Geometry Nodes: Fields version of the raycast node

This patch includes an updated version of the raycast node that uses
fields instead of attributes for inputs instead of outputs. This makes
the node's UI much clearer. It should be faster too, since the
evaluation system for fields provides multi-threading.

The source position replaces the input geometry (since this node is
evaluated in the context of a geometry like the other field nodes).

Thanks to @guitargeek for an initial version of this patch.

Differential Revision: https://developer.blender.org/D12638

1 files changed, 34 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index 9571d889f6d..dfefc774b3d 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -10716,7 +10716,7 @@ static void def_geo_input_material(StructRNA *srna)
   RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_update");
 }
 
-static void def_geo_raycast(StructRNA *srna)
+static void def_geo_legacy_raycast(StructRNA *srna)
 {
   static EnumPropertyItem mapping_items[] = {
       {GEO_NODE_RAYCAST_INTERPOLATED,
@@ -10752,6 +10752,39 @@ static void def_geo_raycast(StructRNA *srna)
   RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_socket_update");
 }
 
+static void def_geo_raycast(StructRNA *srna)
+{
+  static EnumPropertyItem mapping_items[] = {
+      {GEO_NODE_RAYCAST_INTERPOLATED,
+       "INTERPOLATED",
+       0,
+       "Interpolated",
+       "Interpolate the attribute from the corners of the hit face"},
+      {GEO_NODE_RAYCAST_NEAREST,
+       "NEAREST",
+       0,
+       "Nearest",
+       "Use the attribute value of the closest mesh element"},
+      {0, NULL, 0, NULL, NULL},
+  };
+
+  PropertyRNA *prop;
+
+  RNA_def_struct_sdna_from(srna, "NodeGeometryRaycast", "storage");
+
+  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 from the target geometry to hit points");
+  RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_update");
+
+  prop = RNA_def_property(srna, "data_type", PROP_ENUM, PROP_NONE);
+  RNA_def_property_enum_items(prop, rna_enum_attribute_type_items);
+  RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_GeometryNodeAttributeFill_type_itemf");
+  RNA_def_property_enum_default(prop, CD_PROP_FLOAT);
+  RNA_def_property_ui_text(prop, "Data Type", "Type of data stored in attribute");
+  RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_GeometryNode_socket_update");
+}
+
 static void def_geo_curve_fill(StructRNA *srna)
 {
   static const EnumPropertyItem mode_items[] = {