StelSkyImageTile.hpp

/*
 * Copyright (C) 2008 Fabien Chereau
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA  02110-1335, USA.
 */


#ifndef _STELSKYIMAGETILE_HPP_
#define _STELSKYIMAGETILE_HPP_

#include <QTimeLine>

#include "MultiLevelJsonBase.hpp"
#include "StelSphereGeometry.hpp"

//#define DEBUG_STELSKYIMAGE_TILE 1

class QIODevice;
class StelCore;

class ServerCredits
{
public:
    QString shortCredits;

    QString fullCredits;

    QString infoURL;
};

class DataSetCredits
{
public:
    QString shortCredits;

    QString fullCredits;

    QString infoURL;
};

class StelSkyImageTile : public MultiLevelJsonBase
{
    Q_OBJECT

    friend class StelSkyLayerMgr;

public:
    StelSkyImageTile();

    StelSkyImageTile(const QString& url, StelSkyImageTile* parent=NULL);
    StelSkyImageTile(const QVariantMap& map, StelSkyImageTile* parent);

    ~StelSkyImageTile();

    void draw(StelCore* core, class StelRenderer* renderer, StelProjectorP projector, float opacity=1.);

    DataSetCredits getDataSetCredits() const {return dataSetCredits;}

    ServerCredits getServerCredits() const {return serverCredits;}

    bool isReadyToDisplay() const;

    QVariantMap toQVariantMap() const;

    QString getAbsoluteImageURI() const {return absoluteImageURI;}

    virtual QString getLayerDescriptionHtml() const {return htmlDescription;}

protected:
    virtual void loadFromQVariantMap(const QVariantMap& map);

    ServerCredits serverCredits;

    DataSetCredits dataSetCredits;

    QString absoluteImageURI;

    float luminance;

    bool alphaBlend;

    bool noTexture;

    QList<SphericalRegionP> skyConvexPolygons;

    class StelTextureNew* tex;

    float minResolution;

private:
    void initCtor();

    void getTilesToDraw(QMultiMap<double, StelSkyImageTile*>& result, 
                        StelCore* core, 
                        StelRenderer* renderer,
                        const SphericalRegionP& viewPortPoly,
                        float limitLuminance, 
                        bool recheckIntersect=true);

    bool drawTile(StelCore* core, StelRenderer* renderer, StelProjectorP projector);

    double getMinResolution() const {return minResolution;}

    QVariantList subTilesUrls;

    // Used for smooth fade in
    QTimeLine* texFader;

    QString htmlDescription;
};

#endif // _STELSKYIMAGETILE_HPP_