Geometry Nodes: Domain Size Node

The Domain Size node has a single geometry input and a selection for
the component type. Based on the component chosen, outputs containing
single values for the related domains are shown.

Mesh:
  - Point Count
  - Edge Count
  - Face Count
  - Face Corner Count
Curve:
  - Point Count
  - Spline Count
Point Cloud:
  - Point Count
Instances:
  - Instance Count

Differential Revision: https://developer.blender.org/D13365

3 files changed, 37 insertions, 25 deletions

diff --git a/source/blender/makesrna/RNA_enum_items.h b/source/blender/makesrna/RNA_enum_items.h
index fb18802483d..78dd977af20 100644
--- a/source/blender/makesrna/RNA_enum_items.h
+++ b/source/blender/makesrna/RNA_enum_items.h
@@ -210,6 +210,7 @@ DEF_ENUM(rna_enum_attribute_type_with_auto_items)
 DEF_ENUM(rna_enum_attribute_domain_items)
 DEF_ENUM(rna_enum_attribute_domain_without_corner_items)
 DEF_ENUM(rna_enum_attribute_domain_with_auto_items)
+DEF_ENUM(rna_enum_geometry_component_type_items)
 
 DEF_ENUM(rna_enum_volume_grid_data_type_items)
 
diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index aef3823338b..2db517d6b58 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -39,6 +39,7 @@
 #include "BKE_animsys.h"
 #include "BKE_attribute.h"
 #include "BKE_cryptomatte.h"
+#include "BKE_geometry_set.h"
 #include "BKE_image.h"
 #include "BKE_node.h"
 #include "BKE_texture.h"
@@ -9166,6 +9167,16 @@ static void def_geo_boolean(StructRNA *srna)
   RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_socket_update");
 }
 
+static void def_geo_attribute_domain_size(StructRNA *srna)
+{
+  PropertyRNA *prop = RNA_def_property(srna, "component", PROP_ENUM, PROP_NONE);
+  RNA_def_property_enum_sdna(prop, NULL, "custom1");
+  RNA_def_property_enum_items(prop, rna_enum_geometry_component_type_items);
+  RNA_def_property_enum_default(prop, GEO_COMPONENT_TYPE_MESH);
+  RNA_def_property_ui_text(prop, "Component", "");
+  RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_socket_update");
+}
+
 static void def_geo_curve_primitive_bezier_segment(StructRNA *srna)
 {
   static const EnumPropertyItem mode_items[] = {
diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index 8f04524c5c1..bf7a912e9e6 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -73,6 +73,30 @@
 
 #include "RNA_enum_types.h"
 
+const EnumPropertyItem rna_enum_geometry_component_type_items[] = {
+    {GEO_COMPONENT_TYPE_MESH,
+     "MESH",
+     ICON_MESH_DATA,
+     "Mesh",
+     "Mesh component containing point, corner, edge and face data"},
+    {GEO_COMPONENT_TYPE_POINT_CLOUD,
+     "POINTCLOUD",
+     ICON_POINTCLOUD_DATA,
+     "Point Cloud",
+     "Point cloud component containing only point data"},
+    {GEO_COMPONENT_TYPE_CURVE,
+     "CURVE",
+     ICON_CURVE_DATA,
+     "Curve",
+     "Curve component containing spline and control point data"},
+    {GEO_COMPONENT_TYPE_INSTANCES,
+     "INSTANCES",
+     ICON_EMPTY_AXIS,
+     "Instances",
+     "Instances of objects or collections"},
+    {0, NULL, 0, NULL, NULL},
+};
+
 const EnumPropertyItem rna_enum_space_type_items[] = {
     /* empty must be here for python, is skipped for UI */
     {SPACE_EMPTY, "EMPTY", ICON_NONE, "Empty", ""},
@@ -7832,30 +7856,6 @@ static void rna_def_space_spreadsheet(BlenderRNA *brna)
   PropertyRNA *prop;
   StructRNA *srna;
 
-  static const EnumPropertyItem geometry_component_type_items[] = {
-      {GEO_COMPONENT_TYPE_MESH,
-       "MESH",
-       ICON_MESH_DATA,
-       "Mesh",
-       "Mesh component containing point, corner, edge and face data"},
-      {GEO_COMPONENT_TYPE_POINT_CLOUD,
-       "POINTCLOUD",
-       ICON_POINTCLOUD_DATA,
-       "Point Cloud",
-       "Point cloud component containing only point data"},
-      {GEO_COMPONENT_TYPE_CURVE,
-       "CURVE",
-       ICON_CURVE_DATA,
-       "Curve",
-       "Curve component containing spline and control point data"},
-      {GEO_COMPONENT_TYPE_INSTANCES,
-       "INSTANCES",
-       ICON_EMPTY_AXIS,
-       "Instances",
-       "Instances of objects or collections"},
-      {0, NULL, 0, NULL, NULL},
-  };
-
   static const EnumPropertyItem object_eval_state_items[] = {
       {SPREADSHEET_OBJECT_EVAL_STATE_EVALUATED,
        "EVALUATED",
@@ -7914,7 +7914,7 @@ static void rna_def_space_spreadsheet(BlenderRNA *brna)
   RNA_def_property_update(prop, NC_SPACE | ND_SPACE_SPREADSHEET, NULL);
 
   prop = RNA_def_property(srna, "geometry_component_type", PROP_ENUM, PROP_NONE);
-  RNA_def_property_enum_items(prop, geometry_component_type_items);
+  RNA_def_property_enum_items(prop, rna_enum_geometry_component_type_items);
   RNA_def_property_ui_text(
       prop, "Geometry Component", "Part of the geometry to display data from");
   RNA_def_property_update(prop,