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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BLI_task.hh"
#include "node_geometry_util.hh"
namespace blender::nodes::node_geo_translate_instances_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Instances")).only_instances();
b.add_input<decl::Bool>(N_("Selection")).default_value(true).hide_value().supports_field();
b.add_input<decl::Vector>(N_("Translation")).subtype(PROP_TRANSLATION).supports_field();
b.add_input<decl::Bool>(N_("Local Space")).default_value(true).supports_field();
b.add_output<decl::Geometry>(N_("Instances"));
}
static void translate_instances(GeoNodeExecParams ¶ms, InstancesComponent &instances_component)
{
GeometryComponentFieldContext field_context{instances_component, ATTR_DOMAIN_INSTANCE};
fn::FieldEvaluator evaluator{field_context, instances_component.instances_num()};
evaluator.set_selection(params.extract_input<Field<bool>>("Selection"));
evaluator.add(params.extract_input<Field<float3>>("Translation"));
evaluator.add(params.extract_input<Field<bool>>("Local Space"));
evaluator.evaluate();
const IndexMask selection = evaluator.get_evaluated_selection_as_mask();
const VArray<float3> &translations = evaluator.get_evaluated<float3>(0);
const VArray<bool> &local_spaces = evaluator.get_evaluated<bool>(1);
MutableSpan<float4x4> instance_transforms = instances_component.instance_transforms();
threading::parallel_for(selection.index_range(), 1024, [&](IndexRange range) {
for (const int i_selection : range) {
const int i = selection[i_selection];
if (local_spaces[i]) {
instance_transforms[i] *= float4x4::from_location(translations[i]);
}
else {
add_v3_v3(instance_transforms[i].values[3], translations[i]);
}
}
});
}
static void node_geo_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Instances");
if (geometry_set.has_instances()) {
InstancesComponent &instances = geometry_set.get_component_for_write<InstancesComponent>();
translate_instances(params, instances);
}
params.set_output("Instances", std::move(geometry_set));
}
} // namespace blender::nodes::node_geo_translate_instances_cc
void register_node_type_geo_translate_instances()
{
namespace file_ns = blender::nodes::node_geo_translate_instances_cc;
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_TRANSLATE_INSTANCES, "Translate Instances", NODE_CLASS_GEOMETRY);
ntype.geometry_node_execute = file_ns::node_geo_exec;
ntype.declare = file_ns::node_declare;
nodeRegisterType(&ntype);
}
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