ANNULUS REGION 0.0 30.0 20.0 0.25 0.5 10 500 2 24 1 2 26 0 1.0000000 0.0000000 0.9238795 0.3826834 0.7071068 0.7071068 0.3826834 0.9238795 0.0000000 1.0000000 -0.3826834 0.9238795 -0.7071068 0.7071068 -0.9238795 0.3826834 -1.0000000 0.0000000 -0.9238795 -0.3826834 -0.7071068 -0.7071068 -0.3826834 -0.9238795 0.0000000 -1.0000000 0.3826834 -0.9238795 0.7071068 -0.7071068 0.9238795 -0.3826834 0.7500000 0.0000000 0.6767767 0.1767767 0.5000000 0.2500000 0.3232233 0.1767767 0.2500000 0.0000000 0.3232233 -0.1767767 0.5000000 -0.2500000 0.6767767 -0.1767767 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 -1 17 24 23 22 21 20 19 18 -17