Point-in-Polyhedron Test (2D and 3D)
Description
Function pip3d() tests whether a point in 3D space is
within, exactly on, or outside an enclosed surface defined by a triangular mesh.
Function pip2d() tests whether a point in 2D space is within, exactly on, or outside a polygon.
For a reference, see: Liu et al., A new point containment test algorithm based on preprocessing
and determining triangles, Computer-Aided Design 42(12):1143-1150.