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Realtime Shadow Feedback for Interactive Radiosity Scenes Using Shaded Multipoints
|Association for Computing Machinery -ACM-, Special Interest Group on Graphics -SIGGRAPH-; Association for Computing Machinery -ACM-, Special Interest Group on Computer and Human Interaction -SIGCHI-:|
ACM Symposium on Virtual Reality Software and Technology 1998
New York: ACM Press, 1998
|Symposium on Virtual Reality Software and Technology (VRST) <1998, Taipei, Taiwan>|
|Fraunhofer IGD ()|
| interaction; Multipoints; radiosity; Realtime Shadow Update|
Although several methods for updating radiosity shadows in interactive scenarios have been proposed in literature, radiosity shadows are still too slow to provide realtime shadow feedback. But, shadow feedback is often desired also during user interaction. Realtime shadow methods usually are very different from the radiosity approach; therefore, both methods cannot be combined in a common system in a meaningful way. In this paper, we introduce a new method for calculating realtime shadows based on the idea of shaded multipoints. This method works on the same data structures as the radiosity process does. It provides realtime shadows during user interaction, and still enables correct soft radiosity shadows after the interaction has been finished. The visual appearance of the realtime shadows is similar to the radiosity shadows.