/prog/ - Barnsley's Fern

Name: Anonymous 2009-06-13 17:31

Minimal Barnsley's Fern (lolwikipedia) in html and javascript:



<html><script>n=u=v=0

function i(){t=document.body.lastChild.getContext('2d')

t.fillStyle='green'

r=Math.random()*99

x=u,y=v

u=x*.85+y/25,v=y*.85-x/25+1.6

if(r<14)u=y/3-x/7,v=x/4+y/4+.4

if(r<7)u=x/5-y/4,v+=1.3

if(r<1)u=0,v=y/6

t.fillRect(50*u+140,525-50*v,1,1)

if(n<2e5)if(n++%99)i()

else setTimeout(i,1)}onload=i</script><canvas height=550></html>

Works on modern browsers (well, ok, works on Firefox and probably Chrome). It's also 348 bytes. Can anyone do better?

Name: Anonymous 2011-12-07 10:02

To the OP: Because most browsers clamp the minimum setTimeout/setInterval delay value to 10ms, even if you use a lower value, the upper bound is 100 timer-based function calls per second, which directly translates to a maximum of 100 pixels per second. If you were to fill multiple pixels in one call of i(), you could increase runtime speed.

Barnsley's Fern

1 Name: Anonymous 2009-06-13 17:31

135 Name: Anonymous 2011-12-07 10:02

Name: Anonymous 2009-06-13 17:31

Name: Anonymous 2011-12-07 10:02