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Unformatted text preview: that the approximations we made in our derivation are no longer valid. Bump maps look best when viewed from the normal direction since the geometric surface is not altered. As we look from the side or at the silhouette edge, we can see that the surface is unaltered. Also, anisotropic displacements such as scratches may not be modeled well as displacements in the normal direction. 1...
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- Spring '10
- Computer Graphics