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<html>
<head>
<title>JSXGraph example</title>
<link rel="stylesheet" type="text/css" href="../distrib/jsxgraph.css" />
<script type="text/javascript" src="../distrib/jsxgraphcore.js"></script>
<!--<script type="text/javascript" src="../distrib/jsxgraphcore.js"></script>-->
</head>
<body>
<h2>Speed test with Bezier curves</h2>
<form><input type="button" onClick="speedtest()" value="Start speed test"></form>
<h2 id="output">fps: -</h2>
<div id="jxgbox" class="jxgbox" style="width:600px; height:600px;"></div>
<div id="debug" style="display:block;"></div>
<script type="text/javascript">
/* <![CDATA[ */
var board, i, p, col;
board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-4,4,4,-4], keepaspectratio:true, axis:true});
p = [];
for (i=0;i<2*3+1;i++) {
if (i%3==0) {
col = 'red';
} else {
col = 'blue';
}
if (i==0) {
p.push(board.createElement('point',[-3,3],{strokeColor:col,fillColor:col}));
} else {
p.push(board.createElement('point',[Math.random()*8-4,Math.random()*8-4],{strokeColor:col,fillColor:col}));
}
}
var c = board.createElement('curve', JXG.Math.Numerics.bezier(p),{strokecolor:'blue', name:"curve", strokeWidth:5, lastArrow:true});
count = 0;
maxcount = 1000;
sgn = 1;
startTime = 0;
unit = function() {
var len = p.length,
j = Math.floor(len*Math.random()),
now;
p[j].setPosition(JXG.COORDS_BY_USER, sgn*3*Math.random(), -sgn*3*Math.random());
board.update();
sgn *= -1;
count++;
if (count%100==0) {
now = new Date();
document.getElementById('output').innerHTML = "fps: " + (1000*count/(now.getTime()-startTime.getTime()));
}
if (count<maxcount)
setTimeout(unit,0);
}
speedtest = function() {
count = 0;
startTime = new Date();
var ti = setTimeout(unit,0);
};
/* ]]> */
</script>
</body>
</html>
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