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/*
* 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 "node_geometry_util.hh"
#include "UI_interface.h"
#include "UI_resources.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "BLI_task.hh"
#include "BKE_material.h"
namespace blender::nodes::node_geo_legacy_select_by_material_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Geometry"));
b.add_input<decl::Material>(N_("Material")).hide_label();
b.add_input<decl::String>(N_("Selection"));
b.add_output<decl::Geometry>(N_("Geometry"));
}
static void select_mesh_by_material(const Mesh &mesh,
const Material *material,
const MutableSpan<bool> r_selection)
{
BLI_assert(mesh.totpoly == r_selection.size());
Vector<int> material_indices;
for (const int i : IndexRange(mesh.totcol)) {
if (mesh.mat[i] == material) {
material_indices.append(i);
}
}
threading::parallel_for(r_selection.index_range(), 1024, [&](IndexRange range) {
for (const int i : range) {
r_selection[i] = material_indices.contains(mesh.mpoly[i].mat_nr);
}
});
}
static void node_geo_exec(GeoNodeExecParams params)
{
Material *material = params.extract_input<Material *>("Material");
const std::string selection_name = params.extract_input<std::string>("Selection");
GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
geometry_set = geometry_set_realize_instances(geometry_set);
if (geometry_set.has<MeshComponent>()) {
MeshComponent &mesh_component = geometry_set.get_component_for_write<MeshComponent>();
const Mesh *mesh = mesh_component.get_for_read();
if (mesh != nullptr) {
OutputAttribute_Typed<bool> selection =
mesh_component.attribute_try_get_for_output_only<bool>(selection_name, ATTR_DOMAIN_FACE);
if (selection) {
select_mesh_by_material(*mesh, material, selection.as_span());
selection.save();
}
}
}
params.set_output("Geometry", std::move(geometry_set));
}
} // namespace blender::nodes::node_geo_legacy_select_by_material_cc
void register_node_type_geo_legacy_select_by_material()
{
namespace file_ns = blender::nodes::node_geo_legacy_select_by_material_cc;
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_LEGACY_SELECT_BY_MATERIAL, "Select by Material", NODE_CLASS_GEOMETRY, 0);
ntype.declare = file_ns::node_declare;
ntype.geometry_node_execute = file_ns::node_geo_exec;
nodeRegisterType(&ntype);
}
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