ConstrainedTrackballManipulator.h

#ifndef CONSTRAINEDTRACKBALLMANIPULATOR_H
#define CONSTRAINEDTRACKBALLMANIPULATOR_H

#include <osgGA/TrackballManipulator>

class ConstrainedTrackballManipulator : public osgGA::TrackballManipulator
{
    public:
        ConstrainedTrackballManipulator(double maxTilt);

    protected:
        osg::Vec3d defaultUp;
        double maxTilt;

        virtual void rotateTrackball( const float px0, const float py0,
                                      const float px1, const float py1, const float scale );
};

#endif // CONSTRAINEDTRACKBALLMANIPULATOR_H