I am working with a 2D unstructured mesh using sieve and I wanted to get some advice on how to determine adjacency relations using the topological operators provided by Sieve (cone, support, closure, star). I have figured out the following:
Vertices for a given edge: cone(edge) Cells for a given edge: support(edge) Cells for a given vertex: star(vertex) \ support(vertex) Edges for a given vertex: support(vertex) Edges for a given cell: cone(cell) Vertices for a given cell: closure(cell) \ cone(cell) The set of edges associated with the cells for a given edge: U cone(support(edge)) - ie the union of the cones of the support of the edge Are there other topological operators that more naturally express these relations (especially the ones involving unions or complements)? -- Chris Eldred DOE Computational Science Graduate Fellow Graduate Student, Atmospheric Science, Colorado State University B.S. Applied Computational Physics, Carnegie Mellon University, 2009 chris.eldred at gmail.com
