/* -*-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 OSGEARTHUTIL_SKYVIEW_H
#define OSGEARTHUTIL_SKYVIEW_H

#include <osgEarth/Common>
#include <osgEarth/ImageLayer>
#include <osgEarth/LayerReference>

namespace osgEarth { namespace Contrib
{
    /**
     * Image layer intended to be viewed from the inside.
     */
    class OSGEARTH_EXPORT SkyViewImageLayer : public ImageLayer
    {
    public:
        class OSGEARTH_EXPORT Options : public ImageLayer::Options {
        public:
            META_LayerOptions(osgEarth, Options, ImageLayer::Options);
            OE_OPTION_LAYER(ImageLayer, imageLayer);
            virtual Config getConfig() const;
            static Config getMetadata();
        private:
            void fromConfig(const Config& conf);
        };

    public:
        META_Layer(osgEarth, SkyViewImageLayer, Options, ImageLayer, SkyView);

        //! Image layer to render in skyview mode
        void setImageLayer(ImageLayer* layer) { options().imageLayer().setLayer(layer); }
        ImageLayer* getImageLayer() const { return options().imageLayer().getLayer(); }

    public: // Layer

        //! Called by constructors
        void init();

        //! Establishes a connection to the WMS service
        Status openImplementation();

        //! Return an image for a key.
        GeoImage createImageImplementation(const TileKey& key, ProgressCallback* progress) const;

        virtual Config getConfig() const;

    protected:

        //! Destructor
        virtual ~SkyViewImageLayer() { }
    };

} } // namespace osgEarth:Contrib

OSGEARTH_SPECIALIZE_CONFIG(osgEarth::Contrib::SkyViewImageLayer::Options);


#endif // OSGEARTHUTIL_SKYVIEW_H