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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "GEO_mesh_to_curve.hh"
#include "node_geometry_util.hh"
namespace blender::nodes::node_geo_legacy_mesh_to_curve_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Mesh"));
b.add_input<decl::String>(N_("Selection"));
b.add_output<decl::Geometry>(N_("Curve"));
}
static void node_geo_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Mesh");
geometry_set = geometry::realize_instances_legacy(geometry_set);
if (!geometry_set.has_mesh()) {
params.set_default_remaining_outputs();
return;
}
const MeshComponent &component = *geometry_set.get_component_for_read<MeshComponent>();
const std::string selection_name = params.extract_input<std::string>("Selection");
if (!selection_name.empty() && !component.attribute_exists(selection_name)) {
params.error_message_add(NodeWarningType::Error,
TIP_("No attribute with name \"") + selection_name + "\"");
}
VArray<bool> selection = component.attribute_get_for_read<bool>(
selection_name, ATTR_DOMAIN_EDGE, true);
Vector<int64_t> selected_edge_indices;
for (const int64_t i : IndexRange(component.attribute_domain_size(ATTR_DOMAIN_EDGE))) {
if (selection[i]) {
selected_edge_indices.append(i);
}
}
if (selected_edge_indices.size() == 0) {
params.set_default_remaining_outputs();
return;
}
std::unique_ptr<CurveEval> curve = geometry::mesh_to_curve_convert(
component, IndexMask(selected_edge_indices));
params.set_output("Curve", GeometrySet::create_with_curve(curve.release()));
}
} // namespace blender::nodes::node_geo_legacy_mesh_to_curve_cc
void register_node_type_geo_legacy_mesh_to_curve()
{
namespace file_ns = blender::nodes::node_geo_legacy_mesh_to_curve_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_LEGACY_MESH_TO_CURVE, "Mesh to Curve", NODE_CLASS_GEOMETRY);
ntype.declare = file_ns::node_declare;
ntype.geometry_node_execute = file_ns::node_geo_exec;
nodeRegisterType(&ntype);
}
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