Update Joint gizmos automatically

(cherry picked from commit 3e77b6d49d47e837dbdf50664d2d71e451b7b615)

editor/plugins/spatial_editor_plugin.h

@@ -828,12 +828,11 @@ public:
 	static const int HIDDEN = 1;
 	static const int ON_TOP = 2;
 
-private:
+protected:
 	int current_state;
 	List<EditorSpatialGizmo *> current_gizmos;
 	HashMap<String, Vector<Ref<SpatialMaterial> > > materials;
 
-protected:
 	static void _bind_methods();
 	virtual bool has_gizmo(Spatial *p_spatial);
 	virtual Ref<EditorSpatialGizmo> create_gizmo(Spatial *p_spatial);

editor/spatial_editor_gizmos.cpp

@@ -4075,6 +4075,25 @@ JointSpatialGizmoPlugin::JointSpatialGizmoPlugin() {
 	create_material("joint_material", EDITOR_DEF("editors/3d_gizmos/gizmo_colors/joint", Color(0.5, 0.8, 1)));
 	create_material("joint_body_a_material", EDITOR_DEF("editors/3d_gizmos/gizmo_colors/joint_body_a", Color(0.6, 0.8, 1)));
 	create_material("joint_body_b_material", EDITOR_DEF("editors/3d_gizmos/gizmo_colors/joint_body_b", Color(0.6, 0.9, 1)));
+
+	update_timer = memnew(Timer);
+	update_timer->set_name("JointGizmoUpdateTimer");
+	update_timer->set_wait_time(1.0 / 120.0);
+	update_timer->connect("timeout", this, "incremental_update_gizmos");
+	update_timer->set_autostart(true);
+	EditorNode::get_singleton()->call_deferred("add_child", update_timer);
+}
+
+void JointSpatialGizmoPlugin::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("incremental_update_gizmos"), &JointSpatialGizmoPlugin::incremental_update_gizmos);
+}
+
+void JointSpatialGizmoPlugin::incremental_update_gizmos() {
+	if (!current_gizmos.empty()) {
+		update_idx++;
+		update_idx = update_idx % current_gizmos.size();
+		redraw(current_gizmos[update_idx]);
+	}
 }
 
 bool JointSpatialGizmoPlugin::has_gizmo(Spatial *p_spatial) {

editor/spatial_editor_gizmos.h

@@ -390,6 +390,14 @@ class JointSpatialGizmoPlugin : public EditorSpatialGizmoPlugin {
 
 	GDCLASS(JointSpatialGizmoPlugin, EditorSpatialGizmoPlugin);
 
+	Timer *update_timer;
+	uint64_t update_idx = 0;
+
+	void incremental_update_gizmos();
+
+protected:
+	static void _bind_methods();
+
 public:
 	bool has_gizmo(Spatial *p_spatial);
 	String get_name() const;