Abstract
The motion of lights and shadows In a computer-generated film gives spectacular effects. In our extensible director-oriented animation system MIRANIM, any motion may be applied to multiple virtual cameras and to various kinds of lights: directional lights, positional lights and spots. Light may be limited by conic and cylindric surfaces and fading lights may be controlled. Moreover objects may be non-convex, may have holes and may be translucent. Such possibilities mean that the restrictions imposed by a shadow algorithm must be avoided. The shadow algorithm, based on the Crow shadow volume algorithm, and its implementation in MIRANIM are described. Various problems and their solutions are discussed.
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Fortin, M., Léonard, N., Magnenat-Thalmann, N., Thalmann, D. (1985). Animating Lights and Shadows. In: Magnenat-Thalmann, N., Thalmann, D. (eds) Computer-Generated Images. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68033-8_5
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DOI: https://doi.org/10.1007/978-4-431-68033-8_5
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-68035-2
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