Sierpinski curve: Difference between revisions
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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> | ||
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<form><textarea id="inputtext" rows= | <form><textarea id="inputtext" rows=10 cols=35 wrap="off" style="width:600px;"> | ||
function halfSierpinski(s,l) { | function halfSierpinski(s,l) { | ||
if (l==0) { | if (l==0) { | ||
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[[Category:Turtle Graphics]] | [[Category:Turtle Graphics]] | ||
[[Category:Fractals]] | [[Category:Fractals]] | ||
[[Category:Curves]] | |||
Revision as of 12:05, 10 February 2009
References
The source code
function halfSierpinski(s,l) {
if (l==0) {
t.fd(s);
} else {
halfSierpinski(s,l-1);
t.lt(45);
t.fd(s*Math.sqrt(2));
t.lt(45);
halfSierpinski(s,l-1);
t.rt(90);
t.fd(s);
t.rt(90);
halfSierpinski(s,l-1);
t.lt(45);
t.fd(s*Math.sqrt(2));
t.lt(45);
halfSierpinski(s,l-1);
}
}
function sierpinski(s,l) {
halfSierpinski(s,l);
t.rt(90);
t.fd(s);
t.rt(90);
halfSierpinski(s,l);
t.rt(90);
t.fd(s);
t.rt(90);
}
t.cs();
t.ht();
level = 3;
t.setPos(0,-300);
sierpinski(150/Math.pow(2,level),level);
