packetize Phong shader
new scons config options:
simd=(yes|no) - allow/suppress explicit SSE
force_flags=(yes|no) - force use of specified flags instead of autodetected
profile=(yes|no) - enable gcc's profiling (-pg option)
check for pthread.h header, don't try to build without it
add fourth Vector3 component for better memory aligning
rename Vector3 to Vector
partialy SSE-ize Vector class (only fully vertical operations)
build static lib and python module in distinctive directories
to avoid collision of library file names on some platforms
#include <stdlib.h>
#include "raytracer.h"
#include "kdtree.h"
#include "common_sdl.h"
int main(int argc, char **argv)
{
Raytracer rt;
KdTree top;
Camera cam;
rt.setMaxDepth(3);
rt.setTop(&top);
Light light1(Vector(2.0, -5.0, -5.0), Colour(0.7, 0.3, 0.6));
light1.castShadows(false);
rt.addLight(&light1);
Light light2(Vector(-2.0, 10.0, 2.0), Colour(0.4, 0.6, 0.3));
light2.castShadows(false);
rt.addLight(&light2);
Material mat_sph(Colour(1.0, 1.0, 1.0));
for (int y=0; y<10; y++)
for (int x=0; x<10; x++)
rt.addShape(new Sphere(Vector(x*2-10, (Float)rand()/RAND_MAX*5.0, y*2-10), 0.45, &mat_sph));
rt.setCamera(&cam);
cam.setEye(Vector(0,0,10));
top.optimize();
loop_sdl(rt, cam);
}