rename Python module from 'raytracer' to 'pyrit'
improve Python binding:
- new objects: Container, Octree, KdTree, Shape,
Pixmap, Sampler, DefaultSampler
- all shapes are now subclasses of Shape
- clean, remove redundant Getattr's
- Raytracer render method now just wraps C++ method
without doing any additional work
adjust all demos for changes in Python binding, remove PIL dependency
add demo_PIL.py as a example of pyrit + PIL usage
render_nff.py now either loads file given as a argument
or reads input from stdin otherwise
fix bug in pixmap float to char conversion
from math import *def dot(a,b): sum = 0 for i in range(min(len(a),len(b))): sum += a[i]*b[i] return sumdef cross(a,b): return ( a[1]*b[2] - a[2]*b[1], a[2]*b[0] - a[0]*b[2], a[0]*b[1] - a[1]*b[0] )def unit(a): m = mag(a) return (a[0]/m, a[1]/m, a[2]/m)def mag(a): return sqrt(mag2(a))def mag2(a): return a[0]*a[0] + a[1]*a[1] + a[2]*a[2]