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[Anders Logg <logg@xxxxxxxxx>]

It returns the cell-vertex connectivity for the whole mesh as one big 
contiguous array. So for a triangular mesh, you will have

uint* cells = mesh.cells();

// cells[0] is vertex 0 for cell 0
// cells[1] is vertex 1 for cell 0
// cells[2] is vertex 2 for cell 0
// cells[3] is vertex 0 for cell 1
// cells[4] is vertex 1 for cell 1
// cells[5] is vertex 2 for cell 1
// etc

You should work mainly through the iterators. The vertices() and cells() 
calls are used mainly in a few places in the Python wrappers (and the 
plotting).

/Anders


Alessio Quaglino wrote:
> Ok, I solved the problems thanks to Mesh iterators. Still don't know what
> cells() does though.
>
> Alessio
>
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