Turtle snow fall: Difference between revisions
From JSXGraph Wiki
A WASSERMANN (talk | contribs) No edit summary |
A WASSERMANN (talk | contribs) No edit summary |
||
| Line 59: | Line 59: | ||
* [http://www.mathcurve.com/fractals/koch/koch.shtml http://www.mathcurve.com/fractals/koch/koch.shtml] | * [http://www.mathcurve.com/fractals/koch/koch.shtml http://www.mathcurve.com/fractals/koch/koch.shtml] | ||
===The source code=== | |||
<source lang="javascript"> | |||
function side(size, level) { | |||
if (level==0) { | |||
t.fd(size); | |||
} else { | |||
side(size/3, level-1); | |||
t.lt(60); | |||
side(size/3, level-1); | |||
t.rt(120); | |||
side(size/3, level-1); | |||
t.lt(60); | |||
side(size/3, level-1); | |||
} | |||
} | |||
function snowflake(size, level) { | |||
(3).times(function() { | |||
side(size, level); | |||
t.rt(120); | |||
}); | |||
} | |||
t.ht(); | |||
function snow() { | |||
t.setPos(Math.random()*600-300,Math.random()*600-300); | |||
snowflake(30*Math.random(),Math.floor(Math.random()*4)); | |||
active = setTimeout(snow,50); | |||
} | |||
snow();</source> | |||
[[Category:Examples]] | [[Category:Examples]] | ||
[[Category:Turtle Graphics]] | [[Category:Turtle Graphics]] | ||
[[Category:Fractals]] | [[Category:Fractals]] | ||
Revision as of 11:10, 22 December 2008
References
The source code
function side(size, level) {
if (level==0) {
t.fd(size);
} else {
side(size/3, level-1);
t.lt(60);
side(size/3, level-1);
t.rt(120);
side(size/3, level-1);
t.lt(60);
side(size/3, level-1);
}
}
function snowflake(size, level) {
(3).times(function() {
side(size, level);
t.rt(120);
});
}
t.ht();
function snow() {
t.setPos(Math.random()*600-300,Math.random()*600-300);
snowflake(30*Math.random(),Math.floor(Math.random()*4));
active = setTimeout(snow,50);
}
snow();
