mirror of
https://github.com/scratchfoundation/paper.js.git
synced 2025-01-01 02:38:43 -05:00
82 lines
No EOL
2.2 KiB
HTML
82 lines
No EOL
2.2 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<title>Example</title>
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<link rel="stylesheet" href="../css/style.css">
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<script type="text/javascript">var root = '../../'</script>
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<script type="text/javascript" src="../../src/load.js"></script>
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<script type="text/paperscript" canvas="canvas">
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/////////////////////////////////////////////////////////////////////
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// Values
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var values = {
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radius: 10,
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tolerance: 5
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};
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checkValues();
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project.currentStyle = {
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strokeColor: 'black',
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strokeWidth: 5,
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strokeCap: 'round'
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};
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/////////////////////////////////////////////////////////////////////
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// Mouse handling
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var handle;
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function checkValues() {
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var min = values.radius * 2;
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if (values.tolerance < min) values.tolerance = min;
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handle = values.radius * 0.5522847498; // kappa
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}
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var path;
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function onMouseDown(event) {
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path = new Path();
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path.segments = [event.point, event.point];
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prevPoint = path.firstSegment.point;
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curPoint = path.lastSegment.point;
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curHandleSeg = null;
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}
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function onMouseUp(event) {
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// path.pointsToCurves(0, 0, 1, 0.001);
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}
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var curPoint, prevPoint, curHandleSeg;
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function onMouseDrag(event) {
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var point = event.point;
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var diff = (point - prevPoint).abs();
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if (diff.x < diff.y) {
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curPoint.x = prevPoint.x;
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curPoint.y = point.y;
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} else {
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curPoint.x = point.x;
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curPoint.y = prevPoint.y;
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}
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var normal = curPoint - prevPoint;
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normal.length = 1;
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if (curHandleSeg) {
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curHandleSeg.point = prevPoint + (normal * values.radius);
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curHandleSeg.handleIn = normal * -handle;
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}
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var minDiff = Math.min(diff.x, diff.y);
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if (minDiff > values.tolerance) {
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var point = curPoint - (normal * values.radius);
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var segment = new Segment(point, null, normal * handle);
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path.insert(path.segments.length - 1, segment);
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curHandleSeg = path.lastSegment;
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// clone as we want the unmodified one:
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prevPoint = curHandleSeg.point.clone();
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path.add(curHandleSeg);
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curPoint = path.lastSegment.point;
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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 keepalive="true"></canvas>
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</body> |