ShadowTexture.h

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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.
*/

#ifndef OSGSHADOW_SHADOWETEXTURE
#define OSGSHADOW_SHADOWETEXTURE 1

#include <osg/Camera>
#include <osg/Material>

#include <osgShadow/ShadowTechnique>

namespace osgShadow {

class OSGSHADOW_EXPORT ShadowTexture : public ShadowTechnique
{
    public :
        ShadowTexture();

        ShadowTexture(const ShadowTexture& es, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);

        META_Object(osgShadow, ShadowTexture);

        void setTextureUnit(unsigned int unit);

        unsigned int getTextureUnit() const { return _textureUnit; }


        virtual void init();

        virtual void update(osg::NodeVisitor& nv);

        virtual void cull(osgUtil::CullVisitor& cv);

        virtual void cleanSceneGraph();


    protected :

        virtual ~ShadowTexture() {}

        osg::ref_ptr<osg::Camera>       _camera;
        osg::ref_ptr<osg::TexGen>       _texgen;
        osg::ref_ptr<osg::Texture2D>    _texture;
        osg::ref_ptr<osg::StateSet>     _stateset;
        osg::ref_ptr<osg::Material>     _material;
        unsigned int                    _textureUnit;
};

}

#endif