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On the Degree of Vertices in a Shadow Volume Silhouette

Tomas Akenine-Möller ; Ulf Assarsson (Institutionen för datorteknik)
Journal of Graphics Tools (1086-7651). Vol. 8 (2003), 4, p. 21-24.
[Artikel, refereegranskad vetenskaplig]

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.



Denna post skapades 2013-02-15. Senast ändrad 2017-10-03.
CPL Pubid: 173690

 

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Institutioner (Chalmers)

Institutionen för datorteknik (2002-2004)

Ämnesområden

Datorteknik

Chalmers infrastruktur