Envelopes of nonlinear geometry
Envelopes of nonlinear geometry
Optimized refinable enclosures of multivariate polynomial pieces
Computer Aided Geometric Design
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Given a composite spline surface, we show how to efficiently construct two matching triangulations that sandwich the surface. Such a two-sided enclosure, (s-, s+), supports collision detection, re-approximation for format conversion, meshing with tolerance, one-sided smoothing and silhouette detection as illustrated in Figure 2.