ossimNewZealandMapGridProjection.h

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//*******************************************************************
//
// License:  See top level LICENSE.txt file.
// 
// Author:  Garrett Potts (gpotts@imagelinks.com)
//
// Description:
//
//*******************************************************************
//  $Id: ossimNewZealandMapGridProjection.h 17815 2010-08-03 13:23:14Z dburken $
#ifndef ossimNewZealandMapGridProjection_HEADER
#define ossimNewZealandMapGridProjection_HEADER

#include <ossim/projection/ossimMapProjection.h>


class OSSIMDLLEXPORT ossimNewZealandMapGridProjection : public ossimMapProjection
{
public:
   ossimNewZealandMapGridProjection();
   ~ossimNewZealandMapGridProjection();
   virtual ossimObject* dup()const
      {
         return new ossimNewZealandMapGridProjection(*this);
      }
   virtual void update();   

   virtual ossimGpt inverse(const ossimDpt &eastingNorthing)const;
   virtual ossimDpt forward(const ossimGpt &latLon)const;
   void setFalseEasting(double falseEasting);

   void setFalseNorthing(double falseNorthing);
  
   void setFalseEastingNorthing(double falseEasting, double falseNorthing);

   void setDefaults();

   double getFalseEasting()const{return  NZMG_False_Easting;}
   double getFalseNorthing()const{return NZMG_False_Northing;}
   
   virtual bool saveState(ossimKeywordlist& kwl,
                          const char* prefix=0)const;

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

   // these should be set to constant values that never change.  The origin
   // will be fixed and the false easting northings will also be fixed.
   //
   mutable double NZMG_Origin_Lat;             /* Latitude of origin, in radians */
   mutable double NZMG_Origin_Long;            /* Longitude of origin, in radians */
   mutable double NZMG_False_Northing;         /* False northing, in meters */
   mutable double NZMG_False_Easting;          /* False easting, in meters */
   mutable double NZMG_a;
/* Maximum variance for easting and northing values for International. */
   mutable double NZMG_Max_Easting;
   mutable double NZMG_Max_Northing;
   mutable double NZMG_Min_Easting;
   mutable double NZMG_Min_Northing;

   long Convert_Geodetic_To_NZMG (double Latitude,
                                  double Longitude,
                                  double *Easting,
                                  double *Northing)const;



   long Convert_NZMG_To_Geodetic(double Easting,
                                 double Northing,
                                 double *Latitude,
                                 double *Longitude)const;
   
TYPE_DATA   
};
#endif