367145209c
The fact that blenlib doesn't know about the set of attribute types is actually an important detail right now that can influence how things are designed. Longer term it would be good to consolidate many of these attribute propagation algorithms anyway.
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "GEO_mesh_flip_faces.hh"
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#include "DNA_mesh_types.h"
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#include "BLI_task.hh"
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#include "BKE_attribute.hh"
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#include "BKE_attribute_math.hh"
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#include "BKE_mesh.hh"
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namespace blender::geometry {
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void flip_faces(Mesh &mesh, const IndexMask &selection)
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{
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if (mesh.totpoly == 0 || selection.is_empty()) {
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return;
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}
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const OffsetIndices polys = mesh.polys();
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MutableSpan<int> corner_verts = mesh.corner_verts_for_write();
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MutableSpan<int> corner_edges = mesh.corner_edges_for_write();
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threading::parallel_for(selection.index_range(), 1024, [&](const IndexRange range) {
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for (const int i : selection.slice(range)) {
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const IndexRange poly = polys[i];
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for (const int j : IndexRange(poly.size() / 2)) {
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const int a = poly[j + 1];
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const int b = poly.last(j);
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std::swap(corner_verts[a], corner_verts[b]);
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std::swap(corner_edges[a - 1], corner_edges[b]);
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}
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}
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});
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bke::MutableAttributeAccessor attributes = mesh.attributes_for_write();
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attributes.for_all(
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[&](const bke::AttributeIDRef &attribute_id, const bke::AttributeMetaData &meta_data) {
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if (meta_data.data_type == CD_PROP_STRING) {
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return true;
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}
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if (meta_data.domain != ATTR_DOMAIN_CORNER) {
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return true;
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}
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if (ELEM(attribute_id.name(), ".corner_vert", ".corner_edge")) {
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return true;
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}
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bke::GSpanAttributeWriter attribute = attributes.lookup_for_write_span(attribute_id);
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bke::attribute_math::convert_to_static_type(meta_data.data_type, [&](auto dummy) {
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using T = decltype(dummy);
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MutableSpan<T> dst_span = attribute.span.typed<T>();
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threading::parallel_for(selection.index_range(), 1024, [&](const IndexRange range) {
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for (const int i : selection.slice(range)) {
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dst_span.slice(polys[i].drop_front(1)).reverse();
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}
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});
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});
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attribute.finish();
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return true;
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});
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BKE_mesh_tag_face_winding_changed(&mesh);
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}
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} // namespace blender::geometry
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