Subject: Re: Lineal algebra problem
>> Positive "x" is at the right and positive "y" is up. I need to move the
>> camera to a point P1 (the look-from) pointing to another point P2 (the
>> look-to). Is there a general procedure to do this with translations and
> Not really. No. The problem is that eye point and look-at point
> combined don't fully fix the orientation of your camera. You still
> have to determine roll (around the view axis), and potentially other
> parameters, like field-of-view / focal length.
in my case, for my answer I made the assumptions:
presumably, the camera is already "upright", so no need to consider roll;
field of view is unchangable.
in this case, the answer becomes simply:
point at target.
and the "point at target" can be defined as 2 angles.
"better" answers imply a more fluid definition of the camera, eg: can/has to
deal with arbitrary orientation (and a possible seperation of world and
can adjust things like field of view (implying some notion of "how big" the
object being looked at is relative to the camera);
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Re: Lineal algebra problem
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