Re: quat to euler

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Angus Dorbie (dorbie++at++sgi.com)
Thu, 06 May 1999 12:03:42 -0700

You should also be aware that for any orientation more than one
combination of Euler angles can create the same result and hence
deriving the Euler angles from the matrix may produce a correct
solution, just not the one you had in mind.

Cheers,Angus.

h.d. pfeffer wrote:
>
> Hi all
>
> I'm trying to calculate the euler angles of a quaternion x y z a.
>
> pfQuat quat.set(x,y,z,a);
> pfMatrix mat.makeQuat(quat);
> mat.getOrthoCoord(&coord);
>
> 1. I suppose there is a better way to get the euler angles
> 2. the result of coord.hpr is not the one I expected
>
> Any suggestions ?
>
> Thanks
>
> Dieter
>
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