Originally shared by Nathaniel Stenzel
It has been a while, but I made a little bit of progress on my STL rendering method approach to slicing an STL file into cutting or printing instructions. This is an example with an artec dragon.
The only problem is long skinny triangles or triangles flat in the slicing plane.
I would try to make a clipping plane. I would say a larger problem is if I can’t get the desired width and height for the virtual window. It is still a fun experiment though. 
Well if you are going for vector slices you are gonna need to do a plane/stl intersection to generate polys. The route planning is not simple once that is done.
What I find incredibly weird is how many slicers are written in perl or some other slow language leading to endless complaints over slow slicing.
@Daniel_Joyce I would say that perl is slow. Python is fast when it uses modules with compiled code. This was done in Python.