Hello Kony,
> I have a question concerning the camera's field of view. I need to determine
> the last points along the coordinate axis which are visible. Now I thought I
> can use the fov field of the camera, but it does not really work. My
> camera's position is (0/8/0) and it looks in the direction (0/-1/0) [it
> looks down the y-axis]. I thought I can take the half of fov and get the
> angle of the camera for every direction. But it does not fit to the
> displayed scene.
> Can you please help me?
Could it just be because of the aspect ratio? More correctly the
camera's field of view should be called fovy, because it is the
vertical view angle. Vertical is defined in terms of the camera's
up vector, usually the y-axis. But in your case this is definitely
different. In order to get the horizontal camera range you have to
multiply by the aspect ratio which is given by the ratio
of the x- and y- resolution of your graphics window.
Manfred.
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