diff options
Diffstat (limited to 'source/blender/nodes/geometry/nodes/node_geo_input_index.cc')
-rw-r--r-- | source/blender/nodes/geometry/nodes/node_geo_input_index.cc | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_index.cc b/source/blender/nodes/geometry/nodes/node_geo_input_index.cc new file mode 100644 index 00000000000..e2287abe56c --- /dev/null +++ b/source/blender/nodes/geometry/nodes/node_geo_input_index.cc @@ -0,0 +1,60 @@ +/* + * 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" + +namespace blender::nodes { + +static void geo_node_input_index_declare(NodeDeclarationBuilder &b) +{ + b.add_output<decl::Int>("Index"); +} + +class IndexFieldInput final : public fn::FieldInput { + public: + IndexFieldInput() : FieldInput(CPPType::get<int>(), "Index") + { + } + + const GVArray *get_varray_for_context(const fn::FieldContext &UNUSED(context), + IndexMask mask, + ResourceScope &scope) const final + { + /* TODO: Investigate a similar method to IndexRange::as_span() */ + auto index_func = [](int i) { return i; }; + return &scope.construct< + fn::GVArray_For_EmbeddedVArray<int, VArray_For_Func<int, decltype(index_func)>>>( + __func__, mask.min_array_size(), mask.min_array_size(), index_func); + } +}; + +static void geo_node_input_index_exec(GeoNodeExecParams params) +{ + Field<int> index_field{std::make_shared<IndexFieldInput>()}; + params.set_output("Index", std::move(index_field)); +} + +} // namespace blender::nodes + +void register_node_type_geo_input_index() +{ + static bNodeType ntype; + + geo_node_type_base(&ntype, GEO_NODE_INPUT_INDEX, "Index", NODE_CLASS_INPUT, 0); + ntype.geometry_node_execute = blender::nodes::geo_node_input_index_exec; + ntype.declare = blender::nodes::geo_node_input_index_declare; + nodeRegisterType(&ntype); +} |