1. In what way is the process of hidden-surface removal more complex than back face elimination? Explain your answer. 2. How is movement produced on screen in animation? 3. In our discussion of...

1.
In what way is the process of hidden-surface removal more complex than back face elimination? Explain your answer.

2.
How is movement produced on screen in animation?

3.
In our discussion of hidden-surface removal, we described the procedure for solving the “foreground/background” problem with the aid of a z-buffer. Express that procedure using the pseudocode introduced in Chapter 5.

4.
Suppose the surface of an object is covered by alternating orange and blue vertical stripes, each of which is one centimeter wide. If the object is positioned in a scene so that the pixel positions are associated with points on the object spaced at two-centimeter intervals, what would be the possible appearances of the object in the final image? Explain your answer.