Procedural Mesh Extrusion Tutorial

DISCLAIMER #1: Code presented here is pseudocode that does NOT necessarily reflect production Limit Theory code.

DISCLAIMER #2: This tutorial assumes you have at least basic knowledge of 3D geometry and related math.

This week, I’m writing as many procedural generation tutorials as I can to help out participants of #PROCJAM! Today, I’m going to explain how to extrude the triangles in a mesh. For the purpose of this tutorial, extrusion is the process of copying all of the verticies in a triangle and translating them in the direction of the surface normal, so that you end up with a triangular prism.

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