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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 "BLI_task.hh"
#include "BKE_spline.hh"
#include "node_geometry_util.hh"
namespace blender::nodes {
static void geo_node_curve_reverse_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Curve"));
b.add_input<decl::String>(N_("Selection"));
b.add_output<decl::Geometry>(N_("Curve"));
}
static void geo_node_curve_reverse_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Curve");
geometry_set = bke::geometry_set_realize_instances(geometry_set);
if (!geometry_set.has_curve()) {
params.set_output("Curve", geometry_set);
return;
}
/* Retrieve data for write access so we can avoid new allocations for the reversed data. */
CurveComponent &curve_component = geometry_set.get_component_for_write<CurveComponent>();
CurveEval &curve = *curve_component.get_for_write();
MutableSpan<SplinePtr> splines = curve.splines();
const std::string selection_name = params.extract_input<std::string>("Selection");
VArray<bool> selection = curve_component.attribute_get_for_read(
selection_name, ATTR_DOMAIN_CURVE, true);
threading::parallel_for(splines.index_range(), 128, [&](IndexRange range) {
for (const int i : range) {
if (selection[i]) {
splines[i]->reverse();
}
}
});
params.set_output("Curve", geometry_set);
}
} // namespace blender::nodes
void register_node_type_geo_legacy_curve_reverse()
{
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_LEGACY_CURVE_REVERSE, "Curve Reverse", NODE_CLASS_GEOMETRY, 0);
ntype.declare = blender::nodes::geo_node_curve_reverse_declare;
ntype.geometry_node_execute = blender::nodes::geo_node_curve_reverse_exec;
nodeRegisterType(&ntype);
}
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