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<html>
<head>
<title>Watt | JSXGraph Example</title>
<link rel="stylesheet" type="text/css" href="../../distrib/jsxgraph.css" />
<script type="text/javascript" src="../../distrib/jsxgraphcore.js"></script>
</head>
<body>
<div id="debug" style="display: none"></div>
<center>
<div style="width: 1000px;">
<div style="width:600px; height: 510px;">
<div id="jxgbox" class="jxgbox" style="width:600px; height:500px; text-align: left; float: left;"></div>
<div id="polynomials" style="display: none; width: 600px; height: 500px; margin-left: 10px; text-align: left; padding-left: -200px;"></div>
</div>
<div style="width: 800px; margin-top: 10px;">
<form>
<input type="button" onclick="computeLocus();" value="Calculate locus" />
</form>
</div>
</div>
</center>
<script type="text/javascript">
/* <![CDATA[ */
board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-12, 12, 12, -12], axis: true, grid: false, keepaspectratio: true});
A = board.create('point', [2,0]);
k1 = board.create('circle', [A, 5]);
c = board.create('functiongraph', [function (x) { return x*x*x;}]);
c.generatePolynomial = function(p) {
return [['(',p.symbolic.x,')^3 - ',p.symbolic.y].join('')];
};
D = board.create('glider', [0,0, c], {name: 'D'});
k2 = board.create('circle', [D, 4]);
I = board.create('intersection', [k1, k2, 0], {color: 'blue'});
m = board.create('midpoint', [I, D], {color: 'green'});
function computeLocus() {
board.create('locus', [m], {strokeColor: 'black', strokeWidth: '3px'});
}
/* ]]> */
</script>
<br/>
</body>
</html>
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