Wed, 27 Oct 2010 14:12:51 +0100
test_mandelbrot.lua: Remove some trailing whitespace
-- Code originally by Luiz Henrique de Figueiredo -- At http://lua-users.org/lists/lua-l/2010-10/msg00754.html -- Ported to lua-xpm by Matthew Wild local xpm = require "xpm"; local N=255 local pic = xpm.new(N,N); for i=1,N do local y=2-4*(i-1)/(N-1) for j=1,N do local x=-2+4*(j-1)/(N-1) local xc,yc=x,y local X,Y=0,0 local p=0 for n=1,255 do X,Y = X^2-Y^2+xc, 2*X*Y+yc if X^2+Y^2>4 then p=n break end end pic:setpixel(j, i, ("#%02x%02x%02x"):format(p,p,p)); end end pic:render(io.stdout);