Differential D16083 Diff 56395 source/blender/nodes/geometry/nodes/node_geo_mesh_topology_face_of_corner.cc

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source/blender/nodes/geometry/nodes/node_geo_mesh_topology_face_of_corner.cc

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				/* SPDX-License-Identifier: GPL-2.0-or-later */

				#include "BKE_mesh.h"
				#include "BKE_mesh_mapping.h"

				#include "node_geometry_util.hh"

				namespace blender::nodes::node_geo_mesh_topology_face_of_corner_cc {

				static void node_declare(NodeDeclarationBuilder &b)
				{
				b.add_input<decl::Int>(N_("Corner Index"))
				.implicit_field(implicit_field_inputs::index)
				.description(
				N_("The corner to retrieve data from. Defaults to the corner from the context"));
				b.add_output<decl::Int>(N_("Face Index"))
				.dependent_field()
				.description(N_("The index of the face the corner is a part of"));
				b.add_output<decl::Int>(N_("Index in Face"))
				.dependent_field()
				.description(N_("The index of the corner starting from the first corner in the face"));
				}

				class CornerFaceIndexInput final : public bke::MeshFieldInput {
				public:
				CornerFaceIndexInput() : bke::MeshFieldInput(CPPType::get<int>(), "Corner Face Index")
				{
				category_ = Category::Generated;
				}

				GVArray get_varray_for_context(const Mesh &mesh,
				const eAttrDomain domain,
				const IndexMask /mask/) const final
				{
				if (domain != ATTR_DOMAIN_CORNER) {
				return {};
				}
				return VArray<int>::ForContainer(
				mesh_topology::build_corner_to_poly_map(mesh.polys(), mesh.totloop));
				}

				uint64_t hash() const final
				{
				return 2348712958475728;
				}

				bool is_equal_to(const fn::FieldNode &other) const final
				{
				return dynamic_cast<const CornerFaceIndexInput *>(&other) != nullptr;
				}
				};

				class CornerIndexInFaceInput final : public bke::MeshFieldInput {
				public:
				CornerIndexInFaceInput() : bke::MeshFieldInput(CPPType::get<int>(), "Corner Index In Face")
				{
				category_ = Category::Generated;
				}

				GVArray get_varray_for_context(const Mesh &mesh,
				const eAttrDomain domain,
				const IndexMask /mask/) const final
				{
				if (domain != ATTR_DOMAIN_CORNER) {
				return {};
				}
				const Span<MPoly> polys = mesh.polys();
				Array<int> corner_to_poly_map = mesh_topology::build_corner_to_poly_map(polys, mesh.totloop);
				return VArray<int>::ForFunc(
				mesh.totloop,
				[polys, corner_to_poly_map = std::move(corner_to_poly_map)](const int corner_i) {
				const int poly_i = corner_to_poly_map[corner_i];
				return corner_i - polys[poly_i].loopstart;
				});
				}

				uint64_t hash() const final
				{
				return 97837176448;
				}

				bool is_equal_to(const fn::FieldNode &other) const final
				{
				if (dynamic_cast<const CornerIndexInFaceInput *>(&other)) {
				return true;
				}
				return false;
				}
				};

				static void node_geo_exec(GeoNodeExecParams params)
				{
				const Field<int> corner_index = params.extract_input<Field<int>>("Corner Index");
				if (params.output_is_required("Face Index")) {
				params.set_output("Face Index",
				Field<int>(std::make_shared<FieldAtIndexInput>(
				corner_index,
				Field<int>(std::make_shared<CornerFaceIndexInput>()),
				ATTR_DOMAIN_CORNER)));
				}
				if (params.output_is_required("Index in Face")) {
				params.set_output("Index in Face",
				Field<int>(std::make_shared<FieldAtIndexInput>(
				corner_index,
				Field<int>(std::make_shared<CornerIndexInFaceInput>()),
				ATTR_DOMAIN_CORNER)));
				}
				}

				} // namespace blender::nodes::node_geo_mesh_topology_face_of_corner_cc

				void register_node_type_geo_mesh_topology_face_of_corner()
				{
				namespace file_ns = blender::nodes::node_geo_mesh_topology_face_of_corner_cc;

				static bNodeType ntype;
				geo_node_type_base(
				&ntype, GEO_NODE_MESH_TOPOLOGY_FACE_OF_CORNER, "Face of Corner", NODE_CLASS_INPUT);
				ntype.geometry_node_execute = file_ns::node_geo_exec;
				ntype.declare = file_ns::node_declare;
				nodeRegisterType(&ntype);
				}