diff options
Diffstat (limited to 'source')
| -rw-r--r-- | source/blender/blenkernel/intern/geometry_component_mesh.cc | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/geometry_component_mesh.cc b/source/blender/blenkernel/intern/geometry_component_mesh.cc index 31809b1ffec..53defc89b7e 100644 --- a/source/blender/blenkernel/intern/geometry_component_mesh.cc +++ b/source/blender/blenkernel/intern/geometry_component_mesh.cc @@ -256,6 +256,157 @@ static ReadAttributePtr adapt_mesh_domain_point_to_corner(const Mesh &mesh, return new_attribute; } +/** + * \note Theoretically this interpolation does not need to compute all values at once. + * However, doing that makes the implementation simpler, and this can be optimized in the future if + * only some values are required. + */ +template<typename T> +static void adapt_mesh_domain_corner_to_polygon_impl(const Mesh &mesh, + Span<T> old_values, + MutableSpan<T> r_values) +{ + BLI_assert(r_values.size() == mesh.totpoly); + attribute_math::DefaultMixer<T> mixer(r_values); + + for (const int poly_index : IndexRange(mesh.totpoly)) { + const MPoly &poly = mesh.mpoly[poly_index]; + for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) { + const T value = old_values[loop_index]; + mixer.mix_in(poly_index, value); + } + } + + mixer.finalize(); +} + +static ReadAttributePtr adapt_mesh_domain_corner_to_polygon(const Mesh &mesh, + ReadAttributePtr attribute) +{ + ReadAttributePtr new_attribute; + const CustomDataType data_type = attribute->custom_data_type(); + attribute_math::convert_to_static_type(data_type, [&](auto dummy) { + using T = decltype(dummy); + if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) { + Array<T> values(mesh.totpoly); + adapt_mesh_domain_corner_to_polygon_impl<T>(mesh, attribute->get_span<T>(), values); + new_attribute = std::make_unique<OwnedArrayReadAttribute<T>>(ATTR_DOMAIN_POINT, + std::move(values)); + } + }); + return new_attribute; +} + +template<typename T> +void adapt_mesh_domain_polygon_to_point_impl(const Mesh &mesh, + Span<T> old_values, + MutableSpan<T> r_values) +{ + BLI_assert(r_values.size() == mesh.totvert); + attribute_math::DefaultMixer<T> mixer(r_values); + + for (const int poly_index : IndexRange(mesh.totpoly)) { + const MPoly &poly = mesh.mpoly[poly_index]; + const T value = old_values[poly_index]; + for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) { + const MLoop &loop = mesh.mloop[loop_index]; + const int point_index = loop.v; + mixer.mix_in(point_index, value); + } + } + + mixer.finalize(); +} + +static ReadAttributePtr adapt_mesh_domain_polygon_to_point(const Mesh &mesh, + ReadAttributePtr attribute) +{ + ReadAttributePtr new_attribute; + const CustomDataType data_type = attribute->custom_data_type(); + attribute_math::convert_to_static_type(data_type, [&](auto dummy) { + using T = decltype(dummy); + if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) { + Array<T> values(mesh.totvert); + adapt_mesh_domain_polygon_to_point_impl<T>(mesh, attribute->get_span<T>(), values); + new_attribute = std::make_unique<OwnedArrayReadAttribute<T>>(ATTR_DOMAIN_POINT, + std::move(values)); + } + }); + return new_attribute; +} + +template<typename T> +void adapt_mesh_domain_polygon_to_corner_impl(const Mesh &mesh, + const Span<T> old_values, + MutableSpan<T> r_values) +{ + BLI_assert(r_values.size() == mesh.totloop); + + for (const int poly_index : IndexRange(mesh.totpoly)) { + const MPoly &poly = mesh.mpoly[poly_index]; + MutableSpan<T> poly_corner_values = r_values.slice(poly.loopstart, poly.totloop); + poly_corner_values.fill(old_values[poly_index]); + } +} + +static ReadAttributePtr adapt_mesh_domain_polygon_to_corner(const Mesh &mesh, + ReadAttributePtr attribute) +{ + ReadAttributePtr new_attribute; + const CustomDataType data_type = attribute->custom_data_type(); + attribute_math::convert_to_static_type(data_type, [&](auto dummy) { + using T = decltype(dummy); + if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) { + Array<T> values(mesh.totloop); + adapt_mesh_domain_polygon_to_corner_impl<T>(mesh, attribute->get_span<T>(), values); + new_attribute = std::make_unique<OwnedArrayReadAttribute<T>>(ATTR_DOMAIN_POINT, + std::move(values)); + } + }); + return new_attribute; +} + +/** + * \note Theoretically this interpolation does not need to compute all values at once. + * However, doing that makes the implementation simpler, and this can be optimized in the future if + * only some values are required. + */ +template<typename T> +static void adapt_mesh_domain_point_to_polygon_impl(const Mesh &mesh, + const Span<T> old_values, + MutableSpan<T> r_values) +{ + BLI_assert(r_values.size() == mesh.totpoly); + attribute_math::DefaultMixer<T> mixer(r_values); + + for (const int poly_index : IndexRange(mesh.totpoly)) { + const MPoly &poly = mesh.mpoly[poly_index]; + for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) { + MLoop &loop = mesh.mloop[loop_index]; + const int point_index = loop.v; + mixer.mix_in(poly_index, old_values[point_index]); + } + } + mixer.finalize(); +} + +static ReadAttributePtr adapt_mesh_domain_point_to_polygon(const Mesh &mesh, + ReadAttributePtr attribute) +{ + ReadAttributePtr new_attribute; + const CustomDataType data_type = attribute->custom_data_type(); + attribute_math::convert_to_static_type(data_type, [&](auto dummy) { + using T = decltype(dummy); + if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) { + Array<T> values(mesh.totpoly); + adapt_mesh_domain_point_to_polygon_impl<T>(mesh, attribute->get_span<T>(), values); + new_attribute = std::make_unique<OwnedArrayReadAttribute<T>>(ATTR_DOMAIN_POINT, + std::move(values)); + } + }); + return new_attribute; +} + } // namespace blender::bke ReadAttributePtr MeshComponent::attribute_try_adapt_domain(ReadAttributePtr attribute, @@ -277,6 +428,8 @@ ReadAttributePtr MeshComponent::attribute_try_adapt_domain(ReadAttributePtr attr switch (new_domain) { case ATTR_DOMAIN_POINT: return blender::bke::adapt_mesh_domain_corner_to_point(*mesh_, std::move(attribute)); + case ATTR_DOMAIN_POLYGON: + return blender::bke::adapt_mesh_domain_corner_to_polygon(*mesh_, std::move(attribute)); default: break; } @@ -286,9 +439,23 @@ ReadAttributePtr MeshComponent::attribute_try_adapt_domain(ReadAttributePtr attr switch (new_domain) { case ATTR_DOMAIN_CORNER: return blender::bke::adapt_mesh_domain_point_to_corner(*mesh_, std::move(attribute)); + case ATTR_DOMAIN_POLYGON: + return blender::bke::adapt_mesh_domain_point_to_polygon(*mesh_, std::move(attribute)); + default: + break; + } + break; + } + case ATTR_DOMAIN_POLYGON: { + switch (new_domain) { + case ATTR_DOMAIN_POINT: + return blender::bke::adapt_mesh_domain_polygon_to_point(*mesh_, std::move(attribute)); + case ATTR_DOMAIN_CORNER: + return blender::bke::adapt_mesh_domain_polygon_to_corner(*mesh_, std::move(attribute)); default: break; } + break; } default: break; |