#pragma once 
/* -*-c++-*- osgVisual - Copyright (C) 2009-2011 Torben Dannhauer
 *
 * This library is based on OpenSceneGraph, 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.
 *
 * osgVisual requires for some proprietary modules a license from the correspondig manufacturer.
 * You have to aquire licenses for all used proprietary modules.
 * 
 * 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.
*/

#include <osgGA/CameraManipulator>
#include <osg/Referenced>
#include <osgViewer/Viewer>


namespace osgGA
{ 

/**
 * \brief This class is a placebo manipulator, which doexs nothing.
 Its purpose is to allow the mixed setup of manipulators together with plain setting of cameras view and projection matrix.
 * 
 * @author Torben Dannhauer
 * @date  Jul 2012
 */ 
class PlaceboManipulator : public CameraManipulator
{
    public:
		/**
		 * \brief Constructor
		 * 
		 */ 
        PlaceboManipulator();

		/**
		 * \brief This function returns the classname.
		 * 
		 * @return Classname of this manipulator.
		 */ 
        virtual const char* className() const { return "PlaceboManipulator"; }

		/**
		 * \brief Set the position of the matrix manipulator using a 4x4 Matrix.
		 * 
		 * @param matrix : Matrix to set.
		 */ 
        virtual void setByMatrix(const osg::Matrixd& matrix);

		/**
		 * \brief Set the position of the matrix manipulator using a 4x4 Matrix.
		 * 
		 * @param matrix : Inverse Matrix to set.
		 */ 
        virtual void setByInverseMatrix(const osg::Matrixd& matrix) { setByMatrix(osg::Matrixd::inverse(matrix)); }

        /** get the position of the manipulator as 4x4 Matrix.*/
        virtual osg::Matrixd getMatrix() const;

        /** get the position of the manipulator as a inverse matrix of the manipulator, typically used as a model view matrix.*/
        virtual osg::Matrixd getInverseMatrix() const;

		/**
		 * \brief Start/restart the manipulator.
		 * 
		 * No further implementation
		 * 
		 * @param ea : GUI eventadapter to use for initialization. 
		 * @param us : GUI actionadapter to use for initialization. 
		 */ 
        virtual void init(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& us);

        /** handle events, return true if handled, false otherwise.*/
		virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa, osg::Object*, osg::NodeVisitor* nv);

        /** Get the keyboard and mouse usage of this manipulator.*/
        virtual void getUsage(osg::ApplicationUsage& usage) const;



    protected:
		/**
		 * \brief Destructor. Because it is protected, no explicit delete myPointer by external caller is possible.
		 * This forces the class to be used with osg::ref pointers.
		 */ 
        virtual ~PlaceboManipulator();

		osg::Matrixd  modelViewMatrix;

};

}	// END NAMESPACE