Best Paper: 19th International Meshing Roundtable
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Particle Systems for Adaptive, Isotropic Meshing of CAD Models
J.R. Bronson, J.A. Levine, R.T. Whitaker. In Proceedings of the 19th International Meshing Roundtable, Chattanooga, TN. October, 2010.
We present a particle-based approach for generating adaptive triangular
surface and tetrahedral volume meshes from CAD models. Input shapes are treated as a collection of smooth, parametric surface patches that can meet non-smoothly on boundaries. Our approach uses a hierarchical sampling scheme that places particles on features in order of increasing dimensionality. These particles reach a good distribution by minimizing an energy computed in 3D world space, with movements occurring in the parametric space of each surface patch.
Rather than using a pre-computed measure of feature size, our system automatically adapts to both curvature as well as a notion of topological separation. It also enforces a measure of smoothness on these constraints to construct a sizing fi eld that acts as a proxy to piecewise-smooth feature size. We evaluate our technique with comparisons against other popular triangular meshing techniques for this domain.
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