text: /*
   * Copyright (C) 2012, Tomas Davidovic (http://www.davidovic.cz)
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom
   * the Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * 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.
   *
   * (The above is MIT License: http://en.wikipedia.org/wiki/MIT_License)
   */
  
  #ifndef __RENDERER_HXX__
  #define __RENDERER_HXX__
  
  #include <vector>
  #include <cmath>
  #include "scene.hxx"
  #include "framebuffer.hxx"
  
  class AbstractRenderer {
    public:
    AbstractRenderer(const Scene& aScene)
                    :
                    mScene(aScene) {
      mMinPathLength = 0;
      mMaxPathLength = 2;
      mIterations = 0;
      mFramebuffer.Setup(aScene.mCamera.mResolution);
    }
    virtual ~AbstractRenderer(){}
  
    virtual void RunIteration(int aIteration) = 0;
  
    void GetFramebuffer(Framebuffer& oFramebuffer,bool Scaled){
       oFramebuffer = mFramebuffer;
       if((Scaled==true) && (mIterations > 0))
         oFramebuffer.Scale(1.f / mIterations);
    }
    //! Whether this renderer was used at all
    bool WasUsed() const {
      return mIterations > 0;
    }
  
    public:
    uint         mMaxPathLength;
    uint         mMinPathLength;
  
    protected:
    int          mIterations;
    Framebuffer  mFramebuffer;
    const Scene & mScene;
  };
  
  #endif //__RENDERER_HXX__
  