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rotation and shift for resample

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Mészáros Gergely 2022-04-20 00:14:50 +02:00
parent bb00157f37
commit a6edd8e5fd
2 changed files with 64 additions and 18 deletions
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24
modules/ui/submap.js
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@ -47,10 +47,30 @@ window.UISubmap = (function () {
const resampleCurrentMap = debounce(function () {
// Resample the whole map to different cell resolution or shape
const cellNumId = Number(document.getElementById("submapPointsInput").value);
const angle = Number(document.getElementById("submapRotationAngle").value) / 180 * Math.PI;
const shiftX = Number(document.getElementById("submapShiftX").value);
const shiftY = Number(document.getElementById("submapShiftY").value);
const [cx, cy] = [graphWidth / 2, graphHeight / 2];
const rot = alfa => (x, y) => [
(x - cx) * Math.cos(alfa) - (y - cy) * Math.sin(alfa) + cx,
(y - cy) * Math.cos(alfa) + (x - cx) * Math.sin(alfa) + cy
];
const shift = (dx, dy) => (x, y) => [x + dx, y + dy];
const app = (f, g) => (x, y) => f(...g(x, y));
if (!cellsDensityConstants[cellNumId]) {
console.error("Unknown cell number!");
return;
}
let projection, inverse;
if (angle || shiftX || shiftY) {
projection = app(rot(angle), shift(shiftX, shiftY));
inverse = app(shift(-shiftX, -shiftY), rot(-angle));
} else {
projection = (x, y) => [x, y];
inverse = (x, y) => [x, y];
}
changeCellsDensity(cellNumId);
WARN && console.warn("Resampling current map");
startResample({
@ -61,8 +81,8 @@ window.UISubmap = (function () {
promoteTowns: false,
smoothHeightMap: false,
rescaleStyles: false,
projection: (x, y) => [x, y],
inverse: (x, y) => [x, y]
projection,
inverse,
});
}, 1000);