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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BLI_array.hh"
#include "BLI_task.hh"
#include "BLI_timeit.hh"
#include "DNA_pointcloud_types.h"
#include "BKE_pointcloud.h"
#include "GEO_resample_curves.hh"
#include "UI_interface.h"
#include "UI_resources.h"
#include "node_geometry_util.hh"
namespace blender::nodes::node_geo_curve_to_points_cc {
NODE_STORAGE_FUNCS(NodeGeometryCurveToPoints)
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Curve")).supported_type(GEO_COMPONENT_TYPE_CURVE);
b.add_input<decl::Int>(N_("Count"))
.default_value(10)
.min(2)
.max(100000)
.make_available(
[](bNode &node) { node_storage(node).mode = GEO_NODE_CURVE_RESAMPLE_COUNT; });
b.add_input<decl::Float>(N_("Length"))
.default_value(0.1f)
.min(0.001f)
.subtype(PROP_DISTANCE)
.make_available(
[](bNode &node) { node_storage(node).mode = GEO_NODE_CURVE_RESAMPLE_LENGTH; });
b.add_output<decl::Geometry>(N_("Points"));
b.add_output<decl::Vector>(N_("Tangent")).field_source();
b.add_output<decl::Vector>(N_("Normal")).field_source();
b.add_output<decl::Vector>(N_("Rotation")).field_source();
}
static void node_layout(uiLayout *layout, bContext * /*C*/, PointerRNA *ptr)
{
uiItemR(layout, ptr, "mode", 0, "", ICON_NONE);
}
static void node_init(bNodeTree * /*tree*/, bNode *node)
{
NodeGeometryCurveToPoints *data = MEM_cnew<NodeGeometryCurveToPoints>(__func__);
data->mode = GEO_NODE_CURVE_RESAMPLE_COUNT;
node->storage = data;
}
static void node_update(bNodeTree *ntree, bNode *node)
{
const NodeGeometryCurveToPoints &storage = node_storage(*node);
const GeometryNodeCurveResampleMode mode = (GeometryNodeCurveResampleMode)storage.mode;
bNodeSocket *count_socket = static_cast<bNodeSocket *>(node->inputs.first)->next;
bNodeSocket *length_socket = count_socket->next;
nodeSetSocketAvailability(ntree, count_socket, mode == GEO_NODE_CURVE_RESAMPLE_COUNT);
nodeSetSocketAvailability(ntree, length_socket, mode == GEO_NODE_CURVE_RESAMPLE_LENGTH);
}
static void fill_rotation_attribute(const Span<float3> tangents,
const Span<float3> normals,
MutableSpan<float3> rotations)
{
threading::parallel_for(IndexRange(rotations.size()), 512, [&](IndexRange range) {
for (const int i : range) {
rotations[i] =
float4x4::from_normalized_axis_data({0, 0, 0}, normals[i], tangents[i]).to_euler();
}
});
}
static PointCloud *pointcloud_from_curves(bke::CurvesGeometry curves,
const AttributeIDRef &tangent_id,
const AttributeIDRef &normal_id,
const AttributeIDRef &rotation_id)
{
PointCloud *pointcloud = BKE_pointcloud_new_nomain(0);
pointcloud->totpoint = curves.points_num();
if (rotation_id) {
MutableAttributeAccessor attributes = curves.attributes_for_write();
const VArraySpan<float3> tangents = attributes.lookup<float3>(tangent_id, ATTR_DOMAIN_POINT);
const VArraySpan<float3> normals = attributes.lookup<float3>(normal_id, ATTR_DOMAIN_POINT);
SpanAttributeWriter<float3> rotations = attributes.lookup_or_add_for_write_only_span<float3>(
rotation_id, ATTR_DOMAIN_POINT);
fill_rotation_attribute(tangents, normals, rotations.span);
rotations.finish();
}
/* Move the curve point custom data to the pointcloud, to avoid any copying. */
CustomData_free(&pointcloud->pdata, pointcloud->totpoint);
pointcloud->pdata = curves.point_data;
CustomData_reset(&curves.point_data);
return pointcloud;
}
static void node_geo_exec(GeoNodeExecParams params)
{
const NodeGeometryCurveToPoints &storage = node_storage(params.node());
const GeometryNodeCurveResampleMode mode = (GeometryNodeCurveResampleMode)storage.mode;
GeometrySet geometry_set = params.extract_input<GeometrySet>("Curve");
GeometryComponentEditData::remember_deformed_curve_positions_if_necessary(geometry_set);
StrongAnonymousAttributeID tangent_anonymous_id;
StrongAnonymousAttributeID normal_anonymous_id;
StrongAnonymousAttributeID rotation_anonymous_id;
const bool rotation_required = params.output_is_required("Rotation");
if (params.output_is_required("Tangent") || rotation_required) {
tangent_anonymous_id = StrongAnonymousAttributeID("Tangent");
}
if (params.output_is_required("Normal") || rotation_required) {
normal_anonymous_id = StrongAnonymousAttributeID("Normal");
}
if (rotation_required) {
rotation_anonymous_id = StrongAnonymousAttributeID("Rotation");
}
geometry::ResampleCurvesOutputAttributeIDs resample_attributes;
resample_attributes.tangent_id = tangent_anonymous_id.get();
resample_attributes.normal_id = normal_anonymous_id.get();
switch (mode) {
case GEO_NODE_CURVE_RESAMPLE_COUNT: {
Field<int> count = params.extract_input<Field<int>>("Count");
geometry_set.modify_geometry_sets([&](GeometrySet &geometry) {
if (const Curves *src_curves_id = geometry.get_curves_for_read()) {
const bke::CurvesGeometry &src_curves = bke::CurvesGeometry::wrap(
src_curves_id->geometry);
bke::CurvesGeometry dst_curves = geometry::resample_to_count(
src_curves, fn::make_constant_field<bool>(true), count, resample_attributes);
PointCloud *pointcloud = pointcloud_from_curves(std::move(dst_curves),
resample_attributes.tangent_id,
resample_attributes.normal_id,
rotation_anonymous_id.get());
geometry.remove_geometry_during_modify();
geometry.replace_pointcloud(pointcloud);
}
});
break;
}
case GEO_NODE_CURVE_RESAMPLE_LENGTH: {
Field<float> length = params.extract_input<Field<float>>("Length");
geometry_set.modify_geometry_sets([&](GeometrySet &geometry) {
if (const Curves *src_curves_id = geometry.get_curves_for_read()) {
const bke::CurvesGeometry &src_curves = bke::CurvesGeometry::wrap(
src_curves_id->geometry);
bke::CurvesGeometry dst_curves = geometry::resample_to_length(
src_curves, fn::make_constant_field<bool>(true), length, resample_attributes);
PointCloud *pointcloud = pointcloud_from_curves(std::move(dst_curves),
resample_attributes.tangent_id,
resample_attributes.normal_id,
rotation_anonymous_id.get());
geometry.remove_geometry_during_modify();
geometry.replace_pointcloud(pointcloud);
}
});
break;
}
case GEO_NODE_CURVE_RESAMPLE_EVALUATED:
geometry_set.modify_geometry_sets([&](GeometrySet &geometry) {
if (const Curves *src_curves_id = geometry.get_curves_for_read()) {
const bke::CurvesGeometry &src_curves = bke::CurvesGeometry::wrap(
src_curves_id->geometry);
bke::CurvesGeometry dst_curves = geometry::resample_to_evaluated(
src_curves, fn::make_constant_field<bool>(true), resample_attributes);
PointCloud *pointcloud = pointcloud_from_curves(std::move(dst_curves),
resample_attributes.tangent_id,
resample_attributes.normal_id,
rotation_anonymous_id.get());
geometry.remove_geometry_during_modify();
geometry.replace_pointcloud(pointcloud);
}
});
break;
}
params.set_output("Points", std::move(geometry_set));
if (tangent_anonymous_id) {
params.set_output("Tangent",
AnonymousAttributeFieldInput::Create<float3>(
std::move(tangent_anonymous_id), params.attribute_producer_name()));
}
if (normal_anonymous_id) {
params.set_output("Normal",
AnonymousAttributeFieldInput::Create<float3>(
std::move(normal_anonymous_id), params.attribute_producer_name()));
}
if (rotation_anonymous_id) {
params.set_output("Rotation",
AnonymousAttributeFieldInput::Create<float3>(
std::move(rotation_anonymous_id), params.attribute_producer_name()));
}
}
} // namespace blender::nodes::node_geo_curve_to_points_cc
void register_node_type_geo_curve_to_points()
{
namespace file_ns = blender::nodes::node_geo_curve_to_points_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_CURVE_TO_POINTS, "Curve to Points", NODE_CLASS_GEOMETRY);
ntype.declare = file_ns::node_declare;
ntype.geometry_node_execute = file_ns::node_geo_exec;
ntype.draw_buttons = file_ns::node_layout;
node_type_storage(
&ntype, "NodeGeometryCurveToPoints", node_free_standard_storage, node_copy_standard_storage);
node_type_init(&ntype, file_ns::node_init);
node_type_update(&ntype, file_ns::node_update);
nodeRegisterType(&ntype);
}
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