Re: [info-performer] Newbie question - converting from direction vector to quaternion/matrix

From: Jason Daly (jdaly++at++ist.ucf.edu)
Date: 05/11/2005 08:20:14

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Phil Day wrote:

>Apologies for the newbie question.
>
>What is the easiest way of converting from a direction vector to a
>quaternion / 4x4 matrix?
>Having migrated from WorldToolKit to Performer I was hoping for some
>conversion functions, but there don't seem to be any.
>
>Presumably this is because it's so elementary I should know how to do it!
>
>Thanks in anticipation of your help (and lack of flaming!)
>
>
>
Try this:

quat.makeVecRotVec(pfVec3(0,1,0), directionVec);

I don't know if this is exactly what you were looking for, but it sounds
like it.

--"J"

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