Beginning Android 4 Games Development

Simple Cameras

In the previous chapter, we talked about two ways to create a camera. The first one, the Euler camera, was similar to what is used in first-person shooters. The second one, the look-at camera, is used for cinematic camera work or for following an object. Let's create two helper classes that we can use in our games.

The First-Person or Euler Camera

The first-person or Euler camera is defined by the following attributes:

• The field of view in degrees.
• The viewport aspect ratio.
• The near and far clipping planes.
• A position in 3D space.
• An angle around the y-axis (yaw).
• An angle around the x-axis (pitch). This is limited to the range −90 to +90 degrees. Think how far you can tilt your own head and try to go beyond those angles! We ...