Difference between revisions of "Koch curve"

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<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
 
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
 
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
 
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxturtle.js"></script>
 
 
<form><textarea id="inputtext" rows=3 cols=35 wrap="off" style="width:600px;">
 
<form><textarea id="inputtext" rows=3 cols=35 wrap="off" style="width:600px;">
 
function koch(x,level) {
 
function koch(x,level) {
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<script language="JavaScript">
 
<script language="JavaScript">
 
var brd = JXG.JSXGraph.initBoard('box', {originX: 300, originY: 300, unitX: 1, unitY: 1});
 
var brd = JXG.JSXGraph.initBoard('box', {originX: 300, originY: 300, unitX: 1, unitY: 1});
var t = new JSXTurtleObj(brd);
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var t = brd.createElement('turtle');
 
function run() {
 
function run() {
 
   brd.suspendUpdate();
 
   brd.suspendUpdate();
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===References===
 
===References===
This example is from
+
* [http://www.mathcurve.com/fractals/koch/koch.shtml http://www.mathcurve.com/fractals/koch/koch.shtml]
* [http://de.wikipedia.org/wiki/Logo_(Programmiersprache) http://de.wikipedia.org/wiki/Logo_(Programmiersprache)]
 
  
 
===Source code===
 
===Source code===

Revision as of 16:09, 21 January 2009


References

Source code

function koch(x,level) {
    if (level<1) {
        t.fd(x);
    } else {
        koch(x/3,level-1);
        t.lt(60);
        koch(x/3,level-1);
        t.rt(120);
        koch(x/3,level-1);
        t.lt(60);
        koch(x/3,level-1);
    }
}

t.cs();
t.hideTurtle();
t.setPos(-250,0);
t.rt(90);
koch(400,7);