I don't think OpenMP gets along with iterator-based for loops. In these cases, I just use integer indices and convert to OpenMesh handles in the loop body.

for (int fhi = 0; fhi < mesh.n_faces(); ++fhi) { TriMesh::FaceHandle fh = mesh.face_handle(fhi); TriMesh::HalfedgeHandle heh = mesh.halfedge_handle(fh); area[fhi] = mesh.calc_sector_area(heh); }

On 2/15/19 2:21 AM, LuWang (Jack) wrote:

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

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