September 2018 - OpenMesh - lists.rwth-aachen.de

help (Building a subgraph out of a specific trait)
by S Vijai Kumar 26 Sep '18

26 Sep '18

Hello everybody, I hope this is not a stupid question. I traverse across my OpenMesh trimesh object and mark certain edges / faces based on some filtering criterion. Now if i want to build a new Trimesh / Polymesh object out of these faces (for example), what is the best way to do this ? Any help / hints would be appreciated. Thanks in advance. Kind regards, S Vijai Kumar Sent with [ProtonMail](https://protonmail.com) Secure Email.

1 0

Compilation error in Xcode 9.4 (OpenMesh 7.1 or 7.2), but not in terminal (APPLE)
by Hervé Turlier 25 Sep '18

25 Sep '18

Dear developers, I contact you because I get the compilation error below when I try to build the Core Library with Xcode (9.4), after I created an Xcode project with "cmake -G Xcode .." Curiously, the compilation works when I build the packages with cmake in the terminal without creating a Xcode project: "cmake .." PhaseScriptExecution CMake\ PostBuild\ Rules build/src/OpenMesh/Core/OpenMesh.build/Debug/OpenMeshCore.build/Script-DD82B41B19DA4A22A63FE961.sh cd /Users/Turlier/Dropbox/git/OpenMesh-7.1 /bin/sh -c /Users/Turlier/Dropbox/git/OpenMesh-7.1/build/src/OpenMesh/Core/OpenMesh.build/Debug/OpenMeshCore.build/Script-DD82B41B19DA4A22A63FE961.sh /usr/local/Cellar/cmake/3.12.1/bin/cmake -E copy_if_different /Users/Turlier/Dropbox/git/OpenMesh-7.1/build/src/OpenMesh/Core/Debug/libOpenMeshCored.7.1.dylib /Users/Turlier/Dropbox/git/OpenMesh-7.1/build/Build/lib/libOpenMeshCored.7.1.dylib /usr/local/Cellar/cmake/3.12.1/bin/cmake -E copy_if_different /Users/Turlier/Dropbox/git/OpenMesh-7.1/build/src/OpenMesh/Core/Debug/libOpenMeshCored.dylib /Users/Turlier/Dropbox/git/OpenMesh-7.1/build/Build/lib/libOpenMeshCored.dylib Error copying file (if different) from "/Users/Turlier/Dropbox/git/OpenMesh-7.1/build/src/OpenMesh/Core/Debug/libOpenMeshCored.dylib" to "/Users/Turlier/Dropbox/git/OpenMesh-7.1/build/Build/lib/libOpenMeshCored.dylib". make: *** [OpenMeshCore_buildpart_1] Error 1 Command /bin/sh failed with exit code 2 I’m not sure what I would need to modify in the CMakeLists.txt to avoid this compilation error on Xcode. Many thanks in advance for your help. Best, --- Hervé Turlier, PhD Team Multiscale Physics of Morphogenesis, Center for Interdisciplinary Research in Biology Collège de France / CNRS UMR7241 / INSERM U1050 11, place Marcelin Berthelot 75231 Paris Cedex 05, FRANCE Tel: +33 (0)144271410 www.virtual-embryo.com

2 1

Questions on add_face crashes
by Yun H. Jang 12 Sep '18

12 Sep '18

Dear OpenMesh creators, First of all, thank you so much for creating this nice library. I've just started using your library, but it seems to have lots of functionalities to handle meshes. I have some troubles when I add faces. add_face() function generally works fine, but when the face vertices violate the add_face internal rules, it just skips adding faces or sometimes it crashes. Is it possible to have error code and have a chance to record this information for future correction? I think I may need to modify add_face() and recompile for my purpose, but I wanted to ask if there is built-in method to address this issue. A popular 3D print model (3DBenchy.stl) gives crash when I add faces into OpenMesh data structure. Thanks in advance. Best, Yun

1 0