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

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−# Wavefron .obj file loader
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−
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−from pyrit import Triangle, NormalVertex
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−
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−def LoadWavefrontObjFile(rt, filename, mat, scale):
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−	vertices = []
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−	fp = file(filename)
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−	while True:
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−		ln = fp.readline()
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−		if ln == "":
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−			break;
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−		ln = ln.split()
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−		if ln[0] == "v":
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−			v = [scale*float(x) for x in ln[1:4]]
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−			vertices.append(tuple(v))
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−		if ln[0] == "f":
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−			f = [vertices[int(x)-1] for x in ln[1:4]]
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−			face = Triangle(NormalVertex(f[0]), NormalVertex(f[1]), NormalVertex(f[2]), mat)
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−			rt.addShape(face)