DtWaterOnScreenEffect.h

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/*****************************************************************************
* Copyright (c) 2020 MAK Technologies, Inc.
* All rights reserved.
*****************************************************************************/

#pragma once


#include <vrvPostProcessor/vrvPostProcessor.h>

#include <vrvPostProcessor/DtPostProcessor.h>
#include <vrvPostProcessor/DtGridCell.h>
#include <vrvPostProcessor/DtWaterOnScreenDefines.h>
#include <vrvPostProcessor/DtWaterOnScreenDrawable.h>

#include <vrvUtil/DtSignalConnectionManager.h>

#include <osg/Texture2D>
#include <osg/Image>

namespace makVrv
{
   class DtDropParticle;
   class DtRaindropParticle;
   class DtSplashParticle;
   class DtWindow;
   class DtObserverObject;

   class DT_DLL_VRVPOSTPROCESSOR DtWaterOnScreen : public DtPostProcessor
   {
   public:
      DtWaterOnScreen(DtDe& de, const std::string& postProcessType, bool handles2D);

      virtual ~DtWaterOnScreen();
   private:
      DtWaterOnScreen();

      DtWaterOnScreen(const DtWaterOnScreen&);

      DtWaterOnScreen& operator=(const DtWaterOnScreen&);
   public:
      virtual void activateRaindrops(bool on);

      virtual void activateSplashes(bool on);

      virtual void activateSpray(bool on);

      virtual void setIsUnderwater(bool underwater);

      virtual void addRainDrop(float x, float y, float radius);

      virtual void addOceanSplash(float intensity);

      virtual void setSplashIntensity(float intensity);

      virtual void setSprayIntensity(float intensity);

      virtual bool update(DtChannel *channel);

      virtual int numActiveDrops() const;

      virtual void setWaterOnScreenSize(double size);

      virtual void addSplashEffects(const DtObserverObject *observer, bool hasWaveSplashEffect);

      virtual void addSprayEffects(const DtObserverObject *observer, bool hasOceanSprayEffect);
   public:
      static double waterOnScreenSize();

   protected:
      virtual void initialize();

      virtual void clearNormalMap();

      virtual void updateAndDrawDrops(double elapsedTime);

      virtual void addRaindrops(double time, float heading, float observerVelocity);

      virtual void addSpray(double time, float heading);

      virtual void clearDrops();

      virtual void reset();

      virtual void setActiveStatus();

      virtual void slot_windowRemoved(DtWindow* window);

      virtual void slot_waterOnScreenSizeChanged(double value);
   protected:

      osg::ref_ptr<osg::Texture2D> myNormalMap;
      osg::ref_ptr<osg::Image> myNormalImage;
      DtDe& myDe;

      double myLastUpdateTime;
      double myLastDropEmissionTime, myLastSprayEmissionTime;

      bool myRaindropsActiveFlag, mySplashesActiveFlag, mySprayActiveFlag;
      bool myActiveFlag, myUnderwaterFlag;

      float mySplashIntensity, mySprayIntensity;

      int myNumActiveDrops;

      static double myWaterOnScreenSize;

      DtGridCell myGrid[GRID_DIMENSION][GRID_DIMENSION];

      unsigned char myNormalMapClearData[TEXSIZE*TEXSIZE * 4];
      bool myNormalMapClearDataInitialized;
      unsigned char myNormalImageData[TEXSIZE*TEXSIZE * 4];

      DtSignalConnectionManager mySignals;

      osg::ref_ptr<DtWaterOnScreenDrawable> myWaterOnScreenDrawable;
   };

   // 
   // Creator
   //

   class DT_DLL_VRVPOSTPROCESSOR DtWaterOnScreenCreator
      : public DtPostProcessorCreator
   {
   public:
      friend class DtPostProcessManager;

      DtWaterOnScreenCreator();

      virtual ~DtWaterOnScreenCreator();

   protected:
      virtual DtPostProcessor* create(DtDe& de, const std::string& postProcessType);
   };
}