Sprites and Objects - Android Games Practical Programming by Example - page 58

The main character images are stored in a Bitmap sheet, which contains 4 x 4 subsets
(frames) with identical sizes (w x h = 90 x 120) as shown in figure 3.2. To traverse all the
subsets in a Bitmap sheet and cut them out for animations, a method cutBitmap() will be
introduced further down.
Figure 3.2 Main Character Bitmap Sheet