2010/8/3 Christophe Geuzaine <[email protected]> > On 31/07/10 20:31, Alexey Vasyukov wrote: > >> Hi all. >> >> I'm trying to use gmsh to construct 3D mesh from initial 2D surface >> mesh. With some initial surface meshes it works and with others gmsh >> crashes or hangs. You can find example meshes and steps to reproduce >> problems in Trac - https://geuz.org/trac/gmsh/ticket/88 >> >> Could anybody point me in right direction how to fix it? >> >> > I've looked at your files a bit more closely. They all work OK with the > Delaunay. They cannot work with the Frontal algorithm because the surface > mesh should be oriented with outward pointing normals in that case. Gmsh > tries to orient the mesh correctly, but it does so "surface by surface". In > your example the boundary of the volume is a single surface ("1") with > non-coherent triangle orientations, so Gmsh cannot orient the triangles > correctly.
I fixed normals orientation in input mesh and tried version 2.4.2 (binary, Linux) and nightly builds of 2.5.0. I got strange result. If I launch GUI and start 3D meshing from GUI - everything works fine. But if I launch it from console (gmsh tetr-element-5.geo -3) - it fails with the same error as I reported to Track. Could you please point me what I am doing wrong? How can I make console mode produce the same result that GUI mode produces? Thanks in advance for your time and help. Best regards, Alexey Vasyukov
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