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@garciadelcastillo
Created December 12, 2014 15:21
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Sketchpad.js - Point.along
<!DOCTYPE html>
<meta charset="utf-8">
<html>
<head>
<link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
<div id="sketchpadDiv">
<canvas id="sketchpadCanvas"></canvas>
</div>
</body>
<script type="text/javascript" src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
<script type="text/javascript" src="http://www.garciadelcastillo.es/sketchpad/sketchpad.js"></script>
<script type="text/javascript" src="sketch.js"></script>
</html>
// Create new instance of Sketchpad in target Canvas
var pad = new Sketchpad('sketchpadCanvas');
// Create a Line between two Nodes
var A = new pad.Node(160, 200),
B = new pad.Node(480, 200),
AB = pad.Line.between(A, B);
// Create a Point at 3/4 the length of the Line, and use it as center of a Circle
var C = pad.Point.along(AB, 0.75),
bigCircle = pad.Circle.centerRadius(C, 51);
// Create a Point at 1/4 the length of that Circle, and draw another Circle
var D = pad.Point.along(bigCircle, 0.25),
smallCircle = pad.Circle.centerRadius(D, 26);
// Display Tags only on Node elements
pad.tagNodes();
body {
margin: 0;
padding: 0;
}
#sketchpadDiv {
position: absolute;
width: 100%;
height: 100%;
border: 1px solid #000;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
#sketchpadCanvas {
position: absolute;
}
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