#include <ossimAzimEquDistProjection.h>

Inheritance diagram for ossimAzimEquDistProjection:

Public Member Functions
	ossimAzimEquDistProjection (const ossimEllipsoid &ellipsoid=ossimEllipsoid(), const ossimGpt &origin=ossimGpt())

	ossimAzimEquDistProjection (const ossimEllipsoid &ellipsoid, const ossimGpt &origin, double falseEasting, double falseNorthing)

	ossimAzimEquDistProjection (const ossimAzimEquDistProjection &rhs)

virtual ossimObject *	dup () const

virtual ossimGpt	inverse (const ossimDpt &eastingNorthing) const
	Will take a point in meters and convert it to ground. More...

virtual ossimDpt	forward (const ossimGpt &latLon) const
	All map projections will convert the world coordinate to an easting northing (Meters). More...

virtual void	update ()

double	getFalseEasting () const

double	getFalseNorthing () const

void	setFalseEasting (double falseEasting)

void	setFalseNorthing (double falseNorthing)

void	setFalseEastingNorthing (double falseEasting, double falseNorthing)

void	setDefaults ()

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

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

Public Member Functions inherited from ossimMapProjection
	ossimMapProjection (const ossimEllipsoid &ellipsoid=ossimEllipsoid(), const ossimGpt &origin=ossimGpt())

	ossimMapProjection (const ossimMapProjection &src)

virtual ossimGpt	origin () const

virtual ossimDpt	worldToLineSample (const ossimGpt &worldPoint) const

virtual void	worldToLineSample (const ossimGpt &worldPoint, ossimDpt &lineSample) const

virtual ossimGpt	lineSampleToWorld (const ossimDpt &projectedPoint) const

virtual void	lineSampleToWorld (const ossimDpt &projectedPoint, ossimGpt &gpt) const

virtual void	lineSampleHeightToWorld (const ossimDpt &lineSampPt, const double &heightAboveEllipsoid, ossimGpt &worldPt) const
	This is the pure virtual that projects the image point to the given elevation above ellipsoid, thereby bypassing reference to a DEM. More...

virtual void	lineSampleToEastingNorthing (const ossimDpt &liineSample, ossimDpt &eastingNorthing) const

virtual void	eastingNorthingToLineSample (const ossimDpt &eastingNorthing, ossimDpt &lineSample) const

virtual void	eastingNorthingToWorld (const ossimDpt &eastingNorthing, ossimGpt &worldPt) const

virtual double	getStandardParallel1 () const
	Derived classes should implement as needed. More...

virtual double	getStandardParallel2 () const
	Derived classes should implement as needed. More...

virtual void	setPcsCode (ossim_uint32 pcsCode)

virtual ossim_uint32	getPcsCode () const
	Returns the EPSG PCS code or 32767 if the projection is a custom (non-EPSG) projection. More...

virtual ossimString	getProjectionName () const
	Returns the projection name. More...

virtual double	getA () const
	ACCESS METHODS: More...

virtual double	getB () const

virtual double	getF () const

virtual ossimDpt	getMetersPerPixel () const

virtual const ossimDpt &	getDecimalDegreesPerPixel () const
	Returns decimal degrees per pixel as an ossimDpt with "x" representing longitude and "y" representing latitude. More...

virtual const ossimDpt &	getUlEastingNorthing () const

virtual const ossimGpt &	getUlGpt () const

virtual const ossimDatum *	getDatum () const

const ossimEllipsoid &	getEllipsoid () const

const ossimGpt &	getOrigin () const

virtual bool	isGeographic () const

virtual void	applyScale (const ossimDpt &scale, bool recenterTiePoint)
	Applies scale to theDeltaLonPerPixel, theDeltaLatPerPixel and theMetersPerPixel data members (eg: theDeltaLonPerPixel *= scale.x). More...

virtual void	setEllipsoid (const ossimEllipsoid &ellipsoid)
	SET METHODS: More...

virtual void	setAB (double a, double b)

virtual void	setDatum (const ossimDatum *datum)
	Sets theDatum to datum. More...

virtual void	setOrigin (const ossimGpt &origin)
	Sets theOrigin to origin. More...

virtual void	setMetersPerPixel (const ossimDpt &gsd)

virtual void	setDecimalDegreesPerPixel (const ossimDpt &gsd)

virtual void	setUlTiePoints (const ossimGpt &gpt)

virtual void	setUlTiePoints (const ossimDpt &eastingNorthing)

virtual void	setUlEastingNorthing (const ossimDpt &ulEastingNorthing)

virtual void	setUlGpt (const ossimGpt &ulGpt)

virtual void	assign (const ossimProjection &aProjection)

virtual std::ostream &	print (std::ostream &out) const
	Prints data members to stream. More...

virtual bool	operator== (const ossimProjection &projection) const
	Compares this to arg projection and returns TRUE if the same. More...

virtual void	computeDegreesPerPixel ()
	Computes the approximate resolution in degrees/pixel. More...

virtual void	computeMetersPerPixel ()
	This will go from the ground point and give you an approximate meters per pixel. More...

void	setMatrix (double rotation, const ossimDpt &scale, const ossimDpt &translation)

void	setMatrixScale (const ossimDpt &scale)

void	setMatrixRotation (double rotation)

void	setMatrixTranslation (const ossimDpt &translation)

void	snapTiePointTo (ossim_float64 multiple, ossimUnitType unitType)
	Utility method to snap the tie point to some multiple. More...

void	snapTiePointToOrigin ()

void	setElevationLookupFlag (bool flag)

bool	getElevationLookupFlag () const

ossimUnitType	getModelTransformUnitType () const

void	setModelTransformUnitType (ossimUnitType unit)

bool	hasModelTransform () const

virtual bool	isAffectedByElevation () const
	Implementation of pure virtual ossimProjection::isAffectedByElevation method. More...

void	setProjectionUnits (ossimUnitType units)

ossimUnitType	getProjectionUnits () const
	OSSIM considers all map projection coordinates (including false eastings and northings) to be in meters. More...

virtual bool	isEqualTo (const ossimObject &obj, ossimCompareType compareType=OSSIM_COMPARE_FULL) const

Public Member Functions inherited from ossimProjection
	ossimProjection ()

virtual	~ossimProjection ()

virtual void	getRoundTripError (const ossimDpt &imagePoint, ossimDpt &errorResult) const

virtual void	getRoundTripError (const ossimGpt &groundPoint, ossimDpt &errorResult) const

virtual void	getGroundClipPoints (ossimGeoPolygon &gpts) const

virtual bool	operator!= (const ossimProjection &projection) const

Public Member Functions inherited from ossimObject
	ossimObject ()

virtual	~ossimObject ()

virtual ossimString	getShortName () const

virtual ossimString	getLongName () const

virtual ossimString	getDescription () const

virtual ossimString	getClassName () const

virtual RTTItypeid	getType () const

virtual bool	canCastTo (ossimObject *obj) const

virtual bool	canCastTo (const RTTItypeid &id) const

virtual bool	canCastTo (const ossimString &parentClassName) const

virtual void	accept (ossimVisitor &visitor)

Public Member Functions inherited from ossimReferenced
	ossimReferenced ()

	ossimReferenced (const ossimReferenced &)

ossimReferenced &	operator= (const ossimReferenced &)

void	ref () const
	increment the reference count by one, indicating that this object has another pointer which is referencing it. More...

void	unref () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...

void	unref_nodelete () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...

int	referenceCount () const

Public Member Functions inherited from ossimErrorStatusInterface
	ossimErrorStatusInterface ()

virtual	~ossimErrorStatusInterface ()

virtual ossimErrorCode	getErrorStatus () const

virtual ossimString	getErrorStatusString () const

virtual void	setErrorStatus (ossimErrorCode error_status) const

virtual void	setErrorStatus () const

virtual void	clearErrorStatus () const

bool	hasError () const

Protected Member Functions
virtual	~ossimAzimEquDistProjection ()

long	Set_Azimuthal_Equidistant_Parameters (double a, double f, double Origin_Latitude, double Central_Meridian, double False_Easting, double False_Northing)

void	Get_Azimuthal_Equidistant_Parameters (double a, double f, double Origin_Latitude, double Central_Meridian, double False_Easting, double False_Northing) const

long	Convert_Geodetic_To_Azimuthal_Equidistant (double Latitude, double Longitude, double Easting, double Northing) const

long	Convert_Azimuthal_Equidistant_To_Geodetic (double Easting, double Northing, double Latitude, double Longitude) const

Protected Member Functions inherited from ossimMapProjection
virtual	~ossimMapProjection ()

void	updateFromTransform ()

Protected Member Functions inherited from ossimReferenced
virtual	~ossimReferenced ()

Protected Attributes
double	abs_Azeq_Origin_Lat

double	Azeq_a

double	Azeq_f

double	Ra

double	Sin_Azeq_Origin_Lat

double	Cos_Azeq_Origin_Lat

double	Azeq_Origin_Lat

double	Azeq_Origin_Long

double	Azeq_False_Northing

double	Azeq_False_Easting

double	Azeq_Delta_Northing

double	Azeq_Delta_Easting

Protected Attributes inherited from ossimMapProjection
ossimEllipsoid	theEllipsoid
	This method verifies that the projection parameters match the current pcs code. More...

ossimGpt	theOrigin

const ossimDatum *	theDatum
	This is only set if we want to have built in datum shifting. More...

ossimDpt	theMetersPerPixel
	Holds the number of meters per pixel. More...

ossimDpt	theDegreesPerPixel
	Hold the decimal degrees per pixel. More...

ossimGpt	theUlGpt
	Hold tie point in decimal degrees. More...

ossimDpt	theUlEastingNorthing
	Hold tie point as easting northing. More...

ossimDpt	theFalseEastingNorthing
	Hold the false easting northing. More...

ossim_uint32	thePcsCode
	Projection Coordinate System(PCS) code. More...

bool	theElevationLookupFlag

ossimMatrix4x4	theModelTransform

ossimMatrix4x4	theInverseModelTransform

ossimUnitType	theModelTransformUnitType

ossimUnitType	theProjectionUnits
	Linear units of the projection as indicated in the projection's specification: More...

Protected Attributes inherited from ossimErrorStatusInterface
ossimErrorCode	theErrorStatus

Detailed Description

Definition at line 18 of file ossimAzimEquDistProjection.h.

Constructor & Destructor Documentation

◆ ossimAzimEquDistProjection() [1/3]

ossimAzimEquDistProjection::ossimAzimEquDistProjection	(	const ossimEllipsoid &	ellipsoid = `ossimEllipsoid()`,
		const ossimGpt &	origin = `ossimGpt()`
	)

Definition at line 34 of file ossimAzimEquDistProjection.cpp.

    :ossimMapProjection(ellipsoid,
                        origin)
 {
    setDefaults();
 }

◆ ossimAzimEquDistProjection() [2/3]

ossimAzimEquDistProjection::ossimAzimEquDistProjection	(	const ossimEllipsoid &	ellipsoid,
		const ossimGpt &	origin,
		double	falseEasting,
		double	falseNorthing
	)

Definition at line 42 of file ossimAzimEquDistProjection.cpp.

References setFalseEastingNorthing().

    :ossimMapProjection(ellipsoid,
                        origin)
 {
    setFalseEastingNorthing(falseEasting, falseNorthing);
 }

◆ ossimAzimEquDistProjection() [3/3]

ossimAzimEquDistProjection::ossimAzimEquDistProjection ( const ossimAzimEquDistProjection & rhs )

inline

Definition at line 29 of file ossimAzimEquDistProjection.h.

       {
          *this = rhs;
       }

◆ ~ossimAzimEquDistProjection()

virtual ossimAzimEquDistProjection::~ossimAzimEquDistProjection ( )

inlineprotectedvirtual

Definition at line 85 of file ossimAzimEquDistProjection.h.

85 {}

Member Function Documentation

◆ Convert_Azimuthal_Equidistant_To_Geodetic()

long ossimAzimEquDistProjection::Convert_Azimuthal_Equidistant_To_Geodetic	(	double	Easting,
		double	Northing,
		double *	Latitude,
		double *	Longitude
	)		const

protected

The function Convert_Azimuthal_Equidistant_To_Geodetic converts Azimuthal Equidistant projection (easting and northing) coordinates to geodetic (latitude and longitude) coordinates, according to the current ellipsoid and Azimuthal Equidistant projection coordinates. If any errors occur, the error code(s) are returned by the function, otherwise AZEQ_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)

Definition at line 404 of file ossimAzimEquDistProjection.cpp.

References abs_Azeq_Origin_Lat, Azeq_False_Easting, Azeq_False_Northing, AZEQ_NO_ERROR, Azeq_Origin_Lat, Azeq_Origin_Long, Cos_Azeq_Origin_Lat, M_PI, PI_OVER_2, Ra, and Sin_Azeq_Origin_Lat.

Referenced by inverse().

 { /* Begin Convert_Azimuthal_Equidistant_To_Geodetic */
 /*
  * The function Convert_Azimuthal_Equidistant_To_Geodetic converts Azimuthal_Equidistant projection
  * (easting and northing) coordinates to geodetic (latitude and longitude)
  * coordinates, according to the current ellipsoid and Azimuthal_Equidistant projection
  * coordinates.  If any errors occur, the error code(s) are returned by the
  * function, otherwise AZEQ_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)
  */
 
   double dx, dy;
   double rho;        /* height above ellipsoid */
   double c;          /* angular distance from center */
   double sin_c, cos_c, dy_sinc;
   long Error_Code = AZEQ_NO_ERROR; 
 
 //   if ((Easting < (Azeq_False_Easting - Azeq_Delta_Easting)) 
 //       || (Easting > (Azeq_False_Easting + Azeq_Delta_Easting)))
 //   { /* Easting out of range  */
 //     Error_Code |= AZEQ_EASTING_ERROR;
 //   }
 //   if ((Northing < (Azeq_False_Northing - Azeq_Delta_Northing)) 
 //       || (Northing > (Azeq_False_Northing + Azeq_Delta_Northing)))
 //   { /* Northing out of range */
 //     Error_Code |= AZEQ_NORTHING_ERROR;
 //   }
 
   if (!Error_Code)
   {
     dy = Northing - Azeq_False_Northing;
     dx = Easting - Azeq_False_Easting;
     rho = sqrt(dx * dx + dy * dy);
     if (fabs(rho) <= 1.0e-10)
     {
       *Latitude = Azeq_Origin_Lat;
       *Longitude = Azeq_Origin_Long;
     }
     else
     {
       c = rho / Ra;
       sin_c = sin(c);
       cos_c = cos(c);
       dy_sinc = dy * sin_c;
       *Latitude = asin((cos_c * Sin_Azeq_Origin_Lat) + ((dy_sinc * Cos_Azeq_Origin_Lat) / rho));
       if (fabs(abs_Azeq_Origin_Lat - PI_OVER_2) < 1.0e-10)
       {
         if (Azeq_Origin_Lat >= 0.0)
           *Longitude = Azeq_Origin_Long + atan2(dx, -dy);
         else
           *Longitude = Azeq_Origin_Long + atan2(dx, dy);
       }
       else
         *Longitude = Azeq_Origin_Long + atan2((dx * sin_c), ((rho * Cos_Azeq_Origin_Lat * cos_c) - (dy_sinc * Sin_Azeq_Origin_Lat)));
     }
 
     if (*Latitude > PI_OVER_2)  /* force distorted values to 90, -90 degrees */
       *Latitude = PI_OVER_2;
     else if (*Latitude < -PI_OVER_2)
       *Latitude = -PI_OVER_2;
 
 //     if (*Longitude > M_PI)
 //       *Longitude -= TWO_PI;
 //     if (*Longitude < -M_PI)
 //       *Longitude += TWO_PI;
 
     if (*Longitude > M_PI)  /* force distorted values to 180, -180 degrees */
       *Longitude = M_PI;
     else if (*Longitude < -M_PI)
       *Longitude = -M_PI;
 
   }
   return (Error_Code);
 } /* End Convert_Azimuthal_Equidistant_To_Geodetic */

◆ Convert_Geodetic_To_Azimuthal_Equidistant()

long ossimAzimEquDistProjection::Convert_Geodetic_To_Azimuthal_Equidistant	(	double	Latitude,
		double	Longitude,
		double *	Easting,
		double *	Northing
	)		const

protected

The function Convert_Geodetic_To_Azimuthal_Equidistant converts geodetic (latitude and longitude) coordinates to Azimuthal Equidistant projection (easting and northing) coordinates, according to the current ellipsoid and Azimuthal Equidistant projection parameters. If any errors occur, the error code(s) are returned by the function, otherwise AZEQ_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)

Definition at line 282 of file ossimAzimEquDistProjection.cpp.

References abs_Azeq_Origin_Lat, Azeq_False_Easting, Azeq_False_Northing, AZEQ_NO_ERROR, Azeq_Origin_Lat, Azeq_Origin_Long, AZEQ_PROJECTION_ERROR, Cos_Azeq_Origin_Lat, M_PI, PI_OVER_2, Ra, Sin_Azeq_Origin_Lat, and TWO_PI.

Referenced by forward(), and Set_Azimuthal_Equidistant_Parameters().

 {
 /* Begin Convert_Geodetic_To_Azimuthal_Equidistant */
 /*
  * The function Convert_Geodetic_To_Azimuthal_Equidistant converts geodetic (latitude and
  * longitude) coordinates to Azimuthal Equidistant projection (easting and northing)
  * coordinates, according to the current ellipsoid and Azimuthal Equidistant projection
  * parameters.  If any errors occur, the error code(s) are returned by the
  * function, otherwise AZEQ_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)
  */
 
   double dlam;       /* Longitude - Central Meridan */
   double k_prime;    /* scale factor */
   double c;          /* angular distance from center */
   double slat = sin(Latitude);
   double clat = cos(Latitude);
   double cos_c;
   double sin_dlam, cos_dlam;
   double Ra_kprime;
   double Ra_PI_OVER_2_Lat;
   long Error_Code = AZEQ_NO_ERROR;
 
 //   if ((Latitude < -PI_OVER_2) || (Latitude > PI_OVER_2))
 //   { /* Latitude out of range */
 //     Error_Code |= AZEQ_LAT_ERROR;
 //   }
 //   if ((Longitude < -M_PI) || (Longitude > TWO_PI))
 //   { /* Longitude out of range */
 //     Error_Code |= AZEQ_LON_ERROR;
 //   }
   if (!Error_Code)
   { /* no errors */
     dlam = Longitude - Azeq_Origin_Long;
     if (dlam > M_PI)
     {
       dlam -= TWO_PI;
     }
     if (dlam < -M_PI)
     {
       dlam += TWO_PI;
     }
 
     sin_dlam = sin(dlam);
     cos_dlam = cos(dlam);
     if (fabs(abs_Azeq_Origin_Lat - PI_OVER_2) < 1.0e-10)
     {
       if (Azeq_Origin_Lat >= 0.0)
       {
         Ra_PI_OVER_2_Lat = Ra * (PI_OVER_2 - Latitude);
         *Easting = Ra_PI_OVER_2_Lat * sin_dlam + Azeq_False_Easting;
         *Northing = -1.0 * (Ra_PI_OVER_2_Lat * cos_dlam) + Azeq_False_Northing;
       }
       else
       {
         Ra_PI_OVER_2_Lat = Ra * (PI_OVER_2 + Latitude);
         *Easting = Ra_PI_OVER_2_Lat * sin_dlam + Azeq_False_Easting;
         *Northing = Ra_PI_OVER_2_Lat * cos_dlam + Azeq_False_Northing;
       }
     }
     else if (abs_Azeq_Origin_Lat <= 1.0e-10)
     {
       cos_c = clat * cos_dlam;
       if (fabs(fabs(cos_c) - 1.0) < 1.0e-14)
       {
         if (cos_c >= 0.0)
         {
           *Easting = Azeq_False_Easting;
           *Northing = Azeq_False_Northing;
         }
         else
         {
           /* if cos_c == -1 */
           Error_Code |= AZEQ_PROJECTION_ERROR;
         }
       }
       else
       {
         c = acos(cos_c);
         k_prime = c / sin(c);
         Ra_kprime = Ra * k_prime;
         *Easting = Ra_kprime * clat * sin_dlam + Azeq_False_Easting;
         *Northing = Ra_kprime * slat + Azeq_False_Northing;
       }
     }
     else
     {
       cos_c = (Sin_Azeq_Origin_Lat * slat) + (Cos_Azeq_Origin_Lat * clat * cos_dlam);
       if (fabs(fabs(cos_c) - 1.0) < 1.0e-14)
       {
         if (cos_c >= 0.0)
         {
           *Easting = Azeq_False_Easting;
           *Northing = Azeq_False_Northing;
         }
         else
         {
           /* if cos_c == -1 */
           Error_Code |= AZEQ_PROJECTION_ERROR;
         }
       }
       else
       {
         c = acos(cos_c);
         k_prime = c / sin(c);
         Ra_kprime = Ra * k_prime;
         *Easting = Ra_kprime * clat * sin_dlam + Azeq_False_Easting;
         *Northing = Ra_kprime * (Cos_Azeq_Origin_Lat * slat - Sin_Azeq_Origin_Lat * clat * cos_dlam) + Azeq_False_Northing;
       }
     }
   }
   return (Error_Code);
 } /* End Convert_Geodetic_To_Azimuthal_Equidistant */

◆ dup()

virtual ossimObject* ossimAzimEquDistProjection::dup ( ) const

inlinevirtual

Implements ossimProjection.

Definition at line 33 of file ossimAzimEquDistProjection.h.

    {
       return new ossimAzimEquDistProjection(*this);
    }

◆ forward()

ossimDpt ossimAzimEquDistProjection::forward ( const ossimGpt & worldPoint ) const

virtual

All map projections will convert the world coordinate to an easting northing (Meters).

Implements ossimMapProjection.

Definition at line 79 of file ossimAzimEquDistProjection.cpp.

References ossimGpt::changeDatum(), ossimDatum::code(), Convert_Geodetic_To_Azimuthal_Equidistant(), ossimGpt::datum(), ossimGpt::latr(), ossimGpt::lonr(), and ossimMapProjection::theDatum.

 {
    double easting  = 0.0;
    double northing = 0.0;
    ossimGpt gpt = latLon;
    
    if (theDatum)
    {
       if (theDatum->code() != latLon.datum()->code())
       {
          gpt.changeDatum(theDatum); // Shift to our datum.
       }
    }
 
    Convert_Geodetic_To_Azimuthal_Equidistant(gpt.latr(),
                                              gpt.lonr(),
                                              &easting,
                                              &northing);
    return ossimDpt(easting, northing);
 }

◆ Get_Azimuthal_Equidistant_Parameters()

void ossimAzimEquDistProjection::Get_Azimuthal_Equidistant_Parameters	(	double *	a,
		double *	f,
		double *	Origin_Latitude,
		double *	Central_Meridian,
		double *	False_Easting,
		double *	False_Northing
	)		const

protected

The function Get_Azimuthal_Equidistant_Parameters returns the current ellipsoid parameters and Azimuthal Equidistant 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 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)

Definition at line 248 of file ossimAzimEquDistProjection.cpp.

References Azeq_a, Azeq_f, Azeq_False_Easting, Azeq_False_Northing, Azeq_Origin_Lat, and Azeq_Origin_Long.

 {
 /* Begin Get_Azimuthal_Equidistant_Parameters */
 /*
  * The function Get_Azimuthal_Equidistant_Parameters returns the current ellipsoid
  * parameters and Azimuthal Equidistant 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
  *    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)
  */
 
   *a = Azeq_a;
   *f = Azeq_f;
   *Origin_Latitude = Azeq_Origin_Lat;
   *Central_Meridian = Azeq_Origin_Long;
   *False_Easting = Azeq_False_Easting;
   *False_Northing = Azeq_False_Northing;
   return;
 } /* End Get_Azimuthal_Equidistant_Parameters */

◆ getFalseEasting()

double ossimAzimEquDistProjection::getFalseEasting ( ) const

inlinevirtual

Returns: The false easting.

Reimplemented from ossimMapProjection.

Definition at line 42 of file ossimAzimEquDistProjection.h.

42 {return Azeq_False_Easting;}

ossimAzimEquDistProjection::Azeq_False_Easting

double Azeq_False_Easting

Definition: ossimAzimEquDistProjection.h:96

◆ getFalseNorthing()

double ossimAzimEquDistProjection::getFalseNorthing ( ) const

inlinevirtual

Returns: The false northing.

Reimplemented from ossimMapProjection.

Definition at line 43 of file ossimAzimEquDistProjection.h.

43 {return Azeq_False_Northing;}

ossimAzimEquDistProjection::Azeq_False_Northing

double Azeq_False_Northing

Definition: ossimAzimEquDistProjection.h:95

◆ inverse()

ossimGpt ossimAzimEquDistProjection::inverse ( const ossimDpt & projectedPoint ) const

virtual

Will take a point in meters and convert it to ground.

Implements ossimMapProjection.

Definition at line 67 of file ossimAzimEquDistProjection.cpp.

References Convert_Azimuthal_Equidistant_To_Geodetic(), DEG_PER_RAD, ossimMapProjection::theDatum, ossimDpt::x, and ossimDpt::y.

 {
    double lat, lon;
 
    Convert_Azimuthal_Equidistant_To_Geodetic(eastingNorthing.x,
                                              eastingNorthing.y,
                                              &lat,
                                              &lon);
    
    return ossimGpt(lat*DEG_PER_RAD, lon*DEG_PER_RAD, 0.0, theDatum);  
 }

◆ loadState()

bool ossimAzimEquDistProjection::loadState	(	const ossimKeywordlist &	kwl,
		const char *	prefix = `0`
	)

virtual

Method to the load (recreate) the state of an object from a keyword list. Return true if ok or false on error.

Reimplemented from ossimMapProjection.

Definition at line 135 of file ossimAzimEquDistProjection.cpp.

References Azeq_False_Easting, Azeq_False_Northing, ossimKeywordlist::find(), ossimMapProjection::loadState(), setDefaults(), STATIC_TYPE_NAME, ossimMapProjection::theFalseEastingNorthing, ossimKeywordNames::TYPE_KW, update(), ossimDpt::x, and ossimDpt::y.

 {
    // Must do first...
    bool flag = ossimMapProjection::loadState(kwl, prefix);
 
    const char* type          = kwl.find(prefix, ossimKeywordNames::TYPE_KW);
    setDefaults();
    if(ossimString(type) == STATIC_TYPE_NAME(ossimAzimEquDistProjection))
    {
       Azeq_False_Easting  = theFalseEastingNorthing.x;
       Azeq_False_Northing = theFalseEastingNorthing.y;
    }
 
    update();
    
    return flag;
 }

◆ saveState()

bool ossimAzimEquDistProjection::saveState	(	ossimKeywordlist &	kwl,
		const char *	prefix = `0`
	)		const

virtual

Method to save the state of an object to a keyword list. Return true if ok or false on error.

Reimplemented from ossimMapProjection.

Definition at line 130 of file ossimAzimEquDistProjection.cpp.

References ossimMapProjection::saveState().

 {
    return ossimMapProjection::saveState(kwl, prefix);
 }

◆ Set_Azimuthal_Equidistant_Parameters()

long ossimAzimEquDistProjection::Set_Azimuthal_Equidistant_Parameters	(	double	a,
		double	f,
		double	Origin_Latitude,
		double	Central_Meridian,
		double	False_Easting,
		double	False_Northing
	)

protected

The function Set_Azimuthal_Equidistant_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 AZEQ_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 Central_Meridian : Longitude in radians at the center of (input) the projection 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)

Definition at line 153 of file ossimAzimEquDistProjection.cpp.

References abs_Azeq_Origin_Lat, Azeq_a, Azeq_Delta_Easting, Azeq_Delta_Northing, Azeq_f, Azeq_False_Easting, Azeq_False_Northing, AZEQ_NO_ERROR, Azeq_Origin_Lat, Azeq_Origin_Long, Convert_Geodetic_To_Azimuthal_Equidistant(), Cos_Azeq_Origin_Lat, M_PI, ONE, PI_OVER_2, Ra, and Sin_Azeq_Origin_Lat.

Referenced by update().

 {
 /* BEGIN Set_Azimuthal_Equidistant_Parameters */
 /*
  * The function Set_Azimuthal_Equidistant_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 AZEQ_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
  *    Central_Meridian  : Longitude in radians at the center of     (input)
  *                          the projection
  *    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)
  */
 
   double es2, es4, es6;
 //  double inv_f = 1 / f;
   double temp_Northing = 0.0;
   long Error_Code = AZEQ_NO_ERROR;
 
 //   if (a <= 0.0)
 //   { /* Semi-major axis must be greater than zero */
 //     Error_Code |= AZEQ_A_ERROR;
 //   }
 //   if ((inv_f < 250) || (inv_f > 350))
 //   { /* Inverse flattening must be between 250 and 350 */
 //     Error_Code |= AZEQ_INV_F_ERROR;
 //   }
 //   if ((Origin_Latitude < -PI_OVER_2) || (Origin_Latitude > PI_OVER_2))
 //   { /* origin latitude out of range */
 //     Error_Code |= AZEQ_ORIGIN_LAT_ERROR;
 //   }
 //   if ((Central_Meridian < -PI) || (Central_Meridian > TWO_PI))
 //   { /* origin longitude out of range */
 //     Error_Code |= AZEQ_CENT_MER_ERROR;
 //   }
   if (!Error_Code)
   { /* no errors */
     Azeq_a = a;
     Azeq_f = f;
     es2 = 2 * Azeq_f - Azeq_f * Azeq_f;
     es4 = es2 * es2;
     es6 = es4 * es2;
     /* spherical radius */
     Ra = Azeq_a * (1.0 - es2 / 6.0 - 17.0 * es4 / 360.0 - 67.0 * es6 / 3024.0);
     Azeq_Origin_Lat = Origin_Latitude;
     Sin_Azeq_Origin_Lat = sin(Azeq_Origin_Lat);
     Cos_Azeq_Origin_Lat = cos(Azeq_Origin_Lat);
     abs_Azeq_Origin_Lat = fabs(Azeq_Origin_Lat);
 //     if (Central_Meridian > M_PI)
 //       Central_Meridian -= TWO_PI;
     Azeq_Origin_Long = Central_Meridian;
     Azeq_False_Northing = False_Northing;
     Azeq_False_Easting = False_Easting;
 
     if (fabs(abs_Azeq_Origin_Lat - PI_OVER_2) < 1.0e-10)
     {
       Azeq_Delta_Northing = 20015110.0;
       Azeq_Delta_Easting = 20015110.0;
     }
     else if (abs_Azeq_Origin_Lat >= 1.0e-10)
     {
       if (Azeq_Origin_Long > 0.0)
       {
         Convert_Geodetic_To_Azimuthal_Equidistant(-Azeq_Origin_Lat, 
                                                   (Azeq_Origin_Long - M_PI - ONE), &Azeq_Delta_Easting, &temp_Northing);
       }
       else
       {
         Convert_Geodetic_To_Azimuthal_Equidistant(-Azeq_Origin_Lat, 
                                                   (Azeq_Origin_Long + M_PI - ONE), &Azeq_Delta_Easting, &temp_Northing);
       }
       Azeq_Delta_Northing = 19903915.0;
     }
     else
     {
       Azeq_Delta_Northing = 19903915.0;
       Azeq_Delta_Easting = 19903915.0;
     }
   } /* End if(!Error_Code) */
   return (Error_Code);
 } /* End Set_Azimuthal_Equidistant_Parameters */

◆ setDefaults()

void ossimAzimEquDistProjection::setDefaults ( )

Will initialize all parameters to a default values and then call update for pre-computations.

Definition at line 123 of file ossimAzimEquDistProjection.cpp.

References Azeq_False_Easting, Azeq_False_Northing, and update().

Referenced by loadState().

 {
    Azeq_False_Easting  = 0.0;
    Azeq_False_Northing = 0.0;
    update();
 }

◆ setFalseEasting()

void ossimAzimEquDistProjection::setFalseEasting ( double falseEasting )

SetFalseEasting. The value is in meters. Update is then called so we can pre-compute paramters

Definition at line 100 of file ossimAzimEquDistProjection.cpp.

References Azeq_False_Easting, and update().

 {
    Azeq_False_Easting = falseEasting;
 
    update();
 }

◆ setFalseEastingNorthing()

void ossimAzimEquDistProjection::setFalseEastingNorthing	(	double	falseEasting,
		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

Definition at line 114 of file ossimAzimEquDistProjection.cpp.

References Azeq_False_Easting, Azeq_False_Northing, and update().

Referenced by ossimAzimEquDistProjection().

 {
    Azeq_False_Easting = falseEasting;
    Azeq_False_Northing = falseNorthing;
    
    update();   
 }

◆ setFalseNorthing()

void ossimAzimEquDistProjection::setFalseNorthing ( double falseNorthing )

SetFalseNorthing. The value is in meters. Update is then called so we can pre-compute paramters

Definition at line 107 of file ossimAzimEquDistProjection.cpp.

References Azeq_False_Northing, and update().

 {
    Azeq_False_Northing = falseNorthing;
    
    update();
 }

◆ update()

void ossimAzimEquDistProjection::update ( )

virtual

Reimplemented from ossimMapProjection.

Definition at line 52 of file ossimAzimEquDistProjection.cpp.

References Azeq_False_Easting, Azeq_False_Northing, ossimEllipsoid::getA(), ossimEllipsoid::getFlattening(), ossimGpt::latr(), ossimGpt::lonr(), Set_Azimuthal_Equidistant_Parameters(), ossimMapProjection::theEllipsoid, ossimMapProjection::theFalseEastingNorthing, ossimMapProjection::theOrigin, ossimMapProjection::update(), ossimDpt::x, and ossimDpt::y.

Referenced by loadState(), setDefaults(), setFalseEasting(), setFalseEastingNorthing(), and setFalseNorthing().

 {
    Set_Azimuthal_Equidistant_Parameters(theEllipsoid.getA(),
                                         theEllipsoid.getFlattening(),
                                         theOrigin.latr(),
                                         theOrigin.lonr(),
                                         Azeq_False_Easting,
                                         Azeq_False_Northing);
 
    theFalseEastingNorthing.x = Azeq_False_Easting;
    theFalseEastingNorthing.y = Azeq_False_Northing;
 
    ossimMapProjection::update();                                     
 }