Implementing a vector-based camera with FPS style input support

We will begin this chapter by designing a simple class to handle the camera. In a typical OpenGL application, the viewing operations are carried out to place a virtual object on screen. We leave the details of the transformations required in between to a typical graduate text on computer graphics like the one given in the See also section of this recipe. This recipe will focus on designing a simple and efficient camera class. We create a simple inheritance from a base class called CAbstractCamera. We will inherit two classes from this parent class, CFreeCamera and CTargetCamera, as shown in the following figure:

Getting ready

The code for this recipe is in the Chapter2/src directory. The CAbstractCamera class is defined in the AbstractCamera.[h/cpp] files.

class CAbstractCamera
{
public:
  CAbstractCamera(void);
  ~CAbstractCamera(void);
  void SetupProjection(const float fovy, const float aspectRatio, const float near=0.1f, const...