To do a final check on the model, you can use the polygon cleanup tool. You must use this tool carefully. Be sure that the model is inspected carefully before the results of this tool are accepted; this tool can cause major problems to otherwise usable models.
The original sketch had a baseball cap on the head of the character. This was an attempt to avoid what became a difficult process of making many layers of NURBS surfaces into hair. Many computer-generated characters use layers of NURBS surfaces to create hair. This character was supposed to be a young guy who did not pay careful attention to hair care, so the hairstyle would have to be loose.
Figures 33 and 34 show some of the progression from long hair to the relatively clean-cut look.
The eyes were built from three NURBS spheres nested inside each other:
2. A colored interior layer (the iris). This layer has a recessed, or concave, area around the color of the iris that reacts to light. When light is directed above the eye, the iris will have additional reflection that occurs beneath the pupil. This anatomy is physiologically incorrect, but this lighting has become an accepted way that eyes appear in computer-generated characters. The characters in the Pixar films and the PDI films have their eyes constructed in a similar manner. The opening for the pupil is simply a hole that has a cluster that controls the diameter of the hole. This allows for animation of the size of the pupil.
3. A black inner layer (the pupil). This layer is adapted to fit the iris. The shader on this layer is a black surface shader that emits no light whatsoever.
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