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Re: calculating rotations from a transformation matrix [message #50211]

Mon, 18 September 2006 09:36

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Rick Towler writes:

> See http://www.flipcode.com/documents/matrfaq.html#Q37

The discussion of Quaternions on this page inspired me:

Yo mama's so dumb she thinks "Gimble lock" is what you
spread on bagels.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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Re: calculating rotations from a transformation matrix [message #50212 is a reply to message #50211]

Mon, 18 September 2006 09:25

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

See http://www.flipcode.com/documents/matrfaq.html#Q37

Note that you can set !P.T directly with your transform matrix and you
wouldn't have to do this dance.

-Rick

nivedita.raghunath@gmail.com wrote:
> Hello all,
>
> I have a 4x4 transformation matrix. Is there a way to calculate x,y,z
> rotation angles from this matrix ?
>
> I need to find out individual x,y,z rotations to use w/ T3D.
>
> Any help would be appreciated !
>
> Thank you,
> Nivedita
>

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