remove forgotten noise.h includes common_ply.h: ignore invalid faces with duplicated points (this solves visual flaws in dragon model) extend loadShape for loading triangles realtime_dragon.cc demo: add kd-tree dump/load functionality, add colored perlin cloud texture

material and texture classes moved to material.(cc,h) 2D texture mappings from textures.cc polished and moved to material.h add ColourMap class and subclasses to make textures more flexible two example textures: CheckersTexture and CloudTexture (using Perlin noise)

move shapes to extra source file add serialize header and source file with common serialization functions dump/load feature for shapes and kd-tree fix few minor bugs

rewrite subsampling from old code to DefaultSampler render in phases, clean workers after each phase

kd-tree: move recursive build subroutine from KdNode to KdTree

unify capitalization of method names in C++ and Python

kd-tree traversal - avoid dynamic memory allocation use minimum storage size for KdNode (8B on 32bit cpu) vector.h - add division operator, fix semicolons

correct camera angle of view render_nff.py - polygonal patches

kd-tree building - check all axes for best split, add additional shape-bbox check extent Container bounds by Eps to fix invisible triangles on borders new Camera constructor with more intuitive lookat/up vectors fix camera axes (mirrored images) better camera angle-of-view change capitalization of addShape and addLight

simplify kd-tree building, it's also much faster now