| 1 | <!DOCTYPE html>
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| 2 | <html>
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| 3 | <head>
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| 4 | <meta charset="UTF-8">
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| 5 | <title>Square Rounded</title>
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| 6 | <link rel="stylesheet" href="../css/style.css">
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| 7 | <script type="text/javascript" src="../../dist/paper.js"></script>
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| 8 | <script type="text/paperscript" canvas="canvas">
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| 9 | /////////////////////////////////////////////////////////////////////
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| 10 | // Values
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| 11 |
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| 12 | var values = {
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| 13 | radius: 10,
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| 14 | tolerance: 5
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| 15 | };
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| 16 |
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| 17 | checkValues();
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| 18 |
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| 19 | /////////////////////////////////////////////////////////////////////
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| 20 | // Mouse handling
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| 21 |
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| 22 | var handle;
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| 23 | function checkValues() {
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| 24 | var min = values.radius * 2;
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| 25 | if (values.tolerance < min) values.tolerance = min;
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| 26 | handle = values.radius * Numerical.KAPPA;
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| 27 | }
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| 28 |
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| 29 | var path;
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| 30 | function onMouseDown(event) {
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| 31 | path = new Path({
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| 32 | segments: [event.point, event.point],
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| 33 | strokeColor: 'black',
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| 34 | strokeWidth: 5,
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| 35 | strokeCap: 'round'
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| 36 | });
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| 37 | prevPoint = path.firstSegment.point;
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| 38 | curPoint = path.lastSegment.point;
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| 39 | curHandleSeg = null;
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| 40 | }
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| 41 |
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| 42 | var curPoint, prevPoint, curHandleSeg;
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| 43 | function onMouseDrag(event) {
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| 44 | var point = event.point;
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| 45 | var diff = (point - prevPoint).abs();
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| 46 | if (diff.x < diff.y) {
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| 47 | curPoint.x = prevPoint.x;
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| 48 | curPoint.y = point.y;
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| 49 | } else {
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| 50 | curPoint.x = point.x;
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| 51 | curPoint.y = prevPoint.y;
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| 52 | }
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| 53 | var normal = curPoint - prevPoint;
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| 54 | normal.length = 1;
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| 55 | if (curHandleSeg) {
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| 56 | curHandleSeg.point = prevPoint + (normal * values.radius);
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| 57 | curHandleSeg.handleIn = normal * -handle;
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| 58 | }
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| 59 | var minDiff = Math.min(diff.x, diff.y);
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| 60 | if (minDiff > values.tolerance) {
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| 61 | var point = curPoint - (normal * values.radius);
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| 62 | var segment = new Segment(point, null, normal * handle);
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| 63 | path.insert(path.segments.length - 1, segment);
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| 64 | curHandleSeg = path.lastSegment;
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| 65 | // clone as we want the unmodified one:
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| 66 | prevPoint = curHandleSeg.point.clone();
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| 67 | path.add(curHandleSeg);
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| 68 | curPoint = path.lastSegment.point;
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| 69 | }
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| 70 | }
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| 71 | </script>
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| 72 | </head>
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| 73 | <body>
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| 74 | <canvas id="canvas" resize></canvas>
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| 75 | </body>
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| 76 | </html> |
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