Re: solving for multiple matrices

Jon Watte <[email protected]> Thu, 17 Sep 2009 15:32:25 -0700

Newsgroups	gmane.games.devel.algorithms
Message-ID	<[email protected]>

Andras Balogh wrote:
>
> Then it becomes:
> C = Y^-1 * D * Y
>
> Now, how do I solve this for Y? This form lookes strangely familiar, but I
> cannot figure out what to do from here (wish I knew how to Google this ;).  
> Hopefully there's an analytic solution to this. Any ideas?
>
>   

That's the formula for applying a rotation in the reference frame of 
another rotation.

Do you know anything more about these matrices than that they are 
matrices? Are they supposed to contain no scale? No translation? If you 
can formulate them as quaternions, writing out the analytical answer is 
a lot simpler :-)

Sincerely,

jw



-- 

  Revenge is the most pointless and damaging of human desires.


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