RNA:

* Added support for using pointers + collections as operator properties,
  but with the restriction that they must point to other type derived from
  ID property groups. The "add" function for these properties will allocate
  a new ID property group and point to that.
* Added support for arrays with type IDP_GROUP in ID properties.
* Fix bug getting/setting float array values.

Example code for collections, note the "OperatorMousePath" type is defined
in rna_wm.c and has a float[2] property named "loc".


Defining the operator property:

prop= RNA_def_property(ot->srna, "path", PROP_COLLECTION, PROP_NONE);
RNA_def_property_struct_runtime(prop, &RNA_OperatorMousePath);


Adding values:

PointerRNA itemptr;
float loc[2] = {1, 1},

RNA_collection_add(op->ptr, "path", &itemptr);
RNA_float_set_array(&itemptr, "loc", loc);


Iterating:

RNA_BEGIN(op->ptr, itemptr, "path") {
	float loc[2];

	RNA_float_get_array(&itemptr, "loc", loc);
	printf("Location: %f %f\n", loc[0], loc[1]);
}
RNA_END;

1 files changed, 27 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_define.c b/source/blender/makesrna/intern/rna_define.c
index 14e4763d2c0..05dba91757b 100644
--- a/source/blender/makesrna/intern/rna_define.c
+++ b/source/blender/makesrna/intern/rna_define.c
@@ -804,6 +804,33 @@ void RNA_def_property_struct_type(PropertyRNA *prop, const char *type)
 	}
 }
 
+void RNA_def_property_struct_runtime(PropertyRNA *prop, StructRNA *type)
+{
+	StructRNA *srna= DefRNA.laststruct;
+
+	if(DefRNA.preprocess) {
+		fprintf(stderr, "RNA_def_property_struct_runtime: only at runtime.\n");
+		return;
+	}
+
+	switch(prop->type) {
+		case PROP_POINTER: {
+			PointerPropertyRNA *pprop= (PointerPropertyRNA*)prop;
+			pprop->structtype = type;
+			break;
+		}
+		case PROP_COLLECTION: {
+			CollectionPropertyRNA *cprop= (CollectionPropertyRNA*)prop;
+			cprop->structtype = type;
+			break;
+		}
+		default:
+			fprintf(stderr, "RNA_def_property_struct_runtime: %s.%s, invalid type for struct type.\n", srna->identifier, prop->identifier);
+			DefRNA.error= 1;
+			break;
+	}
+}
+
 void RNA_def_property_enum_items(PropertyRNA *prop, const EnumPropertyItem *item)
 {
 	StructRNA *srna= DefRNA.laststruct;