You can't negate an euler parameterization like QAngles to invert it except in special cases (e.g. your QAngle is zero on two axes).
matrix3x4_t boneTransform; AngleMatrix( aHitBoxAngles, vHitBoxPos, boneTransform ); Then you can VectorRotate() and VectorIRotate() to perform forward / inverse rotations. Jay > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Janek > Sent: Thursday, April 23, 2009 8:31 AM > To: Discussion of Half-Life Programming > Subject: Re: [hlcoders] VectorRotate > > This is the question I am thinking about. Sounds like the > answer is no. I'm > trying to determine which transformation of the angles I have > to do. If > somebody knows, I get it :) > > 2009/4/23 Jonas 'Sortie' Termansen <[email protected]> > > > Can you really invert the angle like that in 3 Dimensional space? > > > > ----- Original Message ----- > > From: "Janek" <[email protected]> > > To: "Discussion of Half-Life Programming" > <[email protected] > > > > > Sent: Thursday, April 23, 2009 5:09 PM > > Subject: [hlcoders] VectorRotate > > > > > > > Hi all, > > > > > > There is something I don't understand with VectorRotate > method. I did the > > > following test : > > > > > > Vector vHitBoxPos; > > > QAngle aHitBoxAngles; > > > mstudiobbox_t *pbox = set->pHitbox(j); > > > if ( !pbox ) > > > continue; > > > pPlayer->GetBonePosition( pbox->bone, vHitBoxPos, aHitBoxAngles ); > > > > > > Vector vBefore (10,10,10); > > > Vector vAfter; > > > VectorRotate( vBefore , aHitBoxAngles, vAfter ); > > > > > > Vector vBefore2; > > > VectorRotate( vAfter, -aHitBoxAngles, vBefore2 ); > > > > > > I can see that vBefore2 has nothing to see with vBefore > even if I thought > > > it > > > should. How can I find back vBefore using vAfter and > aHitBoxAngles ? > > > > > > Thank you in advance for your help. > > > > > > ------------------- > > > j...@nek > > > _______________________________________________ > > > To unsubscribe, edit your list preferences, or view the > list archives, > > > please visit: > > > http://list.valvesoftware.com/mailman/listinfo/hlcoders > > > > > > > > > _______________________________________________ > > To unsubscribe, edit your list preferences, or view the > list archives, > > please visit: > > http://list.valvesoftware.com/mailman/listinfo/hlcoders > > > > > > > -- > ------------------- > j...@nek > _______________________________________________ > To unsubscribe, edit your list preferences, or view the list > archives, please visit: > http://list.valvesoftware.com/mailman/listinfo/hlcoders > > _______________________________________________ To unsubscribe, edit your list preferences, or view the list archives, please visit: http://list.valvesoftware.com/mailman/listinfo/hlcoders
