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# ogr_spatialref.h

Go to the documentation of this file.

    00001 /******************************************************************************
    00002  * $Id: ogr_spatialref.h 15742 2008-11-15 22:56:31Z rouault $
    00003  *
    00004  * Project:  OpenGIS Simple Features Reference Implementation
    00005  * Purpose:  Classes for manipulating spatial reference systems in a
    00006  *           platform non-specific manner.
    00007  * Author:   Frank Warmerdam, warmerdam@pobox.com
    00008  *
    00009  ******************************************************************************
    00010  * Copyright (c) 1999,  Les Technologies SoftMap Inc.
    00011  *
    00012  * Permission is hereby granted, free of charge, to any person obtaining a
    00013  * copy of this software and associated documentation files (the "Software"),
    00014  * to deal in the Software without restriction, including without limitation
    00015  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
    00016  * and/or sell copies of the Software, and to permit persons to whom the
    00017  * Software is furnished to do so, subject to the following conditions:
    00018  *
    00019  * The above copyright notice and this permission notice shall be included
    00020  * in all copies or substantial portions of the Software.
    00021  *
    00022  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    00023  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00024  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
    00025  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00026  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    00027  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    00028  * DEALINGS IN THE SOFTWARE.
    00029  ****************************************************************************/
    00030
    00031 #ifndef _OGR_SPATIALREF_H_INCLUDED
    00032 #define _OGR_SPATIALREF_H_INCLUDED
    00033
    00034 #include "ogr_srs_api.h"
    00035
    00042 /************************************************************************/
    00043 /*                             OGR_SRSNode                              */
    00044 /************************************************************************/
    00045
    00059 class CPL_DLL OGR_SRSNode
    00060 {
    00061     char        *pszValue;
    00062
    00063     OGR_SRSNode **papoChildNodes;
    00064     OGR_SRSNode *poParent;
    00065
    00066     int         nChildren;
    00067
    00068     void        ClearChildren();
    00069     int         NeedsQuoting() const;
    00070
    00071   public:
    00072                 OGR_SRSNode(const char * = NULL);
    00073                 ~OGR_SRSNode();
    00074
    00075     int         IsLeafNode() const { return nChildren == 0; }
    00076
    00077     int         GetChildCount() const { return nChildren; }
    00078     OGR_SRSNode *GetChild( int );
    00079     const OGR_SRSNode *GetChild( int ) const;
    00080
    00081     OGR_SRSNode *GetNode( const char * );
    00082     const OGR_SRSNode *GetNode( const char * ) const;
    00083
    00084     void        InsertChild( OGR_SRSNode *, int );
    00085     void        AddChild( OGR_SRSNode * );
    00086     int         FindChild( const char * ) const;
    00087     void        DestroyChild( int );
    00088     void        StripNodes( const char * );
    00089
    00090     const char  *GetValue() const { return pszValue; }
    00091     void        SetValue( const char * );
    00092
    00093     void        MakeValueSafe();
    00094     OGRErr      FixupOrdering();
    00095
    00096     OGR_SRSNode *Clone() const;
    00097
    00098     OGRErr      importFromWkt( char ** );
    00099     OGRErr      exportToWkt( char ** ) const;
    00100     OGRErr      exportToPrettyWkt( char **, int = 1) const;
    00101
    00102     OGRErr      applyRemapper( const char *pszNode,
    00103                                char **papszSrcValues,
    00104                                char **papszDstValues,
    00105                                int nStepSize = 1,
    00106                                int bChildOfHit = FALSE );
    00107 };
    00108
    00109 /************************************************************************/
    00110 /*                         OGRSpatialReference                          */
    00111 /************************************************************************/
    00112
    00127 class CPL_DLL OGRSpatialReference
    00128 {
    00129     double      dfFromGreenwich;
    00130     double      dfToMeter;
    00131     double      dfToDegrees;
    00132
    00133     OGR_SRSNode *poRoot;
    00134
    00135     int         nRefCount;
    00136     int         bNormInfoSet;
    00137
    00138     OGRErr      ValidateProjection();
    00139     int         IsAliasFor( const char *, const char * );
    00140     void        GetNormInfo() const;
    00141
    00142   public:
    00143                 OGRSpatialReference(const OGRSpatialReference&);
    00144                 OGRSpatialReference(const char * = NULL);
    00145
    00146     virtual    ~OGRSpatialReference();
    00147
    00148     OGRSpatialReference &operator=(const OGRSpatialReference&);
    00149
    00150     int         Reference();
    00151     int         Dereference();
    00152     int         GetReferenceCount() const { return nRefCount; }
    00153     void        Release();
    00154
    00155     OGRSpatialReference *Clone() const;
    00156     OGRSpatialReference *CloneGeogCS() const;
    00157
    00158     OGRErr      exportToWkt( char ** ) const;
    00159     OGRErr      exportToPrettyWkt( char **, int = FALSE) const;
    00160     OGRErr      exportToProj4( char ** ) const;
    00161     OGRErr      exportToPCI( char **, char **, double ** ) const;
    00162     OGRErr      exportToUSGS( long *, long *, double **, long * ) const;
    00163     OGRErr      exportToXML( char **, const char * = NULL ) const;
    00164     OGRErr      exportToPanorama( long *, long *, long *, long *,
    00165                                   double * ) const;
    00166     OGRErr      exportToERM( char *pszProj, char *pszDatum, char *pszUnits );
    00167     OGRErr      exportToMICoordSys( char ** ) const;
    00168
    00169     OGRErr      importFromWkt( char ** );
    00170     OGRErr      importFromProj4( const char * );
    00171     OGRErr      importFromEPSG( int );
    00172     OGRErr      importFromEPSGA( int );
    00173     OGRErr      importFromESRI( char ** );
    00174     OGRErr      importFromPCI( const char *, const char * = NULL,
    00175                                double * = NULL );
    00176     OGRErr      importFromUSGS( long iProjSys, long iZone,
    00177                                 double *padfPrjParams,
    00178                                 long iDatum, int bAnglesInPackedDMSFormat = TRUE );
    00179     OGRErr      importFromPanorama( long, long, long, double* );
    00180     OGRErr      importFromWMSAUTO( const char *pszAutoDef );
    00181     OGRErr      importFromXML( const char * );
    00182     OGRErr      importFromDict( const char *pszDict, const char *pszCode );
    00183     OGRErr      importFromURN( const char * );
    00184     OGRErr      importFromERM( const char *pszProj, const char *pszDatum,
    00185                                const char *pszUnits );
    00186     OGRErr      importFromUrl( const char * );
    00187     OGRErr      importFromMICoordSys( const char * );
    00188
    00189     OGRErr      morphToESRI();
    00190     OGRErr      morphFromESRI();
    00191
    00192     OGRErr      Validate();
    00193     OGRErr      StripCTParms( OGR_SRSNode * = NULL );
    00194     OGRErr      FixupOrdering();
    00195     OGRErr      Fixup();
    00196
    00197     int         EPSGTreatsAsLatLong();
    00198     const char *GetAxis( const char *pszTargetKey, int iAxis,
    00199                          OGRAxisOrientation *peOrientation );
    00200     OGRErr      SetAxes( const char *pszTargetKey,
    00201                          const char *pszXAxisName,
    00202                          OGRAxisOrientation eXAxisOrientation,
    00203                          const char *pszYAxisName,
    00204                          OGRAxisOrientation eYAxisOrientation );
    00205
    00206     // Machinary for accessing parse nodes
    00207     OGR_SRSNode *GetRoot() { return poRoot; }
    00208     const OGR_SRSNode *GetRoot() const { return poRoot; }
    00209     void        SetRoot( OGR_SRSNode * );
    00210
    00211     OGR_SRSNode *GetAttrNode(const char *);
    00212     const OGR_SRSNode *GetAttrNode(const char *) const;
    00213     const char  *GetAttrValue(const char *, int = 0) const;
    00214
    00215     OGRErr      SetNode( const char *, const char * );
    00216     OGRErr      SetNode( const char *, double );
    00217
    00218     OGRErr      SetLinearUnitsAndUpdateParameters( const char *pszName,
    00219                                                    double dfInMeters );
    00220     OGRErr      SetLinearUnits( const char *pszName, double dfInMeters );
    00221     double      GetLinearUnits( char ** = NULL ) const;
    00222
    00223     OGRErr      SetAngularUnits( const char *pszName, double dfInRadians );
    00224     double      GetAngularUnits( char ** = NULL ) const;
    00225
    00226     double      GetPrimeMeridian( char ** = NULL ) const;
    00227
    00228     int         IsGeographic() const;
    00229     int         IsProjected() const;
    00230     int         IsLocal() const;
    00231     int         IsSameGeogCS( const OGRSpatialReference * ) const;
    00232     int         IsSame( const OGRSpatialReference * ) const;
    00233
    00234     void        Clear();
    00235     OGRErr      SetLocalCS( const char * );
    00236     OGRErr      SetProjCS( const char * );
    00237     OGRErr      SetProjection( const char * );
    00238     OGRErr      SetGeogCS( const char * pszGeogName,
    00239                            const char * pszDatumName,
    00240                            const char * pszEllipsoidName,
    00241                            double dfSemiMajor, double dfInvFlattening,
    00242                            const char * pszPMName = NULL,
    00243                            double dfPMOffset = 0.0,
    00244                            const char * pszUnits = NULL,
    00245                            double dfConvertToRadians = 0.0 );
    00246     OGRErr      SetWellKnownGeogCS( const char * );
    00247     OGRErr      CopyGeogCSFrom( const OGRSpatialReference * poSrcSRS );
    00248
    00249     OGRErr      SetFromUserInput( const char * );
    00250
    00251     OGRErr      SetTOWGS84( double, double, double,
    00252                             double = 0.0, double = 0.0, double = 0.0,
    00253                             double = 0.0 );
    00254     OGRErr      GetTOWGS84( double *padfCoef, int nCoeff = 7 ) const;
    00255
    00256     double      GetSemiMajor( OGRErr * = NULL ) const;
    00257     double      GetSemiMinor( OGRErr * = NULL ) const;
    00258     double      GetInvFlattening( OGRErr * = NULL ) const;
    00259
    00260     OGRErr      SetAuthority( const char * pszTargetKey,
    00261                               const char * pszAuthority,
    00262                               int nCode );
    00263
    00264     OGRErr      AutoIdentifyEPSG();
    00265     int         GetEPSGGeogCS();
    00266
    00267     const char *GetAuthorityCode( const char * pszTargetKey ) const;
    00268     const char *GetAuthorityName( const char * pszTargetKey ) const;
    00269
    00270     const char *GetExtension( const char *pszTargetKey,
    00271                               const char *pszName,
    00272                               const char *pszDefault = NULL ) const;
    00273     OGRErr      SetExtension( const char *pszTargetKey,
    00274                               const char *pszName,
    00275                               const char *pszValue );
    00276
    00277     int         FindProjParm( const char *pszParameter,
    00278                               const OGR_SRSNode *poPROJCS=NULL ) const;
    00279     OGRErr      SetProjParm( const char *, double );
    00280     double      GetProjParm( const char *, double =0.0, OGRErr* = NULL ) const;
    00281
    00282     OGRErr      SetNormProjParm( const char *, double );
    00283     double      GetNormProjParm( const char *, double=0.0, OGRErr* =NULL)const;
    00284
    00285     static int  IsAngularParameter( const char * );
    00286     static int  IsLongitudeParameter( const char * );
    00287     static int  IsLinearParameter( const char * );
    00288
    00290     OGRErr      SetACEA( double dfStdP1, double dfStdP2,
    00291                          double dfCenterLat, double dfCenterLong,
    00292                          double dfFalseEasting, double dfFalseNorthing );
    00293
    00295     OGRErr      SetAE( double dfCenterLat, double dfCenterLong,
    00296                        double dfFalseEasting, double dfFalseNorthing );
    00297
    00299     OGRErr      SetBonne( double dfStdP1, double dfCentralMeridian,
    00300                           double dfFalseEasting, double dfFalseNorthing );
    00301
    00303     OGRErr      SetCEA( double dfStdP1, double dfCentralMeridian,
    00304                         double dfFalseEasting, double dfFalseNorthing );
    00305
    00307     OGRErr      SetCS( double dfCenterLat, double dfCenterLong,
    00308                        double dfFalseEasting, double dfFalseNorthing );
    00309
    00311     OGRErr      SetEC( double dfStdP1, double dfStdP2,
    00312                        double dfCenterLat, double dfCenterLong,
    00313                        double dfFalseEasting, double dfFalseNorthing );
    00314
    00316     OGRErr      SetEckert( int nVariation, double dfCentralMeridian,
    00317                            double dfFalseEasting, double dfFalseNorthing );
    00318
    00319     OGRErr      SetEckertIV( double dfCentralMeridian,
    00320                              double dfFalseEasting, double dfFalseNorthing );
    00321
    00322     OGRErr      SetEckertVI( double dfCentralMeridian,
    00323                              double dfFalseEasting, double dfFalseNorthing );
    00324
    00326     OGRErr      SetEquirectangular(double dfCenterLat, double dfCenterLong,
    00327                             double dfFalseEasting, double dfFalseNorthing );
    00329     OGRErr      SetEquirectangular2( double dfCenterLat, double dfCenterLong,
    00330                                      double dfPseudoStdParallel1,
    00331                                      double dfFalseEasting, double dfFalseNorthing );
    00332
    00334     OGRErr      SetGEOS( double dfCentralMeridian, double dfSatelliteHeight,
    00335                          double dfFalseEasting, double dfFalseNorthing );
    00336
    00338     OGRErr      SetGH( double dfCentralMeridian,
    00339                        double dfFalseEasting, double dfFalseNorthing );
    00340
    00342     OGRErr      SetGS( double dfCentralMeridian,
    00343                        double dfFalseEasting, double dfFalseNorthing );
    00344
    00346     OGRErr      SetGaussSchreiberTMercator(double dfCenterLat, double dfCenterLong,
    00347                                            double dfScale,
    00348                                            double dfFalseEasting, double dfFalseNorthing );
    00349
    00351     OGRErr      SetGnomonic(double dfCenterLat, double dfCenterLong,
    00352                             double dfFalseEasting, double dfFalseNorthing );
    00353
    00354     OGRErr      SetHOM( double dfCenterLat, double dfCenterLong,
    00355                         double dfAzimuth, double dfRectToSkew,
    00356                         double dfScale,
    00357                         double dfFalseEasting, double dfFalseNorthing );
    00358
    00359     OGRErr      SetHOM2PNO( double dfCenterLat,
    00360                             double dfLat1, double dfLong1,
    00361                             double dfLat2, double dfLong2,
    00362                             double dfScale,
    00363                             double dfFalseEasting, double dfFalseNorthing );
    00364
    00366     OGRErr      SetIWMPolyconic( double dfLat1, double dfLat2,
    00367                                  double dfCenterLong,
    00368                                  double dfFalseEasting,
    00369                                  double dfFalseNorthing );
    00370
    00372     OGRErr      SetKrovak( double dfCenterLat, double dfCenterLong,
    00373                            double dfAzimuth, double dfPseudoStdParallelLat,
    00374                            double dfScale,
    00375                            double dfFalseEasting, double dfFalseNorthing );
    00376
    00378     OGRErr      SetLAEA( double dfCenterLat, double dfCenterLong,
    00379                          double dfFalseEasting, double dfFalseNorthing );
    00380
    00382     OGRErr      SetLCC( double dfStdP1, double dfStdP2,
    00383                         double dfCenterLat, double dfCenterLong,
    00384                         double dfFalseEasting, double dfFalseNorthing );
    00385
    00387     OGRErr      SetLCC1SP( double dfCenterLat, double dfCenterLong,
    00388                            double dfScale,
    00389                            double dfFalseEasting, double dfFalseNorthing );
    00390
    00392     OGRErr      SetLCCB( double dfStdP1, double dfStdP2,
    00393                          double dfCenterLat, double dfCenterLong,
    00394                          double dfFalseEasting, double dfFalseNorthing );
    00395
    00397     OGRErr      SetMC( double dfCenterLat, double dfCenterLong,
    00398                        double dfFalseEasting, double dfFalseNorthing );
    00399
    00401     OGRErr      SetMercator( double dfCenterLat, double dfCenterLong,
    00402                              double dfScale,
    00403                              double dfFalseEasting, double dfFalseNorthing );
    00404
    00405     OGRErr      SetMercator2SP( double dfStdP1,
    00406                                 double dfCenterLat, double dfCenterLong,
    00407                                 double dfFalseEasting, double dfFalseNorthing );
    00408
    00410     OGRErr      SetMollweide( double dfCentralMeridian,
    00411                               double dfFalseEasting, double dfFalseNorthing );
    00412
    00414     OGRErr      SetNZMG( double dfCenterLat, double dfCenterLong,
    00415                          double dfFalseEasting, double dfFalseNorthing );
    00416
    00418     OGRErr      SetOS( double dfOriginLat, double dfCMeridian,
    00419                        double dfScale,
    00420                        double dfFalseEasting,double dfFalseNorthing);
    00421
    00423     OGRErr      SetOrthographic( double dfCenterLat, double dfCenterLong,
    00424                                  double dfFalseEasting,double dfFalseNorthing);
    00425
    00427     OGRErr      SetPolyconic( double dfCenterLat, double dfCenterLong,
    00428                               double dfFalseEasting, double dfFalseNorthing );
    00429
    00431     OGRErr      SetPS( double dfCenterLat, double dfCenterLong,
    00432                        double dfScale,
    00433                        double dfFalseEasting, double dfFalseNorthing);
    00434
    00436     OGRErr      SetRobinson( double dfCenterLong,
    00437                              double dfFalseEasting, double dfFalseNorthing );
    00438
    00440     OGRErr      SetSinusoidal( double dfCenterLong,
    00441                                double dfFalseEasting, double dfFalseNorthing );
    00442
    00444     OGRErr      SetStereographic( double dfCenterLat, double dfCenterLong,
    00445                                   double dfScale,
    00446                                  double dfFalseEasting,double dfFalseNorthing);
    00447
    00449     OGRErr      SetSOC( double dfLatitudeOfOrigin, double dfCentralMeridian,
    00450                         double dfFalseEasting, double dfFalseNorthing );
    00451
    00453     OGRErr      SetTM( double dfCenterLat, double dfCenterLong,
    00454                        double dfScale,
    00455                        double dfFalseEasting, double dfFalseNorthing );
    00456
    00458     OGRErr      SetTMVariant( const char *pszVariantName,
    00459                               double dfCenterLat, double dfCenterLong,
    00460                               double dfScale,
    00461                               double dfFalseEasting, double dfFalseNorthing );
    00462
    00464     OGRErr      SetTMG( double dfCenterLat, double dfCenterLong,
    00465                         double dfFalseEasting, double dfFalseNorthing );
    00466
    00468     OGRErr      SetTMSO( double dfCenterLat, double dfCenterLong,
    00469                          double dfScale,
    00470                          double dfFalseEasting, double dfFalseNorthing );
    00471
    00473     OGRErr      SetTPED( double dfLat1, double dfLong1,
    00474                          double dfLat2, double dfLong2,
    00475                          double dfFalseEasting, double dfFalseNorthing );
    00476
    00478     OGRErr      SetVDG( double dfCenterLong,
    00479                         double dfFalseEasting, double dfFalseNorthing );
    00480
    00482     OGRErr      SetUTM( int nZone, int bNorth = TRUE );
    00483     int         GetUTMZone( int *pbNorth = NULL ) const;
    00484
    00486     OGRErr      SetWagner( int nVariation, double dfCenterLat,
    00487                            double dfFalseEasting, double dfFalseNorthing );
    00488
    00490     OGRErr      SetStatePlane( int nZone, int bNAD83 = TRUE,
    00491                                const char *pszOverrideUnitName = NULL,
    00492                                double dfOverrideUnit = 0.0 );
    00493 };
    00494
    00495 /************************************************************************/
    00496 /*                     OGRCoordinateTransformation                      */
    00497 /*                                                                      */
    00498 /*      This is really just used as a base class for a private          */
    00499 /*      implementation.                                                 */
    00500 /************************************************************************/
    00501
    00508 class CPL_DLL OGRCoordinateTransformation
    00509 {
    00510 public:
    00511     virtual ~OGRCoordinateTransformation() {}
    00512
    00513     // From CT_CoordinateTransformation
    00514
    00516     virtual OGRSpatialReference *GetSourceCS() = 0;
    00517
    00519     virtual OGRSpatialReference *GetTargetCS() = 0;
    00520
    00521     // From CT_MathTransform
    00522
    00538     virtual int Transform( int nCount,
    00539                            double *x, double *y, double *z = NULL ) = 0;
    00540
    00556     virtual int TransformEx( int nCount,
    00557                              double *x, double *y, double *z = NULL,
    00558                              int *pabSuccess = NULL ) = 0;
    00559
    00560 };
    00561
    00562 OGRCoordinateTransformation CPL_DLL *
    00563 OGRCreateCoordinateTransformation( OGRSpatialReference *poSource,
    00564                                    OGRSpatialReference *poTarget );
    00565
    00566 #endif /* ndef _OGR_SPATIALREF_H_INCLUDED */

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