mirror of
https://github.com/scratchfoundation/paper.js.git
synced 2025-01-03 19:45:44 -05:00
71 lines
No EOL
1.8 KiB
HTML
71 lines
No EOL
1.8 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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<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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var vector = new Point(document.size.height, 0);
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var point = new Point(document.size) / 2;
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var colors = [];
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for (var i = 0, l = 60; i < l; i++) {
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var color = new RGBColor(1, 0, 0);
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var cycles = 4;
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color.hue = i / l * cycles * 360;
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colors.push(color);
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}
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var gradient = new Gradient(colors, 'radial');
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var gradientColor = new GradientColor(gradient, point, point + vector);
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var path = new Path.Rectangle(new Rectangle([0, 0], document.size));
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path.fillColor = gradientColor;
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tool.eventInterval = 30;
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var mouseDown = false;
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function onMouseDown(event) {
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point = point + vector;
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mouseDown = true;
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}
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function onMouseDrag(event) {
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point = point + (event.point - point) / 10;
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gradientColor.hilite = point;
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iterate();
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}
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function onMouseUp(event) {
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vector.length = 10;
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mouseDown = false;
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}
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var grow = false;
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var vector = new Point(150, 0);
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setInterval(draw, 30);
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function draw() {
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if (!mouseDown) {
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iterate();
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document.redraw();
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}
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}
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function iterate() {
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for (var i = 0, l = gradient.stops.length; i < l; i++)
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gradient.stops[i].color.hue -= 20;
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if (grow && vector.length > 300) {
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grow = false;
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} else if (!grow && vector.length < 75) {
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grow = true;
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}
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vector.length += (grow ? 1 : -1);
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vector.angle += 5;
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gradientColor.hilite = mouseDown ? point : point + vector;
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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' width=1024 height=768></canvas>
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</body> |