Python: Selection of Face of a STL by Face Normal values : I want to write a script in Python which can generate facegroups in a STL as per the Face Normal value condition. For example, Provided is the snap of Stl, Different colour signifies the face group containing the triangular faces satisfying my given face normal threshold. Is there any simple way to do this in python?
[Face Group STL][1]


  [1]: https://i.stack.imgur.com/rRpWA.jpg