Hello Daniel, thank you for the answer. I have read in the documention only
This function is called by some GridIn::read_* functions. > fully forgetting the following Only the vertices with indices in considered_vertices are tested for > equality. This speeds up the algorithm, which is quadratic and thus quite > slow to begin with. However, if you wish to consider all vertices, simply > pass an empty vector. > i.e. I have assumed it is called by default for all vertices. Best Marek 2016-10-02 12:27 GMT+02:00 Daniel Arndt <d.ar...@math.uni-goettingen.de>: > Marek, > > [...] >> > I want to ask a question, which could be interesting for other users of >> dealii- >> do we have some bulletproof procedure, how to produce (not so simple) >> geometries, >> meshes in gmsh and then merge them "safely" in the dealii? Safely >> meaning- without >> the creation of the doubled vertices at the boundary between merged >> geoetries, meshes? >> Is there some procedure in dealii to cope with this problem? >> The function merge_triangulation requieres "matching" triangulation, >> could it be possible >> to define a function, which would somehow merge vertices at the boundary >> of two not-so-nice >> matching trianguations (possibly within some toleration, i.e. if two >> vertices are less then \eps >> away from each other, than merge them....) >> Does my idea make sense? >> > This is already done in GridTools::delete_duplicated_vertices [1]. The > problem you experienced results from the fact that a coarse mesh cannot > contain any hanging nodes in deal.II. Therefore, the faces at the interface > have to match, i.e. there is 1-1 correspondence. This is something you have > ensure when creating the meshes you want to merge > and I don't see an easy way to work around this automatically. > > Best, > Daniel > > [1] https://www.dealii.org/8.4.1/doxygen/deal.II/namespaceGridTools.html# > a79820d66b08b06e94541817ba78d6213 > > -- > The deal.II project is located at http://www.dealii.org/ > For mailing list/forum options, see https://groups.google.com/d/ > forum/dealii?hl=en > --- > You received this message because you are subscribed to the Google Groups > "deal.II User Group" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to dealii+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
