ossimTiling.h

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//*******************************************************************
// Copyright (C) 2004 Garrett Potts
//
// License:  MIT
// 
// See LICENSE.txt file in the top level directory for more details.
//
// Author: Garrett Potts
// 
// Description: implementation for image generator
//
//*************************************************************************
// $Id: ossimTiling.h 20103 2011-09-17 16:10:42Z dburken $
#ifndef ossimTiling_HEADER
#define ossimTiling_HEADER
#include <ossim/base/ossimObject.h>
#include <ossim/base/ossimDpt.h>
#include <ossim/base/ossimDrect.h>
#include <ossim/base/ossimIrect.h>
#include <ossim/base/ossimKeywordlist.h>
#include <ossim/projection/ossimMapProjection.h>
#include <ossim/base/ossimRefPtr.h>

class OSSIM_DLL ossimTiling : public ossimObject
{
public:

   enum ossimTilingDeltaType
   {
      ossimTilingDeltaType_TOTAL_PIXELS,
      ossimTilingDeltaType_PER_PIXEL
   };

   ossimTiling();

   bool initialize(const ossimMapProjection& proj,
                   const ossimIrect& boundingRect);

   bool next(ossimRefPtr<ossimMapProjection>& resultProjection,
             ossimIrect& resultingBounds,
             ossimString& resultingName)const;
   
   void reset();
   
   void setTilingDistance(const ossimDpt& tilingDistance,
                          ossimUnitType unitType);

   void setDelta(const ossimDpt& delta,
                 ossimTilingDeltaType deltaType);

   void setTileNameMask(const ossimString& mask);
   ossimString getTileNameMask()const;
   
   bool getRowCol(ossim_int64& row,
                  ossim_int64& col,
                  ossim_int64 tileId)const;
   bool getOrigin(ossimDpt& origin,
                  ossim_int64 tileId)const;
   bool getOrigin(ossimDpt& origin,
                  ossim_int64 row,
                  ossim_int64 col)const;
   
   void setPaddingSizeInPixels(const ossimIpt& pizelOverlap);
   ossimDpt getDeltaPerPixel()const;
   
   virtual bool saveState(ossimKeywordlist& kwl,
                          const char* prefix=0)const;
   virtual bool loadState(const ossimKeywordlist& kwl,
                          const char* prefix=0);

   virtual std::ostream& print(std::ostream& out) const;

protected:

   void getConvertedTilingDistance(ossimDpt& pt) const;

   ossimDpt             theTilingDistance;

   ossimUnitType        theTilingDistanceUnitType;

   ossimDpt             theDelta;

   ossimTilingDeltaType theDeltaType;

   ossim_int64 theOutputSizeInBytes;

   ossim_uint32 theNumberOfBands;

   ossim_uint32 theNumberOfBytesPerPixelPerBand;
   
   ossimDpt             thePaddingSizeInPixels;
   mutable ossimRefPtr<ossimMapProjection>  theMapProjection;
   ossimIrect                       theImageRect;
   ossimDrect                       theTilingRect;
   mutable ossim_int64 theTileId;
   ossim_int64         theTotalHorizontalTiles;
   ossim_int64         theTotalVerticalTiles;
   ossim_int64         theTotalTiles;
   ossimString         theTileNameMask;

   bool theEdgeToEdgeFlag; 
   
   bool validate()const;
   bool isAngularUnit(ossimUnitType unitType)const;
   bool isLinearUnit(ossimUnitType unitType)const;
   void getTileName(ossimString& resultingName,
                    ossim_int64 row,
                    ossim_int64 col,
                    ossim_int64 id)const;
   void clampGeographic(ossimDrect& rect)const;
                    
TYPE_DATA
};

#endif