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Add example of radial gradients.

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Jonathan Puckey 2011-02-19 22:52:27 +01:00
parent c0a93a8b66
commit a41a762237
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examples/Animated/RadialRainbows.html Normal file
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Example</title>
<script type="text/javascript" src="../../lib/Bootstrap.js"></script>
<script type="text/javascript" src="../../src/Paper.js"></script>
<script type="text/javascript" src="../../src/tool/ToolEvent.js"></script>
<script type="text/javascript" src="../../src/tool/ToolHandler.js"></script>
<script type="text/javascript" src="../../src/tool/Tool.js"></script>
<script type="text/javascript" src="../../src/basic/Point.js"></script>
<script type="text/javascript" src="../../src/basic/Rectangle.js"></script>
<script type="text/javascript" src="../../src/basic/Size.js"></script>
<script type="text/javascript" src="../../src/basic/Matrix.js"></script>
<script type="text/javascript" src="../../src/document/Doc.js"></script>
<script type="text/javascript" src="../../src/item/Item.js"></script>
<script type="text/javascript" src="../../src/item/Group.js"></script>
<script type="text/javascript" src="../../src/item/Layer.js"></script>
<script type="text/javascript" src="../../src/item/PathStyle.js"></script>
<script type="text/javascript" src="../../src/path/Segment.js"></script>
<script type="text/javascript" src="../../src/path/PathItem.js"></script>
<script type="text/javascript" src="../../src/path/Path.js"></script>
<script type="text/javascript" src="../../src/path/Path.Constructors.js"></script>
<script type="text/javascript" src="../../src/color/Color.js"></script>
<script type="text/javascript" src="../../src/color/RGBColor.js"></script>
<script type="text/javascript" src="../../src/color/GrayColor.js"></script>
<script type="text/javascript" src="../../src/color/GradientColor.js"></script>
<script type="text/javascript" src="../../src/color/Gradient.js"></script>
<script type="text/javascript" src="../../src/color/GradientStop.js"></script>
<script>
window.onload = function() {
var canvas = document.getElementById('canvas');
var doc = new Doc(canvas);
var vector = new Point(doc.size.height, 0);
var point = new Point(doc.size).divide(2);
var gradient = new Gradient();
gradient.type = 'radial';
var gradientColor = new GradientColor(gradient, point, point.add(vector));
var colors = ['red', 'orange', 'yellow', 'green', 'blue'];
var stops = [];
for(var i = 0, l = colors.length; i < l * 15; i++) {
var stop = new GradientStop(colors[i % l], i / (l * 15));
stops.push(stop);
}
gradient.stops = stops;
var path = new Path.Rectangle(new Rectangle([0, 0], doc.size));
path.fillColor = gradientColor;
var mouseDown = false;
var tool = new Tool({
onMouseDown: function(event) {
mouseDown = true;
gradientColor.hilite = event.point;
},
onMouseDrag: function(event) {
gradientColor.hilite = event.point;
},
onMouseUp: function(event) {
mouseDown = false;
}
});
setInterval(draw, 30);
var grow = false;
var vector = new Point(150, 0);
function draw() {
if(grow && vector.length > 300) {
grow = false;
} else if(!grow && vector.length < 75) {
grow = true;
}
vector.length += (grow ? 1 : -1);
vector.angle += 5;
if(!mouseDown) {
gradientColor.hilite = point.add(vector);
doc.redraw();
}
}
}
</script>
</head>
<body>
<canvas id='canvas' width=1024 height=768></canvas>
</body>