ossimLlxyProjection.h

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//*******************************************************************
//
// License:  See top level LICENSE.txt file.
// 
// Author:  David Burken
//
// Description:
//
// Contains class declaration for ossimLlxy.  This is a simple "latitude /
// longitude to x / y" projection.  Note that "origin" and "tie_point" are
// synonymous in this projection.
// 
//*******************************************************************
//  $Id: ossimLlxyProjection.h 19651 2011-05-25 18:49:22Z gpotts $

#ifndef ossimLlxyProjection_HEADER
#define ossimLlxyProjection_HEADER

#include <ossim/projection/ossimMapProjection.h>

class OSSIMDLLEXPORT ossimLlxyProjection : public ossimMapProjection
{
public:
   ossimLlxyProjection();
   ossimLlxyProjection(const ossimLlxyProjection& rhs);
   ossimLlxyProjection(const ossimEllipsoid& ellipsoid,
                       const ossimGpt& origin);
   ossimLlxyProjection(const ossimGpt& origin,
                       double latSpacing,  // decimal degrees
                       double lonSpacing);
   
   virtual ~ossimLlxyProjection();
   
   virtual ossimObject *dup()const;
   
   virtual bool isGeographic()const;
   
   virtual ossimDpt forward(const ossimGpt &worldPoint) const;
   virtual ossimGpt inverse(const ossimDpt &projectedPoint) const;
   
   virtual double getLatSpacing() const;

   virtual double getLonSpacing() const;

   virtual void   setLatSpacing(double spacing);

   virtual void   setLonSpacing(double spacing);

   virtual void worldToLineSample(const ossimGpt& worldPoint,
                                  ossimDpt&       lineSampPt) const;

   virtual void lineSampleToWorld(const ossimDpt& lineSampPt,
                                  ossimGpt&       worldPt) 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;

   virtual bool operator==(const ossimProjection& projection) const;

  //   virtual ossimDpt getMetersPerPixel() const;
   virtual void setMetersPerPixel(const ossimDpt& pt);
   virtual void computeDegreesPerPixel(const ossimGpt& ground,
                                       const ossimDpt& metersPerPixel,
                                       double &deltaLat,
                                       double &deltaLon);

   
   virtual void computeMetersPerPixel(const ossimGpt& center,
                                      double deltaDegreesPerPixelLat,
                                      double deltaDegreesPerPixelLon,
                                      ossimDpt &metersPerPixel);
   
private:

TYPE_DATA
};

#endif