This set of classes allows you to take an IC layout like this:

along with a description of the fabrication process, and produce a cross-section like this:

The fastest way to get started is to look at test.py and modify it to suit your needs. There are three distinct parts to it:

• Load a GDS file and its layer map

• Execute process steps (deposition, diffusion, etc) using data from the GDS layers

• Present the resulting cross-section choosing color, hatching patterns, etc.

Inspiration came from the XSection plugin for KLayout.