forked from KolibriOS/kolibrios
58 lines
1.3 KiB
Lua
58 lines
1.3 KiB
Lua
|
--PICTURE: Pattern - Sierpinsky triangle v1.0
|
||
|
|
--by Richard Fhager
|
||
|
|
--http://hem.fyristorg.com/dawnbringer/
|
||
|
|
-- Email: dawnbringer@hem.utfors.se
|
||
|
|
-- MSN: annassar@hotmail.com
|
||
|
|
--
|
||
|
|
-- Copyright 2010 Richard Fhager
|
||
|
|
--
|
||
|
|
-- This program is free software; you can redistribute it and/or
|
||
|
|
-- modify it under the terms of the GNU General Public License
|
||
|
|
-- as published by the Free Software Foundation; version 2
|
||
|
|
-- of the License. See <http://www.gnu.org/licenses/>
|
||
|
|
|
||
|
|
-- This script was adopted from Evalion, a Javascript codecrafting/imageprocessing project
|
||
|
|
-- http://goto.glocalnet.net/richard_fhager/evalion/evalion.html
|
||
|
|
--
|
||
|
|
|
||
|
|
frac = {{1,1},{1,0}}
|
||
|
|
|
||
|
|
iter = 15
|
||
|
|
|
||
|
|
--
|
||
|
|
function pattern(x,y,p,n,i) -- Fractal Pattern V1.0 by Richard Fhager (mod allows for wrapping)
|
||
|
|
py = #p
|
||
|
|
px = #p[1]
|
||
|
|
while ((p[1+math.abs(math.floor(y*py))%py][1+math.abs(math.floor(x*px))%px]) == 1 and n<i) do
|
||
|
|
x=x*px-math.floor(x*px);
|
||
|
|
y=y*py-math.floor(y*py);
|
||
|
|
n = n+1
|
||
|
|
end
|
||
|
|
return 1 - n/i;
|
||
|
|
end
|
||
|
|
--
|
||
|
|
|
||
|
|
w, h = getpicturesize()
|
||
|
|
|
||
|
|
rp,gp,bp = getcolor(getforecolor())
|
||
|
|
|
||
|
|
for y = 0, h - 1, 1 do
|
||
|
|
for x = 0, w - 1, 1 do
|
||
|
|
|
||
|
|
ox = x / w;
|
||
|
|
oy = y / h;
|
||
|
|
|
||
|
|
f = pattern(ox,oy,frac,0,iter);
|
||
|
|
|
||
|
|
c = matchcolor(rp*f,gp*f,bp*f)
|
||
|
|
|
||
|
|
putpicturepixel(x, y, c);
|
||
|
|
|
||
|
|
end
|
||
|
|
updatescreen()
|
||
|
|
if (waitbreak(0)==1) then
|
||
|
|
return
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|