Chapter 7

Shadows

“All the variety, all the charm, all the beauty of life is made up of light and shadow.”

—Tolstoy

Shadows are important for creating realistic images and in providing the user with visual cues about object placement. This chapter focuses on the basic principles of computing shadows, and describes the most important and popular real-time algorithms for doing so. We also briefly discuss approaches that are less popular but embody important principles. We do not spend time in this chapter covering all options and approaches, as there are two comprehensive books that study the field of shadows in great depth [412, 1902]. Instead, we focus on surveying articles and presentations that have appeared since their publication, with ...

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