the distance between two points . concode_field_sep PlaceHolder placeHolder concode_field_sep double[] reflect concode_elem_sep double[] coordinates concode_elem_sep double angle concode_elem_sep double radians concode_elem_sep double degrees
double function ( double arg0 , double arg1 , double arg2 , double arg3 ) { return Math . sqrt ( Math . pow ( arg2 - arg0 , 2 ) + Math . pow ( arg3 - arg1 , 2 ) ) ; }