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1. Introduction.- 2. Imaging Geometry and the Gradient Space.- 3. The Basic Shadow Problem.- 4. Variations in Lighting.- 5. Shadows Falling on Polyhedra.- 6. Shadows Cast by Polyhedra.- 7. Shadow Geometry for Curved Surfaces.- 8. Generalized Cylinders.- 9. Contour Analysis for SHGCs.- 10. Shadow Geometry for Solids of Revolution.- 11. Shadow Geometry and Other Techniques.- 12. Conclusions.- Appendix A. Terminology and Notation.- Appendix B. Basic Shadow Problem in Orthography.- Appendix C. Basic Shadow Problem in Perspective.- Appendix D. Catalog of Straight Homogeneous GCs.- Appendix E. The Slant Theorem.- Appendix F. The Pivot Theorem.- Author Index.