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3D model vertex normals are now calculated in parallel

This commit is contained in:
Andrew Zonenberg 2014-08-02 15:20:25 -04:00
parent 764369439e
commit 60330de551
1 changed files with 5 additions and 4 deletions
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9
3d-viewer/3d_mesh_model.cpp
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@ -354,13 +354,16 @@ void S3D_MESH::calcPerPointNormals ()
}
m_PerFaceVertexNormals.clear();
// Pre-allocate space for the entire vector of vertex normals so we can do parallel writes
m_PerFaceVertexNormals.resize(m_CoordIndex.size());
// for each face A in mesh
#pragma omp parallel for
for( unsigned int each_face_A_idx = 0; each_face_A_idx < m_CoordIndex.size(); each_face_A_idx++ )
{
// n = face A facet normal
std::vector< glm::vec3 > face_A_normals;
face_A_normals.clear();
std::vector< glm::vec3 >& face_A_normals = m_PerFaceVertexNormals[each_face_A_idx];
face_A_normals.resize(m_CoordIndex[each_face_A_idx].size());
// loop through all 3 vertices
@ -402,7 +405,5 @@ void S3D_MESH::calcPerPointNormals ()
}
}
m_PerFaceVertexNormals.push_back( face_A_normals );
}
}