main/include/Sun.h

/*
This file is part of Caelum.
See http://www.ogre3d.org/wiki/index.php/Caelum 

Copyright (c) 2006-2007 Caelum team. See Contributors.txt for details.

Caelum 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 3 of the License, or
(at your option) any later version.

Caelum 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with Caelum. If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef SUN_H
#define SUN_H

#include "CaelumPrerequisites.h"
#include "CameraBoundElement.h"
#include "SkyLight.h"

namespace caelum {

class BaseSkyLight;     // abstract
class SphereSun;    // deprecated
class SpriteSun;

typedef SpriteSun Sun;
//========================================================================================================================

class CAELUM_EXPORT SphereSun : public BaseSkyLight {
// Attributes -----------------------------------------------------------------
    public:
        static const Ogre::String SUN_MATERIAL_NAME;

    private:
        Ogre::Entity *mSunEntity;

        Ogre::MaterialPtr mSunMaterial;

// Methods --------------------------------------------------------------------
    public:
        SphereSun (Ogre::SceneManager *sceneMgr,
            Ogre::SceneNode *caelumRootNode,
            const Ogre::String &meshName = "sphere.mesh");

        virtual ~SphereSun ();

        void setBodyColour (const Ogre::ColourValue &colour);

    public:
        virtual void notifyCameraChanged (Ogre::Camera *cam);
};

//========================================================================================================================

class CAELUM_EXPORT SpriteSun : public BaseSkyLight {
// Attributes -----------------------------------------------------------------
    public:
        static const Ogre::String SUN_MATERIAL_NAME;

    protected:
        Ogre::BillboardSet* mSunBillboardSet;
        
        Ogre::MaterialPtr mSunMaterial;

        Ogre::Degree mSunTextureAngularSize;

// Methods --------------------------------------------------------------------
    public:
        SpriteSun (Ogre::SceneManager *sceneMgr,
            Ogre::SceneNode *caelumRootNode,
            const Ogre::String& sunTextureName = "sun_disc.png", 
            const Ogre::Degree& sunTextureAngularSize = Ogre::Degree(3.77f)); // 0.53f is real angular size of Sun and Moon, 3.77f is compatible with SphereSun

        virtual ~SpriteSun ();

        void setSunTexture (const Ogre::String &textureName);
        
        void setSunTextureAngularSize(const Ogre::Degree& sunTextureAngularSize);

        void setBodyColour (const Ogre::ColourValue &colour);

    public:
        virtual void notifyCameraChanged (Ogre::Camera *cam);
};
}

#endif //SUN_H

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