ossimMollweidProjection.h

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//*******************************************************************
//
// License:  See top level LICENSE.txt file.
// 
// Author:  Garrett Potts (gpotts@imagelinks.com)
//
// Description:
//
// Calls Geotrans Mollweid projection code.  
//*******************************************************************
//  $Id: ossimMollweidProjection.h 17815 2010-08-03 13:23:14Z dburken $

#ifndef ossimMollweidProojection_HEADER
#define ossimMollweidProojection_HEADER

#include <ossim/projection/ossimMapProjection.h>

class OSSIMDLLEXPORT ossimMollweidProjection : public ossimMapProjection
{
public:   
   ossimMollweidProjection(const ossimEllipsoid& ellipsoid = ossimEllipsoid(),
                           const ossimGpt& origin = ossimGpt());
   ossimMollweidProjection(const ossimEllipsoid& ellipsoid,
                           const ossimGpt& origin,
                           const double falseEasting,
                           const double falseNorthing);
   
   ~ossimMollweidProjection(){}
   
   virtual ossimObject *dup()const{return new ossimMollweidProjection(*this);}

   virtual ossimGpt inverse(const ossimDpt &eastingNorthing)const;
   virtual ossimDpt forward(const ossimGpt &latLon)const;
   virtual void update();   

   void setFalseEasting(double falseEasting);

   void setFalseNorthing(double falseNorthing);

   void setFalseEastingNorthing(double falseEasting, double falseNorthing);

   void setDefaults();

   void setCentralMeridian(double centralMeridian);

   double getFalseEasting()const{return Moll_False_Easting;}
   double getFalseNorthing()const{return Moll_False_Northing;}

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

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

private:

   //__________________GEOTRANS______________________
   mutable double Moll_a;                /* Semi-major axis of ellipsoid in meters */
   mutable double Moll_f;        /* Flattening of ellipsoid */
   mutable double es2;       /* Eccentricity (0.08181919084262188000) squared         */
   mutable double es4;        /* es2 * es2  */
   mutable double es6;        /* es4 * es2  */
   mutable double Sqrt2_Ra;        /* sqrt(2.0) * Spherical Radius(6371007.1810824) */
   mutable double Sqrt8_Ra;        /* sqrt(8.0) * Spherical Radius(6371007.1810824) */
   
/* Mollweide projection Parameters */
   mutable double Moll_Origin_Long;            /* Longitude of origin in radians    */
   mutable double Moll_False_Easting;
   mutable double Moll_False_Northing;
   mutable double Moll_Delta_Northing;
   mutable double Moll_Max_Easting;
   mutable double Moll_Min_Easting;

  long Set_Mollweide_Parameters(double a,
                                double f,
                                double Central_Meridian,
                                double False_Easting,
                                double False_Northing);


  void Get_Mollweide_Parameters(double *a,
                                double *f,
                                double *Central_Meridian,
                                double *False_Easting,
                                double *False_Northing)const;


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


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

TYPE_DATA
};

#endif