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* $Id: ogr_spatialref.h 36411 2016-11-21 22:03:48Z rouault $
*
* Project: OpenGIS Simple Features Reference Implementation
* Purpose: Classes for manipulating spatial reference systems in a
* platform non-specific manner.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 1999, Les Technologies SoftMap Inc.
* Copyright (c) 2008-2013, Even Rouault <even dot rouault at mines-paris dot org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#ifndef OGR_SPATIALREF_H_INCLUDED
#define OGR_SPATIALREF_H_INCLUDED
#include "ogr_srs_api.h"
/**
* \file ogr_spatialref.h
*
* Coordinate systems services.
*/
/************************************************************************/
/* OGR_SRSNode */
/************************************************************************/
/**
* Objects of this class are used to represent value nodes in the parsed
* representation of the WKT SRS format. For instance UNIT["METER",1]
* would be rendered into three OGR_SRSNodes. The root node would have a
* value of UNIT, and two children, the first with a value of METER, and the
* second with a value of 1.
*
* Normally application code just interacts with the OGRSpatialReference
* object, which uses the OGR_SRSNode to implement it's data structure;
* however, this class is user accessible for detailed access to components
* of an SRS definition.
*/
class CPL_DLL OGR_SRSNode
{
char *pszValue;
OGR_SRSNode **papoChildNodes;
OGR_SRSNode *poParent;
int nChildren;
int NeedsQuoting() const;
OGRErr importFromWkt( char **, int nRecLevel, int* pnNodes );
public:
explicit OGR_SRSNode(const char * = NULL);
~OGR_SRSNode();
/** Return whether this is a leaf node.
* @return TRUE or FALSE
*/
int IsLeafNode() const { return nChildren == 0; }
int GetChildCount() const { return nChildren; }
OGR_SRSNode *GetChild( int );
const OGR_SRSNode *GetChild( int ) const;
OGR_SRSNode *GetNode( const char * );
const OGR_SRSNode *GetNode( const char * ) const;
void InsertChild( OGR_SRSNode *, int );
void AddChild( OGR_SRSNode * );
int FindChild( const char * ) const;
void DestroyChild( int );
void ClearChildren();
void StripNodes( const char * );
const char *GetValue() const { return pszValue; }
void SetValue( const char * );
void MakeValueSafe();
OGRErr FixupOrdering();
OGR_SRSNode *Clone() const;
OGRErr importFromWkt( char ** );
OGRErr exportToWkt( char ** ) const;
OGRErr exportToPrettyWkt( char **, int = 1) const;
OGRErr applyRemapper( const char *pszNode,
char **papszSrcValues,
char **papszDstValues,
int nStepSize = 1,
int bChildOfHit = FALSE );
};
/************************************************************************/
/* OGRSpatialReference */
/************************************************************************/
/**
* This class represents an OpenGIS Spatial Reference System, and contains
* methods for converting between this object organization and well known
* text (WKT) format. This object is reference counted as one instance of
* the object is normally shared between many OGRGeometry objects.
*
* Normally application code can fetch needed parameter values for this
* SRS using GetAttrValue(), but in special cases the underlying parse tree
* (or OGR_SRSNode objects) can be accessed more directly.
*
* See <a href="osr_tutorial.html">the tutorial</a> for more information on
* how to use this class.
*/
class CPL_DLL OGRSpatialReference
{
double dfFromGreenwich;
double dfToMeter;
double dfToDegrees;
OGR_SRSNode *poRoot;
int nRefCount;
int bNormInfoSet;
static OGRErr Validate(OGR_SRSNode *poRoot);
static OGRErr ValidateAuthority(OGR_SRSNode *poRoot);
static OGRErr ValidateAxis(OGR_SRSNode *poRoot);
static OGRErr ValidateUnit(OGR_SRSNode *poRoot);
static OGRErr ValidateVertDatum(OGR_SRSNode *poRoot);
static OGRErr ValidateProjection( OGR_SRSNode* poRoot );
static int IsAliasFor( const char *, const char * );
void GetNormInfo() const;
OGRErr importFromURNPart(const char* pszAuthority,
const char* pszCode,
const char* pszURN);
public:
OGRSpatialReference(const OGRSpatialReference&);
explicit OGRSpatialReference(const char * = NULL);
virtual ~OGRSpatialReference();
static void DestroySpatialReference(OGRSpatialReference* poSRS);
OGRSpatialReference &operator=(const OGRSpatialReference&);
int Reference();
int Dereference();
int GetReferenceCount() const { return nRefCount; }
void Release();
OGRSpatialReference *Clone() const;
OGRSpatialReference *CloneGeogCS() const;
void dumpReadable();
OGRErr exportToWkt( char ** ) const;
OGRErr exportToPrettyWkt( char **, int = FALSE) const;
OGRErr exportToProj4( char ** ) const;
OGRErr exportToPCI( char **, char **, double ** ) const;
OGRErr exportToUSGS( long *, long *, double **, long * ) const;
OGRErr exportToXML( char **, const char * = NULL ) const;
OGRErr exportToPanorama( long *, long *, long *, long *,
double * ) const;
OGRErr exportToERM( char *pszProj, char *pszDatum, char *pszUnits );
OGRErr exportToMICoordSys( char ** ) const;
OGRErr importFromWkt( char ** );
OGRErr importFromProj4( const char * );
OGRErr importFromEPSG( int );
OGRErr importFromEPSGA( int );
OGRErr importFromESRI( char ** );
OGRErr importFromPCI( const char *, const char * = NULL,
double * = NULL );
#define USGS_ANGLE_DECIMALDEGREES 0 /**< Angle is in decimal degrees. */
#define USGS_ANGLE_PACKEDDMS TRUE /**< Angle is in packed degree minute second. */
#define USGS_ANGLE_RADIANS 2 /**< Angle is in radians. */
OGRErr importFromUSGS( long iProjSys, long iZone,
double *padfPrjParams, long iDatum,
int nUSGSAngleFormat = USGS_ANGLE_PACKEDDMS );
OGRErr importFromPanorama( long, long, long, double* );
OGRErr importFromOzi( const char * const* papszLines );
OGRErr importFromWMSAUTO( const char *pszAutoDef );
OGRErr importFromXML( const char * );
OGRErr importFromDict( const char *pszDict, const char *pszCode );
OGRErr importFromURN( const char * );
OGRErr importFromCRSURL( const char * );
OGRErr importFromERM( const char *pszProj, const char *pszDatum,
const char *pszUnits );
OGRErr importFromUrl( const char * );
OGRErr importFromMICoordSys( const char * );
OGRErr morphToESRI();
OGRErr morphFromESRI();
OGRErr Validate();
OGRErr StripCTParms( OGR_SRSNode * = NULL );
OGRErr StripVertical();
OGRErr FixupOrdering();
OGRErr Fixup();
int EPSGTreatsAsLatLong();
int EPSGTreatsAsNorthingEasting();
const char *GetAxis( const char *pszTargetKey, int iAxis,
OGRAxisOrientation *peOrientation ) const;
OGRErr SetAxes( const char *pszTargetKey,
const char *pszXAxisName,
OGRAxisOrientation eXAxisOrientation,
const char *pszYAxisName,
OGRAxisOrientation eYAxisOrientation );
// Machinery for accessing parse nodes
//! Return root node
OGR_SRSNode *GetRoot() { return poRoot; }
//! Return root node
const OGR_SRSNode *GetRoot() const { return poRoot; }
void SetRoot( OGR_SRSNode * );
OGR_SRSNode *GetAttrNode(const char *);
const OGR_SRSNode *GetAttrNode(const char *) const;
const char *GetAttrValue(const char *, int = 0) const;
OGRErr SetNode( const char *, const char * );
OGRErr SetNode( const char *, double );
OGRErr SetLinearUnitsAndUpdateParameters( const char *pszName,
double dfInMeters );
OGRErr SetLinearUnits( const char *pszName, double dfInMeters );
OGRErr SetTargetLinearUnits( const char *pszTargetKey,
const char *pszName, double dfInMeters );
double GetLinearUnits( char ** = NULL ) const;
double GetTargetLinearUnits( const char *pszTargetKey,
char ** ppszRetName = NULL ) const;
OGRErr SetAngularUnits( const char *pszName, double dfInRadians );
double GetAngularUnits( char ** = NULL ) const;
double GetPrimeMeridian( char ** = NULL ) const;
int IsGeographic() const;
int IsProjected() const;
int IsGeocentric() const;
int IsLocal() const;
int IsVertical() const;
int IsCompound() const;
int IsSameGeogCS( const OGRSpatialReference * ) const;
int IsSameVertCS( const OGRSpatialReference * ) const;
int IsSame( const OGRSpatialReference * ) const;
void Clear();
OGRErr SetLocalCS( const char * );
OGRErr SetProjCS( const char * );
OGRErr SetProjection( const char * );
OGRErr SetGeocCS( const char * pszGeocName );
OGRErr SetGeogCS( const char * pszGeogName,
const char * pszDatumName,
const char * pszEllipsoidName,
double dfSemiMajor, double dfInvFlattening,
const char * pszPMName = NULL,
double dfPMOffset = 0.0,
const char * pszUnits = NULL,
double dfConvertToRadians = 0.0 );
OGRErr SetWellKnownGeogCS( const char * );
OGRErr CopyGeogCSFrom( const OGRSpatialReference * poSrcSRS );
OGRErr SetVertCS( const char *pszVertCSName,
const char *pszVertDatumName,
int nVertDatumClass = 2005 );
OGRErr SetCompoundCS( const char *pszName,
const OGRSpatialReference *poHorizSRS,
const OGRSpatialReference *poVertSRS );
OGRErr SetFromUserInput( const char * );
OGRErr SetTOWGS84( double, double, double,
double = 0.0, double = 0.0, double = 0.0,
double = 0.0 );
OGRErr GetTOWGS84( double *padfCoef, int nCoeff = 7 ) const;
double GetSemiMajor( OGRErr * = NULL ) const;
double GetSemiMinor( OGRErr * = NULL ) const;
double GetInvFlattening( OGRErr * = NULL ) const;
OGRErr SetAuthority( const char * pszTargetKey,
const char * pszAuthority,
int nCode );
OGRErr AutoIdentifyEPSG();
int GetEPSGGeogCS();
const char *GetAuthorityCode( const char * pszTargetKey ) const;
const char *GetAuthorityName( const char * pszTargetKey ) const;
const char *GetExtension( const char *pszTargetKey,
const char *pszName,
const char *pszDefault = NULL ) const;
OGRErr SetExtension( const char *pszTargetKey,
const char *pszName,
const char *pszValue );
int FindProjParm( const char *pszParameter,
const OGR_SRSNode *poPROJCS=NULL ) const;
OGRErr SetProjParm( const char *, double );
double GetProjParm( const char *, double =0.0, OGRErr* = NULL ) const;
OGRErr SetNormProjParm( const char *, double );
double GetNormProjParm( const char *, double=0.0, OGRErr* =NULL)const;
static int IsAngularParameter( const char * );
static int IsLongitudeParameter( const char * );
static int IsLinearParameter( const char * );
/** Albers Conic Equal Area */
OGRErr SetACEA( double dfStdP1, double dfStdP2,
double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Azimuthal Equidistant */
OGRErr SetAE( double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Bonne */
OGRErr SetBonne( double dfStdP1, double dfCentralMeridian,
double dfFalseEasting, double dfFalseNorthing );
/** Cylindrical Equal Area */
OGRErr SetCEA( double dfStdP1, double dfCentralMeridian,
double dfFalseEasting, double dfFalseNorthing );
/** Cassini-Soldner */
OGRErr SetCS( double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Equidistant Conic */
OGRErr SetEC( double dfStdP1, double dfStdP2,
double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Eckert I */
OGRErr SetEckert( int nVariation, double dfCentralMeridian,
double dfFalseEasting, double dfFalseNorthing );
/** Eckert IV */
OGRErr SetEckertIV( double dfCentralMeridian,
double dfFalseEasting, double dfFalseNorthing );
/** Eckert VI */
OGRErr SetEckertVI( double dfCentralMeridian,
double dfFalseEasting, double dfFalseNorthing );
/** Equirectangular */
OGRErr SetEquirectangular(double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Equirectangular generalized form : */
OGRErr SetEquirectangular2( double dfCenterLat, double dfCenterLong,
double dfPseudoStdParallel1,
double dfFalseEasting, double dfFalseNorthing );
/** Geostationary Satellite */
OGRErr SetGEOS( double dfCentralMeridian, double dfSatelliteHeight,
double dfFalseEasting, double dfFalseNorthing );
/** Goode Homolosine */
OGRErr SetGH( double dfCentralMeridian,
double dfFalseEasting, double dfFalseNorthing );
/** Interrupted Goode Homolosine */
OGRErr SetIGH();
/** Gall Stereograpic */
OGRErr SetGS( double dfCentralMeridian,
double dfFalseEasting, double dfFalseNorthing );
/** Gauss Schreiber Transverse Mercator */
OGRErr SetGaussSchreiberTMercator(double dfCenterLat, double dfCenterLong,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** Gnomonic */
OGRErr SetGnomonic(double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Hotine Oblique Mercator */
OGRErr SetHOM( double dfCenterLat, double dfCenterLong,
double dfAzimuth, double dfRectToSkew,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** Hotine Oblique Mercator 2 points */
OGRErr SetHOM2PNO( double dfCenterLat,
double dfLat1, double dfLong1,
double dfLat2, double dfLong2,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** Oblique Mercator */
OGRErr SetOM( double dfCenterLat, double dfCenterLong,
double dfAzimuth, double dfRectToSkew,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** Hotine Oblique Mercator Azimuth Center / Variant B */
OGRErr SetHOMAC( double dfCenterLat, double dfCenterLong,
double dfAzimuth, double dfRectToSkew,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** International Map of the World Polyconic */
OGRErr SetIWMPolyconic( double dfLat1, double dfLat2,
double dfCenterLong,
double dfFalseEasting,
double dfFalseNorthing );
/** Krovak Oblique Conic Conformal */
OGRErr SetKrovak( double dfCenterLat, double dfCenterLong,
double dfAzimuth, double dfPseudoStdParallelLat,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** Lambert Azimuthal Equal-Area */
OGRErr SetLAEA( double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Lambert Conformal Conic */
OGRErr SetLCC( double dfStdP1, double dfStdP2,
double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Lambert Conformal Conic 1SP */
OGRErr SetLCC1SP( double dfCenterLat, double dfCenterLong,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** Lambert Conformal Conic (Belgium) */
OGRErr SetLCCB( double dfStdP1, double dfStdP2,
double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Miller Cylindrical */
OGRErr SetMC( double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Mercator 1SP */
OGRErr SetMercator( double dfCenterLat, double dfCenterLong,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** Mercator 2SP */
OGRErr SetMercator2SP( double dfStdP1,
double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Mollweide */
OGRErr SetMollweide( double dfCentralMeridian,
double dfFalseEasting, double dfFalseNorthing );
/** New Zealand Map Grid */
OGRErr SetNZMG( double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Oblique Stereographic */
OGRErr SetOS( double dfOriginLat, double dfCMeridian,
double dfScale,
double dfFalseEasting,double dfFalseNorthing);
/** Orthographic */
OGRErr SetOrthographic( double dfCenterLat, double dfCenterLong,
double dfFalseEasting,double dfFalseNorthing);
/** Polyconic */
OGRErr SetPolyconic( double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Polar Stereographic */
OGRErr SetPS( double dfCenterLat, double dfCenterLong,
double dfScale,
double dfFalseEasting, double dfFalseNorthing);
/** Robinson */
OGRErr SetRobinson( double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Sinusoidal */
OGRErr SetSinusoidal( double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Stereographic */
OGRErr SetStereographic( double dfCenterLat, double dfCenterLong,
double dfScale,
double dfFalseEasting,double dfFalseNorthing);
/** Swiss Oblique Cylindrical */
OGRErr SetSOC( double dfLatitudeOfOrigin, double dfCentralMeridian,
double dfFalseEasting, double dfFalseNorthing );
/** Transverse Mercator */
OGRErr SetTM( double dfCenterLat, double dfCenterLong,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** Transverse Mercator variants. */
OGRErr SetTMVariant( const char *pszVariantName,
double dfCenterLat, double dfCenterLong,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** Tunesia Mining Grid */
OGRErr SetTMG( double dfCenterLat, double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Transverse Mercator (South Oriented) */
OGRErr SetTMSO( double dfCenterLat, double dfCenterLong,
double dfScale,
double dfFalseEasting, double dfFalseNorthing );
/** Two Point Equidistant */
OGRErr SetTPED( double dfLat1, double dfLong1,
double dfLat2, double dfLong2,
double dfFalseEasting, double dfFalseNorthing );
/** VanDerGrinten */
OGRErr SetVDG( double dfCenterLong,
double dfFalseEasting, double dfFalseNorthing );
/** Universal Transverse Mercator */
OGRErr SetUTM( int nZone, int bNorth = TRUE );
int GetUTMZone( int *pbNorth = NULL ) const;
/** Wagner I -- VII */
OGRErr SetWagner( int nVariation, double dfCenterLat,
double dfFalseEasting, double dfFalseNorthing );
/** Quadrilateralized Spherical Cube */
OGRErr SetQSC(double dfCenterLat, double dfCenterLong);
/** Spherical, Cross-track, Height */
OGRErr SetSCH( double dfPegLat, double dfPegLong,
double dfPegHeading, double dfPegHgt);
/** State Plane */
OGRErr SetStatePlane( int nZone, int bNAD83 = TRUE,
const char *pszOverrideUnitName = NULL,
double dfOverrideUnit = 0.0 );
/** ImportFromESRIStatePlaneWKT */
OGRErr ImportFromESRIStatePlaneWKT(
int nCode, const char* pszDatumName, const char* pszUnitsName,
int nPCSCode, const char* pszCSName = NULL );
/** ImportFromESRIWisconsinWKT */
OGRErr ImportFromESRIWisconsinWKT(
const char* pszPrjName, double dfCentralMeridian, double dfLatOfOrigin,
const char* pszUnitsName, const char* pszCSName = NULL );
static OGRSpatialReference* GetWGS84SRS();
};
/************************************************************************/
/* OGRCoordinateTransformation */
/* */
/* This is really just used as a base class for a private */
/* implementation. */
/************************************************************************/
/**
* Interface for transforming between coordinate systems.
*
* Currently, the only implementation within OGR is OGRProj4CT, which
* requires the PROJ.4 library to be available at run-time.
*
* Also, see OGRCreateCoordinateTransformation() for creating transformations.
*/
class CPL_DLL OGRCoordinateTransformation
{
public:
virtual ~OGRCoordinateTransformation() {}
static void DestroyCT(OGRCoordinateTransformation* poCT);
// From CT_CoordinateTransformation
/** Fetch internal source coordinate system. */
virtual OGRSpatialReference *GetSourceCS() = 0;
/** Fetch internal target coordinate system. */
virtual OGRSpatialReference *GetTargetCS() = 0;
/** Whether the transformer will emit CPLError */
virtual bool GetEmitErrors() { return false; }
/** Set if the transformer must emit CPLError */
virtual void SetEmitErrors(bool /*bEmitErrors*/) {}
// From CT_MathTransform
/**
* Transform points from source to destination space.
*
* This method is the same as the C function OCTTransform().
*
* The method TransformEx() allows extended success information to
* be captured indicating which points failed to transform.
*
* @param nCount number of points to transform.
* @param x array of nCount X vertices, modified in place.
* @param y array of nCount Y vertices, modified in place.
* @param z array of nCount Z vertices, modified in place.
* @return TRUE on success, or FALSE if some or all points fail to
* transform.
*/
virtual int Transform( int nCount,
double *x, double *y, double *z = NULL ) = 0;
/**
* Transform points from source to destination space.
*
* This method is the same as the C function OCTTransformEx().
*
* @param nCount number of points to transform.
* @param x array of nCount X vertices, modified in place.
* @param y array of nCount Y vertices, modified in place.
* @param z array of nCount Z vertices, modified in place.
* @param pabSuccess array of per-point flags set to TRUE if that point
* transforms, or FALSE if it does not.
*
* @return TRUE if some or all points transform successfully, or FALSE if
* if none transform.
*/
virtual int TransformEx( int nCount,
double *x, double *y, double *z = NULL,
int *pabSuccess = NULL ) = 0;
};
OGRCoordinateTransformation CPL_DLL *
OGRCreateCoordinateTransformation( OGRSpatialReference *poSource,
OGRSpatialReference *poTarget );
#endif /* ndef OGR_SPATIALREF_H_INCLUDED */
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