3D Constructions

It is clear that C.a.R. is a 2D-program. However, users discovered that 3D can be done easily with some clever macros. E.g., one can device a macro that maps the x-y and y-z projections back into x-y-z, and from there computes a perspective image. With additional parameters, this image can be turned around and flipped.

Some constructions even use hidden lines and facets. This is done by conditional formatting or by making the objects invalid depending on certain expressions.