isce3::core::ProjectionBase Class Reference

Abstract base class for individual projections. More...

#include <Projections.h>

Inheritance diagram for isce3::core::ProjectionBase:

Public Member Functions
	ProjectionBase (int code)
	Value constructor with EPSG code as input.
int	code () const
	Return EPSG code.
const Ellipsoid &	ellipsoid () const
	Return underlying ellipsoid.
virtual void	print () const =0
	Print function for debugging.
virtual int	forward (const Vec3 &llh, Vec3 &xyz) const =0
	Function for transforming from LLH.
Vec3	forward (const Vec3 &llh) const
	Function for transforming from LLH.
virtual int	inverse (const Vec3 &xyz, Vec3 &llh) const =0
	Function for transforming to LLH.
Vec3	inverse (const Vec3 &xyz) const
	Function for transforming to LLH.

Detailed Description

Abstract base class for individual projections.

Internally, every derived class is expected to provide two functions. forward - To convert llh (radians) to expected projection system inverse - To convert expected projection system to llh (radians)

Constructor & Destructor Documentation

ProjectionBase()

isce3::core::ProjectionBase::ProjectionBase ( int code )

inline

Value constructor with EPSG code as input.

Ellipsoid is always initialized to standard WGS84 ellipse.

Member Function Documentation

forward() [1/2]

Vec3 isce3::core::ProjectionBase::forward ( const Vec3 & llh ) const

inline

Function for transforming from LLH.

This is similar to fwd or fwd3d in PROJ.4

Parameters

[in]

llh

Lon/Lat/Height - Lon and Lat are in radians

Returns

Coordinates in specified projection system

forward() [2/2]

virtual int isce3::core::ProjectionBase::forward ( const Vec3 & llh, Vec3 & xyz ) const

pure virtual

Function for transforming from LLH.

This is similar to fwd or fwd3d in PROJ.4

Parameters

[in]	llh	Lon/Lat/Height - Lon and Lat are in radians
[out]	xyz	Coordinates in specified projection system

Implemented in isce3::core::CEA, isce3::core::Geocent, isce3::core::LonLat, isce3::core::PolarStereo, and isce3::core::UTM.

inverse() [1/2]

Vec3 isce3::core::ProjectionBase::inverse ( const Vec3 & xyz ) const

inline

Function for transforming to LLH.

This is similar to inv or inv3d in PROJ.4

Parameters

[in]

xyz

Coordinates in specified projection system

Returns

Lat/Lon/Height - Lon and Lat are in radians

inverse() [2/2]

virtual int isce3::core::ProjectionBase::inverse ( const Vec3 & xyz, Vec3 & llh ) const

pure virtual

Function for transforming to LLH.

This is similar to inv or inv3d in PROJ.4

Parameters

[in]	xyz	Coordinates in specified projection system
[out]	llh	Lat/Lon/Height - Lon and Lat are in radians

Implemented in isce3::core::CEA, isce3::core::Geocent, isce3::core::LonLat, isce3::core::PolarStereo, and isce3::core::UTM.

print()

virtual void isce3::core::ProjectionBase::print ( ) const

pure virtual

Print function for debugging.

Implemented in isce3::core::CEA, isce3::core::Geocent, isce3::core::LonLat, isce3::core::PolarStereo, and isce3::core::UTM.

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The documentation for this class was generated from the following file:

• /home/runner/work/isce3/isce3/cxx/isce3/core/Projections.h