source: GTP/branches/IllumWPdeliver2008dec/IlluminationWP/precompiled/include/OgreIllumModule/RenderingRuns/OgreFocusingMapRenderingRun.h @ 3255

#pragma once

//disable inheritance warning caused by multiple inheritance
#if _WIN32
#if _MSC_VER
#pragma warning(disable: 4250)
#endif
#endif

#include "OgreRenderingRun.h"
#include "OgreSharedRuns.h"


/**
        @brief FocusingMapRenderingRun.

        A run to help focusing light projections for shadow mapping.
*/
class __declspec( dllexport ) OgreFocusingMapRenderingRun : public OgreRenderingRun                                                                     
{       
public:

        /**
                @brief Constructor.
                @param name                             the name of the focusing map texture to be created
                @param lightMatrix      the light matrix to be focused
                @param focusingMapSize  size of the focusing map                
        */      
        OgreFocusingMapRenderingRun(String name,
                                                                Matrix4 lightMatrix,
                                                                unsigned int focusingMapSize);

        virtual ~OgreFocusingMapRenderingRun(){}
        /**
                @brief returns the name of the focusing texture
        */
        String getFocusingTextureName(){return name;}
        /**
                @brief gets the boundig box min-max points

                These values are given in light space and can be used to adjust the light matrices to focuse on important objects only.
        */
        void getMinMax(Vector3& min, Vector3& max);
        /**
                @brief Sets the light matrix that should be  focused.
        */
        void setLightMatrix(Matrix4 &m){this->lightMatrix = m;}
        /**
                @brief Sets the player camera matrices.         
        */
        void setCameraMatrices(const Matrix4 &view, const Matrix4 &projection);

        void freeAllResources();
        
protected:
        /**
                @brief light matrix to be focused       
        */
        Matrix4 lightMatrix;
        /**
                @brief fosusing map camera      
        */
        Camera* camera;
        
        /**
                @brief the name of the focusing texture that was created by this run
        */
        String name;
        /**
                @brief a pointer to the focusing texture that was created by this run
        */
        Texture* focusingTexture;
        /**
                @brief the size of the focusing map
        */
        unsigned int focusingMapSize;

        //inherited
        void updateFrame(unsigned long frameNum);       
        /**
                @brief creates the focusing map texture
        */
        inline void createFocusingMap();
        //inherited
        bool needUpdate(unsigned long frameNum )
        {
                return true;
        }

};