2011-02-21 08:31:26 -05:00
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<!DOCTYPE html>
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2011-02-19 16:52:27 -05:00
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<html>
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<head>
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2014-08-16 13:24:54 -04:00
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<meta charset="UTF-8">
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<title>Radial Rainbows</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 point = view.center;
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2011-07-07 10:09:02 -04:00
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2014-08-16 13:24:54 -04:00
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var colors = [];
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var cycles = 4;
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for (var i = 0, l = 60; i < l; i++) {
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var brightness = 1 - (i / l) * 1.5;
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var hue = i / l * cycles * 360;
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var color = {
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hue: hue,
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saturation: 1,
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brightness: brightness
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};
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colors.push(color);
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}
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2011-04-07 11:02:46 -04:00
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2014-08-16 13:24:54 -04:00
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var path = new Path.Rectangle(view.bounds);
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var gradient = new Gradient(colors, true);
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var radius = Math.max(view.size.width, view.size.height) * 0.75;
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path.fillColor = new Color(gradient, point, point + [radius, 0]);
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var gradientColor = path.fillColor;
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2011-07-07 10:09:02 -04:00
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2014-08-16 13:24:54 -04:00
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var mouseDown = false,
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mousePoint = view.center;
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2011-07-07 10:09:02 -04:00
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2014-08-16 13:24:54 -04:00
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function onMouseDown(event) {
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mouseDown = true;
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mousePoint = event.point;
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}
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2011-07-07 10:09:02 -04:00
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2014-08-16 13:24:54 -04:00
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function onMouseDrag(event) {
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mousePoint = event.point;
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}
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2011-07-07 10:09:02 -04:00
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2014-08-16 13:24:54 -04:00
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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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2011-07-07 10:09:02 -04:00
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2014-08-16 13:24:54 -04:00
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var grow = false;
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var vector = new Point(150, 0);
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2011-07-07 10:09:02 -04:00
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2014-08-16 13:24:54 -04:00
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function onFrame() {
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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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if (mouseDown) {
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point = point + (mousePoint - point) / 10;
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} else {
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vector.length += (grow ? 1 : -1);
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vector.angle += 5;
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}
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gradientColor.highlight = mouseDown ? point : point + vector;
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}
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2011-07-07 10:09:02 -04:00
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2014-08-16 13:24:54 -04:00
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function onResize(event) {
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point = view.center;
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path.bounds = view.bounds;
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var gradientColor = path.fillColor;
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gradientColor.origin = point;
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var radius = Math.max(view.size.width, view.size.height) * 0.75;
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gradientColor.destination = point + [radius, 0];
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}
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</script>
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2011-02-19 16:52:27 -05:00
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</head>
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<body>
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2014-08-16 13:24:54 -04:00
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<canvas id="canvas" hidpi="off" resize></canvas>
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2011-05-30 18:27:39 -04:00
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</body>
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2014-04-06 07:44:19 -04:00
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</html>
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