Geometry Nodes: initial Attribute Transfer node

This is a first version of an Attribute Transfer node. It only supports two
modes for mapping attributes from one geometry to another for now.
More options are planned for the future.

Ref T87421.

Differential Revision: https://developer.blender.org/D11037

1 files changed, 34 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index 1da711f260c..dae4d3d810b 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -9680,6 +9680,40 @@ static void def_geo_switch(StructRNA *srna)
   RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_socket_update");
 }
 
+static void def_geo_attribute_transfer(StructRNA *srna)
+{
+  static EnumPropertyItem mapping_items[] = {
+      {GEO_NODE_ATTRIBUTE_TRANSFER_NEAREST_FACE_INTERPOLATED,
+       "NEAREST_FACE_INTERPOLATED",
+       0,
+       "Nearest Face Interpolated",
+       "Transfer the attribute from the nearest face on a surface (loose points and edges are "
+       "ignored)"},
+      {GEO_NODE_ATTRIBUTE_TRANSFER_NEAREST,
+       "NEAREST",
+       0,
+       "Nearest",
+       "Transfer the element from the nearest element (using face and edge centers for the "
+       "distance computation)"},
+      {0, NULL, 0, NULL, NULL},
+  };
+
+  PropertyRNA *prop;
+
+  RNA_def_struct_sdna_from(srna, "NodeGeometryAttributeTransfer", "storage");
+
+  prop = RNA_def_property(srna, "domain", PROP_ENUM, PROP_NONE);
+  RNA_def_property_enum_items(prop, rna_enum_attribute_domain_with_auto_items);
+  RNA_def_property_enum_default(prop, ATTR_DOMAIN_AUTO);
+  RNA_def_property_ui_text(prop, "Domain", "The geometry domain to save the result attribute in");
+  RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_update");
+
+  prop = RNA_def_property(srna, "mapping", PROP_ENUM, PROP_NONE);
+  RNA_def_property_enum_items(prop, mapping_items);
+  RNA_def_property_ui_text(prop, "Mapping", "Mapping between geometries");
+  RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_update");
+}
+
 /* -------------------------------------------------------------------------- */
 
 static void rna_def_shader_node(BlenderRNA *brna)