marker_semiellipse_left
case marker_semiellipse_left: semiellipse_left(x, y, r); break;
case marker_semiellipse_left: do { semiellipse_left (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_semiellipse_left: do { semiellipse_left (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_semiellipse_left: do { base_type::fill_color(*fc); semiellipse_left (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_semiellipse_left: do { base_type::fill_color(*fc); base_type::line_color(*lc); semiellipse_left (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;