mirror of
https://github.com/scratchfoundation/paper.js.git
synced 2024-12-29 09:22:22 -05:00
103 lines
3.3 KiB
HTML
103 lines
3.3 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>Hit Testing</title>
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<link rel="stylesheet" href="../css/style.css">
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<script type="text/javascript" src="../../dist/paper-full.js"></script>
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<script type="text/paperscript" canvas="canvas">
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var values = {
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paths: 50,
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minPoints: 5,
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maxPoints: 15,
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minRadius: 30,
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maxRadius: 90
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};
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var hitOptions = {
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segments: true,
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stroke: true,
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fill: true,
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tolerance: 5
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};
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createPaths();
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function createPaths() {
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var radiusDelta = values.maxRadius - values.minRadius;
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var pointsDelta = values.maxPoints - values.minPoints;
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for (var i = 0; i < values.paths; i++) {
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var radius = values.minRadius + Math.random() * radiusDelta;
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var points = values.minPoints + Math.floor(Math.random() * pointsDelta);
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var path = createBlob(view.size * Point.random(), radius, points);
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var lightness = (Math.random() - 0.5) * 0.4 + 0.4;
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var hue = Math.random() * 360;
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path.fillColor = { hue: hue, saturation: 1, lightness: lightness };
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path.strokeColor = 'black';
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};
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}
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function createBlob(center, maxRadius, points) {
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var path = new Path();
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path.closed = true;
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for (var i = 0; i < points; i++) {
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var delta = new Point({
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length: (maxRadius * 0.5) + (Math.random() * maxRadius * 0.5),
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angle: (360 / points) * i
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});
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path.add(center + delta);
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}
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path.smooth();
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return path;
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}
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var segment, path;
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var movePath = false;
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function onMouseDown(event) {
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segment = path = null;
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var hitResult = project.hitTest(event.point, hitOptions);
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if (!hitResult)
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return;
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if (event.modifiers.shift) {
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if (hitResult.type == 'segment') {
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hitResult.segment.remove();
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};
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return;
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}
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if (hitResult) {
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path = hitResult.item;
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if (hitResult.type == 'segment') {
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segment = hitResult.segment;
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} else if (hitResult.type == 'stroke') {
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var location = hitResult.location;
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segment = path.insert(location.index + 1, event.point);
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path.smooth();
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}
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}
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movePath = hitResult.type == 'fill';
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if (movePath)
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project.activeLayer.addChild(hitResult.item);
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}
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function onMouseMove(event) {
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project.activeLayer.selected = false;
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if (event.item)
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event.item.selected = true;
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}
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function onMouseDrag(event) {
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if (segment) {
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segment.point += event.delta;
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path.smooth();
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} else if (path) {
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path.position += event.delta;
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}
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}
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</script>
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</head>
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<body>
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<canvas id="canvas" resize style="background:black"></canvas>
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</body>
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</html>
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