6.6. Animating along a circle

There is absolutely no reason why you should be limited to moving shapes in straight lines. What if you want to animate something to move around a circle, like an orbit (see Figure 6-7)? The good news is that it's completely possible, and it doesn't use much code; the bad news is that it uses trigonometry, which might take a little while to get your head around.

Figure 6.7. Animating a shape in a circular orbit