DtTritonHeightMapManager.h

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/******************************************************************************
** Copyright (c) 2013 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <osg/Camera>
#include <osg/Drawable>
#include <osg/Texture2D>

#include <vrvUtil/DtSignalConnectionManager.h>

namespace makVrv
{
   class DtTritonDrawable;
   class DtDe;

   class DtTritonHeightMapManager
   {
   public:
      DtTritonHeightMapManager( makVrv::DtDe& de, DtTritonDrawable *parentDrawable);

      virtual ~DtTritonHeightMapManager();

      void setupHeightMap( void );

      void setHeightMapResolution(float resolution);

      float getHeightMapResolution() const;

      void setHeightMapTextureSize(int pixels);

      int heightMapTextureSize() const;

      bool updateHeightCamera( unsigned int frameNum, 
         const osg::Vec3& currentPosition, bool isGeocentric );

      void setHeightCameraAttachment(bool enabled);

      const osg::Matrix& getHeightMapMatrix()
      {
         return myHeightMapMatrix;
      }

      const osg::ref_ptr<osg::Texture2D> getHeightMapTexture()
      {
         return myHeightMap;
      }

      void forceUpdate()
      {
         myForceUpdate = true;
      }

   protected:

      void cleanup( );

      osg::Matrixd oglRevDepthOrtho(double left, double right,
         double bottom, double top,
         double zNear, double zFar);

      osg::Vec3 myLastHeightUpdatePos;
      unsigned int myHeightUpdateFrame;
      bool myHeightCameraAttached;
      bool myForceUpdate;
      float myResolution;
      bool mySavedPerfOverlayOn;
      double myLastUpdateTime;

      osg::ref_ptr<osg::Texture2D> myHeightMap, myDepthTexture;
      osg::Matrix myHeightMapMatrix;
      int myHeightMapDimension;
      osg::ref_ptr<osg::Camera> myHeightCamera;

      makVrv::DtDe& myDe;

      DtTritonDrawable *myDrawable;

      DtSignalConnectionManager myConnections;
   };
}