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