DtParticleRotorWashUpdater.h

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/******************************************************************************
** Copyright (c) 2020 VT MAK
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvCore/DtRotorWashUpdater.h>
#include <vrvCore/DtRotorWashTrailPoints.h>
#include <vrvOsg/DtOsgRotorWashModel.h>
#include <vrvOsg/DtSceneRoot.h>
#include <vrvFx/vrvFx.h>

#include <osg/Vec3d>

namespace makVrv
{
   class DtDe;
   class DtModel;
   class DtOsgIntersector;
   class DtParticleRotorWashModelInstance;
   class DtSimpleIntersector;

   class DT_DLL_VRVFX DtParticleRotorWashUpdater : public DtRotorWashUpdater
   {
   public:
      DtParticleRotorWashUpdater( DtDe& de, DtUniqueID id );

      virtual ~DtParticleRotorWashUpdater();

   private:
       DtParticleRotorWashUpdater(const DtParticleRotorWashUpdater &other);
       DtParticleRotorWashUpdater &operator=(const DtParticleRotorWashUpdater &other);

   public:

      virtual void update(DtTime tNow);

      void calcRotorWashLagPos(DtOsgRotorWashModel* rwModel, const DtTime& tNow,
         const DtVector& currentHeliPos, DtVector& outOffsetPos,
         double& lagHeliAngleDistToGround);

   protected:

      virtual DtOsgRotorWashModel* rotorWashModel(); 

      virtual DtVector calcRotorDownDirection(const DtVector& currentPos,
          const DtTaitBryan& orientation);

      virtual double getHeightAboveTerrain(const DtVector& pos);

      virtual bool getTerrainOrPropIntersection(
          const osg::Vec3d& startPos, const osg::Vec3d& endPos,
          osg::Vec3d& result);

      virtual DtVector getHeliVelocity(DtSceneObject* sceneObj, DtTime tNow);

      DtOsgIntersector* myIntersector;
      DtSimpleIntersector* myHATIntersector;
      DtSceneRootList myRoots;
      DtParticleRotorWashModelInstance* myLastParticleRotorWashInstance;
      // Keep track of the rotor wash points so we can 'lag' a more the 
      // higher up we go
      DtRotorWashTrailPoints myRotorWashPoints;
   };
}