@Override public boolean is_IntBox(){
  for (int index=0; index < lines_size(); ++index) {
    PlaLineInt curr_line=tline_get(index);
    if (!curr_line.is_orthogonal())     return false;
    if (!corner_is_bounded(index))     return false;
  }
  return true;
}

@ Override public boolean is_IntBox ( ) { for ( int index = 0 ; index < lines_size ( ) ; ++ index ) { PlaLineInt curr_line = tline_get ( index ) ; if ( ! curr_line . is_orthogonal ( ) ) return false ; if ( ! corner_is_bounded ( index ) ) return false ; } return true ; }
checks if this simplex can be converted into an intbox
