/******************************************************************************
* $Id: geo_normalize.h 1983 2011-03-10 02:10:00Z warmerdam $
*
* Project: libgeotiff
* Purpose: Include file related to geo_normalize.c containing Code to
* normalize PCS and other composite codes in a GeoTIFF file.
* Author: Frank Warmerdam, warmerda@home.com
*
******************************************************************************
* Copyright (c) 1999, Frank Warmerdam
*
* 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 GEO_NORMALIZE_H_INCLUDED
#define GEO_NORMALIZE_H_INCLUDED
#include <stdio.h>
#include "geotiff.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* \file geo_normalize.h
*
* Include file for extended projection definition normalization api.
*/
#define MAX_GTIF_PROJPARMS 10
/**
* Holds a definition of a coordinate system in normalized form.
*/
typedef struct {
/** From GTModelTypeGeoKey tag. Can have the values ModelTypeGeographic
or ModelTypeProjected. */
short Model;
/** From ProjectedCSTypeGeoKey tag. For example PCS_NAD27_UTM_zone_3N.*/
short PCS;
/** From GeographicTypeGeoKey tag. For example GCS_WGS_84 or
GCS_Voirol_1875_Paris. Includes datum and prime meridian value. */
short GCS;
/** From ProjLinearUnitsGeoKey. For example Linear_Meter. */
short UOMLength;
/** One UOMLength = UOMLengthInMeters meters. */
double UOMLengthInMeters;
/** The angular units of the GCS. */
short UOMAngle;
/** One UOMAngle = UOMLengthInDegrees degrees. */
double UOMAngleInDegrees;
/** Datum from GeogGeodeticDatumGeoKey tag. For example Datum_WGS84 */
short Datum;
/** Prime meridian from GeogPrimeMeridianGeoKey. For example PM_Greenwich
or PM_Paris. */
short PM;
/** Decimal degrees of longitude between this prime meridian and
Greenwich. Prime meridians to the west of Greenwich are negative. */
double PMLongToGreenwich;
/** Ellipsoid identifier from GeogELlipsoidGeoKey. For example
Ellipse_Clarke_1866. */
short Ellipsoid;
/** The length of the semi major ellipse axis in meters. */
double SemiMajor;
/** The length of the semi minor ellipse axis in meters. */
double SemiMinor;
/** TOWGS84 transformation values (0/3/7) */
short TOWGS84Count;
/** TOWGS84 transformation values */
double TOWGS84[7];
/** Projection id from ProjectionGeoKey. For example Proj_UTM_11S. */
short ProjCode;
/** EPSG identifier for underlying projection method. From the EPSG
TRF_METHOD table. */
short Projection;
/** GeoTIFF identifier for underlying projection method. While some of
these values have corresponding vlaues in EPSG (Projection field),
others do not. For example CT_TransverseMercator. */
short CTProjection;
/** Number of projection parameters in ProjParm and ProjParmId. */
int nParms;
/** Projection parameter value. The identify of this parameter
is established from the corresponding entry in ProjParmId. The
value will be measured in meters, or decimal degrees if it is a
linear or angular measure. */
double ProjParm[MAX_GTIF_PROJPARMS];
/** Projection parameter identifier. For example ProjFalseEastingGeoKey.
The value will be 0 for unused table entries. */
int ProjParmId[MAX_GTIF_PROJPARMS]; /* geokey identifier,
eg. ProjFalseEastingGeoKey*/
/** Special zone map system code (MapSys_UTM_South, MapSys_UTM_North,
MapSys_State_Plane or KvUserDefined if none apply. */
int MapSys;
/** UTM, or State Plane Zone number, zero if not known. */
int Zone;
/** Do we have any definition at all? 0 if no geokeys found */
int DefnSet;
} GTIFDefn;
int CPL_DLL GTIFGetPCSInfo( int nPCSCode, char **ppszEPSGName,
short *pnProjOp,
short *pnUOMLengthCode, short *pnGeogCS );
int CPL_DLL GTIFGetProjTRFInfo( int nProjTRFCode,
char ** ppszProjTRFName,
short * pnProjMethod,
double * padfProjParms );
int CPL_DLL GTIFGetGCSInfo( int nGCSCode, char **ppszName,
short *pnDatum, short *pnPM, short *pnUOMAngle );
int CPL_DLL GTIFGetDatumInfo( int nDatumCode, char **ppszName,
short * pnEllipsoid );
int CPL_DLL GTIFGetEllipsoidInfo( int nEllipsoid, char ** ppszName,
double * pdfSemiMajor,
double * pdfSemiMinor );
int CPL_DLL GTIFGetPMInfo( int nPM, char **ppszName,
double * pdfLongToGreenwich );
double CPL_DLL GTIFAngleStringToDD( const char *pszAngle, int nUOMAngle );
int CPL_DLL GTIFGetUOMLengthInfo( int nUOMLengthCode,
char **ppszUOMName,
double * pdfInMeters );
int CPL_DLL GTIFGetUOMAngleInfo( int nUOMAngleCode,
char **ppszUOMName,
double * pdfInDegrees );
double CPL_DLL GTIFAngleToDD( double dfAngle, int nUOMAngle );
/* this should be used to free strings returned by GTIFGet... funcs */
void CPL_DLL GTIFFreeMemory( char * );
void CPL_DLL GTIFDeaccessCSV( void );
int CPL_DLL GTIFGetDefn( GTIF *psGTIF, GTIFDefn * psDefn );
void CPL_DLL GTIFPrintDefn( GTIFDefn *, FILE * );
void CPL_DLL GTIFFreeDefn( GTIF * );
void CPL_DLL SetCSVFilenameHook( const char *(*CSVFileOverride)(const char *) );
const char CPL_DLL *GTIFDecToDMS( double, const char *, int );
/*
* These are useful for recognising UTM and State Plane, with or without
* CSV files being found.
*/
#define MapSys_UTM_North -9001
#define MapSys_UTM_South -9002
#define MapSys_State_Plane_27 -9003
#define MapSys_State_Plane_83 -9004
int CPL_DLL GTIFMapSysToPCS( int MapSys, int Datum, int nZone );
int CPL_DLL GTIFMapSysToProj( int MapSys, int nZone );
int CPL_DLL GTIFPCSToMapSys( int PCSCode, int * pDatum, int * pZone );
int CPL_DLL GTIFProjToMapSys( int ProjCode, int * pZone );
/*
* These are only useful if using libgeotiff with libproj (PROJ.4+).
*/
char CPL_DLL *GTIFGetProj4Defn( GTIFDefn * );
int CPL_DLL GTIFProj4ToLatLong( GTIFDefn *, int, double *, double * );
int CPL_DLL GTIFProj4FromLatLong( GTIFDefn *, int, double *, double * );
int CPL_DLL GTIFSetFromProj4( GTIF *gtif, const char *proj4 );
#if defined(HAVE_LIBPROJ) && defined(HAVE_PROJECTS_H)
# define HAVE_GTIFPROJ4
#endif
#ifdef __cplusplus
}
#endif
#endif /* ndef GEO_NORMALIZE_H_INCLUDED */