paper
Version:
The Swiss Army Knife of Vector Graphics Scripting
71 lines (65 loc) • 2.27 kB
HTML
<html>
<head>
<meta charset="UTF-8">
<title>Smoothing</title>
<link rel="stylesheet" href="../css/style.css">
<script type="text/javascript" src="../../dist/paper-full.js"></script>
<script type="text/paperscript" canvas="canvas">
var width, height, center;
var points = 10;
var smooth = true;
var path = new Path({
fillColor: 'black'
});
var mousePos = view.center / 2;
var pathHeight = mousePos.y;
initializePath();
function initializePath() {
center = view.center;
width = view.size.width;
height = view.size.height / 2;
path.segments = [];
path.add(view.bounds.bottomLeft);
for (var i = 1; i < points; i++) {
var point = new Point(width / points * i, center.y);
path.add(point);
}
path.add(view.bounds.bottomRight);
path.fullySelected = true;
}
function onFrame(event) {
pathHeight += (center.y - mousePos.y - pathHeight) / 10;
for (var i = 1; i < points; i++) {
var sinSeed = event.count + (i + i % 10) * 100;
var sinHeight = Math.sin(sinSeed / 200) * pathHeight;
var yPos = Math.sin(sinSeed / 100) * sinHeight + height;
path.segments[i].point.y = yPos;
}
if (smooth)
path.smooth({ type: 'continuous' });
}
function onMouseMove(event) {
mousePos = event.point;
}
function onMouseDown(event) {
smooth = !smooth;
if (!smooth) {
// If smooth has been turned off, we need to reset
// the handles of the path:
for (var i = 0, l = path.segments.length; i < l; i++) {
var segment = path.segments[i];
segment.handleIn = segment.handleOut = null;
}
}
}
// Reposition the path whenever the window is resized:
function onResize(event) {
initializePath();
}
</script>
</head>
<body>
<canvas id="canvas" resize></canvas>
</body>
</html>