Re: [Plib-users] camera orientation

[Steve B. <sjb...@ai...>]

Reed Hedges wrote:

> Is there a way to get the camera orientation, or a position/orientation
> matrix?

Yes.  If you are using an ssgContext (the "new" way to do things) then

  ssgContext::getModelviewMatrix

...(that's actually the inverse of the camera matrix).

> Or, if not, what is the best way to turn the camera by some amount
> around some axis?

It's a very bad idea to incrementally update the camera matrix because
roundoff error will accumulate in a way that will result in something
that's no longer a simple rotate/translate matrix.

OTOH, Eulers are Evil...so you probably should read this.

  http://www.sjbaker.org/steve/omniv/eulers_are_evil.html

----------------------------- Steve Baker -------------------------------
Mail : <sjb...@ai...>   WorkMail: <sj...@li...>
URLs : http://www.sjbaker.org
       http://plib.sf.net http://tuxaqfh.sf.net http://tuxkart.sf.net
       http://prettypoly.sf.net http://freeglut.sf.net
       http://toobular.sf.net   http://lodestone.sf.net