HTML and CSS Reference
In-Depth Information
<head>
<meta charset="utf-8">
<title>Two Segments</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<canvas id="canvas" width="400" height="400"></canvas>
<script src="utils.js"></script>
<script src="segment.js"></script>
<script src="slider.js"></script>
<script>
window.onload = function () {
var canvas = document.getElementById('canvas'),
context = canvas.getContext('2d'),
segment0 = new Segment(100, 20),
segment1 = new Segment(100, 20),
slider0 = new Slider(-90, 90, 0),
slider1 = new Slider(-90, 90, 0);
segment0.x = 100;
segment0.y = 100;
slider0.x = 320;
slider0.y = 20;
slider0.captureMouse(canvas);
slider0.onchange = drawFrame;
slider1.x = 340;
slider1.y = 20;
slider1.captureMouse(canvas);
slider1.onchange = drawFrame;
function drawFrame () {
context.clearRect(0, 0, canvas.width, canvas.height);
segment0.rotation = slider0.value * Math.PI / 180;
segment1.rotation = slider1.value * Math.PI / 180;
segment1.x = segment0.getPin().x;
segment1.y = segment0.getPin().y;
segment0.draw(context);
segment1.draw(context);
slider0.draw(context);
slider1.draw(context);
}
drawFrame(); //call once for initial display
};
</script>
</body>
</html>
