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FromTrackball() corrected

This commit is contained in:
Paolo Cignoni 2005-02-11 11:43:09 +00:00
parent 0233f3799a
commit abaae0c2fd
1 changed files with 15 additions and 10 deletions
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25
wrap/gl/shot.h
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@ -23,6 +23,9 @@
/****************************************************************************
History
$Log: not supported by cvs2svn $
Revision 1.4 2004/12/15 18:45:06 tommyfranken
*** empty log message ***
Revision 1.3 2004/11/03 09:41:57 ganovelli
added FromTrackball and fixed include names (Poiint to point)
@ -116,23 +119,25 @@ static void UnsetView()
glPopAttrib();
}
// takes a shot and a trackball and retursn the shot corresponding to the transformation
// applied by the trackball
/**********************************
DEFINE SHOT FROM TRACKBALL
Adds to a given shot the trackball transformations.
After this operation the trackball should be resetted, to avoid
multiple apply of the same transformation.
***********************************/
static void FromTrackball(const vcg::Trackball & tr,
const vcg::Shot<ScalarType> & sShot,
vcg::Shot<ScalarType> & shot )
{
vcg::Point3<ScalarType> vp = sShot.ViewPoint();
vcg::Point3<float> vpf = vcg::Point3<float>(vp[0],vp[1],vp[2]);
vcg::Matrix44<float> trInvM = tr.track.InverseMatrix();
Point3<ScalarType> cen; cen.Import(tr.center);
Point3<ScalarType> tra; tra.Import(tr.track.tra);
Matrix44<ScalarType> trM; trM.FromMatrix(tr.track.Matrix());
vcg::Matrix44<ScalarType> trM; /*=*/ trM.FromMatrix(tr.track.Matrix());
Point3<ScalarType> vp = Inverse(trM)*(sShot.ViewPoint()-cen) +cen +tra;
vcg::Point3<float> nvp = trInvM*vpf;// nvp = shInvM*nvp;
shot.SetViewPoint(vcg::Point3<ScalarType>(nvp[0],nvp[1],nvp[2]));
shot.SetViewPoint(vp);
shot.similarity.rot = sShot.similarity.rot*trM;
shot.similarity.sca = sShot.similarity.sca*tr.track.sca;
shot.similarity.sca = sShot.similarity.sca*(ScalarType)tr.track.sca;
}
};
#endif