Koch curve: Difference between revisions
From JSXGraph Wiki
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| Line 68: | Line 68: | ||
t.fd(x); | t.fd(x); | ||
} else { | } else { | ||
koch(x/3,level-1); | koch(x/3,level-1); | ||
t.lt(60); | t.lt(60); | ||
| Line 86: | Line 86: | ||
</source> | </source> | ||
[[Category:Examples]] | [[Category:Examples]] | ||
[[Category:Turtle Graphics]] | [[Category:Turtle Graphics]] | ||
[[Category:Fractals]] | [[Category:Fractals]] | ||
[[Category:Curves]] | [[Category:Curves]] | ||
Revision as of 14:22, 30 October 2009
References
Source code
var brd = JXG.JSXGraph.initBoard('box', {originX: 300, originY: 300, unitX: 1, unitY: 1});
var t = brd.createElement('turtle');
function run() {
brd.suspendUpdate();
var code = document.getElementById('inputtext').value;
if (code=='') { return; }
eval(code);
brd.unsuspendUpdate();
}
function clearturtle() {
t.cs();
}
run();
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);
