Unformatted text preview: etc.). The positive normal for the surface is pointing away from the center of the tetrahedron. The veiwer is locate in world coordinates at (x,y,z)=(10,10,10) and the viewing direction is (1,1,1). 3. For each visible surface determined in Problem 2, compute the intensity of the diffuse reflection R d using the Phong model. Assume E p =100, K s =.50, D =0 and n=1. The light is assumed to be located in world coordinates at (x,y,z)=(10,20,10) and the viewer is located in world coordinates at (x,y,z)=(10,10,10) and the viewing direction is (1,1,1). 4 2 1 3 x y z...
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 Winter '07
 Ardema
 Mechanical Engineering, Light, Computer Graphics, Rotation, world coordinates

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