/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 2009-06-14 13:03

Another two bytes can be saved by rephrasing (x=u,u=x*.85+v/25,v=v*.85-x/25+1.6) to u=u*.85+v/25+0*(v=v*.85-u/25+1.6), which doesn't need the parentheses. It's now 323 bytes, and I doubt it's going to get much smaller.

<html><body onload="n=u=v=0,t=document.body.lastChild.getContext('2d');function i(){t.fillStyle='#070';r=Math.random()*99;r<14?r<1?(u=0,v/=6):v=u/4+v/4+(r<7?(u=u/5-v/4,1.7):(u=v/3-u/7,.4)):u=u*.85+v/25+0*(v=v*.85-u/25+1.6);t.fillRect(50*u+140,525-50*v,1,1);n++<2e5?n%99?i():setTimeout(i,0):1}i()"><canvas height=550></html>

Barnsley's Fern

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

25 Name: Anonymous 2009-06-14 13:03

Name: Anonymous 2009-06-13 17:31

Name: Anonymous 2009-06-14 13:03