1 files changed, 84 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/node_geo_translate_instances.cc b/source/blender/nodes/geometry/nodes/node_geo_translate_instances.cc
new file mode 100644
index 00000000000..91c503ff047
--- /dev/null
+++ b/source/blender/nodes/geometry/nodes/node_geo_translate_instances.cc
@@ -0,0 +1,84 @@
+/*
+ * 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 "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 &params, InstancesComponent &instances_component)
+{
+  GeometryComponentFieldContext field_context{instances_component, ATTR_DOMAIN_INSTANCE};
+
+  fn::FieldEvaluator evaluator{field_context, instances_component.instances_amount()};
+  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);
+}