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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Multi Curve 1</title>
<link rel="stylesheet" href="../include/style.css">
</head>
<body>
<header>
Example from <a href="http://amzn.com/1430236655?tag=html5anim-20"><em>Foundation HTML5 Animation with JavaScript</em></a>
</header>
<canvas id="canvas" width="400" height="400"></canvas>
<aside>Refresh page for random curves.</aside>
<script>
window.onload = function () {
var canvas = document.getElementById('canvas'),
context = canvas.getContext('2d'),
points = [],
numPoints = 9;
//array of random point objects
for (var i = 0; i < numPoints; i++) {
points.push({
x: Math.random() * canvas.width,
y: Math.random() * canvas.height
});
}
//move to the first point
context.beginPath();
context.moveTo(points[0].x, points[0].y);
//and loop through each successive pair
for (i = 1; i < numPoints; i += 2) {
context.quadraticCurveTo(points[i].x, points[i].y,
points[i+1].x, points[i+1].y);
}
context.stroke();
};
</script>
</body>
</html>