World to Eye Coordinates
•Rotate World X, Y, Z to the Eye coordinate system u, v, n, also known as the View Reference Coordinate system
 a
 b
 c
 1
 x’
 y’
 z’
 1
=
ux     uy     uz    0
vx     vy     vz    0
nx     ny     nz    0
0       0      0     1