On the degree of vertices in a shadow volume silhouette

Summary, in English

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.

• Författare: Tomas Akenine-Möller; Ulf Assarsson
• Avdelning/ar: Institutionen för datavetenskap; Parallella System
• Publiceringsår: 2003
• Språk: Engelska
• Sidor: 21-24
• Publikation/Tidskrift/Serie: Journal of Graphics Tools
• Volym: 8
• Issue: 4
• Länkar: http://dx.doi.org/10.1080/10867651.2003.10487591
• Dokumenttyp: Artikel i tidskrift
• Förlag: AK Peters
• Ämne: Computer Science
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 2151-237X