Warp wrote:
> 
>>But 
>>automatic aspect ratio is not as easy as it might seem because there are 
>>at least two ways to implement it (automatic right vector length or 
>>automatic up vector length).
> 
> 
>   Have you actually tried them? They do exactly the same thing: The viewing
> area is always modified vertically, never horizontally. (If you wanted
> automatic horizontal viewing area change, you would have to deal with
> both 'right' and 'angle', with a less trivial formula.)

It works perfectly with an orthographic camera.  With perspective it is 
indeed quite complicated but this does not mean it would not be possible 
implement an automatic aspect ratio in both ways i described.

Christoph

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