Icosahedron vertices and faces

// 0.809017 = (1.0f + sqrt(5.0f)) / 2 / 2 (half the length of the golden rectangle)
vertices:
        (-0.809017,   0,         0.5)
        (-0.809017,   0,        -0.5)
        (0.809017,    0,        -0.5)
        (0.809017,    0,         0.5)
        (-0.5,        0.809017,  0)
        (0.5,         0.809017,  0)
        (0.5,        -0.809017,  0)
        (-0.5,       -0.809017,  0)
        (0,           0.5,       0.809017)
        (0,           0.5,      -0.809017)
        (0,          -0.5,      -0.809017)
        (0,          -0.5,       0.809017)

faces:
        (0, 1, 4)
        (0, 1, 7)
        (0, 4, 8)
        (0, 7, 11)
        (0, 8, 11)
        (1, 4, 9)
        (1, 7, 10)
        (1, 9, 10)
        (2, 3, 5)
        (2, 3, 6)
        (2, 5, 9)
        (2, 6, 10)
        (2, 9, 10)
        (3, 5, 8)
        (3, 6, 11)
        (3, 8, 11)
        (4, 5, 8)
        (4, 5, 9)
        (6, 7, 10)
        (6, 7, 11)