/usr/include/ossim/projection/ossimObliqueMercatorProjection.h is in libossim-dev 1.7.21-4.
This file is owned by root:root, with mode 0o644.
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//
// License: See top level LICENSE.txt file.
//
// Author: Garrett Potts (gpotts@imagelinks.com)
//
// Description:
//
//*******************************************************************
// $Id: ossimObliqueMercatorProjection.h 9968 2006-11-29 14:01:53Z gpotts $
#ifndef ossimObliqueMercatorProjection_HEADER
#define ossimObliqueMercatorProjection_HEADER
#include <ossim/projection/ossimMapProjection.h>
class ossimObliqueMercatorProjection : public ossimMapProjection
{
public:
ossimObliqueMercatorProjection(const ossimEllipsoid& ellipsoid = ossimEllipsoid(),
const ossimGpt& origin = ossimGpt());
/*!
* Points 1 and 2 lie along the central line.
*/
ossimObliqueMercatorProjection(const ossimEllipsoid& ellipsoid,
const ossimGpt& origin,
const ossimGpt& point1,
const ossimGpt& point2,
double falseEasting,
double falseNorthing,
double scaleFactor);
~ossimObliqueMercatorProjection(){}
virtual ossimObject *dup()const
{
return new ossimObliqueMercatorProjection(*this);
}
virtual ossimGpt inverse(const ossimDpt &eastingNorthing)const;
virtual ossimDpt forward(const ossimGpt &latLon)const;
virtual void update();
/*!
* 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);
void setCentralPoint1(const ossimGpt& point);
void setCentralPoint2(const ossimGpt& point);
void setScaleFactor(double scaleFactor);
void setParameters(const ossimGpt& point1,
const ossimGpt& point2,
double falseEasting,
double falseNorthing,
double scaleFactor);
/*!
* 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 OMerc_False_Easting;}
double getFalseNorthing()const{return OMerc_False_Northing;}
const ossimGpt& getCentralPoint1()const{return theCentralPoint1;}
const ossimGpt& getCentralPoint2()const{return theCentralPoint2;}
double getScaleFactor()const{return OMerc_Scale_Factor;}
/*!
* 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);
protected:
ossimGpt theCentralPoint1;
ossimGpt theCentralPoint2;
//________________________GEOTRANS STUFF_____________________________________
mutable double OMerc_a; /* Semi-major axis of ellipsoid, in meters */
mutable double OMerc_f; /* Flattening of ellipsoid */
mutable double es;
mutable double es_OVER_2;
mutable double OMerc_A;
mutable double OMerc_B;
mutable double OMerc_E;
mutable double OMerc_gamma;
mutable double OMerc_azimuth; /* Azimuth of central line as it crosses origin lat */
mutable double OMerc_Origin_Long; /* Longitude at center of projection */
mutable double cos_gamma;
mutable double sin_gamma;
mutable double sin_azimuth;
mutable double cos_azimuth;
mutable double A_over_B;
mutable double B_over_A;
mutable double OMerc_u; /* Coordinates for center point (uc , vc), vc = 0 */
/* at center lat and lon */
/* Oblique Mercator projection Parameters */
mutable double OMerc_Origin_Lat;/* Latitude of projection center, in radians */
mutable double OMerc_Lat_1; /* Latitude of first point lying on central line */
mutable double OMerc_Lon_1; /* Longitude of first point lying on central line */
mutable double OMerc_Lat_2; /* Latitude of second point lying on central line */
mutable double OMerc_Lon_2; /* Longitude of second point lying on central line */
mutable double OMerc_Scale_Factor; /* Scale factor at projection center */
mutable double OMerc_False_Northing; /* False northing, in meters, at projection center */
mutable double OMerc_False_Easting; /* False easting, in meters, at projection center */
mutable double OMerc_Delta_Northing;
mutable double OMerc_Delta_Easting;
/*!
* The function Set_Oblique_Mercator_Parameters receives the ellipsoid parameters and
* projection parameters as inputs, and sets the corresponding state
* variables. If any errors occur, the error code(s) are returned by the function,
* otherwise OMERC_NO_ERROR is returned.
*
* a : Semi-major axis of ellipsoid, in meters (input)
* f : Flattening of ellipsoid (input)
* Origin_Latitude : Latitude, in radians, at which the (input)
* point scale factor is 1.0
* Latitude_1 : Latitude, in radians, of first point lying on
* central line (input)
* Longitude_1 : Longitude, in radians, of first point lying on
* central line (input)
* Latitude_2 : Latitude, in radians, of second point lying on
* central line (input)
* Longitude_2 : Longitude, in radians, of second point lying on
* central line (input)
* False_Easting : A coordinate value, in meters, assigned to the
* central meridian of the projection (input)
* False_Northing : A coordinate value, in meters, assigned to the
* origin latitude of the projection (input)
* Scale_Factor : Multiplier which reduces distances in the
* projection to the actual distance on the
* ellipsoid (input)
*/
long Set_Oblique_Mercator_Parameters(double a,
double f,
double Origin_Latitude,
double Latitude_1,
double Longitude_1,
double Latitude_2,
double Longitude_2,
double False_Easting,
double False_Northing,
double Scale_Factor);
/*!
* The function Get_Oblique_Mercator_Parameters returns the current ellipsoid
* parameters and Oblique Mercator projection parameters.
*
* a : Semi-major axis of ellipsoid, in meters (output)
* f : Flattening of ellipsoid (output)
* Origin_Latitude : Latitude, in radians, at which the (output)
* point scale factor is 1.0
* Latitude_1 : Latitude, in radians, of first point lying on
* central line (output)
* Longitude_1 : Longitude, in radians, of first point lying on
* central line (output)
* Latitude_2 : Latitude, in radians, of second point lying on
* central line (output)
* Longitude_2 : Longitude, in radians, of second point lying on
* central line (output)
* 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)
* Scale_Factor : Multiplier which reduces distances in the
* projection to the actual distance on the
* ellipsoid (output)
*/
void Get_Oblique_Mercator_Parameters(double *a,
double *f,
double *Origin_Latitude,
double *Latitude_1,
double *Longitude_1,
double *Latitude_2,
double *Longitude_2,
double *False_Easting,
double *False_Northing,
double *Scale_Factor)const;
/*!
* The function Convert_Geodetic_To_Oblique_Mercator converts geodetic (latitude and
* longitude) coordinates to Oblique Mercator projection (easting and
* northing) coordinates, according to the current ellipsoid and Oblique Mercator
* projection parameters. If any errors occur, the error code(s) are returned
* by the function, otherwise OMERC_NO_ERROR is returned.
*
* Latitude : Latitude (phi), in radians (input)
* Longitude : Longitude (lambda), in radians (input)
* Easting : Easting (X), in meters (output)
* Northing : Northing (Y), in meters (output)
*/
long Convert_Geodetic_To_Oblique_Mercator(double Latitude,
double Longitude,
double *Easting,
double *Northing)const;
/*!
* The function Convert_Oblique_Mercator_To_Geodetic converts Oblique Mercator projection
* (easting and northing) coordinates to geodetic (latitude and longitude)
* coordinates, according to the current ellipsoid and Oblique Mercator projection
* coordinates. If any errors occur, the error code(s) are returned by the
* function, otherwise OMERC_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_Oblique_Mercator_To_Geodetic(double Easting,
double Northing,
double *Latitude,
double *Longitude)const;
TYPE_DATA
};
#endif
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