October 2021 - OpenMesh - lists.rwth-aachen.de

OpenMesh with OpenMP
by LuWang (Jack) 13 Dec '23

13 Dec '23

Hello Madam or Sir, I am the user of OpenMesh, and I want ask some questions about the parallel code with OpenMesh, exactly, the parallel code is based on OpenMP on the VS2013. The first question: When I use the OpenMP on the VS2013 to speed up the program which write with OpenMesh, for example, I add the code: #pragma omp parallel for num_threads(7) , just like the following: and the errors follow, and I do not know why. and the second question: Could the code with iterator of OpenMesh be paralleled by OpenMP just like " for (TriMesh::FaceIter f_it = mesh.faces_begin(); f_it != mesh.faces_end(); f_it++) " in the above picture? or How can I parallel the code with iterator of OpenMesh? Thank you for your time! And I am looking forward to your reply. Sincerely LuWang

3 2

texture file support
by Philipp Auersperg-Castell 07 Mar '22

07 Mar '22

Hi Folks, for our project we needed support for texture files and have built it into Openmesh and also exposed it in openmesh-python. What we did in detail: OpenMesh: - added param 'texture_file' to the Options class, it specifies the path to the texture file - added param 'material_file_extension' to the Options class, it specifies the material file suffix, default is ".mat" as it was before, we needed it becuase Blender expects ".mtl" - removed default and copy constructor and destructor as well as assignment operator, because these are not necessary here, see https://en.cppreference.com/w/cpp/language/rule_of_three openmesh-python: - exposed the above features - exposed .is_locked and .set_locked - documented it in trimesh.rst I attatched the git diffs for OpenMesh and openmesh-python. Please let me know if it could be merged and if necessary what we could do better ;) regards Philipp Auersperg-Castell

3 4

can't use read_mesh in python
by cherepashkin＠phystech.edu 29 Oct '21

29 Oct '21

I would like to use openmesh in python just to read a mesh from .obj from ShapeNet model. I did following: import openmesh as om from openmesh import * mesh = om.TriMesh() read_mesh(mesh, filename) And I have got error, "name 'read_mesh' is not defined". Was read_mesh replaced with something else?

2 1

Fwd: OpenMesh Issue report
by Bruce Jones 12 Oct '21

12 Oct '21

Hi all, I am facing an issue dealing with complex faces in openmesh via the python interface. I have a mesh I am loading via trimesh (hard requirement at this time), and using that to build an openmesh mesh. This mesh (and others i work with) is degenerate in the sense that it has complex faces, and trying to ignore that problem leads to the python process crashing (either hanging or segfault/bus error depending on the mesh). If i proactively try to delete the complex faces immediately after they are created, I get a seg fault. I have attached a minimum working example complete with degenerate STL, I would appreciate any assistance debugging this and/or working around it! Cheers, Bruce

3 3