Slicing 4D Raytracer

A small 4D raytracer of the slicing kind — meaning that it shows you a small 3D slice of a 4D world. The gimmick of this raytracer is that it's entirely in first person. You can rotate on the WY plane so that you can turn the camera to look towards the fourth dimension. Concerning what you can do in it, you can sort of fly around and look at some hypercuboids and hyperspheres. There's also a litt…