/usr/include/ossim/projection/ossimStereographicProjection.h is in libossim-dev 2.2.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// License: See top level LICENSE.txt file.
//
// Author: Garrett Potts (gpotts@imagelinks.com)
//
// Description:
//
//*******************************************************************
// $Id: ossimStereographicProjection.h 17815 2010-08-03 13:23:14Z dburken $
#ifndef ossimStereographicProjection_HEADER
#define ossimStereographicProjection_HEADER
#include <ossim/projection/ossimMapProjection.h>
class OSSIMDLLEXPORT ossimStereographicProjection : public ossimMapProjection
{
public:
ossimStereographicProjection(const ossimEllipsoid& ellipsoid = ossimEllipsoid(),
const ossimGpt& origin = ossimGpt());
ossimStereographicProjection(const ossimEllipsoid& ellipsoid,
const ossimGpt& origin,
const double falseEasting,
const double falseNorthing);
~ossimStereographicProjection(){}
virtual ossimObject *dup()const
{
return new ossimStereographicProjection(*this);
}
virtual void update();
virtual ossimGpt inverse(const ossimDpt &eastingNorthing)const;
virtual ossimDpt forward(const ossimGpt &latLon)const;
/*!
* SetFalseEasting. The value is in meters.
* Update is then called so we can pre-compute paramters
*/
void setFalseEasting(double falseEasting);
/*!
* SetFalseNorthing. The value is in meters.
* Update is then called so we can pre-compute paramters
*/
void setFalseNorthing(double falseNorthing);
/*!
* Sets both false easting and northing values. The values are
* expected to be in meters.
* Update is then called so we can pre-compute paramters
*/
void setFalseEastingNorthing(double falseEasting, double falseNorthing);
void setDefaults();
double getFalseEasting()const{return Stereo_False_Easting;}
double getFalseNorthing()const{return Stereo_False_Northing;}
/*!
* Method to save the state of an object to a keyword list.
* Return true if ok or false on error.
*/
virtual bool saveState(ossimKeywordlist& kwl,
const char* prefix=0)const;
/*!
* Method to the load (recreate) the state of an object from a keyword
* list. Return true if ok or false on error.
*/
virtual bool loadState(const ossimKeywordlist& kwl,
const char* prefix=0);
private:
/************************************************************************/
/* GLOBAL DECLARATIONS
*
*/
/* Ellipsoid Parameters, default to WGS 84 */
mutable double Stereo_a; /* Semi-major axis of ellipsoid, in meters */
mutable double Stereo_f; /* Flattening of ellipsoid */
mutable double Stereo_Ra; /* Spherical Radius */
mutable double Two_Stereo_Ra; /* 2 * Spherical Radius */
mutable long Stereo_At_Pole; /* Flag variable */
/* Stereographic projection Parameters */
mutable double Stereo_Origin_Lat; /* Latitude of origin, in radians */
mutable double Stereo_Origin_Long; /* Longitude of origin, in radians */
mutable double Stereo_False_Easting; /* False easting, in meters */
mutable double Stereo_False_Northing; /* False northing, in meters */
mutable double Sin_Stereo_Origin_Lat; /* sin(Stereo_Origin_Lat) */
mutable double Cos_Stereo_Origin_Lat; /* cos(Stereo_Origin_Lat) */
/* Maximum variance for easting and northing values for WGS 84. */
mutable double Stereo_Delta_Easting;
mutable double Stereo_Delta_Northing;
/*!
* The function Set_Stereographic_Parameters receives the ellipsoid
* parameters and Stereograpic projection parameters as inputs, and
* sets the corresponding state variables. If any errors occur, error
* code(s) are returned by the function, otherwise STEREO_NO_ERROR is returned.
*
* a : Semi-major axis of ellipsoid, in meters (input)
* f : Flattening of ellipsoid (input)
* Origin_Latitude : Latitude, in radians, at the center of (input)
* the projection
* Central_Meridian : Longitude, in radians, at the center of (input)
* the projection
* False_Easting : Easting (X) at center of projection, in meters (input)
* False_Northing : Northing (Y) at center of projection, in meters (input)
*/
long Set_Stereographic_Parameters (double a,
double f,
double Origin_Latitude,
double Central_Meridian,
double False_Easting,
double False_Northing);
/*!
* The function Get_Stereographic_Parameters returns the current ellipsoid
* parameters and Stereographic projection parameters.
*
* a : Semi-major axis of ellipsoid, in meters (output)
* f : Flattening of ellipsoid (output)
* Origin_Latitude : Latitude, in radians, at the center of (output)
* the projection
* Central_Meridian : Longitude, in radians, at the center of (output)
* the projection
* False_Easting : A coordinate value, in meters, assigned to the
* central meridian of the projection. (output)
* False_Northing : A coordinate value, in meters, assigned to the
* origin latitude of the projection (output)
*/
void Get_Stereographic_Parameters(double *a,
double *f,
double *Origin_Latitude,
double *Central_Meridian,
double *False_Easting,
double *False_Northing)const;
/*!
* The function Convert_Geodetic_To_Stereographic converts geodetic
* coordinates (latitude and longitude) to Stereographic coordinates
* (easting and northing), according to the current ellipsoid
* and Stereographic projection parameters. If any errors occur, error
* code(s) are returned by the function, otherwise STEREO_NO_ERROR is returned.
*
* Latitude : Latitude, in radians (input)
* Longitude : Longitude, in radians (input)
* Easting : Easting (X), in meters (output)
* Northing : Northing (Y), in meters (output)
*/
long Convert_Geodetic_To_Stereographic (double Latitude,
double Longitude,
double *Easting,
double *Northing)const;
/*!
* The function Convert_Stereographic_To_Geodetic converts Stereographic projection
* (easting and northing) coordinates to geodetic (latitude and longitude)
* coordinates, according to the current ellipsoid and Stereographic projection
* coordinates. If any errors occur, the error code(s) are returned by the
* function, otherwise STEREO_NO_ERROR is returned.
*
* Easting : Easting (X), in meters (input)
* Northing : Northing (Y), in meters (input)
* Latitude : Latitude (phi), in radians (output)
* Longitude : Longitude (lambda), in radians (output)
*/
long Convert_Stereographic_To_Geodetic(double Easting,
double Northing,
double *Latitude,
double *Longitude)const;
TYPE_DATA
};
#endif
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