/* -*-c++-*- */
/* osgEarth - Geospatial SDK for OpenSceneGraph
* Copyright 2008-2012 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>
*/
#ifndef OSGEARTH_CESIUM_CREDITSNODE_H
#define OSGEARTH_CESIUM_CREDITSNODE_H

#include "Export"
#include <osg/Group>
#include <osg/View>
#include <osg/Texture2D>
#include <CesiumUtility/CreditSystem.h>
#include <memory>

namespace osgEarth {
    namespace Cesium
    {
        using namespace osgEarth;

        class OSGEARTHCESIUM_EXPORT CesiumCreditsNode : public osg::Group
        {
        public:
            CesiumCreditsNode(osg::View* view, CesiumUtility::CreditSystem* creditSystem);
            virtual void traverse(osg::NodeVisitor& nv);
            

        private:

            void nextFrame();
            void updateCredits();

            osg::Texture2D* getOrCreateTexture(const std::string& url);
            std::map< std::string, osg::ref_ptr< osg::Texture2D > > _textureCache;


            std::vector< std::string > _credits;
            osg::Camera* _camera;
            osg::observer_ptr< osg::View > _view;
            std::shared_ptr< CesiumUtility::CreditSystem > _creditSystem;
        };
    }
}


#endif // OSGEARTH_CESIUM_CREDITSNODE_H
