2 files changed, 21 insertions, 3 deletions
diff --git a/source/blender/blenkernel/BKE_constraint.h b/source/blender/blenkernel/BKE_constraint.h
index 42089e37d63..9c5e89bff76 100644
--- a/source/blender/blenkernel/BKE_constraint.h
+++ b/source/blender/blenkernel/BKE_constraint.h
@@ -136,6 +136,7 @@ struct bConstraint *add_pose_constraint(struct Object *ob, struct bPoseChannel *
 
 int remove_constraint(ListBase *list, struct bConstraint *con);
 int remove_constraint_index(ListBase *list, int index);
+void remove_constraints_type(ListBase *list, short type, short last_only);
 
 /* Constraints + Proxies function prototypes */
 void extract_proxylocal_constraints(struct ListBase *dst, struct ListBase *src);
diff --git a/source/blender/blenkernel/intern/constraint.c b/source/blender/blenkernel/intern/constraint.c
index fe2e009918c..c22510a2527 100644
--- a/source/blender/blenkernel/intern/constraint.c
+++ b/source/blender/blenkernel/intern/constraint.c
@@ -3903,6 +3903,26 @@ int remove_constraint_index (ListBase *list, int index)
 		return 0;
 }
 
+/* Remove all the constraints of the specified type from the given constraint stack */
+void remove_constraints_type (ListBase *list, short type, short last_only)
+{
+	bConstraint *con, *conp;
+	
+	if (list == NULL)
+		return;
+	
+	/* remove from the end of the list to make it faster to find the last instance */
+	for (con= list->last; con; con= conp) {
+		conp= con->prev;
+		
+		if (con->type == type) {
+			remove_constraint(list, con);
+			if (last_only) 
+				return;
+		}
+	}
+}
+
 /* ......... */
 
 /* Creates a new constraint, initialises its data, and returns it */
@@ -4062,9 +4082,6 @@ void copy_constraints (ListBase *dst, const ListBase *src)
 		/* make a new copy of the constraint's data */
 		con->data = MEM_dupallocN(con->data);
 		
-		// NOTE: depreceated... old animation system
-		id_us_plus((ID *)con->ipo);
-		
 		/* only do specific constraints if required */
 		if (cti) {
 			/* perform custom copying operations if needed */