Equiprojective Polyhedra

A convex polyhedron P is equiprojective if, for some k, the orthogonal projection (or “shadow”) of P in every direction, except those directions parallel to faces of P, is a k-gon. We address an open question posed by Shepherd [11], and reported in [5], by characterizing equiprojective polyhedra, and giving an O(n log n) time recognition algorithm.

• Type: Conference
• Year: 2003
• Where: CCCG
• Authors: Masud Hasan, Anna Lubiw
• Keywords: CCCG 2003, CCCG 2007, Convex Polyhedron, Orthogonal Projection, Time Recognition Algorithm