SO3DeferredLightAmbient.h

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/*
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This source file is part of OpenSpace3D
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Copyright (c) 2012 I-maginer
 
This program 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.
 
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 Lesser General Public License for more details.
 
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt
 
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*/
 
#ifndef __SO3_DEFERRED_SHADING_LIGHT_AMBIENT_H__
#define __SO3_DEFERRED_SHADING_LIGHT_AMBIENT_H__
 
#include "SO3DeferredLightAmbientMaterialGenerator.h"
#include <OgreSimpleRenderable.h>
 
namespace SO3
{
 
/*
Renderable for rendering Ambient component and also to establish the depths
Note that instantiation is necessary to at least establish the depths even if the current ambient colour is 0
Its ambient colour is same as the scene's ambient colour
TODO Could make this a singleton/make it private to the DeferredShading
*/
class SDeferredLightAmbient : public Ogre::SimpleRenderable
{
public:
protected:
private:
  Ogre::Real radius;
  SDeferredLightMaterialGenerator* ambientLightMaterialGenerator;
 
public:
  SDeferredLightAmbient(SDeferredLightMaterialGenerator* typeLightMaterialGenerator);
        
  ~SDeferredLightAmbient();
 
  virtual Ogre::Real getBoundingRadius() const;
        
  virtual Ogre::Real getSquaredViewDepth(const Ogre::Camera*) const;
        
  virtual const Ogre::MaterialPtr& getMaterial() const;
 
  virtual void getWorldTransforms(Ogre::Matrix4* xform) const;
 
  void UpdateFromCamera(Ogre::Camera* camera);
protected:
private:
  SDeferredLightAmbient();
};
 
}
 
#endif