Hugo <hug### [at] yahoocombr> wrote:
> I believe that if you omit the angle keyword, the size of the "viewing 
> volume" is not affected by the position of the camera or by the look_at 
> keyword.

  Not true. The size of the projection is still determined using the
distance between location and look_at. Just try it if you don't believe me.

  If you want to move the camera around without changing the size of the
projection window, use 'translate'.

-- 
                                                          - Warp

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