+
+ } else if ( value && value.isMatrix3 ) {
+
+ data.uniforms[ name ] = {
+ type: 'm3',
+ value: value.toArray()
+ };
+
+ } else if ( value && value.isMatrix4 ) {
+
+ data.uniforms[ name ] = {
+ type: 'm4',
+ value: value.toArray()
+ };
+
+ } else {
+
+ data.uniforms[ name ] = {
+ value: value
+ };
+
+ // note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far
+
+ }
+
+ }
+
+ if ( Object.keys( this.defines ).length > 0 ) { data.defines = this.defines; }
+
+ data.vertexShader = this.vertexShader;
+ data.fragmentShader = this.fragmentShader;
+
+ var extensions = {};
+
+ for ( var key in this.extensions ) {
+
+ if ( this.extensions[ key ] === true ) { extensions[ key ] = true; }
+
+ }
+
+ if ( Object.keys( extensions ).length > 0 ) { data.extensions = extensions; }
+
+ return data;
+
+ };
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author mikael emtinger / http://gomo.se/
+ * @author WestLangley / http://github.com/WestLangley
+ */
+
+ function Camera() {
+
+ Object3D.call( this );
+
+ this.type = 'Camera';
+
+ this.matrixWorldInverse = new Matrix4();
+
+ this.projectionMatrix = new Matrix4();
+ this.projectionMatrixInverse = new Matrix4();
+
+ }
+
+ Camera.prototype = Object.assign( Object.create( Object3D.prototype ), {
+
+ constructor: Camera,
+
+ isCamera: true,
+
+ copy: function ( source, recursive ) {
+
+ Object3D.prototype.copy.call( this, source, recursive );
+
+ this.matrixWorldInverse.copy( source.matrixWorldInverse );
+
+ this.projectionMatrix.copy( source.projectionMatrix );
+ this.projectionMatrixInverse.copy( source.projectionMatrixInverse );
+
+ return this;
+
+ },
+
+ getWorldDirection: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Camera: .getWorldDirection() target is now required' );
+ target = new Vector3();
+
+ }
+
+ this.updateMatrixWorld( true );
+
+ var e = this.matrixWorld.elements;
+
+ return target.set( - e[ 8 ], - e[ 9 ], - e[ 10 ] ).normalize();
+
+ },
+
+ updateMatrixWorld: function ( force ) {
+
+ Object3D.prototype.updateMatrixWorld.call( this, force );
+
+ this.matrixWorldInverse.getInverse( this.matrixWorld );
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author greggman / http://games.greggman.com/
+ * @author zz85 / http://www.lab4games.net/zz85/blog
+ * @author tschw
+ */
+
+ function PerspectiveCamera( fov, aspect, near, far ) {
+
+ Camera.call( this );
+
+ this.type = 'PerspectiveCamera';
+
+ this.fov = fov !== undefined ? fov : 50;
+ this.zoom = 1;
+
+ this.near = near !== undefined ? near : 0.1;
+ this.far = far !== undefined ? far : 2000;
+ this.focus = 10;
+
+ this.aspect = aspect !== undefined ? aspect : 1;
+ this.view = null;
+
+ this.filmGauge = 35; // width of the film (default in millimeters)
+ this.filmOffset = 0; // horizontal film offset (same unit as gauge)
+
+ this.updateProjectionMatrix();
+
+ }
+
+ PerspectiveCamera.prototype = Object.assign( Object.create( Camera.prototype ), {
+
+ constructor: PerspectiveCamera,
+
+ isPerspectiveCamera: true,
+
+ copy: function ( source, recursive ) {
+
+ Camera.prototype.copy.call( this, source, recursive );
+
+ this.fov = source.fov;
+ this.zoom = source.zoom;
+
+ this.near = source.near;
+ this.far = source.far;
+ this.focus = source.focus;
+
+ this.aspect = source.aspect;
+ this.view = source.view === null ? null : Object.assign( {}, source.view );
+
+ this.filmGauge = source.filmGauge;
+ this.filmOffset = source.filmOffset;
+
+ return this;
+
+ },
+
+ /**
+ * Sets the FOV by focal length in respect to the current .filmGauge.
+ *
+ * The default film gauge is 35, so that the focal length can be specified for
+ * a 35mm (full frame) camera.
+ *
+ * Values for focal length and film gauge must have the same unit.
+ */
+ setFocalLength: function ( focalLength ) {
+
+ // see http://www.bobatkins.com/photography/technical/field_of_view.html
+ var vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;
+
+ this.fov = _Math.RAD2DEG * 2 * Math.atan( vExtentSlope );
+ this.updateProjectionMatrix();
+
+ },
+
+ /**
+ * Calculates the focal length from the current .fov and .filmGauge.
+ */
+ getFocalLength: function () {
+
+ var vExtentSlope = Math.tan( _Math.DEG2RAD * 0.5 * this.fov );
+
+ return 0.5 * this.getFilmHeight() / vExtentSlope;
+
+ },
+
+ getEffectiveFOV: function () {
+
+ return _Math.RAD2DEG * 2 * Math.atan(
+ Math.tan( _Math.DEG2RAD * 0.5 * this.fov ) / this.zoom );
+
+ },
+
+ getFilmWidth: function () {
+
+ // film not completely covered in portrait format (aspect < 1)
+ return this.filmGauge * Math.min( this.aspect, 1 );
+
+ },
+
+ getFilmHeight: function () {
+
+ // film not completely covered in landscape format (aspect > 1)
+ return this.filmGauge / Math.max( this.aspect, 1 );
+
+ },
+
+ /**
+ * Sets an offset in a larger frustum. This is useful for multi-window or
+ * multi-monitor/multi-machine setups.
+ *
+ * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
+ * the monitors are in grid like this
+ *
+ * +---+---+---+
+ * | A | B | C |
+ * +---+---+---+
+ * | D | E | F |
+ * +---+---+---+
+ *
+ * then for each monitor you would call it like this
+ *
+ * var w = 1920;
+ * var h = 1080;
+ * var fullWidth = w * 3;
+ * var fullHeight = h * 2;
+ *
+ * --A--
+ * camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
+ * --B--
+ * camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
+ * --C--
+ * camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
+ * --D--
+ * camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
+ * --E--
+ * camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
+ * --F--
+ * camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
+ *
+ * Note there is no reason monitors have to be the same size or in a grid.
+ */
+ setViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {
+
+ this.aspect = fullWidth / fullHeight;
+
+ if ( this.view === null ) {
+
+ this.view = {
+ enabled: true,
+ fullWidth: 1,
+ fullHeight: 1,
+ offsetX: 0,
+ offsetY: 0,
+ width: 1,
+ height: 1
+ };
+
+ }
+
+ this.view.enabled = true;
+ this.view.fullWidth = fullWidth;
+ this.view.fullHeight = fullHeight;
+ this.view.offsetX = x;
+ this.view.offsetY = y;
+ this.view.width = width;
+ this.view.height = height;
+
+ this.updateProjectionMatrix();
+
+ },
+
+ clearViewOffset: function () {
+
+ if ( this.view !== null ) {
+
+ this.view.enabled = false;
+
+ }
+
+ this.updateProjectionMatrix();
+
+ },
+
+ updateProjectionMatrix: function () {
+
+ var near = this.near,
+ top = near * Math.tan( _Math.DEG2RAD * 0.5 * this.fov ) / this.zoom,
+ height = 2 * top,
+ width = this.aspect * height,
+ left = - 0.5 * width,
+ view = this.view;
+
+ if ( this.view !== null && this.view.enabled ) {
+
+ var fullWidth = view.fullWidth,
+ fullHeight = view.fullHeight;
+
+ left += view.offsetX * width / fullWidth;
+ top -= view.offsetY * height / fullHeight;
+ width *= view.width / fullWidth;
+ height *= view.height / fullHeight;
+
+ }
+
+ var skew = this.filmOffset;
+ if ( skew !== 0 ) { left += near * skew / this.getFilmWidth(); }
+
+ this.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far );
+
+ this.projectionMatrixInverse.getInverse( this.projectionMatrix );
+
+ },
+
+ toJSON: function ( meta ) {
+
+ var data = Object3D.prototype.toJSON.call( this, meta );
+
+ data.object.fov = this.fov;
+ data.object.zoom = this.zoom;
+
+ data.object.near = this.near;
+ data.object.far = this.far;
+ data.object.focus = this.focus;
+
+ data.object.aspect = this.aspect;
+
+ if ( this.view !== null ) { data.object.view = Object.assign( {}, this.view ); }
+
+ data.object.filmGauge = this.filmGauge;
+ data.object.filmOffset = this.filmOffset;
+
+ return data;
+
+ }
+
+ } );
+
+ /**
+ * Camera for rendering cube maps
+ * - renders scene into axis-aligned cube
+ *
+ * @author alteredq / http://alteredqualia.com/
+ */
+
+ var fov = 90, aspect = 1;
+
+ function CubeCamera( near, far, cubeResolution, options ) {
+
+ Object3D.call( this );
+
+ this.type = 'CubeCamera';
+
+ var cameraPX = new PerspectiveCamera( fov, aspect, near, far );
+ cameraPX.up.set( 0, - 1, 0 );
+ cameraPX.lookAt( new Vector3( 1, 0, 0 ) );
+ this.add( cameraPX );
+
+ var cameraNX = new PerspectiveCamera( fov, aspect, near, far );
+ cameraNX.up.set( 0, - 1, 0 );
+ cameraNX.lookAt( new Vector3( - 1, 0, 0 ) );
+ this.add( cameraNX );
+
+ var cameraPY = new PerspectiveCamera( fov, aspect, near, far );
+ cameraPY.up.set( 0, 0, 1 );
+ cameraPY.lookAt( new Vector3( 0, 1, 0 ) );
+ this.add( cameraPY );
+
+ var cameraNY = new PerspectiveCamera( fov, aspect, near, far );
+ cameraNY.up.set( 0, 0, - 1 );
+ cameraNY.lookAt( new Vector3( 0, - 1, 0 ) );
+ this.add( cameraNY );
+
+ var cameraPZ = new PerspectiveCamera( fov, aspect, near, far );
+ cameraPZ.up.set( 0, - 1, 0 );
+ cameraPZ.lookAt( new Vector3( 0, 0, 1 ) );
+ this.add( cameraPZ );
+
+ var cameraNZ = new PerspectiveCamera( fov, aspect, near, far );
+ cameraNZ.up.set( 0, - 1, 0 );
+ cameraNZ.lookAt( new Vector3( 0, 0, - 1 ) );
+ this.add( cameraNZ );
+
+ options = options || { format: RGBFormat, magFilter: LinearFilter, minFilter: LinearFilter };
+
+ this.renderTarget = new WebGLRenderTargetCube( cubeResolution, cubeResolution, options );
+ this.renderTarget.texture.name = "CubeCamera";
+
+ this.update = function ( renderer, scene ) {
+
+ if ( this.parent === null ) { this.updateMatrixWorld(); }
+
+ var currentRenderTarget = renderer.getRenderTarget();
+
+ var renderTarget = this.renderTarget;
+ var generateMipmaps = renderTarget.texture.generateMipmaps;
+
+ renderTarget.texture.generateMipmaps = false;
+
+ renderer.setRenderTarget( renderTarget, 0 );
+ renderer.render( scene, cameraPX );
+
+ renderer.setRenderTarget( renderTarget, 1 );
+ renderer.render( scene, cameraNX );
+
+ renderer.setRenderTarget( renderTarget, 2 );
+ renderer.render( scene, cameraPY );
+
+ renderer.setRenderTarget( renderTarget, 3 );
+ renderer.render( scene, cameraNY );
+
+ renderer.setRenderTarget( renderTarget, 4 );
+ renderer.render( scene, cameraPZ );
+
+ renderTarget.texture.generateMipmaps = generateMipmaps;
+
+ renderer.setRenderTarget( renderTarget, 5 );
+ renderer.render( scene, cameraNZ );
+
+ renderer.setRenderTarget( currentRenderTarget );
+
+ };
+
+ this.clear = function ( renderer, color, depth, stencil ) {
+
+ var currentRenderTarget = renderer.getRenderTarget();
+
+ var renderTarget = this.renderTarget;
+
+ for ( var i = 0; i < 6; i ++ ) {
+
+ renderer.setRenderTarget( renderTarget, i );
+
+ renderer.clear( color, depth, stencil );
+
+ }
+
+ renderer.setRenderTarget( currentRenderTarget );
+
+ };
+
+ }
+
+ CubeCamera.prototype = Object.create( Object3D.prototype );
+ CubeCamera.prototype.constructor = CubeCamera;
+
+ /**
+ * @author alteredq / http://alteredqualia.com
+ * @author WestLangley / http://github.com/WestLangley
+ */
+
+ function WebGLRenderTargetCube( width, height, options ) {
+
+ WebGLRenderTarget.call( this, width, height, options );
+
+ }
+
+ WebGLRenderTargetCube.prototype = Object.create( WebGLRenderTarget.prototype );
+ WebGLRenderTargetCube.prototype.constructor = WebGLRenderTargetCube;
+
+ WebGLRenderTargetCube.prototype.isWebGLRenderTargetCube = true;
+
+ WebGLRenderTargetCube.prototype.fromEquirectangularTexture = function ( renderer, texture ) {
+
+ this.texture.type = texture.type;
+ this.texture.format = texture.format;
+ this.texture.encoding = texture.encoding;
+
+ var scene = new Scene();
+
+ var shader = {
+
+ uniforms: {
+ tEquirect: { value: null },
+ },
+
+ vertexShader: [
+
+ "varying vec3 vWorldDirection;",
+
+ "vec3 transformDirection( in vec3 dir, in mat4 matrix ) {",
+
+ " return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );",
+
+ "}",
+
+ "void main() {",
+
+ " vWorldDirection = transformDirection( position, modelMatrix );",
+
+ " #include ",
+ " #include ",
+
+ "}"
+
+ ].join( '\n' ),
+
+ fragmentShader: [
+
+ "uniform sampler2D tEquirect;",
+
+ "varying vec3 vWorldDirection;",
+
+ "#define RECIPROCAL_PI 0.31830988618",
+ "#define RECIPROCAL_PI2 0.15915494",
+
+ "void main() {",
+
+ " vec3 direction = normalize( vWorldDirection );",
+
+ " vec2 sampleUV;",
+
+ " sampleUV.y = asin( clamp( direction.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;",
+
+ " sampleUV.x = atan( direction.z, direction.x ) * RECIPROCAL_PI2 + 0.5;",
+
+ " gl_FragColor = texture2D( tEquirect, sampleUV );",
+
+ "}"
+
+ ].join( '\n' ),
+ };
+
+ var material = new ShaderMaterial( {
+
+ type: 'CubemapFromEquirect',
+
+ uniforms: cloneUniforms( shader.uniforms ),
+ vertexShader: shader.vertexShader,
+ fragmentShader: shader.fragmentShader,
+ side: BackSide,
+ blending: NoBlending
+
+ } );
+
+ material.uniforms.tEquirect.value = texture;
+
+ var mesh = new Mesh( new BoxBufferGeometry( 5, 5, 5 ), material );
+
+ scene.add( mesh );
+
+ var camera = new CubeCamera( 1, 10, 1 );
+
+ camera.renderTarget = this;
+ camera.renderTarget.texture.name = 'CubeCameraTexture';
+
+ camera.update( renderer, scene );
+
+ mesh.geometry.dispose();
+ mesh.material.dispose();
+
+ return this;
+
+ };
+
+ /**
+ * @author alteredq / http://alteredqualia.com/
+ */
+
+ function DataTexture( data, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {
+
+ Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );
+
+ this.image = { data: data || null, width: width || 1, height: height || 1 };
+
+ this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
+ this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
+
+ this.generateMipmaps = false;
+ this.flipY = false;
+ this.unpackAlignment = 1;
+
+ this.needsUpdate = true;
+
+ }
+
+ DataTexture.prototype = Object.create( Texture.prototype );
+ DataTexture.prototype.constructor = DataTexture;
+
+ DataTexture.prototype.isDataTexture = true;
+
+ /**
+ * @author bhouston / http://clara.io
+ */
+
+ var _vector1 = new Vector3();
+ var _vector2 = new Vector3();
+ var _normalMatrix = new Matrix3();
+
+ function Plane( normal, constant ) {
+
+ // normal is assumed to be normalized
+
+ this.normal = ( normal !== undefined ) ? normal : new Vector3( 1, 0, 0 );
+ this.constant = ( constant !== undefined ) ? constant : 0;
+
+ }
+
+ Object.assign( Plane.prototype, {
+
+ isPlane: true,
+
+ set: function ( normal, constant ) {
+
+ this.normal.copy( normal );
+ this.constant = constant;
+
+ return this;
+
+ },
+
+ setComponents: function ( x, y, z, w ) {
+
+ this.normal.set( x, y, z );
+ this.constant = w;
+
+ return this;
+
+ },
+
+ setFromNormalAndCoplanarPoint: function ( normal, point ) {
+
+ this.normal.copy( normal );
+ this.constant = - point.dot( this.normal );
+
+ return this;
+
+ },
+
+ setFromCoplanarPoints: function ( a, b, c ) {
+
+ var normal = _vector1.subVectors( c, b ).cross( _vector2.subVectors( a, b ) ).normalize();
+
+ // Q: should an error be thrown if normal is zero (e.g. degenerate plane)?
+
+ this.setFromNormalAndCoplanarPoint( normal, a );
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ },
+
+ copy: function ( plane ) {
+
+ this.normal.copy( plane.normal );
+ this.constant = plane.constant;
+
+ return this;
+
+ },
+
+ normalize: function () {
+
+ // Note: will lead to a divide by zero if the plane is invalid.
+
+ var inverseNormalLength = 1.0 / this.normal.length();
+ this.normal.multiplyScalar( inverseNormalLength );
+ this.constant *= inverseNormalLength;
+
+ return this;
+
+ },
+
+ negate: function () {
+
+ this.constant *= - 1;
+ this.normal.negate();
+
+ return this;
+
+ },
+
+ distanceToPoint: function ( point ) {
+
+ return this.normal.dot( point ) + this.constant;
+
+ },
+
+ distanceToSphere: function ( sphere ) {
+
+ return this.distanceToPoint( sphere.center ) - sphere.radius;
+
+ },
+
+ projectPoint: function ( point, target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Plane: .projectPoint() target is now required' );
+ target = new Vector3();
+
+ }
+
+ return target.copy( this.normal ).multiplyScalar( - this.distanceToPoint( point ) ).add( point );
+
+ },
+
+ intersectLine: function ( line, target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Plane: .intersectLine() target is now required' );
+ target = new Vector3();
+
+ }
+
+ var direction = line.delta( _vector1 );
+
+ var denominator = this.normal.dot( direction );
+
+ if ( denominator === 0 ) {
+
+ // line is coplanar, return origin
+ if ( this.distanceToPoint( line.start ) === 0 ) {
+
+ return target.copy( line.start );
+
+ }
+
+ // Unsure if this is the correct method to handle this case.
+ return undefined;
+
+ }
+
+ var t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;
+
+ if ( t < 0 || t > 1 ) {
+
+ return undefined;
+
+ }
+
+ return target.copy( direction ).multiplyScalar( t ).add( line.start );
+
+ },
+
+ intersectsLine: function ( line ) {
+
+ // Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.
+
+ var startSign = this.distanceToPoint( line.start );
+ var endSign = this.distanceToPoint( line.end );
+
+ return ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );
+
+ },
+
+ intersectsBox: function ( box ) {
+
+ return box.intersectsPlane( this );
+
+ },
+
+ intersectsSphere: function ( sphere ) {
+
+ return sphere.intersectsPlane( this );
+
+ },
+
+ coplanarPoint: function ( target ) {
+
+ if ( target === undefined ) {
+
+ console.warn( 'THREE.Plane: .coplanarPoint() target is now required' );
+ target = new Vector3();
+
+ }
+
+ return target.copy( this.normal ).multiplyScalar( - this.constant );
+
+ },
+
+ applyMatrix4: function ( matrix, optionalNormalMatrix ) {
+
+ var normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix( matrix );
+
+ var referencePoint = this.coplanarPoint( _vector1 ).applyMatrix4( matrix );
+
+ var normal = this.normal.applyMatrix3( normalMatrix ).normalize();
+
+ this.constant = - referencePoint.dot( normal );
+
+ return this;
+
+ },
+
+ translate: function ( offset ) {
+
+ this.constant -= offset.dot( this.normal );
+
+ return this;
+
+ },
+
+ equals: function ( plane ) {
+
+ return plane.normal.equals( this.normal ) && ( plane.constant === this.constant );
+
+ }
+
+ } );
+
+ /**
+ * @author mrdoob / http://mrdoob.com/
+ * @author alteredq / http://alteredqualia.com/
+ * @author bhouston / http://clara.io
+ */
+
+ var _sphere$1 = new Sphere();
+ var _vector$5 = new Vector3();
+
+ function Frustum( p0, p1, p2, p3, p4, p5 ) {
+
+ this.planes = [
+
+ ( p0 !== undefined ) ? p0 : new Plane(),
+ ( p1 !== undefined ) ? p1 : new Plane(),
+ ( p2 !== undefined ) ? p2 : new Plane(),
+ ( p3 !== undefined ) ? p3 : new Plane(),
+ ( p4 !== undefined ) ? p4 : new Plane(),
+ ( p5 !== undefined ) ? p5 : new Plane()
+
+ ];
+
+ }
+
+ Object.assign( Frustum.prototype, {
+
+ set: function ( p0, p1, p2, p3, p4, p5 ) {
+
+ var planes = this.planes;
+
+ planes[ 0 ].copy( p0 );
+ planes[ 1 ].copy( p1 );
+ planes[ 2 ].copy( p2 );
+ planes[ 3 ].copy( p3 );
+ planes[ 4 ].copy( p4 );
+ planes[ 5 ].copy( p5 );
+
+ return this;
+
+ },
+
+ clone: function () {
+
+ return new this.constructor().copy( this );
+
+ },
+
+ copy: function ( frustum ) {
+
+ var planes = this.planes;
+
+ for ( var i = 0; i < 6; i ++ ) {
+
+ planes[ i ].copy( frustum.planes[ i ] );
+
+ }
+
+ return this;
+
+ },
+
+ setFromMatrix: function ( m ) {
+
+ var planes = this.planes;
+ var me = m.elements;
+ var me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];
+ var me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];
+ var me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];
+ var me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];
+
+ planes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();
+ planes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();
+ planes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();
+ planes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();
+ planes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();
+ planes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();
+
+ return this;
+
+ },
+
+ intersectsObject: function ( object ) {
+
+ var geometry = object.geometry;
+
+ if ( geometry.boundingSphere === null ) { geometry.computeBoundingSphere(); }
+
+ _sphere$1.copy( geometry.boundingSphere ).applyMatrix4( object.matrixWorld );
+
+ return this.intersectsSphere( _sphere$1 );
+
+ },
+
+ intersectsSprite: function ( sprite ) {
+
+ _sphere$1.center.set( 0, 0, 0 );
+ _sphere$1.radius = 0.7071067811865476;
+ _sphere$1.applyMatrix4( sprite.matrixWorld );
+
+ return this.intersectsSphere( _sphere$1 );
+
+ },
+
+ intersectsSphere: function ( sphere ) {
+
+ var planes = this.planes;
+ var center = sphere.center;
+ var negRadius = - sphere.radius;
+
+ for ( var i = 0; i < 6; i ++ ) {
+
+ var distance = planes[ i ].distanceToPoint( center );
+
+ if ( distance < negRadius ) {
+
+ return false;
+
+ }
+
+ }
+
+ return true;
+
+ },
+
+ intersectsBox: function ( box ) {
+
+ var planes = this.planes;
+
+ for ( var i = 0; i < 6; i ++ ) {
+
+ var plane = planes[ i ];
+
+ // corner at max distance
+
+ _vector$5.x = plane.normal.x > 0 ? box.max.x : box.min.x;
+ _vector$5.y = plane.normal.y > 0 ? box.max.y : box.min.y;
+ _vector$5.z = plane.normal.z > 0 ? box.max.z : box.min.z;
+
+ if ( plane.distanceToPoint( _vector$5 ) < 0 ) {
+
+ return false;
+
+ }
+
+ }
+
+ return true;
+
+ },
+
+ containsPoint: function ( point ) {
+
+ var planes = this.planes;
+
+ for ( var i = 0; i < 6; i ++ ) {
+
+ if ( planes[ i ].distanceToPoint( point ) < 0 ) {
+
+ return false;
+
+ }
+
+ }
+
+ return true;
+
+ }
+
+ } );
+
+ var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif";
+
+ var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
+
+ var alphatest_fragment = "#ifdef ALPHATEST\n\tif ( diffuseColor.a < ALPHATEST ) discard;\n#endif";
+
+ var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );\n\t#endif\n#endif";
+
+ var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";
+
+ var begin_vertex = "vec3 transformed = vec3( position );";
+
+ var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif";
+
+ var bsdfs = "vec2 integrateSpecularBRDF( const in float dotNV, const in float roughness ) {\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\treturn vec2( -1.04, 1.04 ) * a004 + r.zw;\n}\nfloat punctualLightIntensityToIrradianceFactor( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\tif( cutoffDistance > 0.0 ) {\n\t\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t}\n\treturn distanceFalloff;\n#else\n\tif( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\n\t\treturn pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\n\t}\n\treturn 1.0;\n#endif\n}\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 specularColor, const in float dotLH ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotLH - 6.98316 ) * dotLH );\n\treturn ( 1.0 - specularColor ) * fresnel + specularColor;\n}\nvec3 F_Schlick_RoughnessDependent( const in vec3 F0, const in float dotNV, const in float roughness ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotNV - 6.98316 ) * dotNV );\n\tvec3 Fr = max( vec3( 1.0 - roughness ), F0 ) - F0;\n\treturn Fr * fresnel + F0;\n}\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gl = dotNL + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\tfloat gv = dotNV + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\treturn 1.0 / ( gl * gv );\n}\nfloat G_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( incidentLight.direction + viewDir );\n\tfloat dotNL = saturate( dot( normal, incidentLight.direction ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( G * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nvec3 BRDF_Specular_GGX_Environment( const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\treturn specularColor * brdf.x + brdf.y;\n}\nvoid BRDF_Specular_Multiscattering_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\tvec3 F = F_Schlick_RoughnessDependent( specularColor, dotNV, roughness );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\tvec3 FssEss = F * brdf.x + brdf.y;\n\tfloat Ess = brdf.x + brdf.y;\n\tfloat Ems = 1.0 - Ess;\n\tvec3 Favg = specularColor + ( 1.0 - specularColor ) * 0.047619;\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n\tsingleScatter += FssEss;\n\tmultiScatter += Fms * Ems;\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\n\treturn ( 2.0 / pow2( ggxRoughness + 0.0001 ) - 2.0 );\n}\nfloat BlinnExponentToGGXRoughness( const in float blinnExponent ) {\n\treturn sqrt( 2.0 / ( blinnExponent + 2.0 ) );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie(float roughness, float NoH) {\n\tfloat invAlpha = 1.0 / roughness;\n\tfloat cos2h = NoH * NoH;\n\tfloat sin2h = max(1.0 - cos2h, 0.0078125);\treturn (2.0 + invAlpha) * pow(sin2h, invAlpha * 0.5) / (2.0 * PI);\n}\nfloat V_Neubelt(float NoV, float NoL) {\n\treturn saturate(1.0 / (4.0 * (NoL + NoV - NoL * NoV)));\n}\nvec3 BRDF_Specular_Sheen( const in float roughness, const in vec3 L, const in GeometricContext geometry, vec3 specularColor ) {\n\tvec3 N = geometry.normal;\n\tvec3 V = geometry.viewDir;\n\tvec3 H = normalize( V + L );\n\tfloat dotNH = saturate( dot( N, H ) );\n\treturn specularColor * D_Charlie( roughness, dotNH ) * V_Neubelt( dot(N, V), dot(N, L) );\n}\n#endif";
+
+ var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy ) {\n\t\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\n\t\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 );\n\t\tfDet *= ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif";
+
+ var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vViewPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vViewPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\tif ( clipped ) discard;\n\t#endif\n#endif";
+
+ var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\t#if ! defined( STANDARD ) && ! defined( PHONG ) && ! defined( MATCAP )\n\t\tvarying vec3 vViewPosition;\n\t#endif\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";
+
+ var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0 && ! defined( STANDARD ) && ! defined( PHONG ) && ! defined( MATCAP )\n\tvarying vec3 vViewPosition;\n#endif";
+
+ var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0 && ! defined( STANDARD ) && ! defined( PHONG ) && ! defined( MATCAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif";
+
+ var color_fragment = "#ifdef USE_COLOR\n\tdiffuseColor.rgb *= vColor;\n#endif";
+
+ var color_pars_fragment = "#ifdef USE_COLOR\n\tvarying vec3 vColor;\n#endif";
+
+ var color_pars_vertex = "#ifdef USE_COLOR\n\tvarying vec3 vColor;\n#endif";
+
+ var color_vertex = "#ifdef USE_COLOR\n\tvColor.xyz = color.xyz;\n#endif";
+
+ var common = "#define PI 3.14159265359\n#define PI2 6.28318530718\n#define PI_HALF 1.5707963267949\n#define RECIPROCAL_PI 0.31830988618\n#define RECIPROCAL_PI2 0.15915494\n#define LOG2 1.442695\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement(a) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract(sin(sn) * c);\n}\n#ifdef HIGH_PRECISION\n\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n\tfloat max3( vec3 v ) { return max( max( v.x, v.y ), v.z ); }\n\tfloat precisionSafeLength( vec3 v ) {\n\t\tfloat maxComponent = max3( abs( v ) );\n\t\treturn length( v / maxComponent ) * maxComponent;\n\t}\n#endif\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n#ifdef CLEARCOAT\n\tvec3 clearcoatNormal;\n#endif\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\tfloat distance = dot( planeNormal, point - pointOnPlane );\n\treturn - distance * planeNormal + point;\n}\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn sign( dot( point - pointOnPlane, planeNormal ) );\n}\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat linearToRelativeLuminance( const in vec3 color ) {\n\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\n\treturn dot( weights, color.rgb );\n}\nbool isPerspectiveMatrix( mat4 m ) {\n return m[ 2 ][ 3 ] == - 1.0;\n}";
+
+ var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n#define cubeUV_textureSize (1024.0)\nint getFaceFromDirection(vec3 direction) {\n\tvec3 absDirection = abs(direction);\n\tint face = -1;\n\tif( absDirection.x > absDirection.z ) {\n\t\tif(absDirection.x > absDirection.y )\n\t\t\tface = direction.x > 0.0 ? 0 : 3;\n\t\telse\n\t\t\tface = direction.y > 0.0 ? 1 : 4;\n\t}\n\telse {\n\t\tif(absDirection.z > absDirection.y )\n\t\t\tface = direction.z > 0.0 ? 2 : 5;\n\t\telse\n\t\t\tface = direction.y > 0.0 ? 1 : 4;\n\t}\n\treturn face;\n}\n#define cubeUV_maxLods1 (log2(cubeUV_textureSize*0.25) - 1.0)\n#define cubeUV_rangeClamp (exp2((6.0 - 1.0) * 2.0))\nvec2 MipLevelInfo( vec3 vec, float roughnessLevel, float roughness ) {\n\tfloat scale = exp2(cubeUV_maxLods1 - roughnessLevel);\n\tfloat dxRoughness = dFdx(roughness);\n\tfloat dyRoughness = dFdy(roughness);\n\tvec3 dx = dFdx( vec * scale * dxRoughness );\n\tvec3 dy = dFdy( vec * scale * dyRoughness );\n\tfloat d = max( dot( dx, dx ), dot( dy, dy ) );\n\td = clamp(d, 1.0, cubeUV_rangeClamp);\n\tfloat mipLevel = 0.5 * log2(d);\n\treturn vec2(floor(mipLevel), fract(mipLevel));\n}\n#define cubeUV_maxLods2 (log2(cubeUV_textureSize*0.25) - 2.0)\n#define cubeUV_rcpTextureSize (1.0 / cubeUV_textureSize)\nvec2 getCubeUV(vec3 direction, float roughnessLevel, float mipLevel) {\n\tmipLevel = roughnessLevel > cubeUV_maxLods2 - 3.0 ? 0.0 : mipLevel;\n\tfloat a = 16.0 * cubeUV_rcpTextureSize;\n\tvec2 exp2_packed = exp2( vec2( roughnessLevel, mipLevel ) );\n\tvec2 rcp_exp2_packed = vec2( 1.0 ) / exp2_packed;\n\tfloat powScale = exp2_packed.x * exp2_packed.y;\n\tfloat scale = rcp_exp2_packed.x * rcp_exp2_packed.y * 0.25;\n\tfloat mipOffset = 0.75*(1.0 - rcp_exp2_packed.y) * rcp_exp2_packed.x;\n\tbool bRes = mipLevel == 0.0;\n\tscale = bRes && (scale < a) ? a : scale;\n\tvec3 r;\n\tvec2 offset;\n\tint face = getFaceFromDirection(direction);\n\tfloat rcpPowScale = 1.0 / powScale;\n\tif( face == 0) {\n\t\tr = vec3(direction.x, -direction.z, direction.y);\n\t\toffset = vec2(0.0+mipOffset,0.75 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? a : offset.y;\n\t}\n\telse if( face == 1) {\n\t\tr = vec3(direction.y, direction.x, direction.z);\n\t\toffset = vec2(scale+mipOffset, 0.75 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? a : offset.y;\n\t}\n\telse if( face == 2) {\n\t\tr = vec3(direction.z, direction.x, direction.y);\n\t\toffset = vec2(2.0*scale+mipOffset, 0.75 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? a : offset.y;\n\t}\n\telse if( face == 3) {\n\t\tr = vec3(direction.x, direction.z, direction.y);\n\t\toffset = vec2(0.0+mipOffset,0.5 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? 0.0 : offset.y;\n\t}\n\telse if( face == 4) {\n\t\tr = vec3(direction.y, direction.x, -direction.z);\n\t\toffset = vec2(scale+mipOffset, 0.5 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? 0.0 : offset.y;\n\t}\n\telse {\n\t\tr = vec3(direction.z, -direction.x, direction.y);\n\t\toffset = vec2(2.0*scale+mipOffset, 0.5 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? 0.0 : offset.y;\n\t}\n\tr = normalize(r);\n\tfloat texelOffset = 0.5 * cubeUV_rcpTextureSize;\n\tvec2 s = ( r.yz / abs( r.x ) + vec2( 1.0 ) ) * 0.5;\n\tvec2 base = offset + vec2( texelOffset );\n\treturn base + s * ( scale - 2.0 * texelOffset );\n}\n#define cubeUV_maxLods3 (log2(cubeUV_textureSize*0.25) - 3.0)\nvec4 textureCubeUV( sampler2D envMap, vec3 reflectedDirection, float roughness ) {\n\tfloat roughnessVal = roughness* cubeUV_maxLods3;\n\tfloat r1 = floor(roughnessVal);\n\tfloat r2 = r1 + 1.0;\n\tfloat t = fract(roughnessVal);\n\tvec2 mipInfo = MipLevelInfo(reflectedDirection, r1, roughness);\n\tfloat s = mipInfo.y;\n\tfloat level0 = mipInfo.x;\n\tfloat level1 = level0 + 1.0;\n\tlevel1 = level1 > 5.0 ? 5.0 : level1;\n\tlevel0 += min( floor( s + 0.5 ), 5.0 );\n\tvec2 uv_10 = getCubeUV(reflectedDirection, r1, level0);\n\tvec4 color10 = envMapTexelToLinear(texture2D(envMap, uv_10));\n\tvec2 uv_20 = getCubeUV(reflectedDirection, r2, level0);\n\tvec4 color20 = envMapTexelToLinear(texture2D(envMap, uv_20));\n\tvec4 result = mix(color10, color20, t);\n\treturn vec4(result.rgb, 1.0);\n}\n#endif";
+
+ var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_INSTANCING\n\ttransformedNormal = mat3( instanceMatrix ) * transformedNormal;\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = normalMatrix * objectTangent;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif";
+
+ var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif";
+
+ var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\n#endif";
+
+ var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif";
+
+ var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif";
+
+ var encodings_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";
+
+ var encodings_pars_fragment = "\nvec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( gammaFactor ) ), value.a );\n}\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( 1.0 / gammaFactor ) ), value.a );\n}\nvec4 sRGBToLinear( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.a );\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}\nvec4 RGBEToLinear( in vec4 value ) {\n\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\n}\nvec4 LinearToRGBE( in vec4 value ) {\n\tfloat maxComponent = max( max( value.r, value.g ), value.b );\n\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\n\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\n}\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * value.a * maxRange, 1.0 );\n}\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat M = clamp( maxRGB / maxRange, 0.0, 1.0 );\n\tM = ceil( M * 255.0 ) / 255.0;\n\treturn vec4( value.rgb / ( M * maxRange ), M );\n}\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\n}\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat D = max( maxRange / maxRGB, 1.0 );\n\tD = min( floor( D ) / 255.0, 1.0 );\n\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\n}\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\nvec4 LinearToLogLuv( in vec4 value ) {\n\tvec3 Xp_Y_XYZp = cLogLuvM * value.rgb;\n\tXp_Y_XYZp = max( Xp_Y_XYZp, vec3( 1e-6, 1e-6, 1e-6 ) );\n\tvec4 vResult;\n\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\n\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\n\tvResult.w = fract( Le );\n\tvResult.z = ( Le - ( floor( vResult.w * 255.0 ) ) / 255.0 ) / 255.0;\n\treturn vResult;\n}\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\nvec4 LogLuvToLinear( in vec4 value ) {\n\tfloat Le = value.z * 255.0 + value.w;\n\tvec3 Xp_Y_XYZp;\n\tXp_Y_XYZp.y = exp2( ( Le - 127.0 ) / 2.0 );\n\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\n\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\n\tvec3 vRGB = cLogLuvInverseM * Xp_Y_XYZp.rgb;\n\treturn vec4( max( vRGB, 0.0 ), 1.0 );\n}";
+
+ var envmap_fragment = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToVertex = normalize( vWorldPosition - cameraPosition );\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#elif defined( ENVMAP_TYPE_EQUIREC )\n\t\tvec2 sampleUV;\n\t\treflectVec = normalize( reflectVec );\n\t\tsampleUV.y = asin( clamp( reflectVec.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\t\tsampleUV.x = atan( reflectVec.z, reflectVec.x ) * RECIPROCAL_PI2 + 0.5;\n\t\tvec4 envColor = texture2D( envMap, sampleUV );\n\t#elif defined( ENVMAP_TYPE_SPHERE )\n\t\treflectVec = normalize( reflectVec );\n\t\tvec3 reflectView = normalize( ( viewMatrix * vec4( reflectVec, 0.0 ) ).xyz + vec3( 0.0, 0.0, 1.0 ) );\n\t\tvec4 envColor = texture2D( envMap, reflectView.xy * 0.5 + 0.5 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\tenvColor = envMapTexelToLinear( envColor );\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif";
+
+ var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\tuniform int maxMipLevel;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif";
+
+ var envmap_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif";
+
+ var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) ||defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif";
+
+ var envmap_vertex = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif";
+
+ var fog_vertex = "#ifdef USE_FOG\n\tfogDepth = -mvPosition.z;\n#endif";
+
+ var fog_pars_vertex = "#ifdef USE_FOG\n\tvarying float fogDepth;\n#endif";
+
+ var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * fogDepth * fogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, fogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";
+
+ var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float fogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif";
+
+ var gradientmap_pars_fragment = "#ifdef TOON\n\tuniform sampler2D gradientMap;\n\tvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\t\tfloat dotNL = dot( normal, lightDirection );\n\t\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t\t#ifdef USE_GRADIENTMAP\n\t\t\treturn texture2D( gradientMap, coord ).rgb;\n\t\t#else\n\t\t\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\n\t\t#endif\n\t}\n#endif";
+
+ var lightmap_fragment = "#ifdef USE_LIGHTMAP\n\treflectedLight.indirectDiffuse += PI * texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n#endif";
+
+ var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";
+
+ var lights_lambert_vertex = "vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\nvIndirectFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n\tvLightBack = vec3( 0.0 );\n\tvIndirectBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\n#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tgetPointDirectLightIrradiance( pointLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tgetSpotDirectLightIrradiance( spotLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n#endif\n#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tgetDirectionalDirectLightIrradiance( directionalLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\tvIndirectFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvIndirectBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\n\t\t#endif\n\t}\n#endif";
+
+ var lights_pars_begin = "uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\nuniform vec3 lightProbe[ 9 ];\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n\tfloat x = normal.x, y = normal.y, z = normal.z;\n\tvec3 result = shCoefficients[ 0 ] * 0.886227;\n\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n\treturn result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in GeometricContext geometry ) {\n\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n\treturn irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treturn irradiance;\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tint shadow;\n\t\tfloat shadowBias;\n\t\tfloat shadowRadius;\n\t\tvec2 shadowMapSize;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalDirectLightIrradiance( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tdirectLight.color = directionalLight.color;\n\t\tdirectLight.direction = directionalLight.direction;\n\t\tdirectLight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tint shadow;\n\t\tfloat shadowBias;\n\t\tfloat shadowRadius;\n\t\tvec2 shadowMapSize;\n\t\tfloat shadowCameraNear;\n\t\tfloat shadowCameraFar;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointDirectLightIrradiance( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tdirectLight.color = pointLight.color;\n\t\tdirectLight.color *= punctualLightIntensityToIrradianceFactor( lightDistance, pointLight.distance, pointLight.decay );\n\t\tdirectLight.visible = ( directLight.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t\tint shadow;\n\t\tfloat shadowBias;\n\t\tfloat shadowRadius;\n\t\tvec2 shadowMapSize;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotDirectLightIrradiance( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tfloat angleCos = dot( directLight.direction, spotLight.direction );\n\t\tif ( angleCos > spotLight.coneCos ) {\n\t\t\tfloat spotEffect = smoothstep( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\t\tdirectLight.color = spotLight.color;\n\t\t\tdirectLight.color *= spotEffect * punctualLightIntensityToIrradianceFactor( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tdirectLight.visible = true;\n\t\t} else {\n\t\t\tdirectLight.color = vec3( 0.0 );\n\t\t\tdirectLight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\n\t\tfloat dotNL = dot( geometry.normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tirradiance *= PI;\n\t\t#endif\n\t\treturn irradiance;\n\t}\n#endif";
+
+ var envmap_physical_pars_fragment = "#if defined( USE_ENVMAP )\n\t#ifdef ENVMAP_MODE_REFRACTION\n\t\tuniform float refractionRatio;\n\t#endif\n\tvec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\n\t\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, queryVec, 1.0 );\n\t\t#else\n\t\t\tvec4 envMapColor = vec4( 0.0 );\n\t\t#endif\n\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t}\n\tfloat getSpecularMIPLevel( const in float roughness, const in int maxMIPLevel ) {\n\t\tfloat maxMIPLevelScalar = float( maxMIPLevel );\n\t\tfloat sigma = PI * roughness * roughness / ( 1.0 + roughness );\n\t\tfloat desiredMIPLevel = maxMIPLevelScalar + log2( sigma );\n\t\treturn clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\n\t}\n\tvec3 getLightProbeIndirectRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in int maxMIPLevel ) {\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t vec3 reflectVec = reflect( -viewDir, normal );\n\t\t reflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t#else\n\t\t vec3 reflectVec = refract( -viewDir, normal, refractionRatio );\n\t\t#endif\n\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\tfloat specularMIPLevel = getSpecularMIPLevel( roughness, maxMIPLevel );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, queryReflectVec, roughness );\n\t\t#elif defined( ENVMAP_TYPE_EQUIREC )\n\t\t\tvec2 sampleUV;\n\t\t\tsampleUV.y = asin( clamp( reflectVec.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\t\t\tsampleUV.x = atan( reflectVec.z, reflectVec.x ) * RECIPROCAL_PI2 + 0.5;\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = texture2DLodEXT( envMap, sampleUV, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = texture2D( envMap, sampleUV, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_SPHERE )\n\t\t\tvec3 reflectView = normalize( ( viewMatrix * vec4( reflectVec, 0.0 ) ).xyz + vec3( 0.0,0.0,1.0 ) );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = texture2DLodEXT( envMap, reflectView.xy * 0.5 + 0.5, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = texture2D( envMap, reflectView.xy * 0.5 + 0.5, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#endif\n\t\treturn envMapColor.rgb * envMapIntensity;\n\t}\n#endif";
+
+ var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";
+
+ var lights_phong_pars_fragment = "varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct BlinnPhongMaterial {\n\tvec3\tdiffuseColor;\n\tvec3\tspecularColor;\n\tfloat\tspecularShininess;\n\tfloat\tspecularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\t#ifdef TOON\n\t\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\t#else\n\t\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\t\tvec3 irradiance = dotNL * directLight.color;\n\t#endif\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)";
+
+ var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nmaterial.specularRoughness = clamp( roughnessFactor, 0.04, 1.0 );\n#ifdef REFLECTIVITY\n\tmaterial.specularColor = mix( vec3( MAXIMUM_SPECULAR_COEFFICIENT * pow2( reflectivity ) ), diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( DEFAULT_SPECULAR_COEFFICIENT ), diffuseColor.rgb, metalnessFactor );\n#endif\n#ifdef CLEARCOAT\n\tmaterial.clearcoat = saturate( clearcoat );\tmaterial.clearcoatRoughness = clamp( clearcoatRoughness, 0.04, 1.0 );\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenColor = sheen;\n#endif";
+
+ var lights_physical_pars_fragment = "struct PhysicalMaterial {\n\tvec3\tdiffuseColor;\n\tfloat\tspecularRoughness;\n\tvec3\tspecularColor;\n#ifdef CLEARCOAT\n\tfloat clearcoat;\n\tfloat clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tvec3 sheenColor;\n#endif\n};\n#define MAXIMUM_SPECULAR_COEFFICIENT 0.16\n#define DEFAULT_SPECULAR_COEFFICIENT 0.04\nfloat clearcoatDHRApprox( const in float roughness, const in float dotNL ) {\n\treturn DEFAULT_SPECULAR_COEFFICIENT + ( 1.0 - DEFAULT_SPECULAR_COEFFICIENT ) * ( pow( 1.0 - dotNL, 5.0 ) * pow( 1.0 - roughness, 2.0 ) );\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.specularRoughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3( 0, 1, 0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNL = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = ccDotNL * directLight.color;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tccIrradiance *= PI;\n\t\t#endif\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t\treflectedLight.directSpecular += ccIrradiance * material.clearcoat * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\t#ifdef USE_SHEEN\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_Sheen(\n\t\t\tmaterial.specularRoughness,\n\t\t\tdirectLight.direction,\n\t\t\tgeometry,\n\t\t\tmaterial.sheenColor\n\t\t);\n\t#else\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.normal, material.specularColor, material.specularRoughness);\n\t#endif\n\treflectedLight.directDiffuse += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNV = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular += clearcoatRadiance * material.clearcoat * BRDF_Specular_GGX_Environment( geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t\tfloat ccDotNL = ccDotNV;\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\tfloat clearcoatInv = 1.0 - clearcoatDHR;\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n\tBRDF_Specular_Multiscattering_Environment( geometry, material.specularColor, material.specularRoughness, singleScattering, multiScattering );\n\tvec3 diffuse = material.diffuseColor * ( 1.0 - ( singleScattering + multiScattering ) );\n\treflectedLight.indirectSpecular += clearcoatInv * radiance * singleScattering;\n\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}";
+
+ var lights_fragment_begin = "\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = normalize( vViewPosition );\n#ifdef CLEARCOAT\n\tgeometry.clearcoatNormal = clearcoatNormal;\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointDirectLightIrradiance( pointLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n\t\tdirectLight.color *= all( bvec3( pointLight.shadow, directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotDirectLightIrradiance( spotLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\tdirectLight.color *= all( bvec3( spotLight.shadow, directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalDirectLightIrradiance( directionalLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n\t\tdirectLight.color *= all( bvec3( directionalLight.shadow, directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 iblIrradiance = vec3( 0.0 );\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\tirradiance += getLightProbeIrradiance( lightProbe, geometry );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t}\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearcoatRadiance = vec3( 0.0 );\n#endif";
+
+ var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec3 lightMapIrradiance = texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tlightMapIrradiance *= PI;\n\t\t#endif\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getLightProbeIndirectIrradiance( geometry, maxMipLevel );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.normal, material.specularRoughness, maxMipLevel );\n\t#ifdef CLEARCOAT\n\t\tclearcoatRadiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness, maxMipLevel );\n\t#endif\n#endif";
+
+ var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\n#endif";
+
+ var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = vIsPerspective == 1.0 ? log2( vFragDepth ) * logDepthBufFC * 0.5 : gl_FragCoord.z;\n#endif";
+
+ var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";
+
+ var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t\tvarying float vIsPerspective;\n\t#else\n\t\tuniform float logDepthBufFC;\n\t#endif\n#endif";
+
+ var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n\t#else\n\t\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\n\t\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\t\tgl_Position.z *= gl_Position.w;\n\t\t}\n\t#endif\n#endif";
+
+ var map_fragment = "#ifdef USE_MAP\n\tvec4 texelColor = texture2D( map, vUv );\n\ttexelColor = mapTexelToLinear( texelColor );\n\tdiffuseColor *= texelColor;\n#endif";
+
+ var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif";
+
+ var map_particle_fragment = "#ifdef USE_MAP\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n\tvec4 mapTexel = texture2D( map, uv );\n\tdiffuseColor *= mapTexelToLinear( mapTexel );\n#endif";
+
+ var map_particle_pars_fragment = "#ifdef USE_MAP\n\tuniform mat3 uvTransform;\n\tuniform sampler2D map;\n#endif";
+
+ var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif";
+
+ var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";
+
+ var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal += ( morphNormal0 - normal ) * morphTargetInfluences[ 0 ];\n\tobjectNormal += ( morphNormal1 - normal ) * morphTargetInfluences[ 1 ];\n\tobjectNormal += ( morphNormal2 - normal ) * morphTargetInfluences[ 2 ];\n\tobjectNormal += ( morphNormal3 - normal ) * morphTargetInfluences[ 3 ];\n#endif";
+
+ var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\t#ifndef USE_MORPHNORMALS\n\tuniform float morphTargetInfluences[ 8 ];\n\t#else\n\tuniform float morphTargetInfluences[ 4 ];\n\t#endif\n#endif";
+
+ var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed += ( morphTarget0 - position ) * morphTargetInfluences[ 0 ];\n\ttransformed += ( morphTarget1 - position ) * morphTargetInfluences[ 1 ];\n\ttransformed += ( morphTarget2 - position ) * morphTargetInfluences[ 2 ];\n\ttransformed += ( morphTarget3 - position ) * morphTargetInfluences[ 3 ];\n\t#ifndef USE_MORPHNORMALS\n\ttransformed += ( morphTarget4 - position ) * morphTargetInfluences[ 4 ];\n\ttransformed += ( morphTarget5 - position ) * morphTargetInfluences[ 5 ];\n\ttransformed += ( morphTarget6 - position ) * morphTargetInfluences[ 6 ];\n\ttransformed += ( morphTarget7 - position ) * morphTargetInfluences[ 7 ];\n\t#endif\n#endif";
+
+ var normal_fragment_begin = "#ifdef FLAT_SHADED\n\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t#endif\n\t#ifdef USE_TANGENT\n\t\tvec3 tangent = normalize( vTangent );\n\t\tvec3 bitangent = normalize( vBitangent );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\ttangent = tangent * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\t\tbitangent = bitangent * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\t#endif\n\t#endif\n#endif\nvec3 geometryNormal = normal;";
+
+ var normal_fragment_maps = "#ifdef OBJECTSPACE_NORMALMAP\n\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( TANGENTSPACE_NORMALMAP )\n\t#ifdef USE_TANGENT\n\t\tmat3 vTBN = mat3( tangent, bitangent, normal );\n\t\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t\tmapN.xy = normalScale * mapN.xy;\n\t\tnormal = normalize( vTBN * mapN );\n\t#else\n\t\tnormal = perturbNormal2Arb( -vViewPosition, normal, normalScale, normalMap );\n\t#endif\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd() );\n#endif";
+
+ var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef OBJECTSPACE_NORMALMAP\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec2 normalScale, in sampler2D normalMap ) {\n\t\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\n\t\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tfloat scale = sign( st1.t * st0.s - st0.t * st1.s );\n\t\tvec3 S = normalize( ( q0 * st1.t - q1 * st0.t ) * scale );\n\t\tvec3 T = normalize( ( - q0 * st1.s + q1 * st0.s ) * scale );\n\t\tvec3 N = normalize( surf_norm );\n\t\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t\tmapN.xy *= normalScale;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tbool frontFacing = dot( cross( S, T ), N ) > 0.0;\n\t\t\tmapN.xy *= ( float( frontFacing ) * 2.0 - 1.0 );\n\t\t#else\n\t\t\tmapN.xy *= ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\t#endif\n\t\tmat3 tsn = mat3( S, T, N );\n\t\treturn normalize( tsn * mapN );\n\t}\n#endif";
+
+ var clearcoat_normal_fragment_begin = "#ifdef CLEARCOAT\n\tvec3 clearcoatNormal = geometryNormal;\n#endif";
+
+ var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n\t#ifdef USE_TANGENT\n\t\tmat3 vTBN = mat3( tangent, bitangent, clearcoatNormal );\n\t\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t\tmapN.xy = clearcoatNormalScale * mapN.xy;\n\t\tclearcoatNormal = normalize( vTBN * mapN );\n\t#else\n\t\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatNormalScale, clearcoatNormalMap );\n\t#endif\n#endif";
+
+ var clearcoat_normalmap_pars_fragment = "#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif";
+
+ var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nvec4 encodeHalfRGBA ( vec2 v ) {\n\tvec4 encoded = vec4( 0.0 );\n\tconst vec2 offset = vec2( 1.0 / 255.0, 0.0 );\n\tencoded.xy = vec2( v.x, fract( v.x * 255.0 ) );\n\tencoded.xy = encoded.xy - ( encoded.yy * offset );\n\tencoded.zw = vec2( v.y, fract( v.y * 255.0 ) );\n\tencoded.zw = encoded.zw - ( encoded.ww * offset );\n\treturn encoded;\n}\nvec2 decodeHalfRGBA( vec4 v ) {\n\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn (( near + viewZ ) * far ) / (( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}";
+
+ var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif";
+
+ var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";
+
+ var dithering_fragment = "#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";
+
+ var dithering_pars_fragment = "#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif";
+
+ var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif";
+
+ var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";
+
+ var shadowmap_pars_fragment = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n\t\treturn decodeHalfRGBA( texture2D( shadow, uv ) );\n\t}\n\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n\t\tfloat occlusion = 1.0;\n\t\tvec2 distribution = texture2DDistribution( shadow, uv );\n\t\tfloat hard_shadow = step( compare , distribution.x );\n\t\tif (hard_shadow != 1.0 ) {\n\t\t\tfloat distance = compare - distribution.x ;\n\t\t\tfloat variance = max( 0.00000, distribution.y * distribution.y );\n\t\t\tfloat softness_probability = variance / (variance + distance * distance );\t\t\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\t\t\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n\t\t}\n\t\treturn occlusion;\n\t}\n\tfloat texture2DShadowLerp( sampler2D depths, vec2 size, vec2 uv, float compare ) {\n\t\tconst vec2 offset = vec2( 0.0, 1.0 );\n\t\tvec2 texelSize = vec2( 1.0 ) / size;\n\t\tvec2 centroidUV = ( floor( uv * size - 0.5 ) + 0.5 ) * texelSize;\n\t\tfloat lb = texture2DCompare( depths, centroidUV + texelSize * offset.xx, compare );\n\t\tfloat lt = texture2DCompare( depths, centroidUV + texelSize * offset.xy, compare );\n\t\tfloat rb = texture2DCompare( depths, centroidUV + texelSize * offset.yx, compare );\n\t\tfloat rt = texture2DCompare( depths, centroidUV + texelSize * offset.yy, compare );\n\t\tvec2 f = fract( uv * size + 0.5 );\n\t\tfloat a = mix( lb, lt, f.y );\n\t\tfloat b = mix( rb, rt, f.y );\n\t\tfloat c = mix( a, b, f.x );\n\t\treturn c;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tfloat dx2 = dx0 / 2.0;\n\t\t\tfloat dy2 = dy0 / 2.0;\n\t\t\tfloat dx3 = dx1 / 2.0;\n\t\t\tfloat dy3 = dy1 / 2.0;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 17.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tshadow = (\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_VSM )\n\t\t\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif";
+
+ var shadowmap_pars_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n#endif";
+
+ var shadowmap_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * worldPosition;\n\t}\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * worldPosition;\n\t}\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * worldPosition;\n\t}\n\t#endif\n#endif";
+
+ var shadowmask_pars_fragment = "float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLight directionalLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tshadow *= all( bvec2( directionalLight.shadow, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLight spotLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tshadow *= all( bvec2( spotLight.shadow, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t}\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLight pointLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tshadow *= all( bvec2( pointLight.shadow, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#endif\n\t#endif\n\treturn shadow;\n}";
+
+ var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";
+
+ var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\t#ifdef BONE_TEXTURE\n\t\tuniform highp sampler2D boneTexture;\n\t\tuniform int boneTextureSize;\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tfloat j = i * 4.0;\n\t\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\t\ty = dy * ( y + 0.5 );\n\t\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\t\treturn bone;\n\t\t}\n\t#else\n\t\tuniform mat4 boneMatrices[ MAX_BONES ];\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tmat4 bone = boneMatrices[ int(i) ];\n\t\t\treturn bone;\n\t\t}\n\t#endif\n#endif";
+
+ var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";
+
+ var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif";
+
+ var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";
+
+ var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";
+
+ var tonemapping_fragment = "#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";
+
+ var tonemapping_pars_fragment = "#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nuniform float toneMappingWhitePoint;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\n#define Uncharted2Helper( x ) max( ( ( x * ( 0.15 * x + 0.10 * 0.50 ) + 0.20 * 0.02 ) / ( x * ( 0.15 * x + 0.50 ) + 0.20 * 0.30 ) ) - 0.02 / 0.30, vec3( 0.0 ) )\nvec3 Uncharted2ToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( Uncharted2Helper( color ) / Uncharted2Helper( vec3( toneMappingWhitePoint ) ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( ( color * ( 2.51 * color + 0.03 ) ) / ( color * ( 2.43 * color + 0.59 ) + 0.14 ) );\n}";
+
+ var uv_pars_fragment = "#ifdef USE_UV\n\tvarying vec2 vUv;\n#endif";
+
+ var uv_pars_vertex = "#ifdef USE_UV\n\tvarying vec2 vUv;\n\tuniform mat3 uvTransform;\n#endif";
+
+ var uv_vertex = "#ifdef USE_UV\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif";
+
+ var uv2_pars_fragment = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif";
+
+ var uv2_pars_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n#endif";
+
+ var uv2_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = uv2;\n#endif";
+
+ var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP )\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif";
+
+ var background_frag = "uniform sampler2D t2D;\nvarying vec2 vUv;\nvoid main() {\n\tvec4 texColor = texture2D( t2D, vUv );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include \n\t#include \n}";
+
+ var background_vert = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}";
+
+ var cube_frag = "uniform samplerCube tCube;\nuniform float tFlip;\nuniform float opacity;\nvarying vec3 vWorldDirection;\nvoid main() {\n\tvec4 texColor = textureCube( tCube, vec3( tFlip * vWorldDirection.x, vWorldDirection.yz ) );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\tgl_FragColor.a *= opacity;\n\t#include \n\t#include \n}";
+
+ var cube_vert = "varying vec3 vWorldDirection;\n#include \nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include \n\t#include \n\tgl_Position.z = gl_Position.w;\n}";
+
+ var depth_frag = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include \n#include \n#include \n#include \n#include \n#include \n#include \nvoid main() {\n\t#include \n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include \n\t#include \n\t#include \n\t#include \n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - gl_FragCoord.z ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( gl_FragCoord.z );\n\t#endif\n}";
+
+ var depth_vert = "#include \n#include \n#include \n#include \n#include \n#include \n#include \nvoid main() {\n\t#include \n\t#include \n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include \n\t\t#include \n\t\t#include \n\t#endif\n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n}";
+
+ var distanceRGBA_frag = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include \n#include \n#include \n#include \n#include \n#include \nvoid main () {\n\t#include \n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include \n\t#include \n\t#include \n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}";
+
+ var distanceRGBA_vert = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include \n#include \n#include \n#include \n#include \n#include \nvoid main() {\n\t#include \n\t#include \n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include \n\t\t#include \n\t\t#include \n\t#endif\n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\tvWorldPosition = worldPosition.xyz;\n}";
+
+ var equirect_frag = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include \nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV;\n\tsampleUV.y = asin( clamp( direction.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\tsampleUV.x = atan( direction.z, direction.x ) * RECIPROCAL_PI2 + 0.5;\n\tvec4 texColor = texture2D( tEquirect, sampleUV );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include \n\t#include \n}";
+
+ var equirect_vert = "varying vec3 vWorldDirection;\n#include \nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include \n\t#include \n}";
+
+ var linedashed_frag = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include \n#include \n#include \n#include \n#include \nvoid main() {\n\t#include \n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include \n\t#include \n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include \n\t#include \n\t#include \n\t#include \n}";
+
+ var linedashed_vert = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include \n#include \n#include \n#include \n#include \nvoid main() {\n\t#include \n\tvLineDistance = scale * lineDistance;\n\tvec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include \n\t#include \n\t#include \n}";
+
+ var meshbasic_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \nvoid main() {\n\t#include \n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\treflectedLight.indirectDiffuse += texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include \n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include \n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include \n\t#include \n\t#include \n\t#include \n}";
+
+ var meshbasic_vert = "#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \nvoid main() {\n\t#include \n\t#include \n\t#include \n\t#include \n\t#ifdef USE_ENVMAP\n\t#include \n\t#include \n\t#include \n\t#include \n\t#endif\n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n}";
+
+ var meshlambert_frag = "uniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \nvoid main() {\n\t#include \n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\treflectedLight.indirectDiffuse = getAmbientLightIrradiance( ambientLightColor );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;\n\t#else\n\t\treflectedLight.indirectDiffuse += vIndirectFront;\n\t#endif\n\t#include \n\treflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\n\t#else\n\t\treflectedLight.directDiffuse = vLightFront;\n\t#endif\n\treflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();\n\t#include \n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include \n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n}";
+
+ var meshlambert_vert = "#define LAMBERT\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \n#include \nvoid main() {\n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n\t#include \n}";
+
+ var meshmatcap_frag = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include \n#include \n#include \n#include \n#include \n#include