Added method clear to most of collections which supports new/remove.

This method not added to animation-specific structures yet/

1 files changed, 16 insertions, 2 deletions

diff --git a/source/blender/makesrna/intern/rna_meta.c b/source/blender/makesrna/intern/rna_meta.c
index 323fb6780fb..5f948a3a243 100644
--- a/source/blender/makesrna/intern/rna_meta.c
+++ b/source/blender/makesrna/intern/rna_meta.c
@@ -147,6 +147,17 @@ static void rna_MetaBall_elements_remove(MetaBall *mb, ReportList *reports, Meta
 	}
 }
 
+static void rna_MetaBall_elements_clear(MetaBall *mb)
+{
+	BLI_freelistN(&mb->elems);
+
+	/* cheating way for importers to avoid slow updates */
+	if(mb->id.us > 0) {
+		DAG_id_tag_update(&mb->id, 0);
+		WM_main_add_notifier(NC_GEOM|ND_DATA, &mb->id);
+	}
+}
+
 #else
 
 static void rna_def_metaelement(BlenderRNA *brna)
@@ -234,17 +245,20 @@ static void rna_def_metaball_elements(BlenderRNA *brna, PropertyRNA *cprop)
 	RNA_def_struct_ui_text(srna, "Meta Elements", "Collection of metaball elements");
 
 	func= RNA_def_function(srna, "new", "rna_MetaBall_elements_new");
-	RNA_def_function_ui_description(func, "Add a new spline to the curve");
+	RNA_def_function_ui_description(func, "Add a new element to the metaball");
 	RNA_def_enum(func, "type", metaelem_type_items, MB_BALL, "", "type for the new meta-element");
 	parm= RNA_def_pointer(func, "element", "MetaElement", "", "The newly created meta-element");
 	RNA_def_function_return(func, parm);
 
 	func= RNA_def_function(srna, "remove", "rna_MetaBall_elements_remove");
-	RNA_def_function_ui_description(func, "Remove a spline from a curve");
+	RNA_def_function_ui_description(func, "Remove an element from the metaball");
 	RNA_def_function_flag(func, FUNC_USE_REPORTS);
 	parm= RNA_def_pointer(func, "element", "MetaElement", "", "The element to remove");
 	RNA_def_property_flag(parm, PROP_REQUIRED|PROP_NEVER_NULL);
 
+	func= RNA_def_function(srna, "clear", "rna_MetaBall_elements_clear");
+	RNA_def_function_ui_description(func, "Remove all elements from the metaball");
+
 	prop= RNA_def_property(srna, "active", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "lastelem");
 	RNA_def_property_ui_text(prop, "Active Element", "Last selected element");