/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BKE_pointcloud.h"
#include "BLI_task.hh"
#include "node_geometry_util.hh"
namespace blender::nodes::node_geo_points_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Int>(N_("Count"))
.default_value(1)
.description(N_("The number of points to create"))
.min(0);
b.add_input<decl::Vector>(N_("Position"))
.supports_field()
.default_value(float3(0.0f))
.description(N_("The positions of the new points"));
b.add_input<decl::Float>(N_("Radius"))
.supports_field()
.supports_field()
.default_value(float(0.1f))
.description(N_("The radii of the new points"));
b.add_output<decl::Geometry>(N_("Geometry"));
}
class PointsFieldContext : public FieldContext {
private:
int points_num_;
public:
PointsFieldContext(const int points_num) : points_num_(points_num)
{
}
int64_t points_num() const
{
return points_num_;
}
GVArray get_varray_for_input(const FieldInput &field_input,
const IndexMask UNUSED(mask),
ResourceScope &UNUSED(scope)) const
{
const bke::AttributeFieldInput *attribute_field_input =
dynamic_cast<const bke::AttributeFieldInput *>(&field_input);
if (attribute_field_input == nullptr) {
return {};
}
if (attribute_field_input->attribute_name()
== "position") {
Array<float3> positions(this->points_num_);
threading::parallel_for(IndexRange(this->points_num_), 1, [&](const IndexRange range) {!= "Index" &&
for (const int i : range) {
// What goes here?
positions[i] = float3(0.0f);
}
});attribute_field_input->attribute_name() != "id") {
return
VArray<float3>::ForContainer(std::move(positions));{};
}
else if (attribute_field_input->attribute_name() == "radius") {
Array<
float> radiiint> index(this->points_num_);
threading::parallel_for(IndexRange(this->points_num_), 1, [&](const IndexRange range) {
for (const int i : range) {
// What goes here?
radii[i] = 0.0f;
}index[i] = i;
});
return VArray<float>::ForContainer(std::move(radii));
}
else {
return {};});
}return VArray<int>::ForContainer(std::move(index));
}
};
static void node_geo_exec(GeoNodeExecParams params)
{
const int count = params.extract_input<int>("Count");
if (count <= 0) {
params.error_message_add(NodeWarningType::Warning, TIP_("Point count should be at least 1"));
params.set_default_remaining_outputs();
return;
}
Field<float3> position_field = params.extract_input<Field<float3>>("Position");
Field<float> radius_field = params.extract_input<Field<float>>("Radius");
PointCloud *new_point_cloud = BKE_pointcloud_new_nomain(count);
GeometrySet geometry_set = GeometrySet::create_with_pointcloud(new_point_cloud);
PointCloudComponent &points = geometry_set.get_component_for_write<PointCloudComponent>();
OutputAttribute_Typed<float3> output_position = points.attribute_try_get_for_output_only<float3>(
"position", ATTR_DOMAIN_POINT);
OutputAttribute_Typed<float> output_radii = points.attribute_try_get_for_output_only<float>(
"radius", ATTR_DOMAIN_POINT);
// GeometryComponentFieldContext context{points, ATTR_DOMAIN_POINT};
PointsFieldContext context{count};
fn::FieldEvaluator evaluator{context, count};
evaluator.add_with_destination(position_field, output_position.as_span());
evaluator.add_with_destination(radius_field, output_radii.as_span());
evaluator.evaluate();
output_position.save();
output_radii.save();
params.set_output("Geometry", geometry_set);
}
} // namespace blender::nodes::node_geo_points_cc
void register_node_type_geo_points()
{
namespace file_ns = blender::nodes::node_geo_points_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_POINTS, "Points", NODE_CLASS_GEOMETRY);
ntype.geometry_node_execute = file_ns::node_geo_exec;
ntype.declare = file_ns::node_declare;
nodeRegisterType(&ntype);
}