mirror of
https://github.com/scratchfoundation/paper.js.git
synced 2024-12-29 09:22:22 -05:00
82 lines
2.5 KiB
HTML
82 lines
2.5 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>Path Structure</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 y = view.size.height / 2;
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var width = view.size.width;
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var vector = new Point({
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angle: 45,
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length: width / 5
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});
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var offset = width / 30;
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var handleTexts = [];
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var path = new Path({
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segments: [
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[[offset, y], null, vector.rotate(-90)],
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[[width / 2, y], vector.rotate(-180), vector],
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[[width - offset, y], vector.rotate(90), null]
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],
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fullySelected: true
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});
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function onMouseMove(event) {
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var point = event.point.clone();
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// Constrain the event point, to not cut off the text:
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if (point.y < 22)
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point.y = 22;
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if (point.y > view.size.height - 24)
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point.y = view.size.height - 24;
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var delta = point - view.center;
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for (var i = 0; i < 2; i++) {
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var curve = path.curves[i];
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curve.handle1.y = curve.handle2.y = delta.y * (i % 2 ? 1 : -1);
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var firstPoint = curve.point1 + curve.handle1;
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var secondPoint = curve.point2 + curve.handle2;
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handleTexts[i * 2].point = secondPoint -
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(firstPoint.y < y ? [0, 10] : [0, -18]);
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handleTexts[i * 2 + 1].point = firstPoint -
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(firstPoint.y < y ? [0, 10] : [0, -18]);
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}
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}
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project.currentStyle.fillColor = 'black';
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for (var i = 0; i < 3; i++) {
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var segment = path.segments[i];
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var text = new PointText({
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point: segment.point - [0, 10],
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content: i,
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fontSize: 12,
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justification: 'center'
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});
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}
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for (var i = 0; i < 2; i++) {
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var handleInText = new PointText({
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content: 'handleIn',
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fontSize: 12,
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justification: 'center'
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});
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handleTexts.push(handleInText);
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var handleOutText = new PointText({
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content: 'handleOut',
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fontSize: 12,
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justification: 'center'
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});
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handleTexts.push(handleOutText);
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}
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// Call onMouseMove once to correctly position the text items:
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onMouseMove({
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point: view.center + vector.rotate(-90)
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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></canvas>
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</body>
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</html>
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