The freestyler's job is to write style modules. Each style module is a piece of style
and it has to be written using the Python language. This document contains information
about the operators and tools provided by Freestyle.
Python documentation material can be found here:
www.python.org.
(the
tutorial is a good start.)
The operators you are about to use simulate the drawing process:
it is essential to have a clear idea of the data structures that are manipulated
as well as of the pipelined organization of these operators.
We therefore recommend to read the related
research paper
before starting.