Edelsbrunner, Herbert, Mark Overmars, and Raimund Seidel. “Some Methods of Computational Geometry Applied to Computer Graphics.”https://doi.org/10.1016/0734-189X(84)90142-7__Computer Vision, Graphics, and Image Processing. Elsevier, 1984.https://doi.org/10.1016/0734-189X(84)90142-7 .