Polygon intersection capture points and line segments

[zhuzhiyong8679]

At present, I have completed the code for intersection of polyhedra and passed the testing of point clouds and line segments. The triangle has not been completed yet. I know that my own strength is limited, so I hope to submit it to the discussion area, and everyone can improve and enrich it together. https://github.com/zhuzhiyong8679/vsg_polytope.git