| 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>HslColor</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 | var steps = {
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| 10 | hue: 100,
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| 11 | saturation: 20,
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| 12 | lightness: 3
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| 13 | };
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| 14 |
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| 15 | for (var i = 0; i < steps.lightness; i++) {
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| 16 | var radius = view.size.width / steps.lightness * 0.45;
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| 17 | var offset = new Point(view.size.width / steps.lightness, 0);
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| 18 | var position = view.bounds.leftCenter + offset * (i + 0.5);
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| 19 | var lightness = 1 - (i + 1) / (steps.lightness + 1);
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| 20 | createWheel(position, radius, steps, lightness);
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| 21 | };
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| 22 |
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| 23 | function createWheel(center, radius, steps, lightness) {
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| 24 | var hUnit = 360 / steps.hue;
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| 25 | for (var h = 0; h < steps.hue; h++) {
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| 26 | var hue = h * hUnit;
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| 27 | var vector = new Point({
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| 28 | angle: hue - 90,
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| 29 | length: radius
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| 30 | });
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| 31 | path = new Path(new Point(), vector.rotate(hUnit / 2));
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| 32 | path.closed = true;
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| 33 | path.arcTo(vector, vector.rotate(hUnit / -2));
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| 34 | path.position += center;
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| 35 | var colors = [];
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| 36 | for (var i = 0; i < steps.saturation; i++) {
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| 37 | var saturation = i / steps.saturation;
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| 38 | var color = { hue: hue, saturation: saturation, lightness: lightness };
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| 39 | colors.push(color);
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| 40 | }
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| 41 | var gradient = new Gradient(colors, true);
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| 42 | var from = center;
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| 43 | var to = center + vector;
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| 44 | var gradientColor = new Color(gradient, from, to);
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| 45 | path.fillColor = path.strokeColor = gradientColor;
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| 46 | }
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| 47 | }
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| 48 | </script>
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| 49 | </head>
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| 50 | <body>
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| 51 | <canvas id="canvas" resize style="background:black"></canvas>
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| 52 | </body>
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| 53 | </html> |
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