question: @ 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 ; }
target:  checks if this simplex can be converted into an IntBox