ossimMapProjectionInfo.h

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//*******************************************************************
// Copyright (C) 2001 ImageLinks Inc.
//
// License:  MIT
//
// See LICENSE.txt file in the top level directory for more details.
//
// Author:  David Burken
//
// Description:
// Class for encapsulate projection info given a projection, datum, and
// output rectangle.
//
// NOTE:
// - Output rectangle should be relative to the center of pixels.
//   Shifts will be made for "pixel is area" internally.
//
//*******************************************************************
//  $Id: ossimMapProjectionInfo.h 11959 2007-10-31 19:22:56Z gpotts $

#ifndef ossimMapProjectionInfo_HEADER
#define ossimMapProjectionInfo_HEADER

#include <ossim/base/ossimObject.h>
#include <ossim/base/ossimConstants.h>
#include <ossim/base/ossimGpt.h>
#include <ossim/base/ossimDpt.h>
#include <ossim/base/ossimDrect.h>
#include <ossim/base/ossimString.h>

class ossimMapProjection;
class ossimImageChain;

class OSSIMDLLEXPORT ossimMapProjectionInfo : public ossimObject
{
public:

   ossimMapProjectionInfo(const ossimMapProjection* proj,
                          const ossimDrect& output_rect);

   virtual ~ossimMapProjectionInfo();

   bool errorStatus() const;

   void getGeom(ossimKeywordlist& kwl, const char* prefix=0)const;

   ossimDpt getMetersPerPixel() const;
   
   ossimDpt getUsSurveyFeetPerPixel() const;

   ossimDpt getDecimalDegreesPerPixel() const;
   
   ossimDpt ulEastingNorthingPt() const;

   ossimDpt urEastingNorthingPt() const;

   ossimDpt lrEastingNorthingPt() const;

   ossimDpt llEastingNorthingPt() const;
   
   ossimDpt ulEastingNorthingPtInFt() const;

   ossimDpt urEastingNorthingPtInFt() const;

   ossimDpt lrEastingNorthingPtInFt() const;

   ossimDpt llEastingNorthingPtInFt() const;
   
   ossimGpt ulGroundPt() const;

   ossimGpt urGroundPt() const;

   ossimGpt lrGroundPt() const;
 
   ossimGpt llGroundPt() const;

   ossimGpt centerGroundPt() const;

   ossimDpt centerEastingNorthingPt() const;

   ossim_int32 linesPerImage() const;

   ossim_int32 pixelsPerLine() const;

   std::ostream& print(std::ostream& os) const;

   void setPixelType (ossimPixelType type);

   ossimPixelType  getPixelType () const;

   void setOutputFeetFlag (bool flag);

   bool unitsInFeet() const;

   ossimString getImageInfoString () const;

   void setImageInfoString (const ossimString& string);

   const ossimMapProjection* getProjection() const;

   //****
   // Keywords for getStateFrom/saveStateTo.
   //***
   static const char* README_IMAGE_STRING_KW;
   static const char* PIXEL_TYPE_KW;
   static const char* OUTPUT_US_FT_INFO_KW;
   
   virtual bool loadState(const ossimKeywordlist& kwl,
                          const char* prefix = 0);
   
   virtual bool saveState(ossimKeywordlist& kwl,
                          const char* prefix = 0) const;
   
private:

   // Do not permit construction with void args.
   ossimMapProjectionInfo();
   ossimMapProjectionInfo& operator=(const ossimMapProjectionInfo&);
   
   void initializeMembers(const ossimDrect& output_rect);
   
   const ossimMapProjection* theProjection;
   mutable bool              theErrorStatus;
   int                       theLinesPerImage;
   int                       thePixelsPerLine;
   ossimGpt                  theCornerGroundPt[4];
   ossimDpt                  theCornerEastingNorthingPt[4];
   ossimGpt                  theCenterGroundPt;
   ossimDpt                  theCenterEastingNorthingPt;
   ossimDrect                theBoundingRect;
   
   ossimPixelType                 thePixelType;

   bool                      theOutputInfoInFeetFlag;

   ossimString               theImageInfoString;
};

#endif /* End of #ifndef ossimMapProjectionInfo_HEADER */