Turtle snow fall: Difference between revisions
From JSXGraph Wiki
A WASSERMANN (talk | contribs) No edit summary |
A WASSERMANN (talk | contribs) No edit summary |
||
| Line 28: | Line 28: | ||
function snow() { | function snow() { | ||
t.setPos(Math.random()*600-300,Math.random()*600-300); | t.setPos(Math.random()*600-300,Math.random()*600-300); | ||
snowflake( | snowflake(50*Math.random(),Math.floor(Math.random()*4)); | ||
active = setTimeout(snow,50); | active = setTimeout(snow,50); | ||
} | } | ||
Revision as of 09:20, 23 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();
