ossimOrthoGraphicProjection.h

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//*******************************************************************
//
// License:  See top level LICENSE.txt file.
// 
// Author:  Garrett Potts (gpotts@imagelinks.com)
//
// Description:
//
// Calls Geotrans OrthoGraphic  projection code.  
//*******************************************************************
//  $Id: ossimOrthoGraphicProjection.h 9968 2006-11-29 14:01:53Z gpotts $

#ifndef ossimOrthoGraphicProjection_HEADER
#define ossimOrthoGraphicProjection_HEADER

#include <ossim/projection/ossimMapProjection.h>

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

   double getFalseEasting()const{return  Orth_False_Easting;}
   double getFalseNorthing()const{return Orth_False_Northing;}

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

   virtual bool loadState(const ossimKeywordlist& kwl,
                          const char* prefix=0);
   
private:
   
   //___________________GEOTRANS_______________________
   mutable double Orth_a;                      /* Semi-major axis of ellipsoid in meters */
   mutable double Orth_f;              /* Flattening of ellipsoid */
   mutable double es2;             /* Eccentricity (0.08181919084262188000) squared         */
   mutable double es4;              /* es2 * es2 */
   mutable double es6;              /* es4 * es2 */
   mutable double Ra;                    /* Spherical Radius */
   
/* Orthographic projection Parameters */
   mutable double Orth_Origin_Lat;                   /* Latitude of origin in radians     */
   mutable double Orth_Origin_Long;                  /* Longitude of origin in radians    */
   mutable double Orth_False_Easting;
   mutable double Orth_False_Northing;
   mutable double Sin_Orth_Origin_Lat;               /* sin(Orth_Origin_Lat) */
   mutable double Cos_Orth_Origin_Lat;               /* cos(Orth_Origin_Lat) */
   
  long Set_Orthographic_Parameters(double a,
                                   double f,
                                   double Origin_Latitude,
                                   double Central_Meridian,
                                   double False_Easting,
                                   double False_Northing);



  void Get_Orthographic_Parameters(double *a,
                                   double *f,
                                   double *Origin_Latitude,
                                   double *Origin_Longitude,
                                   double *False_Easting,
                                   double *False_Northing)const;



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


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

TYPE_DATA
};

#endif