ClaudiusMaximus (claudiusmaximus) wrote, @ 2008-06-29 16:58:00

ray42 as a Lua package using tolua


ray42 was nice as it was, but I got fed up with having to recompile each time I wanted to render a new scene, and C++ isn't a particularly friendly scene description language. So I'm now using tolua to make a Lua package from the core of ray42, and it seems to work ok.

This code:

require("ray")
require("materials")

local s = nil
for x = -1, 1 do for y = -1, 1 do for z = -1, 1 do
  local m
  if x*y*z == 0 then m = gold else m = cyan end
  local t = sphere3(m, 0.5):translate(v3(x,y,z)*1.5)
  if s ~= nil then s = s + t else s = t end
end end end
s = s:transform(rotate3(0.3,1,2) * rotate3(0.3,0,2) * rotate3(0.3,0,1))

local l = Lights3:new(rgb(0.25,0.25,0.25))
l:add(v3(-3,0,0), rgb(0.5,0.5,0.5))
l:add(v3( 3,0,0), rgb(0.5,0.5,0.5))
l:add(v3(0,-3,0), rgb(0.5,0.5,0.5))
l:add(v3(0, 3,0), rgb(0.5,0.5,0.5))
l:add(v3(0,0,-3), rgb(0.5,0.5,0.5))
l:add(v3(0,0, 3), rgb(0.5,0.5,0.5))

render3(s, l, 788, 576, 4/3, 2)

generates this image:



One small tip when using tolua with recent versions of g++: activate the -Wno-write-strings flag to avoid drowning in a flood of:

warning: deprecated conversion from string constant to 'char*'

It is quite boring writing wrappers for ray42's C++ template classes because tolua doesn't seem to understand templates, maybe I should be using tolua++ or some other tool entirely.

	psyclone 2008-07-01 02:15 (link)
	You've come a long way, baby. Seriously. (Reply to this) (Thread)

	claudiusmaximus 2008-07-11 06:50 (link)
	Was just yesterday reading some of my posts from 5 years ago, and I'm inclined to agree. Cheers! (Reply to this) (Parent) (Thread)

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