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/******************************************************************************
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* $Id: projects.h,v 1.9 2001/04/06 01:24:13 warmerda Exp $
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* Purpose: Primary (private) include file for PROJ.4 library.
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* Author: Gerald Evenden
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******************************************************************************
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* Copyright (c) 2000, Frank Warmerdam
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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******************************************************************************
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* $Log: projects.h,v $
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* Revision 1.9 2001/04/06 01:24:13 warmerda
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* Introduced proj_api.h as a public interface for PROJ.4
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* Revision 1.8 2001/04/05 04:24:10 warmerda
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* added prototypes for new functions, and PJ_VERSION
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* Revision 1.7 2001/02/07 17:55:05 warmerda
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* Cleaned up various warnings when compiled with -Wall.
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* Revision 1.6 2000/11/30 03:37:22 warmerda
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* use proj_strtod() in dmstor()
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* Revision 1.5 2000/07/06 23:36:47 warmerda
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* added lots of datum related stuff
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/* General projections header file */
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/* standard inclusions */
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# define MIN(a,b) ((a<b) ? a : b)
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# define MAX(a,b) ((a>b) ? a : b)
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# define ABS(x) ((x<0) ? (-1*(x)) : x)
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/* maximum path/filename */
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#ifndef MAX_PATH_FILENAME
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#define MAX_PATH_FILENAME 1024
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/* prototype hypot for systems where absent */
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extern double hypot(double, double);
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/* some useful constants */
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#define HALFPI 1.5707963267948966
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#define FORTPI 0.78539816339744833
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#define PI 3.14159265358979323846
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#define TWOPI 6.2831853071795864769
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/* environment parameter name */
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#define PROJ_LIB "PROJ_LIB"
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/* maximum tag id length for +init and default files */
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#define ID_TAG_MAX 50
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/* directory delimiter for DOS support */
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#define DIR_CHAR '\\'
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/* datum_type values */
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#define PJD_UNKNOWN 0
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#define PJD_3PARAM 1 /* Molodensky */
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#define PJD_7PARAM 2 /* Molodensky */
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#define PJD_GRIDSHIFT 3
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#define PJD_WGS84 4 /* WGS84 (or anything considered equivelent) */
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/* datum system errors */
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#define PJD_ERR_GEOCENTRIC 100
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typedef struct { double u, v; } projUV;
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typedef struct { double r, i; } COMPLEX;
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typedef struct { double x, y; } XY;
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typedef struct { double lam, phi; } LP;
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typedef union { double f; int i; char *s; } PVALUE;
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char *id; /* projection keyword */
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void *(*proj)(); /* projection entry point */
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char * const *descr; /* description text */
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char *id; /* ellipse keyword name */
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char *major; /* a= value */
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char *ell; /* elliptical parameter */
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char *name; /* comments */
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char *id; /* units keyword */
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char *to_meter; /* multiply by value to get meters */
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char *name; /* comments */
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char *id; /* datum keyword */
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char *defn; /* ie. "to_wgs84=..." */
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char *ellipse_id; /* ie from ellipse table */
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char *comments; /* EPSG code, etc */
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double x_l, x_p; /* derivatives of x for lambda-phi */
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double y_l, y_p; /* derivatives of y for lambda-phi */
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double h, k; /* meridinal, parallel scales */
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double omega, thetap; /* angular distortion, theta prime */
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double conv; /* convergence */
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double s; /* areal scale factor */
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double a, b; /* max-min scale error */
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int code; /* info as to analytics, see following */
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#define IS_ANAL_XL_YL 01 /* derivatives of lon analytic */
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#define IS_ANAL_XP_YP 02 /* derivatives of lat analytic */
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#define IS_ANAL_HK 04 /* h and k analytic */
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#define IS_ANAL_CONV 010 /* convergence analytic */
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/* parameter list struct */
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typedef struct ARG_list {
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struct ARG_list *next;
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char param[1]; } paralist;
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/* base projection data structure */
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typedef struct PJconsts {
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XY (*fwd)(LP, struct PJconsts *);
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LP (*inv)(XY, struct PJconsts *);
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void (*spc)(LP, struct PJconsts *, struct FACTORS *);
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void (*pfree)(struct PJconsts *);
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paralist *params; /* parameter list */
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int over; /* over-range flag */
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int geoc; /* geocentric latitude flag */
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int is_latlong; /* proj=latlong ... not really a projection at all */
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a, /* major axis or radius if es==0 */
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e, /* eccentricity */
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one_es, /* 1 - e^2 */
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rone_es, /* 1/one_es */
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lam0, phi0, /* central longitude, latitude */
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x0, y0, /* easting and northing */
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k0, /* general scaling factor */
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to_meter, fr_meter; /* cartesian scaling */
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int datum_type; /* PJD_UNKNOWN/3PARAM/7PARAM/GRIDSHIFT/WGS84 */
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double datum_params[7];
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#endif /* end of optional extensions */
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#include "proj_api.h"
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/* Generate pj_list external or make list from include file */
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extern struct PJ_LIST pj_list[];
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#define PROJ_HEAD(id, name) \
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extern void *pj_##id(); extern char * const pj_s_##id;
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#define DO_PJ_LIST_ID
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#define PROJ_HEAD(id, name) {#id, pj_##id, &pj_s_##id},
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extern struct PJ_ELLPS pj_ellps[];
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extern struct PJ_UNITS pj_units[];
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extern struct PJ_DATUMS pj_datums[];
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/* repeatative projection code */
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#define PROJ_HEAD(id, name) static const char des_##id [] = name
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#define ENTRYA(name) const char * const pj_s_##name = des_##name; \
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PJ *pj_##name(PJ *P) { if (!P) { \
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if( (P = pj_malloc(sizeof(PJ))) != NULL) { \
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P->pfree = freeup; P->fwd = 0; P->inv = 0; \
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P->spc = 0; P->descr = des_##name;
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#define ENTRYX } return P; } else {
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#define ENTRY0(name) ENTRYA(name) ENTRYX
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#define ENTRY1(name, a) ENTRYA(name) P->a = 0; ENTRYX
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#define ENTRY2(name, a, b) ENTRYA(name) P->a = 0; P->b = 0; ENTRYX
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#define ENDENTRY(p) } return (p); }
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#define E_ERROR(err) { pj_errno = err; freeup(P); return(0); }
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#define E_ERROR_0 { freeup(P); return(0); }
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#define F_ERROR { pj_errno = -20; return(xy); }
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#define I_ERROR { pj_errno = -20; return(lp); }
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#define FORWARD(name) static XY name(LP lp, PJ *P) { XY xy
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#define INVERSE(name) static LP name(XY xy, PJ *P) { LP lp
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#define FREEUP static void freeup(PJ *P) {
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#define SPECIAL(name) static void name(LP lp, PJ *P, struct FACTORS *fac)
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#define MAX_TAB_ID 80
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typedef struct { float lam, phi; } FLP;
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typedef struct { int lam, phi; } ILP;
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char id[MAX_TAB_ID]; /* ascii info */
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LP ll; /* lower left corner coordinates */
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LP del; /* size of cells */
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ILP lim; /* limits of conversion matrix */
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FLP *cvs; /* conversion matrix */
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/* procedure prototypes */
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double dmstor(const char *, char **);
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double proj_strtod( const char *, char ** );
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void set_rtodms(int, int);
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char *rtodms(char *, double, int, int);
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double adjlon(double);
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double aacos(double), aasin(double), asqrt(double), aatan2(double, double);
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PVALUE pj_param(paralist *, char *);
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paralist *pj_mkparam(char *);
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int pj_ell_set(paralist *, double *, double *);
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int pj_datum_set(paralist *, PJ *);
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double *pj_enfn(double);
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double pj_mlfn(double, double, double, double *);
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double pj_inv_mlfn(double, double, double *);
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double pj_qsfn(double, double, double);
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double pj_tsfn(double, double, double);
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double pj_msfn(double, double, double);
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double pj_phi2(double, double);
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double pj_qsfn_(double, PJ *);
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double *pj_authset(double);
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double pj_authlat(double, double *);
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COMPLEX pj_zpoly1(COMPLEX, COMPLEX *, int);
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COMPLEX pj_zpolyd1(COMPLEX, COMPLEX *, int, COMPLEX *);
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FILE *pj_open_lib(char *, char *);
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int pj_deriv(LP, double, PJ *, struct DERIVS *);
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int pj_factors(LP, PJ *, double, struct FACTORS *);
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/* Approximation structures and procedures */
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typedef struct { /* Chebyshev or Power series structure */
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projUV a, b; /* power series range for evaluation */
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/* or Chebyshev argument shift/scaling */
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struct PW_COEF {/* row coefficient structure */
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int m; /* number of c coefficients (=0 for none) */
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double *c; /* power coefficients */
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int mu, mv; /* maximum cu and cv index (+1 for count) */
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int power; /* != 0 if power series, else Chebyshev */
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Tseries *mk_cheby(projUV, projUV, double, projUV *, projUV (*)(projUV), int, int, int);
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projUV bpseval(projUV, Tseries *);
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projUV bcheval(projUV, Tseries *);
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projUV biveval(projUV, Tseries *);
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void *vector1(int, int);
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void **vector2(int, int, int);
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int bchgen(projUV, projUV, int, int, projUV **, projUV(*)(projUV));
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int bch2bps(projUV, projUV, projUV **, int, int);
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/* nadcon related protos */
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LP nad_intr(LP, struct CTABLE *);
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LP nad_cvt(LP, int, struct CTABLE *);
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struct CTABLE *nad_init(char *);
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void nad_free(struct CTABLE *);
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extern char const pj_release[];
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#endif /* end of basic projections header */
added
removed
src/projects.h
