DtDropParticle.h

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

#pragma once


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

#include <vrvGraphicsUtils/DtVector2.h>
#include <vrvGraphicsUtils/DtVector3.h>
#include <vrvGraphicsUtils/DtVector4.h>

#include <vector>

namespace makVrv
{
   class DtDropParticle
   {
   public:
      DtDropParticle(float px, float py, float pMass, double time,
         DtGridCell grid[][GRID_DIMENSION]);

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

      DtDropParticle(const DtDropParticle&) = delete;

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

      virtual void setParent(DtDropParticle *drop);
      virtual DtDropParticle *parent() const;

      virtual float mass() const;
      virtual void setMass(float m);

      virtual const Vector2_32& velocity() const;

      virtual void affectedCells(std::vector< DtVector2<short> >& cells) const;

      virtual void computeRadius(double waterOnScreenSize);

      virtual void update(double time, double elapsedTime,
         DtGridCell grid[][GRID_DIMENSION],
         bool& destroyFlag) = 0;

      virtual void gridPosition(int& gx, int& gy) const;

      virtual bool mergeable() const;

      virtual float x() const;

      virtual float y() const;

      virtual float radius() const;

      virtual int type() const;

      virtual float intensity(void) const;
   public:
      static void precomputeDropletNormalsIfNeeded();

      static const void* precomputedDropletNormalsDataPointer(void);

   protected:

      float myX, myY, myRadius, myMass, myV0;

      double myT0;
      float myAcceleration;
      DtDropParticle *myParent;

      Vector2_32 myDirection, myVelocity;
      int myLastGridX, myLastGridY;

      bool myMergeable;

   protected:
      static DtVector4<unsigned int> thePrecomputedDropletNormals[PRECOMPUTED_DIM][PRECOMPUTED_DIM];

      static bool myDropletInitialized;
   };

}