KdNode implemented. Slow Traversal. Bugs with some cubes that are forgotten in tree building.
function triangleboxintersectiontest added to KDNode.cpp, let's groove !
KdTree still slow and with holes. Trying to show kdtree with checkbox
KD Node working (still need to verify triangle-box intersection algorithm)
Modified TriBox algorithm to remove unworking steps.
merged master with KD Tree. Some errors remaining with shadows