Optional
epsilon: number = EPSILONan optional epsilon with a default value of 1e-6
For a particular model, a set of layer constraints sorted into taco/tortilla/transitivity types needed to be solved.
Given a FOLD object, find all instances of edges overlapping which classify as taco/tortillas to determine layer order.
due to the face_center calculation to determine face-edge sidedness, this is currently hardcoded to only work with convex polygons.
a FOLD object. vertices_coords should already be folded.