2011-03-19 20:11:06 -04:00
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<!DOCTYPE html>
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<html>
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<head>
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2013-06-02 16:41:10 -04:00
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<meta charset="UTF-8">
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2011-06-30 09:57:17 -04:00
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<title>Curve Time Parameterization</title>
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2011-05-05 11:25:17 -04:00
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<link rel="stylesheet" href="../css/style.css">
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2011-06-12 14:03:18 -04:00
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<script type="text/javascript" src="../../dist/paper.js"></script>
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2011-03-19 20:11:06 -04:00
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<script type="text/paperscript" canvas="canvas">
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var path = new Path();
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path.moveTo(200, 200);
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path.curveTo([170, 50], [300, 200]);
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path.strokeWidth = 1;
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path.strokeColor = 'black';
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var curve = path.curves[0];
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2011-03-20 07:41:58 -04:00
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2011-03-19 20:11:06 -04:00
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function onMouseMove(event) {
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2011-04-26 07:31:35 -04:00
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modifyCurve(event.point, true);
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2011-03-20 07:41:58 -04:00
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}
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2011-04-26 07:31:35 -04:00
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function modifyCurve(point, remove) {
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2011-03-20 07:41:58 -04:00
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curve.segment2.point = point;
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2011-03-19 20:11:06 -04:00
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var length = curve.length;
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var step = 10;
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2011-04-26 07:31:35 -04:00
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var iteratively = false;
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2011-06-20 13:17:07 -04:00
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var flatten = true;
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2011-03-20 07:41:58 -04:00
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var num = Math.floor(length / step);
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var prev = 0;
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2011-06-20 13:17:07 -04:00
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if (flatten) {
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2011-06-05 08:22:06 -04:00
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var clone = path.clone();
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2011-06-20 13:17:07 -04:00
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clone.flatten(step);
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2011-06-05 08:22:06 -04:00
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for (var i = 0; i < clone.segments.length; i++) {
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var point = clone.segments[i].point;
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var circle = new Path.Circle(point, step / 2);
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circle.strokeColor = 'red';
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if (remove)
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circle.removeOnMove();
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}
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clone.remove();
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} else {
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for (var i = 0, pos = 0; i <= num; i++, pos += step) {
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var t = iteratively
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2011-07-06 17:13:38 -04:00
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? curve.getParameterAt(step, prev)
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: curve.getParameterAt(pos);
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2013-01-28 19:30:28 -05:00
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var point = curve.getPointAt(t, true);
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2011-06-05 08:22:06 -04:00
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var circle = new Path.Circle(point, step / 2);
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circle.strokeColor = 'red';
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if (remove)
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circle.removeOnMove();
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prev = t;
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}
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2011-03-19 20:11:06 -04:00
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}
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}
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2011-03-20 07:41:58 -04:00
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2011-04-26 07:31:35 -04:00
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// modifyCurve(new Point(400, 377), false);
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2011-03-20 07:41:58 -04:00
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2011-03-19 20:11:06 -04:00
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</script>
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</head>
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<body>
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2011-06-29 07:44:06 -04:00
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<canvas id="canvas" resize></canvas>
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2011-05-30 18:27:39 -04:00
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</body>
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</html>
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