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A shell map is a bijective mapping between shell space and texture space that can be used to generate small-scale features on surfaces using a variety of modeling techniques. The method is based upon the generation of an offset surface and the construction of a tetrahedral mesh that fills the space between the base surface and its offset. By identifying a corresponding tetrahedral mesh in texture space, the shell map can be implemented through a straightforward barycentriccoordinate map between corresponding tetrahedra. The generality of shell maps allows texture space to contain geometric objects, procedural volume textures, scalar fields, or other shell-mapped objects.
Publications
- Serban D. Porumbescu, Brian Budge, Louis Feng, and Kenneth I. Joy, “Shell Maps”, ACM Transactions on Graphics:
Proceedings of SIGGRAPH 2005, 24(3), 626-633.
Examples
Modeling and rendering was done in Softimage XSI 4.
Whale Tail Vase
Base Mesh |
Texture Space |
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After Mapping
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Sand Bunny
Base Mesh |
Texture Space |
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After Mapping
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