diff options
Diffstat (limited to 'source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc')
| -rw-r--r-- | source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc b/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc index fd831aa5674..93aba14aa0b 100644 --- a/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc +++ b/source/blender/io/wavefront_obj/exporter/obj_export_mesh.cc @@ -195,6 +195,25 @@ void OBJMesh::calc_smooth_groups(const bool use_bitflags) use_bitflags); } +void OBJMesh::calc_poly_order() +{ + const int tot_polys = tot_polygons(); + poly_order_.resize(tot_polys); + for (int i = 0; i < tot_polys; ++i) { + poly_order_[i] = i; + } + const MPoly *mpolys = export_mesh_eval_->mpoly; + /* Sort polygons by their material index. */ + std::sort(poly_order_.begin(), poly_order_.end(), [&](int a, int b) { + int mat_a = mpolys[a].mat_nr; + int mat_b = mpolys[b].mat_nr; + if (mat_a != mat_b) { + return mat_a < mat_b; + } + return a < b; + }); +} + const Material *OBJMesh::get_object_material(const int16_t mat_nr) const { /** |