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/*
* $Id: plot.h,v 1.5 1993/05/18 03:55:52 davis Exp $
*
*/
/* GNUPLOT - plot.h */
/*
* Copyright (C) 1986 - 1993 Thomas Williams, Colin Kelley
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the modified code. Modifications are to be distributed
* as patches to released version.
*
* This software is provided "as is" without express or implied warranty.
*
*
* AUTHORS
*
* Original Software:
* Thomas Williams, Colin Kelley.
*
* Gnuplot 2.0 additions:
* Russell Lang, Dave Kotz, John Campbell.
*
* Gnuplot 3.0 additions:
* Gershon Elber and many others.
*
* Send your comments or suggestions to
* info-gnuplot@dartmouth.edu.
* This is a mailing list; to join it send a note to
* info-gnuplot-request@dartmouth.edu.
* Send bug reports to
* bug-gnuplot@dartmouth.edu.
*/
#define PROGRAM "G N U P L O T"
#define PROMPT "gnuplot> "
#if defined(AMIGA_SC_6_1) || defined(AMIGA_AC_5)
#define SHELL "NewShell"
#else /* AMIGA */
#ifdef ATARI
#define SHELL "gulam.prg"
#else /* ATARI */
#ifdef OS2
#define SHELL "c:\\cmd.exe"
#else /*OS2 */
#define SHELL "/bin/sh" /* used if SHELL env variable not set */
#endif /*OS2 */
#endif /* ATARI */
#endif /* AMIGA */
#if defined(__unix__) && !defined(unix)
#define unix
#endif
#define SAMPLES 100 /* default number of samples for a plot */
#define ISO_SAMPLES 10 /* default number of isolines per splot */
#define ZERO 1e-8 /* default for 'zero' set option */
#ifndef TERM
/* default terminal is "unknown"; but see init_terminal */
#define TERM "unknown"
#endif
#define TRUE 1
#define FALSE 0
#define Pi 3.141592653589793
#define DEG2RAD (Pi / 180.0)
#define MIN_CRV_POINTS 100 /* minimum size of points[] in curve_points */
#define MIN_SRF_POINTS 1000 /* minimum size of points[] in surface_points */
#define MAX_LINE_LEN 1024 /* maximum number of chars allowed on line */
#define MAX_TOKENS 400
#define MAX_ID_LEN 50 /* max length of an identifier */
#define MAX_AT_LEN 150 /* max number of entries in action table */
#define STACK_DEPTH 100
#define NO_CARET (-1)
#ifdef MSDOS
#define MAX_NUM_VAR 3 /* Ploting projection of func. of max. five vars. */
#else
#define MAX_NUM_VAR 5 /* Ploting projection of func. of max. five vars. */
#endif
#define MAP3D_CARTESIAN 0 /* 3D Data mapping. */
#define MAP3D_SPHERICAL 1
#define MAP3D_CYLINDRICAL 2
#define CONTOUR_NONE 0 /* Where to place contour maps if at all. */
#define CONTOUR_BASE 1
#define CONTOUR_SRF 2
#define CONTOUR_BOTH 3
#define CONTOUR_KIND_LINEAR 0 /* See contour.h in contours subdirectory. */
#define CONTOUR_KIND_CUBIC_SPL 1
#define CONTOUR_KIND_BSPLINE 2
#define LEVELS_AUTO 0 /* How contour levels are set */
#define LEVELS_INCREMENTAL 1 /* user specified start & incremnet */
#define LEVELS_DISCRETE 2 /* user specified discrete levels */
#define MAX_DISCRETE_LEVELS 30
#define ANGLES_RADIANS 0
#define ANGLES_DEGREES 1
#if defined(AMIGA_SC_6_1) || defined(AMIGA_AC_5)
#define OS "Amiga "
#endif
#ifdef OS2
#ifdef unix
#undef unix /* GCC might declare this */
#define OS "OS/2"
#endif
#endif /* OS2 */
#ifdef vms
#define OS "VMS "
#endif
#ifdef unix
#define OS "unix "
#endif
#ifdef _WINDOWS
#define _Windows
#endif
#ifdef DOS386
#define OS "DOS 386 "
#endif
#ifdef _Windows
#define OS "MS-Windows "
#else
#ifdef MSDOS
#ifdef unix /* __EMX__ and DJGPP may set this */
#undef OS
#undef unix
#endif
#define OS "MS-DOS "
#endif
#endif
#ifdef ATARI
#define OS "TOS "
#endif
#ifndef OS
#define OS ""
#endif
/* To access curves larger than 64k, MSDOS needs to use huge pointers */
#if (defined(__TURBOC__) && defined(MSDOS)) || (defined(_Windows) && !defined(WIN32))
#define GPHUGE huge
#define GPFAR far
#else
#define GPHUGE
#define GPFAR
#endif
/*
* Note about VERYLARGE: This is the upper bound double (or float, if PC)
* numbers. This flag indicates very large numbers. It doesn't have to
* be the absolutely biggest number on the machine.
* If your machine doesn't have HUGE, or float.h,
* define VERYLARGE here.
*
* This is a mess. If someone figures out how to clean this up, please
* diff -c of your fixes
*
*
* example:
#define VERYLARGE 1e37
*/
#ifdef ATARI
#include <stdlib.h> /* Prototyping used !! 'size_t' */
#include <stdio.h>
#include <string.h>
#include <math.h>
#define VERYLARGE HUGE_VAL
#else /* not ATARI */
#if defined(MSDOS) || defined(_Windows)
#include <float.h>
#define VERYLARGE (FLT_MAX/2 -1)
#else /* not MSDOS || _Windows */
#if defined( vms ) || defined( _CRAY ) || defined( NEXT ) || defined(__osf__) || defined( OS2 ) || defined(__EMX__) || defined( DOS386) || defined(KSR)
#include <float.h>
#if defined ( NEXT ) /* bug in NeXT OS 2.0 */ && !defined (NEXTFE) /*not 3.0*/
#if defined ( DBL_MAX)
#undef DBL_MAX
#endif
#define DBL_MAX 1.7976931348623157e+308
#undef HUGE
#define HUGE DBL_MAX
#undef HUGE_VAL
#define HUGE_VAL DBL_MAX
#endif /* not NEXT but CRAY, VMS or OSF */
#define VERYLARGE (DBL_MAX/2 -1)
#else /* not vms, CRAY, NEXT, OS/2 or OSF */
#ifdef AMIGA_AC_5
#include <math.h>
#define VERYLARGE (HUGE/2 -1)
#else /* not AMIGA_AC_5 */
#ifdef AMIGA_SC_6_1
#include <float.h>
#ifndef HUGE
#define HUGE DBL_MAX
#endif
#define VERYLARGE (HUGE/2 -1)
#else /* !AMIGA_SC_6_1 */
/* #include <float.h> */
#ifdef ISC22
#include <float.h>
#ifndef HUGE
#define HUGE DBL_MAX
#endif
#endif /* ISC22 */
/* This is the default */
#ifndef HUGE
#define HUGE DBL_MAX
#endif
#define VERYLARGE (HUGE/2 -1)
/* default */
#endif /* !AMIGA_SC_6_1 */
#endif /* !AMIGA_AC_5 */
#endif /* !VMS !CRAY !NEXT */
#endif /* !MSDOS || !_Windows */
#endif /* !ATARI */
#ifdef AMIGA_SC_6_1
/* Get function prototypes */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#endif /* AMIGA_SC_6_1 */
#define END_OF_COMMAND (c_token >= num_tokens || equals(c_token,";"))
#ifdef vms
#define is_comment(c) ((c) == '#' || (c) == '!')
#define is_system(c) ((c) == '$')
#else /* vms */
#define is_comment(c) ((c) == '#')
#define is_system(c) ((c) == '!')
#endif /* vms */
/* If you don't have vfork, then undefine this */
#if defined(NOVFORK) || defined(MSDOS) || defined( OS2 ) || defined(_Windows) || defined(DOS386)
# undef VFORK
#else
# ifdef unix
# define VFORK
# endif
#endif
/*
* memcpy() comes by many names. The default is now to assume bcopy,
* since it is the most common case. Define
* MEMCPY to use memcpy(),
* vms to use the vms function,
* NOCOPY to use a handwritten version in parse.c
*/
#ifdef vms
# define memcpy(dest,src,len) lib$movc3(&len,src,dest)
#else
# if defined(MEMCPY) || defined(MSDOS) || defined (ATARI) || defined( OS2 ) || defined(_Windows) || defined(DOS386)
/* use memcpy directly */
# else
# ifdef NOCOPY
/* use the handwritten memcpy in parse.c */
# else
/* assume bcopy is in use */
# define memcpy(dest,src,len) bcopy(src,dest,len)
# endif /* NOCOPY */
# endif /* MEMCPY || MSDOS */
#endif /* vms */
/*
* In case you have MEMSET instead of BZERO. If you have something
* else, define bzero to that something.
*/
#if defined(MEMSET) || defined(MSDOS) || defined( OS2 ) || defined(_Windows) || defined(DOS386)
#define bzero(dest,len) (void)(memset(dest, 0, len))
#endif /* MEMSET || MSDOS */
#define top_of_stack stack[s_p]
typedef int TBOOLEAN;
#ifdef __ZTC__
typedef int (*FUNC_PTR)(...);
#else
typedef int (*FUNC_PTR)();
#endif
enum operators {
PUSH, PUSHC, PUSHD1, PUSHD2, PUSHD, CALL, CALLN, LNOT, BNOT, UMINUS,
LOR, LAND, BOR, XOR, BAND, EQ, NE, GT, LT, GE, LE, PLUS, MINUS, MULT,
DIV, MOD, POWER, FACTORIAL, BOOLE, JUMP, JUMPZ, JUMPNZ, JTERN, SF_START
};
#define is_jump(operator) ((operator) >=(int)JUMP && (operator) <(int)SF_START)
enum DATA_TYPES {
INTGR, CMPLX
};
enum PLOT_TYPE {
FUNC, DATA, FUNC3D, DATA3D
};
/*XXX - JG */
enum PLOT_STYLE {
LINES, POINTSTYLE, IMPULSES, LINESPOINTS, DOTS, ERRORBARS, BOXES, BOXERROR, STEPS
};
enum JUSTIFY {
LEFT, CENTRE, RIGHT
};
#if !(defined(ATARI)&&defined(__GNUC__)&&defined(_MATH_H)) /* FF's math.h has the type already */
struct cmplx {
double real, imag;
};
#endif
struct value {
enum DATA_TYPES type;
union {
int int_val;
struct cmplx cmplx_val;
} v;
};
struct lexical_unit { /* produced by scanner */
TBOOLEAN is_token; /* true if token, false if a value */
struct value l_val;
int start_index; /* index of first char in token */
int length; /* length of token in chars */
};
struct ft_entry { /* standard/internal function table entry */
char *f_name; /* pointer to name of this function */
FUNC_PTR func; /* address of function to call */
};
struct udft_entry { /* user-defined function table entry */
struct udft_entry *next_udf; /* pointer to next udf in linked list */
char udf_name[MAX_ID_LEN+1]; /* name of this function entry */
struct at_type *at; /* pointer to action table to execute */
char *definition; /* definition of function as typed */
struct value dummy_values[MAX_NUM_VAR]; /* current value of dummy variables */
};
struct udvt_entry { /* user-defined value table entry */
struct udvt_entry *next_udv; /* pointer to next value in linked list */
char udv_name[MAX_ID_LEN+1]; /* name of this value entry */
TBOOLEAN udv_undef; /* true if not defined yet */
struct value udv_value; /* value it has */
};
union argument { /* p-code argument */
int j_arg; /* offset for jump */
struct value v_arg; /* constant value */
struct udvt_entry *udv_arg; /* pointer to dummy variable */
struct udft_entry *udf_arg; /* pointer to udf to execute */
};
struct at_entry { /* action table entry */
enum operators index; /* index of p-code function */
union argument arg;
};
struct at_type {
int a_count; /* count of entries in .actions[] */
struct at_entry actions[MAX_AT_LEN];
/* will usually be less than MAX_AT_LEN is malloc()'d copy */
};
/* Defines the type of a coordinate */
/* INRANGE and OUTRANGE points have an x,y point associated with them */
enum coord_type {
INRANGE, /* inside plot boundary */
OUTRANGE, /* outside plot boundary, but defined */
UNDEFINED /* not defined at all */
};
#if defined(MSDOS) || defined(_Windows)
typedef float coordval; /* memory is tight on PCs! */
#else
typedef double coordval;
#endif
struct coordinate {
enum coord_type type; /* see above */
coordval x, y, z;
coordval ylow, yhigh; /* ignored in 3d */
#if (defined(_Windows) && !defined(WIN32)) || (defined(MSDOS) && defined(__TURBOC__))
char pad[10]; /* pad to 32 byte boundary */
#endif
};
struct curve_points {
struct curve_points *next_cp; /* pointer to next plot in linked list */
enum PLOT_TYPE plot_type;
enum PLOT_STYLE plot_style;
char *title;
int line_type;
int point_type;
int p_max; /* how many points are allocated */
int p_count; /* count of points in points */
struct coordinate GPHUGE *points;
};
struct gnuplot_contours {
struct gnuplot_contours *next;
struct coordinate GPHUGE *coords;
char isNewLevel;
char label[12];
int num_pts;
};
struct iso_curve {
struct iso_curve *next;
int p_max; /* how many points are allocated */
int p_count; /* count of points in points */
struct coordinate GPHUGE *points;
};
struct surface_points {
struct surface_points *next_sp; /* pointer to next plot in linked list */
enum PLOT_TYPE plot_type;
enum PLOT_STYLE plot_style;
char *title;
int line_type;
int point_type;
int has_grid_topology;
int num_iso_read; /* Data files only - num of isolines read from file. */
struct gnuplot_contours *contours; /* Not NULL If have contours. */
struct iso_curve *iso_crvs;
};
struct TERMENTRY {
char *name;
char *description;
unsigned int xmax,ymax,v_char,h_char,v_tic,h_tic;
FUNC_PTR options,init,reset,text,scale,graphics,move,vector,linetype,
put_text,text_angle,justify_text,point,arrow;
};
#ifdef _Windows
#define termentry TERMENTRY far
#else
#define termentry TERMENTRY
#endif
struct text_label {
struct text_label *next; /* pointer to next label in linked list */
int tag; /* identifies the label */
double x,y,z;
enum JUSTIFY pos;
char text[MAX_LINE_LEN+1];
};
struct arrow_def {
struct arrow_def *next; /* pointer to next arrow in linked list */
int tag; /* identifies the arrow */
double sx,sy,sz; /* start position */
double ex,ey,ez; /* end position */
TBOOLEAN head; /* arrow has a head or not */
};
/* Tic-mark labelling definition; see set xtics */
struct ticdef {
int type; /* one of three values below */
#define TIC_COMPUTED 1 /* default; gnuplot figures them */
#define TIC_SERIES 2 /* user-defined series */
#define TIC_USER 3 /* user-defined points */
#define TIC_MONTH 4 /* print out month names ((mo-1)%12)+1 */
#define TIC_DAY 5 /* print out day of week */
union {
struct { /* for TIC_SERIES */
double start, incr;
double end; /* ymax, if VERYLARGE */
} series;
struct ticmark *user; /* for TIC_USER */
} def;
};
/* Defines one ticmark for TIC_USER style.
* If label==NULL, the value is printed with the usual format string.
* else, it is used as the format string (note that it may be a constant
* string, like "high" or "low").
*/
struct ticmark {
double position; /* where on axis is this */
char *label; /* optional (format) string label */
struct ticmark *next; /* linked list */
};
/*
* SS$_NORMAL is "normal completion", STS$M_INHIB_MSG supresses
* printing a status message.
* SS$_ABORT is the general abort status code.
from: Martin Minow
decvax!minow
*/
#ifdef vms
#include <ssdef.h>
#include <stsdef.h>
#define IO_SUCCESS (SS$_NORMAL | STS$M_INHIB_MSG)
#define IO_ERROR SS$_ABORT
#endif /* vms */
#ifndef IO_SUCCESS /* DECUS or VMS C will have defined these already */
#define IO_SUCCESS 0
#endif
#ifndef IO_ERROR
#define IO_ERROR 1
#endif
/* Some key global variables */
extern TBOOLEAN screen_ok;
extern TBOOLEAN term_init;
extern TBOOLEAN undefined;
extern struct termentry term_tbl[];
extern char *alloc();
extern char GPFAR *gpfaralloc(); /* far versions */
extern char GPFAR *gpfarrealloc();
extern void gpfarfree();
/* allocating and managing curve_points structures */
extern struct curve_points *cp_alloc();
extern int cp_extend();
extern int cp_free();
/* allocating and managing surface_points structures */
extern struct surface_points *sp_alloc();
extern int sp_replace();
extern int sp_free();
/* allocating and managing is_curve structures */
extern struct iso_curve *iso_alloc();
extern int iso_extend();
extern int iso_free();
/* Windows needs to redefine stdin/stdout functions */
#ifdef _Windows
#include "win/wtext.h"
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.