Re: pfDCS question

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Jim Helman (jimh++at++surreal)
Wed, 20 Oct 93 22:55:24 -0700

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> How do pfDCS calls affect each other? For example:
>
> pfDCS *dcs;
>
> pfDCSMat (dcs, some_matrix);
> pfDCSRot (dcs, h, p, r);
>
> How about the reverse case?
>
> pfDCSRot (dcs, h, p, r);
> pfDCSMat (dcs, some_matrix);

I'm not sure if anyone answered this. The principal is
one of replacement rather than concatentation. pfDCSMat
"replaces" the entire 4x4 matrix. pfDCSRot replaces the
rotational component of the matrix, preserving the
existing scale or translation.

rgds,

-jim helman

jimh++at++surreal.asd.sgi.com
415/390-1151

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