Well actually, the OCC built- in is not adequate for two reasons: (1) i need to use quadrangles (2) i need to have the size of the mesh arbitrary spacing, whereas i think OCC triangulation will return triangles for a face that are only as small as necessary ( IE, a square face has only two triangles ) SMESH appears to offer what i would like, but i have a need to understand how the api works in a general sense
_____ From: pythonocc-users-boun...@gna.org [mailto:pythonocc-users-boun...@gna.org] On Behalf Of Jelle Feringa Sent: Friday, March 19, 2010 4:07 AM To: pythonOCC users mailing list. Subject: Re: [Pythonocc-users] Meshing Question Hi Thomas, Dave, This discussion needs some precision: the SMESH* modules are there to create FEM meshes. I think what Dave is looking for is meshes the represent the BREP geometry, right? Here's a snippet how you can access the triangulation of a face. Note that triangulation are build in OCC on a per-face basis. -jelle T = BRep_Tool().Triangulation(face, face.Location()).GetObject() nodes, uv_nodes, triangles = T.Nodes(), T.UVNodes(), T.Triangles() print 'Number of Triangles:', triangles.Length() On Mar 19, 2010, at 8:47 AM, Thomas Paviot wrote: Hi Dave, The meshing features for SMESH are available from the following python modules: SMESH, SMDS, SMDSAbs, SMEHSDS, StdMeshers, DriverDAT, DriverUNV. The api documentation can be browsed at: http://api.pythonocc.org/toc-OCC.SMESH-module.html http://api.pythonocc.org/toc-OCC.StdMeshers-module.html etc... 2010/3/19 Dave Cowden <dave.cow...@gmail.com> Ok, nevermind this question, i found a starting point in the Level1\SMESH samples. However, I cannnot seem to find any documentation to help me understand these objects. I looked at the website, apidoc. Is the API published somewhere? On Thu, Mar 18, 2010 at 8:08 PM, Dave Cowden <dave.cow...@gmail.com> wrote: Hi, everyone: I have a qq about meshing. I have been struggling for several weeks now with a filling algorithm. I have an idea I might be able to use a mesh of a face to make my algo easier. I investigated the built-in BRepMesh functionality, but realized quickly that those triangulate surfaces with only the number of triangles necessary: IE, a square face would have exactly two triangles. What i need is a mesher that will let me triangulate (or, better, use quadrilateral polygons ) to mesh a face , but with arbitrarily selected mesh size. I looked briefly at salome docs and i'm completely swamped. Could someone point me to a starting point for meshing with salome? thanks kindly! _______________________________________________ Pythonocc-users mailing list Pythonocc-users@gna.org https://mail.gna.org/listinfo/pythonocc-users _______________________________________________ Pythonocc-users mailing list Pythonocc-users@gna.org https://mail.gna.org/listinfo/pythonocc-users
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