28 #include <mln/win/vline2d.hh>
29 #include <mln/convert/to_image.hh>
30 #include <mln/debug/println.hh>
40 mln_assertion(vline.delta() == 2);
45 mln_assertion((std::abs(x) <= 2 && std::abs(y) <= 2) ||
47 mln_assertion((0 == y) == vline.has(
dpoint2d(x, y)) ||