208
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GEO
2000
15 years 7 months ago
2000
: In feature modelling, constraints can be used to store design intent in a model. Interaction constraints are an important type of constraints, which limit the extent to which fea...
159
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SIGGRAPH
1992
ACM
15 years 10 months ago
1992
ACM
We describe a physically-based Monte Carlo technique for approximating bidirectional reflectance distribution functions (BRDFs) for a large class of geometries by directly simulat...