text_map
text_map(map, xdiv, nice, (a->p0.y + a->p1.y) / 2 / ydiv, 0,
text_map(map, xdiv, nice, a->p0.y / ydiv,
text_map(map, xdiv, nice, a->p1.y / ydiv,
text_map(map, xdiv, nice, a->p0.y / ydiv, a->p0.x, a->p1.x);
text_map(map, xdiv, nice, (a->p0.y + a->p1.y) / 2 / ydiv,