kd-tree traversal - avoid dynamic memory allocation
use minimum storage size for KdNode (8B on 32bit cpu)
vector.h - add division operator, fix semicolons
#!/usr/bin/python
from raytracer import Raytracer, Light, Sphere, Triangle, NormalVertex, Material
from objreader import LoadWavefrontObjFile
import Image
rt = Raytracer()
mat = Material(colour=(0.9, 0.9, 0.9))
LoadWavefrontObjFile(rt, "../models/obj/sphere.obj", mat, 1.5)
light1 = Light(position=(0.0, 2.0, 6.0), colour=(0.9, 0.3, 0.6))
light1.castshadows(False);
rt.addlight(light1)
light2 = Light(position=(-2.0, -5.0, 7.0), colour=(0.7, 1.0, 0.3))
light2.castshadows(False);
rt.addlight(light2)
imagesize = (800, 600)
data = rt.render(imagesize)
img = Image.fromstring("RGB", imagesize, data)
img.save('triangles_sphere.png')