Generating well-shaped d-dimensional Delaunay meshes

  • Authors:
  • Xiang-Yang Li

  • Affiliations:
  • Department of Computer Science, Illinois Institute of Technology, 10 W. 31st Street, Chicago, IL

  • Venue:
  • Theoretical Computer Science - Computing and combinatorics
  • Year:
  • 2003

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Abstract

A d-dimensional simplicial mesh is a Delaunay triangulation if the circumsphere of each of its simplices does not contain any vertices inside. A mesh is well shaped if the maximum aspect ratio of all its simplices is bounded from above by a constant. It is a long-term open problem to generate well-shaped d-dimensional Delaunay meshes for a given polyhedral domain. In this paper, we present a refinement-based method that generates well-shaped d-dimensional Delaunay meshes for any PLC domain with no small input angles. Furthermore, we show that the generated well-shaped mesh has O(n) d-simplices, where n is the smallest number of d-simplices of any almost-good meshes for the same domain. Here a mesh is almost-good if each of its simplices has a bounded circumradius to the shortest edge length ratio.