On the Degree of Vertices in a Shadow Volume Silhouette
Artikel i vetenskaplig tidskrift, 2003

In shadow volume rendering, the shadow volume silhouette edges are used to create primitives that model the shadow volume. A common misconception is that the vertices on such silhouettes can only be connected to two silhouette edges, i.e., have degree two. Furthermore, some believe that such a vertex can have any degree. In this short note, we present a geometric proof that shows that the degree of a silhouette vertex must be even, and not necessarily two.


Tomas Akenine-Möller

Ulf Assarsson

Chalmers, Institutionen för datorteknik

Journal of Graphics Tools

1086-7651 (ISSN)

Vol. 8 21-24