From: bangerth Date: Sun, 28 Apr 2013 20:04:35 +0000 (+0000) Subject: Link to the tethex project to convert meshes. X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c5396ce7000582323a6f2e847ad4e14f522ab88;p=dealii-svn.git Link to the tethex project to convert meshes. git-svn-id: https://svn.dealii.org/trunk@29392 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/include/deal.II/grid/grid_in.h b/deal.II/include/deal.II/grid/grid_in.h index d18023c592..d64585ee94 100644 --- a/deal.II/include/deal.II/grid/grid_in.h +++ b/deal.II/include/deal.II/grid/grid_in.h @@ -32,13 +32,20 @@ struct SubCellData; * This class implements an input mechanism for grid data. It allows to read a * grid structure into a triangulation object. At present, UCD (unstructured * cell data), DB Mesh, XDA, Gmsh, Tecplot, NetCDF, UNV, and Cubit are supported as - * input format for grid data. Any numerical data after the block of geometric + * input format for grid data. Any numerical data other than geometric * (vertex locations) and topological (how vertices form cells) information is - * ignored. Notice also that at the moment in the codimension 1 case only UCD - * and Gmsh format are accepted. + * ignored. * - * Since the coarse mesh fed into a @p Triangulation object cannot have - * hanging nodes, strange things will happen if the input file has them. This + * @note Since deal.II only supports line, quadrilateral and hexahedral meshes, + * the functions in this class can only read meshes that consist exclusively + * of such cells. If you absolutely need to work with a mesh that uses triangles + * or tetrahedra, then your only option is to convert the mesh to quadrilaterals + * and hexahedra. A tool that can do this is tethex, see + * http://code.google.com/p/tethex/wiki/Tethex . + * + * Since the coarse mesh fed into a @p Triangulation object must not have + * hanging nodes, strange things will happen if the mesh represented by the + * input file does in fact have them. This * is due to the fact that most mesh description formats do not store * neighborship information between cells, so the grid reading functions have * to regenerate it. They do so by checking whether two cells have a common