41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
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import polygonClipping from "polygon-clipping";
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import Action from "./Action";
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import {
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addPolygonDifferenceToShapes,
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addPolygonIntersectionToShapes,
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} from "../helpers/drawing";
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class CutShapeAction extends Action {
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constructor(shapes) {
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super();
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this.update = (shapesById) => {
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const actionGeom = shapes.map((actionShape) => [
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actionShape.data.points.map(({ x, y }) => [x, y]),
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]);
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let cutShapes = {};
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for (let shape of Object.values(shapesById)) {
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const shapePoints = shape.data.points.map(({ x, y }) => [x, y]);
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const shapeHoles = shape.data.holes.map((hole) =>
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hole.map(({ x, y }) => [x, y])
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);
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let shapeGeom = [[shapePoints, ...shapeHoles]];
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try {
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const difference = polygonClipping.difference(shapeGeom, actionGeom);
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const intersection = polygonClipping.intersection(
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shapeGeom,
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actionGeom
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);
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addPolygonDifferenceToShapes(shape, difference, cutShapes);
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addPolygonIntersectionToShapes(shape, intersection, cutShapes);
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} catch {
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console.error("Unable to find intersection for shapes");
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}
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}
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return cutShapes;
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};
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}
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}
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export default CutShapeAction;
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