DtSplashParticle.h

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/*****************************************************************************
* Copyright (c) 2021 MAK Technologies, Inc.
* All rights reserved.
*****************************************************************************/

#pragma once


#include <vrvPostProcessor/vrvPostProcessor.h>
#include <vrvPostProcessor/DtGridCell.h>
#include <vrvPostProcessor/DtDropParticle.h>
#include <vrvPostProcessor/DtWaterOnScreenDefines.h>
#include <vrvPostProcessor/DtSplashPrecompute.h>

#include <vrvMath/DtVector4.h>

namespace osg
{
   class Image;
}

namespace makVrv
{ 
   // Basically a static drop with no physics whatsoever.
   class DtSplashParticle : public DtDropParticle
   {
   public:
      DtSplashParticle(float px, float py, float pMass, double time,
         DtGridCell grid[][GRID_DIMENSION],
         float pIntensity);

      virtual ~DtSplashParticle();
   private:
      DtSplashParticle() = delete;

      DtSplashParticle(const DtSplashParticle&) = delete;

      DtSplashParticle& operator=(const DtSplashParticle&) = delete;
   public:

      virtual void update(double time, double elapsedTime,
         DtGridCell grid[][GRID_DIMENSION],
         bool& destroyFlag);

      virtual int type() const override;

      virtual float intensity(void) const override;
   public:
      // ! \brief Precompute a normal map for a drop
      static void precomputeSplashNormalsIfNeeded();
   protected:
      float myIntensity;
   protected:
      static DtVector4<unsigned int> thePrecomputedSplashNormals[PRECOMPUTED_DIM][PRECOMPUTED_DIM];
      static bool theSplashNormalsPrecomputed;
   };

}