[Insight-developers] itk::Mesh questions.

[Luis Ibanez]

Hi Mark,

I'm affraid there is not a notion of neigborhood vertices (points) in
the Mesh. Since this relationship implicitly commes from the fact of
two vertices being the nodes of a LineCell.

In practical cases in the past I have added (as you mention) VertexCells
to the nodes in order for these VertexCells to hold the connectivity
information. It is not much of an overhead and results in a consistent
topology.

You may want to take a look at the Morphogenesis example. Where
biological cells are simulated in every mesh node, and VertexCells
are used to hold the topology.


Luis


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Mark Foskey wrote:
> In a mesh, what is the idiom for finding the neighbors of a Vertex?  I 
> see GetCellBoundaryFeatureNeighbors(), which one might think would work 
> if Vertex cells had a single degenerate boundary feature, but they don't.
> 
> Also, if you have indicate the connectively manually using 
> SetBoundaryAssignment(), do you still need to call BuildCellLinks() for 
> the neighbors to be determined?  It's not obvious from the docs either way.
>