Ray Tracing, Bounding Volume Hierarchy, Bvh, Axis Aligned, Tetrahedron Octahedron.
requires only three planes. Note the additional definition of the -(x+y) axis. We could use arbitrary oriented axes, but using the coordinate systems main axes x, y, and a simple combination of -(x+y) allows for easy conversion between coordinate systems. So it’s great we saved in 25% of space,