1 files changed, 173 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_separate_xyz.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_separate_xyz.cc
new file mode 100644
index 00000000000..c5aac118baf
--- /dev/null
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_separate_xyz.cc
@@ -0,0 +1,173 @@
+/*
+ * 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 "UI_interface.h"
+#include "UI_resources.h"
+
+#include "node_geometry_util.hh"
+
+namespace blender::nodes::node_geo_legacy_attribute_separate_xyz_cc {
+
+static void node_declare(NodeDeclarationBuilder &b)
+{
+  b.add_input<decl::Geometry>(N_("Geometry"));
+  b.add_input<decl::String>(N_("Vector"));
+  b.add_input<decl::Vector>(N_("Vector"), "Vector_001");
+  b.add_input<decl::String>(N_("Result X"));
+  b.add_input<decl::String>(N_("Result Y"));
+  b.add_input<decl::String>(N_("Result Z"));
+  b.add_output<decl::Geometry>(N_("Geometry"));
+}
+
+static void node_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
+{
+  uiLayoutSetPropSep(layout, true);
+  uiLayoutSetPropDecorate(layout, false);
+  uiItemR(layout, ptr, "input_type", 0, IFACE_("Type"), ICON_NONE);
+}
+
+static void node_init(bNodeTree *UNUSED(tree), bNode *node)
+{
+  NodeAttributeSeparateXYZ *data = (NodeAttributeSeparateXYZ *)MEM_callocN(
+      sizeof(NodeAttributeSeparateXYZ), __func__);
+  data->input_type = GEO_NODE_ATTRIBUTE_INPUT_ATTRIBUTE;
+  node->storage = data;
+}
+
+static void node_update(bNodeTree *ntree, bNode *node)
+{
+  NodeAttributeSeparateXYZ *node_storage = (NodeAttributeSeparateXYZ *)node->storage;
+  update_attribute_input_socket_availabilities(
+      *ntree, *node, "Vector", (GeometryNodeAttributeInputMode)node_storage->input_type);
+}
+
+static void extract_input(const int index, const Span<float3> &input, MutableSpan<float> result)
+{
+  for (const int i : result.index_range()) {
+    /* Get the component of the float3. (0: X, 1: Y, 2: Z). */
+    const float component = input[i][index];
+    result[i] = component;
+  }
+}
+
+static AttributeDomain get_result_domain(const GeometryComponent &component,
+                                         const GeoNodeExecParams &params,
+                                         const StringRef name_x,
+                                         const StringRef name_y,
+                                         const StringRef name_z)
+{
+  /* Use the highest priority domain from any existing attribute outputs. */
+  Vector<AttributeDomain, 3> output_domains;
+  std::optional<AttributeMetaData> info_x = component.attribute_get_meta_data(name_x);
+  std::optional<AttributeMetaData> info_y = component.attribute_get_meta_data(name_y);
+  std::optional<AttributeMetaData> info_z = component.attribute_get_meta_data(name_z);
+  if (info_x) {
+    output_domains.append(info_x->domain);
+  }
+  if (info_y) {
+    output_domains.append(info_y->domain);
+  }
+  if (info_z) {
+    output_domains.append(info_z->domain);
+  }
+  if (output_domains.size() > 0) {
+    return bke::attribute_domain_highest_priority(output_domains);
+  }
+
+  /* Otherwise use the domain of the input attribute, or the default. */
+  return params.get_highest_priority_input_domain({"Vector"}, component, ATTR_DOMAIN_POINT);
+}
+
+static void separate_attribute(GeometryComponent &component, const GeoNodeExecParams &params)
+{
+  const std::string result_name_x = params.get_input<std::string>("Result X");
+  const std::string result_name_y = params.get_input<std::string>("Result Y");
+  const std::string result_name_z = params.get_input<std::string>("Result Z");
+  if (result_name_x.empty() && result_name_y.empty() && result_name_z.empty()) {
+    return;
+  }
+
+  /* The node is only for float3 to float conversions. */
+  const AttributeDomain result_domain = get_result_domain(
+      component, params, result_name_x, result_name_y, result_name_z);
+
+  VArray<float3> attribute_input = params.get_input_attribute<float3>(
+      "Vector", component, result_domain, {0, 0, 0});
+  VArray_Span<float3> input_span{attribute_input};
+
+  OutputAttribute_Typed<float> attribute_result_x =
+      component.attribute_try_get_for_output_only<float>(result_name_x, result_domain);
+  OutputAttribute_Typed<float> attribute_result_y =
+      component.attribute_try_get_for_output_only<float>(result_name_y, result_domain);
+  OutputAttribute_Typed<float> attribute_result_z =
+      component.attribute_try_get_for_output_only<float>(result_name_z, result_domain);
+
+  /* Only extract the components for the outputs with a given attribute. */
+  if (attribute_result_x) {
+    extract_input(0, input_span, attribute_result_x.as_span());
+    attribute_result_x.save();
+  }
+  if (attribute_result_y) {
+    extract_input(1, input_span, attribute_result_y.as_span());
+    attribute_result_y.save();
+  }
+  if (attribute_result_z) {
+    extract_input(2, input_span, attribute_result_z.as_span());
+    attribute_result_z.save();
+  }
+}
+
+static void node_geo_exec(GeoNodeExecParams params)
+{
+  GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
+
+  geometry_set = geometry::realize_instances_legacy(geometry_set);
+
+  if (geometry_set.has<MeshComponent>()) {
+    separate_attribute(geometry_set.get_component_for_write<MeshComponent>(), params);
+  }
+  if (geometry_set.has<PointCloudComponent>()) {
+    separate_attribute(geometry_set.get_component_for_write<PointCloudComponent>(), params);
+  }
+  if (geometry_set.has<CurveComponent>()) {
+    separate_attribute(geometry_set.get_component_for_write<CurveComponent>(), params);
+  }
+
+  params.set_output("Geometry", geometry_set);
+}
+
+}  // namespace blender::nodes::node_geo_legacy_attribute_separate_xyz_cc
+
+void register_node_type_geo_attribute_separate_xyz()
+{
+  namespace file_ns = blender::nodes::node_geo_legacy_attribute_separate_xyz_cc;
+
+  static bNodeType ntype;
+
+  geo_node_type_base(&ntype,
+                     GEO_NODE_LEGACY_ATTRIBUTE_SEPARATE_XYZ,
+                     "Attribute Separate XYZ",
+                     NODE_CLASS_ATTRIBUTE,
+                     0);
+  ntype.declare = file_ns::node_declare;
+  node_type_init(&ntype, file_ns::node_init);
+  node_type_update(&ntype, file_ns::node_update);
+  node_type_storage(
+      &ntype, "NodeAttributeSeparateXYZ", node_free_standard_storage, node_copy_standard_storage);
+  ntype.geometry_node_execute = file_ns::node_geo_exec;
+  ntype.draw_buttons = file_ns::node_layout;
+  nodeRegisterType(&ntype);
+}