question: angle between line ab and cd concode_field_sep PlaceHolder placeHolder concode_field_sep double distanceFromSegment concode_elem_sep double distanceFromSegment
target: double function ( LatLon arg0 , LatLon arg1 , LatLon arg2 , LatLon arg3 ) { return ( Math . abs ( Math . atan2 ( arg0 . lat ( ) - arg1 . lat ( ) , arg0 . lon ( ) - arg1 . lon ( ) ) - Math . atan2 ( arg2 . lat ( ) - arg3 . lat ( ) , arg2 . lon ( ) - arg3 . lon ( ) ) ) / Math . PI * 180 ) % 360 ; }