Re: [Plib-users] Invert?

[Steve B. <sjb...@ai...>]

Brad Colbert wrote:

> What happened to the matrix inversion routines that are in the sg documentation?

*Nothing* happened!  They are alive and well...I use them all the time.

For general matrices:

  void sgInvertMat4 ( sgMat4 dst, const sgMat4 src ) ;
  void sgInvertMat4 ( sgMat4 dst ) ;

But *much* faster - if you know that the matrix is a simple
rotate+translate then:

  void sgTransposeNegateMat4 ( sgMat4 dst, const sgMat4 src ) ; 
  void sgTransposeNegateMat4 ( sgMat4 dst ) ;

...and of course there are double-precision versions.

Hmmm - the documentation seems to be correct...they work OK...

What's your problem?!?

-- 
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