DataManager.h

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/*
--------------------------------------------------------------------------------
This source file is part of SkyX.
Visit http://www.paradise-studios.net/products/skyx/
 
Copyright (C) 2009-2012 Xavier Verguín González <xavyiy@gmail.com>
 
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.
 
You should have received a copy of the GNU Lesser General Public License along with
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.
--------------------------------------------------------------------------------
*/
 
#ifndef _SkyX_VClouds_DataManager_H_
#define _SkyX_VClouds_DataManager_H_
 
#include "Prerequisites.h"
 
#include "FastFakeRandom.h"
 
namespace SkyX { namespace VClouds{
 
    class VClouds;
    class Ellipsoid;
 
    class DataManager 
    {
    public:
        struct Cell
        {
            bool hum, act, cld;
 
            float phum, pext, pact;
 
            float dens;
 
            float light;
        };
 
        enum VolTextureId
        {
            VOL_TEX0 = 0,
            VOL_TEX1 = 1
        };
 
        DataManager(VClouds *vc);
 
        ~DataManager();
 
        void create(const int& nx, const int& ny, const int& nz);
 
        void update(const Ogre::Real &timeSinceLastFrame);
 
        void remove();
 
        inline const bool& isCreated() const
        {
            return mCreated;
        }
 
        inline void setUpdateTime(const float& UpdateTime)
        {
            mUpdateTime = UpdateTime;
        }
 
        inline const Ogre::Real& getUpdateTime() const
        {
            return mUpdateTime;
        }
 
        inline const Ogre::Real _getInterpolation() const
        {
            return mCurrentTransition/mUpdateTime;
        }
 
        void setWheater(const float& Humidity, const float& AverageCloudsSize, const bool& delayedResponse = true);
 
        void addEllipsoid(Ellipsoid *e, const bool& UpdateProbabilities = true);
 
        void forceToUpdateData();
 
    private:
 
        void _initData(const int& nx, const int& ny, const int& nz);
 
        Cell *** _create3DCellArray(const int& nx, const int& ny, const int& nz, const bool& init = true);
 
        void _delete3DCellArray(Cell ***c, const int& nx, const int& ny);
 
        void _copy3DCellArraysData(Cell ***src, Cell ***dest, const int& nx, const int& ny, const int& nz);
 
        void _performCalculations(const int& nx, const int& ny, const int& nz, const int& step, const int& xStart, const int& xEnd);
 
        void _updateVolTextureData(Cell ***c, const VolTextureId& TexId, const int& nx, const int& ny, const int& nz);
 
        const float _getDensityAt(Cell ***c, const int& nx, const int& ny, const int& nz, const int& x, const int& y, const int& z, const int& r, const float& strength) const;
 
        const float _getDensityAt(Cell ***c, const int& x, const int& y, const int& z) const;
 
        const bool _fact(Cell ***c, const int& nx, const int& ny, const int& nz, const int& x, const int& y, const int& z) const;
 
        void _clearProbabilities(Cell*** c, const int& nx, const int& ny, const int& nz, const bool& clearData);
 
        void _updateProbabilities(Cell*** c, const int& nx, const int& ny, const int& nz, const bool& delayedResponse);
 
        const Ogre::Real _getLightAbsorcionAt(Cell*** c, const int& nx, const int& ny, const int& nz, const int& x, const int& y, const int& z, const Ogre::Vector3& d, const float& att) const;
 
        void _createVolTexture(const VolTextureId& TexId, const int& nx, const int& ny, const int& nz);
 
        Cell ***mCellsCurrent,
             ***mCellsTmp;
 
        float mCurrentTransition;
        float mUpdateTime;
        int mStep, mXStart, mXEnd;
 
        int mNx, mNy, mNz;
 
        Ogre::TexturePtr mVolTextures[2];
        bool mVolTexToUpdate;
 
        bool mCreated;
 
        FastFakeRandom *mFFRandom;
 
        int mMaxNumberOfClouds;
        std::vector<Ellipsoid*> mEllipsoids;
 
        VClouds *mVClouds;
    };
 
}}
 
#endif