Provably good mesh generation

  • Authors:
  • Marshall Bern;David Eppstein;John Gilbert

  • Affiliations:
  • -;-;-

  • Venue:
  • Journal of Computer and System Sciences - Special issue: 31st IEEE conference on foundations of computer science, Oct. 22–24, 1990
  • Year:
  • 1994

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Abstract

We study several versions of the problem of generating triangular meshes for finite element methods. We show how to triangulate a planar point set or polygonally bounded domain with triangles of bounded aspect ratio; how to triangulate a planar point set with triangles having no obtuse angles; how to triangulate a point set in arbitrary dimension with simplices of bounded aspect ratio; and how to produce a linear-size Delaunay triangulation of a multidimensional point set by adding a linear number of extra points. All our triangulations have size (number of triangles) within a constant factor of optimal and run in optimal time O(n log n + k) with input of size n and output of size k. No previous work on mesh generation simultaneously guarantees well-shaped elements and small total size.