RotateSphereDragger

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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
 *
 * This library is open source and may be redistributed and/or modified under
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * OpenSceneGraph Public License for more details.
*/
//osgManipulator - Copyright (C) 2007 Fugro-Jason B.V.
 
#ifndef OSGMANIPULATOR_ROTATESPHEREDRAGGER
#define OSGMANIPULATOR_ROTATESPHEREDRAGGER 1
 
#include <osgManipulator/Dragger>
#include <osgManipulator/Projector>
 
namespace osgManipulator {

class OSGMANIPULATOR_EXPORT RotateSphereDragger : public Dragger
{
    public:
 
        RotateSphereDragger();
 
        META_OSGMANIPULATOR_Object(osgManipulator,RotateSphereDragger)
 
        
        virtual bool handle(const PointerInfo&, const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& us);

        void setupDefaultGeometry();

        inline void setColor(const osg::Vec4& color) { _color = color; setMaterialColor(_color,*this); }
        inline const osg::Vec4& getColor() const { return _color; }

        inline void setPickColor(const osg::Vec4& color) { _pickColor = color; }
        inline const osg::Vec4& getPickColor() const { return _pickColor; }
 
    protected:
 
        virtual ~RotateSphereDragger();
 
        osg::ref_ptr<SpherePlaneProjector> _projector;
 
        osg::Vec3d  _prevWorldProjPt;
        bool        _prevPtOnSphere;
        osg::Matrix _startLocalToWorld, _startWorldToLocal;
        osg::Quat   _prevRotation;
 
        osg::Vec4 _color;
        osg::Vec4 _pickColor;
};
 
 
}
 
#endif