/******************************************************************************
* $Id$
*
* Project: PROJ.4
* Purpose: Primary (private) include file for PROJ.4 library.
* Author: Gerald Evenden
*
******************************************************************************
* Copyright (c) 2000, 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.
******************************************************************************
*
* $Log$
* Revision 1.1 2005/02/01 22:08:44 jdh2358
* Initial revision
*
* Revision 1.21 2004/10/28 16:08:13 fwarmerdam
* added pj_get_*_ref() accessors
*
* Revision 1.20 2004/10/20 17:04:29 fwarmerdam
* added geos, sterea and supporting gauss code from libproj4
*
* Revision 1.19 2004/08/31 22:57:11 warmerda
* Don't re-declare hypot() on win32 as it will conflict with math.h as per
* http://bugzilla.remotesensing.org/show_bug.cgi?id=495
*
* Revision 1.18 2004/04/15 13:56:45 warmerda
* changed PJD_ERR_GEOCENTRIC to -45
*
* Revision 1.17 2003/03/17 18:56:34 warmerda
* implement heirarchical NTv2 gridinfos
*
* Revision 1.16 2003/03/15 06:02:02 warmerda
* preliminary NTv2 support, major restructure of datum shifting
*
* Revision 1.15 2002/12/14 20:35:15 warmerda
* fix C_NAMESPACE warning issue with C_NAMESPACE_VAR for variables
*
* Revision 1.14 2002/12/14 20:16:21 warmerda
* added geocentric support, and PJ_CVSID
*
* Revision 1.13 2002/12/09 16:01:02 warmerda
* added prime meridian support
*
* Revision 1.12 2002/07/08 02:32:05 warmerda
* ensure clean C++ builds
*
* Revision 1.11 2002/06/20 16:09:31 warmerda
* removed strtod, reimplement non-GPL strtod cover within dmstor.c
*
* Revision 1.10 2002/06/13 14:06:49 warmerda
* Removed incorrect labelling of 3PARAM and 7PARAM as Molodensky.
*
* Revision 1.9 2001/04/06 01:24:13 warmerda
* Introduced proj_api.h as a public interface for PROJ.4
*
* Revision 1.8 2001/04/05 04:24:10 warmerda
* added prototypes for new functions, and PJ_VERSION
*
* Revision 1.7 2001/02/07 17:55:05 warmerda
* Cleaned up various warnings when compiled with -Wall.
*
* Revision 1.6 2000/11/30 03:37:22 warmerda
* use proj_strtod() in dmstor()
*
* Revision 1.5 2000/07/06 23:36:47 warmerda
* added lots of datum related stuff
*
*/
/* General projections header file */
#ifndef PROJECTS_H
#define PROJECTS_H
/* standard inclusions */
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef __cplusplus
#define C_NAMESPACE extern "C"
#define C_NAMESPACE_VAR extern "C"
extern "C" {
#else
#define C_NAMESPACE extern
#define C_NAMESPACE_VAR
#endif
#ifndef NULL
# define NULL 0
#endif
#ifndef FALSE
# define FALSE 0
#endif
#ifndef TRUE
# define TRUE 1
#endif
#ifndef MAX
# define MIN(a,b) ((a<b) ? a : b)
# define MAX(a,b) ((a>b) ? a : b)
#endif
#ifndef ABS
# define ABS(x) ((x<0) ? (-1*(x)) : x)
#endif
/* maximum path/filename */
#ifndef MAX_PATH_FILENAME
#define MAX_PATH_FILENAME 1024
#endif
/* prototype hypot for systems where absent */
#ifndef _WIN32
extern double hypot(double, double);
#endif
/* some useful constants */
#define HALFPI 1.5707963267948966
#define FORTPI 0.78539816339744833
#define PI 3.14159265358979323846
#define TWOPI 6.2831853071795864769
/* environment parameter name */
#ifndef PROJ_LIB
#define PROJ_LIB "PROJ_LIB"
#endif
/* maximum tag id length for +init and default files */
#ifndef ID_TAG_MAX
#define ID_TAG_MAX 50
#endif
/* directory delimiter for DOS support */
#ifdef DOS
#define DIR_CHAR '\\'
#else
#define DIR_CHAR '/'
#endif
/* datum_type values */
#define PJD_UNKNOWN 0
#define PJD_3PARAM 1
#define PJD_7PARAM 2
#define PJD_GRIDSHIFT 3
#define PJD_WGS84 4 /* WGS84 (or anything considered equivelent) */
/* datum system errors */
#define PJD_ERR_GEOCENTRIC -45
#define USE_PROJUV
typedef struct { double u, v; } projUV;
typedef struct { double r, i; } COMPLEX;
#ifndef PJ_LIB__
#define XY projUV
#define LP projUV
#else
typedef struct { double x, y; } XY;
typedef struct { double lam, phi; } LP;
#endif
typedef union { double f; int i; char *s; } PVALUE;
struct PJconsts;
struct PJ_LIST {
char *id; /* projection keyword */
struct PJconsts *(*proj)(struct PJconsts*);/* projection entry point */
char * const *descr; /* description text */
};
struct PJ_ELLPS {
char *id; /* ellipse keyword name */
char *major; /* a= value */
char *ell; /* elliptical parameter */
char *name; /* comments */
};
struct PJ_UNITS {
char *id; /* units keyword */
char *to_meter; /* multiply by value to get meters */
char *name; /* comments */
};
struct PJ_DATUMS {
char *id; /* datum keyword */
char *defn; /* ie. "to_wgs84=..." */
char *ellipse_id; /* ie from ellipse table */
char *comments; /* EPSG code, etc */
};
struct PJ_PRIME_MERIDIANS {
char *id; /* prime meridian keyword */
char *defn; /* offset from greenwich in DMS format. */
};
struct DERIVS {
double x_l, x_p; /* derivatives of x for lambda-phi */
double y_l, y_p; /* derivatives of y for lambda-phi */
};
struct FACTORS {
struct DERIVS der;
double h, k; /* meridinal, parallel scales */
double omega, thetap; /* angular distortion, theta prime */
double conv; /* convergence */
double s; /* areal scale factor */
double a, b; /* max-min scale error */
int code; /* info as to analytics, see following */
};
#define IS_ANAL_XL_YL 01 /* derivatives of lon analytic */
#define IS_ANAL_XP_YP 02 /* derivatives of lat analytic */
#define IS_ANAL_HK 04 /* h and k analytic */
#define IS_ANAL_CONV 010 /* convergence analytic */
/* parameter list struct */
typedef struct ARG_list {
struct ARG_list *next;
char used;
char param[1]; } paralist;
/* base projection data structure */
typedef struct PJconsts {
XY (*fwd)(LP, struct PJconsts *);
LP (*inv)(XY, struct PJconsts *);
void (*spc)(LP, struct PJconsts *, struct FACTORS *);
void (*pfree)(struct PJconsts *);
const char *descr;
paralist *params; /* parameter list */
int over; /* over-range flag */
int geoc; /* geocentric latitude flag */
int is_latlong; /* proj=latlong ... not really a projection at all */
int is_geocent; /* proj=geocent ... not really a projection at all */
double
a, /* major axis or radius if es==0 */
e, /* eccentricity */
es, /* e ^ 2 */
ra, /* 1/A */
one_es, /* 1 - e^2 */
rone_es, /* 1/one_es */
lam0, phi0, /* central longitude, latitude */
x0, y0, /* easting and northing */
k0, /* general scaling factor */
to_meter, fr_meter; /* cartesian scaling */
int datum_type; /* PJD_UNKNOWN/3PARAM/7PARAM/GRIDSHIFT/WGS84 */
double datum_params[7];
double from_greenwich; /* prime meridian offset (in radians) */
#ifdef PROJ_PARMS__
PROJ_PARMS__
#endif /* end of optional extensions */
} PJ;
/* public API */
#include "proj_api.h"
/* Generate pj_list external or make list from include file */
#ifndef PJ_LIST_H
extern struct PJ_LIST pj_list[];
#else
#define PROJ_HEAD(id, name) \
struct PJconsts *pj_##id(struct PJconsts*); extern char * const pj_s_##id;
#ifndef lint
#define DO_PJ_LIST_ID
#endif
#include PJ_LIST_H
#ifndef lint
#undef DO_PJ_LIST_ID
#endif
#undef PROJ_HEAD
#define PROJ_HEAD(id, name) {#id, pj_##id, &pj_s_##id},
struct PJ_LIST
pj_list[] = {
#include PJ_LIST_H
{0, 0, 0},
};
#undef PROJ_HEAD
#endif
#ifndef PJ_ELLPS__
extern struct PJ_ELLPS pj_ellps[];
#endif
#ifndef PJ_UNITS__
extern struct PJ_UNITS pj_units[];
#endif
#ifndef PJ_DATUMS__
extern struct PJ_DATUMS pj_datums[];
extern struct PJ_PRIME_MERIDIANS pj_prime_meridians[];
#endif
#ifdef PJ_LIB__
/* repeatative projection code */
#define PROJ_HEAD(id, name) static const char des_##id [] = name
#define ENTRYA(name) \
C_NAMESPACE_VAR const char * const pj_s_##name = des_##name; \
C_NAMESPACE PJ *pj_##name(PJ *P) { if (!P) { \
if( (P = (PJ*) pj_malloc(sizeof(PJ))) != NULL) { \
P->pfree = freeup; P->fwd = 0; P->inv = 0; \
P->spc = 0; P->descr = des_##name;
#define ENTRYX } return P; } else {
#define ENTRY0(name) ENTRYA(name) ENTRYX
#define ENTRY1(name, a) ENTRYA(name) P->a = 0; ENTRYX
#define ENTRY2(name, a, b) ENTRYA(name) P->a = 0; P->b = 0; ENTRYX
#define ENDENTRY(p) } return (p); }
#define E_ERROR(err) { pj_errno = err; freeup(P); return(0); }
#define E_ERROR_0 { freeup(P); return(0); }
#define F_ERROR { pj_errno = -20; return(xy); }
#define I_ERROR { pj_errno = -20; return(lp); }
#define FORWARD(name) static XY name(LP lp, PJ *P) { XY xy = {0.0,0.0}
#define INVERSE(name) static LP name(XY xy, PJ *P) { LP lp = {0.0,0.0}
#define FREEUP static void freeup(PJ *P) {
#define SPECIAL(name) static void name(LP lp, PJ *P, struct FACTORS *fac)
#endif
#define MAX_TAB_ID 80
typedef struct { float lam, phi; } FLP;
typedef struct { int lam, phi; } ILP;
struct CTABLE {
char id[MAX_TAB_ID]; /* ascii info */
LP ll; /* lower left corner coordinates */
LP del; /* size of cells */
ILP lim; /* limits of conversion matrix */
FLP *cvs; /* conversion matrix */
};
typedef struct _pj_gi {
char *gridname; /* identifying name of grid, eg "conus" or ntv2_0.gsb */
char *filename; /* full path to filename */
const char *format; /* format of this grid, ie "ctable", "ntv1",
"ntv2" or "missing". */
int grid_offset; /* offset in file, for delayed loading */
struct CTABLE *ct;
struct _pj_gi *next;
struct _pj_gi *child;
} PJ_GRIDINFO;
/* procedure prototypes */
double dmstor(const char *, char **);
void set_rtodms(int, int);
char *rtodms(char *, double, int, int);
double adjlon(double);
double aacos(double), aasin(double), asqrt(double), aatan2(double, double);
PVALUE pj_param(paralist *, char *);
paralist *pj_mkparam(char *);
int pj_ell_set(paralist *, double *, double *);
int pj_datum_set(paralist *, PJ *);
int pj_prime_meridian_set(paralist *, PJ *);
int pj_angular_units_set(paralist *, PJ *);
double *pj_enfn(double);
double pj_mlfn(double, double, double, double *);
double pj_inv_mlfn(double, double, double *);
double pj_qsfn(double, double, double);
double pj_tsfn(double, double, double);
double pj_msfn(double, double, double);
double pj_phi2(double, double);
double pj_qsfn_(double, PJ *);
double *pj_authset(double);
double pj_authlat(double, double *);
COMPLEX pj_zpoly1(COMPLEX, COMPLEX *, int);
COMPLEX pj_zpolyd1(COMPLEX, COMPLEX *, int, COMPLEX *);
FILE *pj_open_lib(char *, char *);
int pj_deriv(LP, double, PJ *, struct DERIVS *);
int pj_factors(LP, PJ *, double, struct FACTORS *);
struct PW_COEF {/* row coefficient structure */
int m; /* number of c coefficients (=0 for none) */
double *c; /* power coefficients */
};
/* Approximation structures and procedures */
typedef struct { /* Chebyshev or Power series structure */
projUV a, b; /* power series range for evaluation */
/* or Chebyshev argument shift/scaling */
struct PW_COEF *cu, *cv;
int mu, mv; /* maximum cu and cv index (+1 for count) */
int power; /* != 0 if power series, else Chebyshev */
} Tseries;
Tseries *mk_cheby(projUV, projUV, double, projUV *, projUV (*)(projUV), int, int, int);
projUV bpseval(projUV, Tseries *);
projUV bcheval(projUV, Tseries *);
projUV biveval(projUV, Tseries *);
void *vector1(int, int);
void **vector2(int, int, int);
void freev2(void **v, int nrows);
int bchgen(projUV, projUV, int, int, projUV **, projUV(*)(projUV));
int bch2bps(projUV, projUV, projUV **, int, int);
/* nadcon related protos */
LP nad_intr(LP, struct CTABLE *);
LP nad_cvt(LP, int, struct CTABLE *);
struct CTABLE *nad_init(char *);
struct CTABLE *nad_ctable_init( FILE * fid );
int nad_ctable_load( struct CTABLE *, FILE * fid );
void nad_free(struct CTABLE *);
/* higher level handling of datum grid shift files */
PJ_GRIDINFO **pj_gridlist_from_nadgrids( const char *, int * );
void pj_deallocate_grids();
PJ_GRIDINFO *pj_gridinfo_init( const char * );
int pj_gridinfo_load( PJ_GRIDINFO * );
void pj_gridinfo_free( PJ_GRIDINFO * );
void *pj_gauss_ini(double, double, double *,double *);
LP pj_gauss(LP, const void *);
LP pj_inv_gauss(LP, const void *);
extern char const pj_release[];
struct PJ_ELLPS *pj_get_ellps_ref( void );
struct PJ_DATUMS *pj_get_datums_ref( void );
struct PJ_UNITS *pj_get_units_ref( void );
struct PJ_LIST *pj_get_list_ref( void );
struct PJ_PRIME_MERIDIANS *pj_get_prime_meridians_ref( void );
#ifndef DISABLE_CVSID
# define PJ_CVSID(string) static char pj_cvsid[] = string; \
static char *cvsid_aw() { return( cvsid_aw() ? ((char *) NULL) : pj_cvsid ); }
#else
# define PJ_CVSID(string)
#endif
#ifdef __cplusplus
}
#endif
#endif /* end of basic projections header */
