Chapter 6
Moving Things Around: Affine Maps in 2D
Imagine playing a video game. As you press a button, figures and objects on the screen start moving around; they shift their positions, they rotate, they zoom in or out. As you see this kind of motion, the game software must carry out quite a few transformations. In Figure 6.1, they have been applied to a familiar face in gaming. These computations are implementations of affine maps, the subject of this chapter.
Figure 6.1
Moving things around: affine maps in 2D applied to an old and familiar video game character.
6.1 Coordinate Transformations
In Section 4.1 the focus was on constructing a linear ...
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