Just ckecking...
Did you invert the transformation after LookAt method?
ie.,
cameraTr.lookAt(eye, centre, up);
cameraTr.invert();
cameraTG.setTransform(cameraTr);
As pete described, the up vector is just the general direction that you
want it to be pointing up.
rOnn c.
On Thu, 18 Feb 1999, Pete Tinker wrote:
> I have *never* figured out what lookat does -- it certainly doesn't work as
> advertised. I end up with the wrong position and the wrong orientation.
>
> The "UP" vector supplies the "roll" information so lookat can construct a
> matrix with the proper orientation.
>
> At 04:16 PM 2/18/99 +0100, Olszowy Karine wrote:
> >Could someone tell me what is the third value of the
> >lookAt method of a Transform3D ?
> >
> >In the specification it is said that is the frustrum's
> >up direction...
> >
> >Does this function work good ?
> >
> >Thanks for your answer.
> >
> >--
> >---------------------------------------------------------------
> >- Karine OLSZOWY Ecole Superieure -
> >- 1 avenue de Provence en -
> >- 06600 ANTIBES Sciences Informatiques -
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> >- [EMAIL PROTECTED] http://www.essi.fr/~olszowy -
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> >
>
> Pete Tinker
> HRL Laboratories, LLC
> [EMAIL PROTECTED]
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