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3D Game Engine Design, 2nd Edition
book

3D Game Engine Design, 2nd Edition

by David Eberly
November 2006
Intermediate to advanced content levelIntermediate to advanced
1040 pages
26h 31m
English
CRC Press
Content preview from 3D Game Engine Design, 2nd Edition
4.2 Geometric State 237
of scales, and T is a translation. Once a world transformation is computed as a
composition of local transformations to obtain M and T, you have to factor M =
LDR using the singular value decomposition—yet another expensive proposition.
Given the discussion of nonuniform scaling and the performance issues arising
from factorization and/or maintaining a consistent representation for transfor ma-
tions, in Wild Magic version 2, I decided to constrain the transformations to use only
uniform scaling. I have relaxed the constraint slightly in Wild Magic version 3. The
Spatial class stores three scale factors, but only the leaf nodes ...
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Publisher Resources

ISBN: 9781482267303