/* -*-c++-*- osgVisual - Copyright (C) 2009-2012 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 "DistortionSet.h"
#include <osgDB/ObjectWrapper>
#include <osgDB/InputStream>
#include <osgDB/OutputStream>

using namespace osgViewer;

DistortionSet::DistortionSet()
{
	_meshDirty = false;
	_matrixDirty = false;

	_distortionMeshRows = 2;
	_distortionMeshColumns = 2;
	_distortionMesh = new osg::Vec4Array();
	
	_intensityMap = NULL;
	_texUnitScene = 0;
	_texUnitIntensityMap = 1;

	_viewOffset = osg::Matrixd::identity();
	_projectionOffset = osg::Matrixd::identity();

	_showIntesityMapMapOnly = false;

	_sceneCamera = NULL;
	_distortionCamera = NULL;
	_distortionInternals = NULL;

	_distortionInternals = new osg::Switch();

}

DistortionSet::~DistortionSet()
{
}

void DistortionSet::setDistortionMeshDimensions(int rows, int cols)
{
	_distortionMeshRows = rows;
	_distortionMeshColumns = cols;

	if(_distortionMesh->size() != _distortionMeshRows * _distortionMeshColumns)	// If dimensions differ: discard current mesh and create a new one
	{
		_distortionMesh = new osg::Vec4Array(_distortionMeshRows * _distortionMeshColumns);
		for(int row=0;row<_distortionMeshRows;row++)
		{
			for(int col=0;col<_distortionMeshColumns;col++)
			{
				float x=col/_distortionMeshColumns;	// Vertex X
				float y=row/_distortionMeshRows;	// Vertex Y
				float z=col/_distortionMeshColumns;	// TexCoord X
				float w=row/_distortionMeshRows;	// TexCoord Y

				_distortionMesh->at(row*_distortionMeshColumns+col).set(x,y,z,w);
			}
		}
	}
}


REGISTER_OBJECT_WRAPPER( osgViewer_DistortionSet,                  // The unique wrapper name
                         new osgViewer::DistortionSet,             // The proto
                         osgViewer::DistortionSet,                 // The class typename
                         "osg::Object osgViewer::DistortionSet" )  // The inheritance relations
{
    // Serializers for different members
	ADD_INT_SERIALIZER( DistortionMeshRows, 1 );	//int _distortionMeshRows;
	ADD_INT_SERIALIZER( DistortionMeshColumns, 1 );	//int _distortionMeshColumns;
	ADD_OBJECT_SERIALIZER( DistortionMesh, osg::Vec4Array, NULL );	// x,y = vertex coordinates, z,t=textureCoordinates, Werte sind normalisiert auf 0-1

    ADD_GLENUM_SERIALIZER( MeshType, GLenum, GL_QUAD_STRIP );  //osg::PrimitiveSet::Mode _MeshType
	
	ADD_IMAGE_SERIALIZER( IntensityMap, osg::Image, NULL );  //osg::ref_ptr<osg::Image> _intensityMap;

	ADD_UINT_SERIALIZER( TexUnitScene, 0 );	//unsigned int _texUnitScene;
	ADD_UINT_SERIALIZER( TexUnitIntensityMap, 1 );	//unsigned int _texUnitIntensityMap;

	ADD_MATRIX_SERIALIZER( ViewOffset, osg::Matrix() );	//osg::Matrix _viewOffset;
	ADD_MATRIX_SERIALIZER( ProjectionOffset, osg::Matrix() );	//osg::Matrix _projectionOffset;

	ADD_BOOL_SERIALIZER( ShowIntensityMapOnly, false );	//bool _showIntesityMapMapOnly
}