I have a shape defined by an array of 2D points (clockwise around the shape) and a height value. The points conform to a grid layout with whole numbers, however there can be negative space in the shape. A simple example generated could be like the various blocks from Tetris.
I need to create surfaces and tris to fill the top side of the shape (the face that looks like a Tetris block) but I don’t know how to break down the edge definition points into rectangles so I can create surfaces to cover it.
I’m sure this has been asked before but I don’t know how to phrase it to find what I need.
The term you’re looking for is “polygon triangulation”. The Wikipedia article explains a couple of algorithms.