vertices = dimension1:72 dimension2:72

u = from 0 to (2*PI) dimension1
v = from (-PI*0.5) to (PI*0.5) dimension2

x = cos(v)*sin(u)
y = sin(v)
z = cos(v)*cos(u)

a = 10.0

r = (x+1.0)/2
g = (y+1.0)/2
b = (z+1.0)/2

x = a*x
y = a*y
z = a*z