%!PS

% begin included library code
% see https://codeberg.org/Firedrake/postscript-libraries/
/test.end {
    ( ) print
    test.count 0 gt {
        (Passed ) print
        test.pass (...) cvs print
        (/) print
        test.count (...) cvs print
        ( \() print
        test.pass 100 mul test.count idiv (...) cvs print
        (%\)) print
        (\r\n) print
    } if
} bind def

/test {
    /test.count test.count 1 add def
    {
        /test.pass test.pass 1 add def
    } {
        ( ) print
        test.count (....) cvs print
        (-fail) print
    } ifelse
} bind def

/test.start {
    print (:) print
    /test.pass 0 def
    /test.count 0 def
} bind def


% end included library code

/oddmatrix {
    0 dict begin
    /points exch def
    /cols exch def
    /rows exch def
    /rm 0 dict def
    /cm 0 dict def
    points {
        aload pop
        /p1 exch def
        /p0 exch def
        rm p0 known {
            rm p0 undef
        } {
            rm p0 true put
        } ifelse
        cm p1 known {
            cm p1 undef
        } {
            cm p1 true put
        } ifelse
    } forall
    rm length cols cm length sub mul
    cm length rows rm length sub mul
    add
    end
} bind def

(oddmatrix) test.start
2 3 [[0 1] [1 1]] oddmatrix 6 eq test
2 2 [[1 1] [0 0]] oddmatrix 0 eq test
3 3 [[0 0] [1 2] [2 1]] oddmatrix 0 eq test
1 5 [[0 2] [0 4]] oddmatrix 2 eq test
4 2 [[1 0] [3 1] [2 0] [0 1]] oddmatrix 8 eq test
test.end