mirror of
https://github.com/scratchfoundation/paper.js.git
synced 2024-12-29 09:22:22 -05:00
63 lines
2 KiB
HTML
63 lines
2 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>Simplify</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 path;
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var textItem = new PointText({
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content: 'Click and drag to draw a line.',
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point: new Point(20, 30),
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fillColor: 'black',
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});
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function onMouseDown(event) {
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// If we produced a path before, deselect it:
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if (path) {
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path.selected = false;
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}
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// Create a new path and set its stroke color to black:
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path = new Path({
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segments: [event.point],
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strokeColor: 'black',
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// Select the path, so we can see its segment points:
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fullySelected: true
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});
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}
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// While the user drags the mouse, points are added to the path
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// at the position of the mouse:
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function onMouseDrag(event) {
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path.add(event.point);
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// Update the content of the text item to show how many
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// segments it has:
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textItem.content = 'Segment count: ' + path.segments.length;
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}
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// When the mouse is released, we simplify the path:
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function onMouseUp(event) {
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var segmentCount = path.segments.length;
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// When the mouse is released, simplify it:
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path.simplify(10);
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// Select the path, so we can see its segments:
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path.fullySelected = true;
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var newSegmentCount = path.segments.length;
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var difference = segmentCount - newSegmentCount;
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var percentage = 100 - Math.round(newSegmentCount / segmentCount * 100);
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textItem.content = difference + ' of the ' + segmentCount + ' segments were removed. Saving ' + percentage + '%';
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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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