December 2012
Intermediate to advanced
631 pages
13h 10m
English
Content preview from Graphics Gems III (IBM Version)
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VI.10
DELTA FORM-FACTOR CALCULATION FOR THE CUBIC TETRAHEDRAL ALGORITHM
Jeffrey C. Beran-Koehn and Mark J. Pavicic, North Dakota State University, Fargo, North Dakota
Publisher Summary
The hemicube algorithm has become the most popular method of calculating radiosity solutions for complex environments containing hidden surfaces and shadows. The cubic tetrahedral algorithm replaces the hemicube with a cubic tetrahedron .This adaptation increases performance by reducing the number of projection planes from five to three, while maintaining the simplicity of the required clipping and projection operations. The cubic tetrahedral algorithm calculates the amount of light—landing on a patch from every other patch—by transforming the environment ...
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