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source/blender/nodes/geometry/nodes/node_geo_edge_split.cc
- This file was added.
| /* | |||||
| * This program is free software; you can redistribute it and/or | |||||
| * modify it under the terms of the GNU General Public License | |||||
| * as published by the Free Software Foundation; either version 2 | |||||
| * of the License, or (at your option) any later version. | |||||
| * | |||||
| * This program is distributed in the hope that it will be useful, | |||||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |||||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |||||
| * GNU General Public License for more details. | |||||
| * | |||||
| * You should have received a copy of the GNU General Public License | |||||
| * along with this program; if not, write to the Free Software Foundation, | |||||
| * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |||||
| */ | |||||
| #include "BKE_mesh.h" | |||||
| #include "BKE_mesh_runtime.h" | |||||
| #include "bmesh.h" | |||||
| #include "bmesh_tools.h" | |||||
| #include "node_geometry_util.hh" | |||||
| namespace blender::nodes { | |||||
| static void geo_node_edge_split_declare(NodeDeclarationBuilder &b) | |||||
| { | |||||
| b.add_input<decl::Geometry>("Mesh"); | |||||
| b.add_input<decl::Bool>("Selection").default_value(true).hide_value().supports_field(); | |||||
| b.add_output<decl::Geometry>("Mesh"); | |||||
| } | |||||
| static Mesh *mesh_edge_split(const Mesh &mesh, const IndexMask selection) | |||||
| { | |||||
| const BMeshCreateParams bmcp = {true}; | |||||
| const BMAllocTemplate allocsize = {0, 0, 0, 0}; | |||||
| BMesh *bm = BM_mesh_create(&allocsize, &bmcp); | |||||
| BMeshFromMeshParams params{}; | |||||
| BM_mesh_bm_from_me(bm, &mesh, ¶ms); | |||||
| BM_mesh_elem_table_ensure(bm, BM_EDGE); | |||||
| for (const int i : selection) { | |||||
| BMEdge *edge = BM_edge_at_index(bm, i); | |||||
| BM_elem_flag_enable(edge, BM_ELEM_TAG); | |||||
| } | |||||
| BM_mesh_edgesplit(bm, false, true, false); | |||||
| Mesh *result = BKE_mesh_from_bmesh_for_eval_nomain(bm, NULL, &mesh); | |||||
| BM_mesh_free(bm); | |||||
| BKE_mesh_normals_tag_dirty(result); | |||||
| return result; | |||||
| } | |||||
| static void geo_node_edge_split_exec(GeoNodeExecParams params) | |||||
| { | |||||
| GeometrySet geometry_set = params.extract_input<GeometrySet>("Mesh"); | |||||
| const Field<bool> selection_field = params.extract_input<Field<bool>>("Selection"); | |||||
| geometry_set.modify_geometry_sets([&](GeometrySet &geometry_set) { | |||||
| if (!geometry_set.has_mesh()) { | |||||
| return; | |||||
| } | |||||
| const MeshComponent &mesh_component = *geometry_set.get_component_for_read<MeshComponent>(); | |||||
| GeometryComponentFieldContext field_context{mesh_component, ATTR_DOMAIN_EDGE}; | |||||
| const int domain_size = mesh_component.attribute_domain_size(ATTR_DOMAIN_EDGE); | |||||
| fn::FieldEvaluator selection_evaluator{field_context, domain_size}; | |||||
| selection_evaluator.add(selection_field); | |||||
| selection_evaluator.evaluate(); | |||||
| const IndexMask selection = selection_evaluator.get_evaluated_as_mask(0); | |||||
| geometry_set.replace_mesh(mesh_edge_split(*mesh_component.get_for_read(), selection)); | |||||
| }); | |||||
| params.set_output("Mesh", std::move(geometry_set)); | |||||
| } | |||||
| } // namespace blender::nodes | |||||
| void register_node_type_geo_edge_split() | |||||
| { | |||||
| static bNodeType ntype; | |||||
| geo_node_type_base(&ntype, GEO_NODE_EDGE_SPLIT, "Edge Split", NODE_CLASS_GEOMETRY, 0); | |||||
| ntype.geometry_node_execute = blender::nodes::geo_node_edge_split_exec; | |||||
| ntype.declare = blender::nodes::geo_node_edge_split_declare; | |||||
| nodeRegisterType(&ntype); | |||||
| } | |||||