ossimRLevelFilter.h

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//*******************************************************************
//
// License:  MIT
// 
// See LICENSE.txt file in the top level directory for more details.
//
// Author: Garrett Potts
//
//*************************************************************************
// $Id: ossimRLevelFilter.h 17932 2010-08-19 20:34:35Z dburken $
#ifndef ossimRLevelFilter_HEADER
#define ossimRLevelFilter_HEADER

#include <ossim/imaging/ossimImageSourceFilter.h>

class OSSIMDLLEXPORT ossimRLevelFilter : public ossimImageSourceFilter
{
public:

   ossimRLevelFilter();


   virtual void getDecimationFactor(ossim_uint32 resLevel,
                                    ossimDpt& result)const;

   ossimRefPtr<ossimImageGeometry> getImageGeometry();

   virtual void setCurrentRLevel(ossim_uint32 rlevel);

   virtual ossim_uint32 getCurrentRLevel()const;

   virtual bool getOverrideGeometryFlag() const;
   virtual void setOverrideGeometryFlag(bool override);

   virtual ossimIrect getBoundingRect(ossim_uint32 resLevel=0) const;

   virtual ossimRefPtr<ossimImageData> getTile(const ossimIrect& tileRect,
                                               ossim_uint32 resLevel=0);

   virtual bool loadState(const ossimKeywordlist& kwl,
                          const char* prefix=0);

   virtual bool saveState(ossimKeywordlist& kwl,
                          const char* prefix=0)const;
protected:
   virtual ~ossimRLevelFilter();
   
   void getSummedDecimation(ossimDpt& result) const;
   
   void updateGeometry();

   ossim_uint32 theCurrentRLevel;
   bool         theOverrideGeometryFlag;
   ossimRefPtr<ossimImageGeometry> m_ScaledGeometry; 

TYPE_DATA
};

#endif