[Gmsh] A question about GMSH

[戴炜锋]

I’m working with gmsh and I have a problem: If I have got an surface
number, how can I get its point-list. For example:

 

Out[] = Extrude {0, 0, 1} {Surface{Bottom};};

 

I will have Out[], the expression-list recorded its top surface, volume and
lateral surfaces, but I want to get the top vertices. How can I get these
points ?

 

Or generally, for any line, surface or volume, how can I get its make-up?

 

Thank u very much.

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