28 #include <mln/win/backdiag2d.hh>
29 #include <mln/convert/to_image.hh>
30 #include <mln/debug/println.hh>
40 mln_assertion(diag.delta() == 4);
45 mln_assertion((std::abs(x) <= 4 && std::abs(y) <= 4) ||
47 mln_assertion((x == y) == diag.has(
dpoint2d(x, y)) ||