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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"
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)>>>(
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);
}
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