v 4 -3.99615 4.0667
v 4 -3.82069 3.08221
v -4 -3.82069 3.08221
v -4 -3.82069 3.08221
v -4 -3.99615 4.0667
v 4 -3.99615 4.0667
f 1 2 3
f 4 5 6