/* -*-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 "PlaceboManipulator.h"



using namespace osg;
using namespace osgGA;

PlaceboManipulator::PlaceboManipulator()
{
}

PlaceboManipulator::~PlaceboManipulator()
{
}

void PlaceboManipulator::init(const GUIEventAdapter& ,GUIActionAdapter& )
{
}

void PlaceboManipulator::getUsage(osg::ApplicationUsage& usage) const
{
}

bool PlaceboManipulator::handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa, osg::Object*, osg::NodeVisitor* nv)
{
	osg::observer_ptr< osgViewer::Viewer > viewer = dynamic_cast<osgViewer::Viewer*>( &aa );
	if( viewer.valid() && ea.getEventType()==osgGA::GUIEventAdapter::FRAME)
		modelViewMatrix = viewer->getCamera()->getViewMatrix();
	else
		OSG_ALWAYS << "PlaceboManipulator::handle() : Unable to cast osgGA::GUIActionAdapter to osgViewer." << std::endl;

    return false;
}

void PlaceboManipulator::setByMatrix(const osg::Matrixd& matrix)
{
	modelViewMatrix = osg::Matrixd::inverse(matrix);
}

osg::Matrixd PlaceboManipulator::getMatrix() const
{
	return osg::Matrixd::inverse(modelViewMatrix);
}

osg::Matrixd PlaceboManipulator::getInverseMatrix() const
{
	return modelViewMatrix;
}