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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "DEG_depsgraph_query.h"
#include "BLI_task.hh"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "BKE_curves.hh"
#include "BKE_mesh.h"
#include "node_geometry_util.hh"
namespace blender::nodes::node_geo_set_position_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Geometry"));
b.add_input<decl::Bool>(N_("Selection")).default_value(true).hide_value().supports_field();
b.add_input<decl::Vector>(N_("Position")).implicit_field(implicit_field_inputs::position);
b.add_input<decl::Vector>(N_("Offset")).supports_field().subtype(PROP_TRANSLATION);
b.add_output<decl::Geometry>(N_("Geometry"));
}
static void set_computed_position_and_offset(GeometryComponent &component,
const VArray<float3> &in_positions,
const VArray<float3> &in_offsets,
const IndexMask selection)
{
MutableAttributeAccessor attributes = *component.attributes_for_write();
AttributeWriter<float3> positions = attributes.lookup_for_write<float3>("position");
const int grain_size = 10000;
switch (component.type()) {
case GEO_COMPONENT_TYPE_MESH: {
Mesh *mesh = static_cast<MeshComponent &>(component).get_for_write();
MutableSpan<MVert> verts = mesh->verts_for_write();
if (in_positions.is_same(positions.varray)) {
devirtualize_varray(in_offsets, [&](const auto in_offsets) {
threading::parallel_for(
selection.index_range(), grain_size, [&](const IndexRange range) {
for (const int i : selection.slice(range)) {
const float3 offset = in_offsets[i];
add_v3_v3(verts[i].co, offset);
}
});
});
}
else {
devirtualize_varray2(
in_positions, in_offsets, [&](const auto in_positions, const auto in_offsets) {
threading::parallel_for(
selection.index_range(), grain_size, [&](const IndexRange range) {
for (const int i : selection.slice(range)) {
const float3 new_position = in_positions[i] + in_offsets[i];
copy_v3_v3(verts[i].co, new_position);
}
});
});
}
break;
}
case GEO_COMPONENT_TYPE_CURVE: {
CurveComponent &curve_component = static_cast<CurveComponent &>(component);
Curves &curves_id = *curve_component.get_for_write();
bke::CurvesGeometry &curves = bke::CurvesGeometry::wrap(curves_id.geometry);
if (attributes.contains("handle_right") && attributes.contains("handle_left")) {
SpanAttributeWriter<float3> handle_right_attribute =
attributes.lookup_or_add_for_write_span<float3>("handle_right", ATTR_DOMAIN_POINT);
SpanAttributeWriter<float3> handle_left_attribute =
attributes.lookup_or_add_for_write_span<float3>("handle_left", ATTR_DOMAIN_POINT);
MutableVArraySpan<float3> out_positions_span = positions.varray;
devirtualize_varray2(
in_positions, in_offsets, [&](const auto in_positions, const auto in_offsets) {
threading::parallel_for(
selection.index_range(), grain_size, [&](const IndexRange range) {
for (const int i : selection.slice(range)) {
const float3 new_position = in_positions[i] + in_offsets[i];
const float3 delta = new_position - out_positions_span[i];
handle_right_attribute.span[i] += delta;
handle_left_attribute.span[i] += delta;
out_positions_span[i] = new_position;
}
});
});
out_positions_span.save();
handle_right_attribute.finish();
handle_left_attribute.finish();
/* Automatic Bezier handles must be recalculated based on the new positions. */
curves.calculate_bezier_auto_handles();
break;
}
else {
ATTR_FALLTHROUGH;
}
}
default: {
MutableVArraySpan<float3> out_positions_span = positions.varray;
if (in_positions.is_same(positions.varray)) {
devirtualize_varray(in_offsets, [&](const auto in_offsets) {
threading::parallel_for(
selection.index_range(), grain_size, [&](const IndexRange range) {
for (const int i : selection.slice(range)) {
out_positions_span[i] += in_offsets[i];
}
});
});
}
else {
devirtualize_varray2(
in_positions, in_offsets, [&](const auto in_positions, const auto in_offsets) {
threading::parallel_for(
selection.index_range(), grain_size, [&](const IndexRange range) {
for (const int i : selection.slice(range)) {
out_positions_span[i] = in_positions[i] + in_offsets[i];
}
});
});
}
out_positions_span.save();
break;
}
}
positions.finish();
}
static void set_position_in_component(GeometryComponent &component,
const Field<bool> &selection_field,
const Field<float3> &position_field,
const Field<float3> &offset_field)
{
eAttrDomain domain = component.type() == GEO_COMPONENT_TYPE_INSTANCES ? ATTR_DOMAIN_INSTANCE :
ATTR_DOMAIN_POINT;
bke::GeometryFieldContext field_context{component, domain};
const int domain_size = component.attribute_domain_size(domain);
if (domain_size == 0) {
return;
}
fn::FieldEvaluator evaluator{field_context, domain_size};
evaluator.set_selection(selection_field);
evaluator.add(position_field);
evaluator.add(offset_field);
evaluator.evaluate();
const IndexMask selection = evaluator.get_evaluated_selection_as_mask();
const VArray<float3> positions_input = evaluator.get_evaluated<float3>(0);
const VArray<float3> offsets_input = evaluator.get_evaluated<float3>(1);
set_computed_position_and_offset(component, positions_input, offsets_input, selection);
}
static void node_geo_exec(GeoNodeExecParams params)
{
GeometrySet geometry = params.extract_input<GeometrySet>("Geometry");
Field<bool> selection_field = params.extract_input<Field<bool>>("Selection");
Field<float3> offset_field = params.extract_input<Field<float3>>("Offset");
Field<float3> position_field = params.extract_input<Field<float3>>("Position");
for (const GeometryComponentType type : {GEO_COMPONENT_TYPE_MESH,
GEO_COMPONENT_TYPE_POINT_CLOUD,
GEO_COMPONENT_TYPE_CURVE,
GEO_COMPONENT_TYPE_INSTANCES}) {
if (geometry.has(type)) {
set_position_in_component(
geometry.get_component_for_write(type), selection_field, position_field, offset_field);
}
}
params.set_output("Geometry", std::move(geometry));
}
} // namespace blender::nodes::node_geo_set_position_cc
void register_node_type_geo_set_position()
{
namespace file_ns = blender::nodes::node_geo_set_position_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_SET_POSITION, "Set Position", NODE_CLASS_GEOMETRY);
ntype.geometry_node_execute = file_ns::node_geo_exec;
ntype.declare = file_ns::node_declare;
nodeRegisterType(&ntype);
}
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