new virtual Shape::intersect_bbox implementation of triangle-AABB intersection octree building updated and simplified with help of this new method octree made default for Python, it's currently much faster than kd-tree (both building and traversal)

/*
 * Pyrit Ray Tracer
 * file: noise.h
 *
 * Radek Brich, 2006-2007
 */

#ifndef NOISE_H
#define NOISE_H

#include "common.h"

Float perlin(Float x, Float y, Float z);

#endif