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Quick 'n dirty fix to TrackballManipulator to get the rotations doing the

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right things after the Quat fixes.
This commit is contained in:
Don BURNS 2001-10-14 05:14:37 +00:00
parent e8edf1f6e6
commit 0e8c2ef89b
1 changed files with 9 additions and 2 deletions
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11
src/osgUtil/TrackballManipulator.cpp
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@ -178,7 +178,7 @@ bool TrackballManipulator::calcMovement()
// return if less then two events have been added.
if (_ga_t0.get()==NULL || _ga_t1.get()==NULL) return false;
float dx = dx = _ga_t0->getX()-_ga_t1->getX();
float dx = _ga_t0->getX()-_ga_t1->getX();
float dy = _ga_t0->getY()-_ga_t1->getY();
// return if there is no movement.
@ -325,7 +325,14 @@ void TrackballManipulator::trackball(osg::Vec3& axis,float& angle, float p1x, fl
/*
* Now, we want the cross product of P1 and P2
*/
axis = p1^p2;
// Robert,
//
// This was the quick 'n' dirty fix to get the trackball doing the right
// thing after fixing the Quat rotations to be right-handed. You may want
// to do something more elegant.
// axis = p1^p2;
axis = p2^p1;
axis.normalize();
/*