mirror of
https://github.com/Azgaar/Fantasy-Map-Generator.git
synced 2025-12-17 01:41:22 +01:00
397 lines
No EOL
13 KiB
JavaScript
397 lines
No EOL
13 KiB
JavaScript
class Rulers {
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constructor() {
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this.data = [];
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}
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create(Type, points) {
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const ruler = new Type(points);
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this.data.push(ruler);
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return ruler;
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}
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toString() {
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return this.data.map(ruler => ruler.toString()).join("; ");
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}
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fromString(string) {
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this.data = [];
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const rulers = string.split("; ");
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for (const rulerString of rulers) {
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const [type, pointsString] = rulerString.split(": ");
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const points = pointsString.split(" ").map(el => el.split(",").map(n => +n));
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const Type = type === "Ruler" ? Ruler :
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type === "Opisometer" ? Opisometer :
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type === "Planimeter" ? Planimeter : null;
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this.create(Type, points);
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}
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}
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draw() {
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this.data.forEach(ruler => ruler.draw());
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}
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undraw() {
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this.data.forEach(ruler => ruler.undraw());
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}
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remove(id) {
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if (id === undefined) return;
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const ruler = this.data.find(ruler => ruler.id === id);
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ruler.undraw();
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const rulerIndex = this.data.indexOf(ruler);
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rulers.data.splice(rulerIndex, 1);
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}
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}
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class Measurer {
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constructor(points) {
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this.points = points;
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this.id = rulers.data.length;
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}
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toString() {
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return this.constructor.name + ": " + this.points.join(" ");
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}
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getSize() {
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return rn(1 / scale ** .3 * 2, 2);
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}
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getDash() {
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return rn(30 / distanceScaleInput.value, 2);
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}
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drag() {
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const tr = parseTransform(this.getAttribute("transform"));
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const x = +tr[0] - d3.event.x, y = +tr[1] - d3.event.y;
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d3.event.on("drag", function() {
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const transform = `translate(${(x + d3.event.x)},${(y + d3.event.y)})`;
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this.setAttribute("transform", transform);
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});
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}
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addPoint(point) {
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const MIN_DIST = d3.event.sourceEvent.shiftKey ? 9 : 100;
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const prev = last(this.points);
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point = [point[0] | 0, point[1] | 0];
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const dist2 = (prev[0] - point[0]) ** 2 + (prev[1] - point[1]) ** 2;
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if (dist2 < MIN_DIST) return;
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this.points.push(point);
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this.updateCurve();
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this.updateLabel();
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}
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optimize() {
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const MIN_DIST2 = 900;
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const optimized = [];
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for (let i=0, p1 = this.points[0]; i < this.points.length; i++) {
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const p2 = this.points[i];
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const dist2 = !i || i === this.points.length-1 ? Infinity : (p2[0] - p1[0]) ** 2 + (p2[1] - p1[1]) ** 2;
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if (dist2 < MIN_DIST2) continue;
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optimized.push(p2);
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p1 = p2;
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}
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this.points = optimized;
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this.updateCurve();
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this.updateLabel();
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}
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undraw() {
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this.el?.remove();
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}
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}
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class Ruler extends Measurer {
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constructor(points) {
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super(points);
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}
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getPointsString() {
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return this.points.join(" ");
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}
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updatePoint(index, x, y) {
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this.points[index] = [x, y];
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}
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getPointId(x, y) {
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return this.points.findIndex(el => el[0] == x && el[1] == y);
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}
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pushPoint(i) {
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const [x, y] = this.points[i];
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i ? this.points.push([x, y]) : this.points.unshift([x, y]);
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}
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draw() {
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if (this.el) this.el.selectAll("*").remove();
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const points = this.getPointsString();
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const size = this.getSize();
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const dash = this.getDash();
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const el = this.el = ruler.append("g").attr("class", "ruler").call(d3.drag().on("start", this.drag)).attr("font-size", 10 * size);
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el.append("polyline").attr("points", points).attr("class", "white").attr("stroke-width", size)
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.call(d3.drag().on("start", () => this.addControl(this)));
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el.append("polyline").attr("points", points).attr("class", "gray").attr("stroke-width", rn(size * 1.2, 2)).attr("stroke-dasharray", dash);
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el.append("g").attr("class", "rulerPoints").attr("stroke-width", .5 * size).attr("font-size", 2 * size);
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el.append("text").attr("dx", ".35em").attr("dy", "-.45em").on("click", () => rulers.remove(this.id));
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this.drawPoints(el);
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this.updateLabel();
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return this;
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}
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drawPoints(el) {
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const g = el.select(".rulerPoints");
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g.selectAll("circle").remove();
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for (let i=0; i < this.points.length; i++) {
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const [x, y] = this.points[i];
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this.drawPoint(g, x, y, i);
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}
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}
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drawPoint(el, x, y, i) {
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const context = this;
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const circle = el.append("circle")
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.attr("r", "1em").attr("cx", x).attr("cy", y)
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.on("click", function() {context.removePoint(context, i)})
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.call(d3.drag().clickDistance(3).on("start", function() {context.dragControl(context, i)}));
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if (!this.isEdge(i)) circle.attr("class", "control");
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}
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isEdge(i) {
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return i === 0 || i === this.points.length-1;
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}
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updateLabel() {
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const length = this.getLength();
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const text = rn(length * distanceScaleInput.value) + " " + distanceUnitInput.value;
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const [x, y] = last(this.points);
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this.el.select("text").attr("x", x).attr("y", y).text(text);
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}
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getLength() {
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let length = 0;
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for (let i=0; i < this.points.length - 1; i++) {
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const [x1, y1] = this.points[i];
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const [x2, y2] = this.points[i+1];
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length += Math.hypot(x1 - x2, y1 - y2);
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}
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return length;
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}
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dragControl(context, pointId) {
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let edge = context.isEdge(pointId)
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let circle = context.el.select(`circle:nth-child(${pointId+1})`);
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const line = context.el.selectAll("polyline");
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let x0 = rn(d3.event.x, 1);
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let y0 = rn(d3.event.y, 1);
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let axis;
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d3.event.on("drag", function() {
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if (edge) {
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if (d3.event.dx < .1 && d3.event.dy < .1) return;
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context.pushPoint(pointId);
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context.drawPoints(context.el);
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if (pointId) pointId++;
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circle = context.el.select(`circle:nth-child(${pointId+1})`);
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edge = false;
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}
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const shiftPressed = d3.event.sourceEvent.shiftKey;
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if (shiftPressed && !axis) axis = Math.abs(d3.event.dx) > Math.abs(d3.event.dy) ? "x" : "y";
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const x = axis === "y" ? x0 : rn(d3.event.x, 1);
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const y = axis === "x" ? y0 : rn(d3.event.y, 1);
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if (!shiftPressed) {
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axis = null;
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x0 = x;
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y0 = y;
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}
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context.updatePoint(pointId, x, y);
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line.attr("points", context.getPointsString());
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circle.attr("cx", x).attr("cy", y);
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context.updateLabel();
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});
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}
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addControl(context) {
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const x = rn(d3.event.x, 1);
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const y = rn(d3.event.y, 1);
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const pointId = getSegmentId(context.points, [x, y]);
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context.points.splice(pointId, 0, [x, y]);
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context.drawPoints(context.el);
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context.dragControl(context, pointId);
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}
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removePoint(context, pointId) {
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this.points.splice(pointId, 1);
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if (this.points.length < 2) context.el.remove();
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else context.draw();
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}
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}
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class Opisometer extends Measurer {
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constructor(points) {
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super(points);
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}
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draw() {
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if (this.el) this.el.selectAll("*").remove();
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const size = this.getSize();
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const dash = this.getDash();
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const context = this;
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const el = this.el = ruler.append("g").attr("class", "opisometer").call(d3.drag().on("start", this.drag)).attr("font-size", 10 * size);
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el.append("path").attr("class", "white").attr("stroke-width", size);
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el.append("path").attr("class", "gray").attr("stroke-width", size).attr("stroke-dasharray", dash);
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const rulerPoints = el.append("g").attr("class", "rulerPoints").attr("stroke-width", .5 * size).attr("font-size", 2 * size);
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rulerPoints.append("circle").attr("r", "1em").call(d3.drag().on("start", function() {context.dragControl(context, 0)}));
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rulerPoints.append("circle").attr("r", "1em").call(d3.drag().on("start", function() {context.dragControl(context, 1)}));
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el.append("text").attr("dx", ".35em").attr("dy", "-.45em").on("click", () => rulers.remove(this.id));
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this.updateCurve();
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this.updateLabel();
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return this;
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}
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updateCurve() {
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lineGen.curve(d3.curveCatmullRom.alpha(.5));
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const path = round(lineGen(this.points));
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this.el.selectAll("path").attr("d", path);
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const left = this.points[0];
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const right = last(this.points);
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this.el.select(".rulerPoints > circle:first-child").attr("cx", left[0]).attr("cy", left[1]);
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this.el.select(".rulerPoints > circle:last-child").attr("cx", right[0]).attr("cy", right[1]);
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}
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updateLabel() {
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const length = this.el.select("path").node().getTotalLength();
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const text = rn(length * distanceScaleInput.value) + " " + distanceUnitInput.value;
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const [x, y] = last(this.points);
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this.el.select("text").attr("x", x).attr("y", y).text(text);
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}
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dragControl(context, rigth) {
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const MIN_DIST = d3.event.sourceEvent.shiftKey ? 9 : 100;
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let prev = rigth ? last(context.points) : context.points[0];
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d3.event.on("drag", function() {
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const point = [d3.event.x | 0, d3.event.y | 0];
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const dist2 = (prev[0] - point[0]) ** 2 + (prev[1] - point[1]) ** 2;
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if (dist2 < MIN_DIST) return;
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rigth ? context.points.push(point) : context.points.unshift(point);
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prev = point;
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context.updateCurve();
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context.updateLabel();
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});
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d3.event.on("end", function() {
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if (!d3.event.sourceEvent.shiftKey) context.optimize();
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});
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}
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}
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class Planimeter extends Measurer {
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constructor(points) {
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super(points);
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}
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draw() {
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if (this.el) this.el.selectAll("*").remove();
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const size = this.getSize();
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const el = this.el = ruler.append("g").attr("class", "planimeter").call(d3.drag().on("start", this.drag)).attr("font-size", 10 * size);
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el.append("path").attr("class", "planimeter").attr("stroke-width", size);
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el.append("text").on("click", () => rulers.remove(this.id));
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this.updateCurve();
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this.updateLabel();
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return this;
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}
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updateCurve() {
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lineGen.curve(d3.curveCatmullRomClosed.alpha(.5));
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const path = round(lineGen(this.points));
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this.el.selectAll("path").attr("d", path);
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}
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updateLabel() {
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if (this.points.length < 3) return;
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const polygonArea = rn(Math.abs(d3.polygonArea(this.points)));
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const unit = areaUnit.value === "square" ? " " + distanceUnitInput.value + "²" : " " + areaUnit.value;
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const area = si(polygonArea * distanceScaleInput.value ** 2) + " " + unit;
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const c = polylabel([this.points], 1.0);
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this.el.select("text").attr("x", c[0]).attr("y", c[1]).text(area);
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}
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}
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// Scale bar
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function drawScaleBar() {
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if (scaleBar.style("display") === "none") return; // no need to re-draw hidden element
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scaleBar.selectAll("*").remove(); // fully redraw every time
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const dScale = distanceScaleInput.value;
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const unit = distanceUnitInput.value;
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// calculate size
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const init = 100; // actual length in pixels if scale, dScale and size = 1;
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const size = +barSize.value;
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let val = init * size * dScale / scale; // bar length in distance unit
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if (val > 900) val = rn(val, -3); // round to 1000
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else if (val > 90) val = rn(val, -2); // round to 100
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else if (val > 9) val = rn(val, -1); // round to 10
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else val = rn(val) // round to 1
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const l = val * scale / dScale; // actual length in pixels on this scale
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scaleBar.append("line").attr("x1", 0.5).attr("y1", 0).attr("x2", l+size-0.5).attr("y2", 0).attr("stroke-width", size).attr("stroke", "white");
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scaleBar.append("line").attr("x1", 0).attr("y1", size).attr("x2", l+size).attr("y2", size).attr("stroke-width", size).attr("stroke", "#3d3d3d");
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const dash = size + " " + rn(l / 5 - size, 2);
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scaleBar.append("line").attr("x1", 0).attr("y1", 0).attr("x2", l+size).attr("y2", 0)
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.attr("stroke-width", rn(size * 3, 2)).attr("stroke-dasharray", dash).attr("stroke", "#3d3d3d");
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const fontSize = rn(5 * size, 1);
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scaleBar.selectAll("text").data(d3.range(0,6)).enter().append("text")
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.attr("x", d => rn(d * l/5, 2)).attr("y", 0).attr("dy", "-.5em")
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.attr("font-size", fontSize).text(d => rn(d * l/5 * dScale / scale) + (d<5 ? "" : " " + unit));
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if (barLabel.value !== "") {
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scaleBar.append("text").attr("x", (l+1) / 2).attr("y", 2 * size)
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.attr("dominant-baseline", "text-before-edge")
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.attr("font-size", fontSize).text(barLabel.value);
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}
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const bbox = scaleBar.node().getBBox();
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// append backbround rectangle
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scaleBar.insert("rect", ":first-child").attr("x", -10).attr("y", -20).attr("width", bbox.width + 10).attr("height", bbox.height + 15)
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.attr("stroke-width", size).attr("stroke", "none").attr("filter", "url(#blur5)")
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.attr("fill", barBackColor.value).attr("opacity", +barBackOpacity.value);
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fitScaleBar();
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}
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// fit ScaleBar to canvas size
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function fitScaleBar() {
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if (!scaleBar.select("rect").size() || scaleBar.style("display") === "none") return;
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const px = isNaN(+barPosX.value) ? .99 : barPosX.value / 100;
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const py = isNaN(+barPosY.value) ? .99 : barPosY.value / 100;
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const bbox = scaleBar.select("rect").node().getBBox();
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const x = rn(svgWidth * px - bbox.width + 10), y = rn(svgHeight * py - bbox.height + 20);
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scaleBar.attr("transform", `translate(${x},${y})`);
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} |