unsigned int ED_viewedit_datamask(struct bScreen *screen);
/* camera lock functions */
+int ED_view3d_camera_lock_check(struct View3D *v3d, struct RegionView3D *rv3d);
/* copy the camera to the view before starting a view transformation */
void ED_view3d_camera_lock_init(struct View3D *v3d, struct RegionView3D *rv3d);
/* copy the view to the camera */