[1844] | 1 | /*[
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| 2 | * Copyright 2000 Thomas Williams, Colin Kelley
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| 3 | *
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| 4 | * Permission to use, copy, and distribute this software and its
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| 5 | * documentation for any purpose with or without fee is hereby granted,
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| 6 | * provided that the above copyright notice appear in all copies and
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| 7 | * that both that copyright notice and this permission notice appear
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| 8 | * in supporting documentation.
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| 9 | *
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| 10 | * Permission to modify the software is granted, but not the right to
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| 11 | * distribute the complete modified source code. Modifications are to
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| 12 | * be distributed as patches to the released version. Permission to
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| 13 | * distribute binaries produced by compiling modified sources is granted,
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| 14 | * provided you
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| 15 | * 1. distribute the corresponding source modifications from the
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| 16 | * released version in the form of a patch file along with the binaries,
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| 17 | * 2. add special version identification to distinguish your version
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| 18 | * in addition to the base release version number,
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| 19 | * 3. provide your name and address as the primary contact for the
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| 20 | * support of your modified version, and
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| 21 | * 4. retain our contact information in regard to use of the base
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| 22 | * software.
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| 23 | * Permission to distribute the released version of the source code along
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| 24 | * with corresponding source modifications in the form of a patch file is
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| 25 | * granted with same provisions 2 through 4 for binary distributions.
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| 26 | *
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| 27 | * This software is provided "as is" without express or implied warranty
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| 28 | * to the extent permitted by applicable law.
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| 29 | ]*/
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| 30 |
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| 31 | #ifndef GNUPLOT_AXIS_H
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| 32 | #define GNUPLOT_AXIS_H
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| 33 |
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| 34 | #include "gpc_misc.h"
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| 35 | #include <stdio.h>
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| 36 | /*#include "gp_types.h" */ /* for TBOOLEAN */
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| 37 |
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| 38 | /*#include "gadgets.h"*/
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| 39 | /*#include "parse.h" */ /* for const_express() */
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| 40 | /*#include "tables.h" */ /* for the axis name parse table */
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| 41 | /*#include "term_api.h" */ /* for lp_style_type */
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| 42 | /*#include "util.h" */ /* for int_error() */
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| 43 | /****/
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| 44 |
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| 45 | /* typedefs / #defines */
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| 46 | #ifndef TRUE
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| 47 | #define TRUE -1
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| 48 | #define FALSE 0
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| 49 | #endif
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| 50 |
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| 51 | /* give some names to some array elements used in command.c and grap*.c
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| 52 | * maybe one day the relevant items in setshow will also be stored
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| 53 | * in arrays.
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| 54 | *
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| 55 | * Always keep the following conditions alive:
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| 56 | * SECOND_X_AXIS = FIRST_X_AXIS + SECOND_AXES
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| 57 | * FIRST_X_AXIS & SECOND_AXES == 0
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| 58 | */
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| 59 |
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| 60 | typedef enum AXIS_INDEX {
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| 61 | #define FIRST_AXES 0
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| 62 | FIRST_Z_AXIS,
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| 63 | FIRST_Y_AXIS,
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| 64 | FIRST_X_AXIS,
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| 65 | T_AXIS, /* fill gap */
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| 66 | #define SECOND_AXES 4
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| 67 | SECOND_Z_AXIS, /* not used, yet */
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| 68 | SECOND_Y_AXIS,
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| 69 | SECOND_X_AXIS,
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| 70 | R_AXIS, /* never used ? */
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| 71 | U_AXIS, /* dito */
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| 72 | V_AXIS /* dito */
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| 73 | #ifdef PM3D
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| 74 | ,COLOR_AXIS
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| 75 | #endif
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| 76 | } AXIS_INDEX ;
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| 77 |
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| 78 | #ifdef PM3D
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| 79 | # define AXIS_ARRAY_SIZE 11
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| 80 | #else
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| 81 | # define AXIS_ARRAY_SIZE 10
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| 82 | #endif
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| 83 |
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| 84 |
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| 85 | /* What kind of ticmarking is wanted? */
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| 86 | typedef enum en_ticseries_type {
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| 87 | TIC_COMPUTED=1, /* default; gnuplot figures them */
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| 88 | TIC_SERIES, /* user-defined series */
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| 89 | TIC_USER, /* user-defined points */
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| 90 | TIC_MONTH, /* print out month names ((mo-1)%12)+1 */
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| 91 | TIC_DAY /* print out day of week */
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| 92 | } t_ticseries_type;
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| 93 |
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| 94 | /* Defines one ticmark for TIC_USER style.
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| 95 | * If label==NULL, the value is printed with the usual format string.
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| 96 | * else, it is used as the format string (note that it may be a constant
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| 97 | * string, like "high" or "low").
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| 98 | */
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| 99 | typedef struct ticmark {
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| 100 | double position; /* where on axis is this */
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| 101 | char *label; /* optional (format) string label */
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| 102 | struct ticmark *next; /* linked list */
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| 103 | } ticmark;
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| 104 |
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| 105 | /* Tic-mark labelling definition; see set xtics */
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| 106 | typedef struct ticdef {
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| 107 | t_ticseries_type type;
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| 108 | union {
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| 109 | struct ticmark *user; /* for TIC_USER */
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| 110 | struct { /* for TIC_SERIES */
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| 111 | double start, incr;
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| 112 | double end; /* ymax, if VERYLARGE */
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| 113 | } series;
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| 114 | } def;
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| 115 | } t_ticdef;
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| 116 |
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| 117 | /* we want two auto modes for minitics - default where minitics are
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| 118 | * auto for log/time and off for linear, and auto where auto for all
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| 119 | * graphs I've done them in this order so that logscale-mode can
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| 120 | * simply test bit 0 to see if it must do the minitics automatically.
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| 121 | * similarly, conventional plot can test bit 1 to see if minitics are
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| 122 | * required */
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| 123 | enum en_minitics_status {
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| 124 | MINI_OFF,
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| 125 | MINI_DEFAULT,
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| 126 | MINI_USER,
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| 127 | MINI_AUTO
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| 128 | };
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| 129 |
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| 130 | /* Function pointer type for callback functions doing operations for a
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| 131 | * single ticmark */
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| 132 | /*typedef void (*tic_callback) __PROTO((AXIS_INDEX, double, char *, struct lp_style_type ));*/
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| 133 |
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| 134 | /* Values to put in the axis_tics[] variables that decides where the
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| 135 | * ticmarks should be drawn: not at all, on one or both plot borders,
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| 136 | * or the zeroaxes. These look like a series of values, but TICS_MASK
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| 137 | * shows that they're actually bit masks --> don't turn into an enum
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| 138 | * */
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| 139 | #define NO_TICS 0
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| 140 | #define TICS_ON_BORDER 1
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| 141 | #define TICS_ON_AXIS 2
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| 142 | #define TICS_MASK 3
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| 143 | #define TICS_MIRROR 4
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| 144 |
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| 145 |
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| 146 | /* Need to allow user to choose grid at first and/or second axes tics.
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| 147 | * Also want to let user choose circles at x or y tics for polar grid.
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| 148 | * Also want to allow user rectangular grid for polar plot or polar
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| 149 | * grid for parametric plot. So just go for full configurability.
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| 150 | * These are bitmasks
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| 151 | */
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| 152 | #define GRID_OFF 0
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| 153 | #define GRID_X (1<<0)
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| 154 | #define GRID_Y (1<<1)
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| 155 | #define GRID_Z (1<<2)
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| 156 | #define GRID_X2 (1<<3)
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| 157 | #define GRID_Y2 (1<<4)
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| 158 | #define GRID_MX (1<<5)
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| 159 | #define GRID_MY (1<<6)
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| 160 | #define GRID_MZ (1<<7)
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| 161 | #define GRID_MX2 (1<<8)
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| 162 | #define GRID_MY2 (1<<9)
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| 163 | /* GRID_{M}CB only for PM3D, but defined always for source code readability */
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| 164 | #define GRID_CB (1<<10)
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| 165 | #define GRID_MCB (1<<11)
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| 166 |
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| 167 | /* HBB 20010610: new type for storing autoscale activity. Effectively
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| 168 | * two booleans (bits) in a single variable, so I'm using an enum with
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| 169 | * all 4 possible bit masks given readable names. */
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| 170 | typedef enum e_autoscale {
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| 171 | AUTOSCALE_NONE = 0,
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| 172 | AUTOSCALE_MIN = 1<<0,
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| 173 | AUTOSCALE_MAX = 1<<1,
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| 174 | AUTOSCALE_BOTH = (1<<0 | 1 << 1),
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| 175 | AUTOSCALE_FIXMIN = 1<<2,
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| 176 | AUTOSCALE_FIXMAX = 1<<3
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| 177 | } t_autoscale;
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| 178 |
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| 179 |
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| 180 | /* HBB 20000725: gather all per-axis variables into a struct, and set up
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| 181 | * a single large array of such structs */
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| 182 | /* FIXME 20000725: collect some of those various TBOOLEAN fields into
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| 183 | * a larger int (or -- shudder -- a bitfield?) */
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| 184 | typedef struct axis {
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| 185 | /* range of this axis */
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| 186 | t_autoscale autoscale; /* Which end(s) are autoscaled? */
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| 187 | t_autoscale set_autoscale; /* what does 'set' think autoscale to be? */
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| 188 | int range_flags; /* flag bits about autoscale/writeback: */
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| 189 | /* write auto-ed ranges back to variables for autoscale */
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| 190 | #define RANGE_WRITEBACK 1
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| 191 | /* allow auto and reversed ranges */
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| 192 | #define RANGE_REVERSE 2
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| 193 | TBOOLEAN reverse_range; /* range [high:low] silently reverted? */
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| 194 | double min; /* 'transient' axis extremal values */
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| 195 | double max;
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| 196 | double set_min; /* set/show 'permanent' values */
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| 197 | double set_max;
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| 198 | double writeback_min; /* ULIG's writeback implementation */
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| 199 | double writeback_max;
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| 200 |
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| 201 | /* output-related quantities */
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| 202 | int term_lower; /* low and high end of the axis on output, */
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| 203 | int term_upper; /* ... (in terminal coordinates)*/
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| 204 | double term_scale; /* scale factor: plot --> term coords */
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| 205 | unsigned int term_zero; /* position of zero axis */
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| 206 |
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| 207 | /* log axis control */
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| 208 | TBOOLEAN log; /* log axis stuff: flag "islog?" */
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| 209 | double base; /* logarithm base value */
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| 210 | double log_base; /* ln(base), for easier computations */
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| 211 |
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| 212 | /* time/date axis control */
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| 213 | TBOOLEAN is_timedata; /* is this a time/date axis? */
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| 214 | TBOOLEAN format_is_numeric; /* format string looks like numeric??? */
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| 215 | char timefmt[MAX_ID_LEN+1]; /* format string for input */
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| 216 | char formatstring[MAX_ID_LEN+1];
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| 217 | /* the format string for output */
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| 218 |
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| 219 | /* ticmark control variables */
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| 220 | int ticmode; /* tics on border/axis? mirrored? */
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| 221 | struct ticdef ticdef; /* tic series definition */
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| 222 | TBOOLEAN tic_rotate; /* ticmarks rotated (vertical text)? */
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| 223 | int minitics; /* minor tic mode (none/auto/user)? */
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| 224 | double mtic_freq; /* minitic stepsize */
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| 225 |
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| 226 | /* other miscellaneous fields */
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| 227 | label_struct label; /* label string and position offsets */
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| 228 | /*lp_style_type zeroaxis;*/ /* drawing style for zeroaxis, if any */
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| 229 | } AXIS;
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| 230 |
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| 231 | #define DEFAULT_AXIS_TICDEF {TIC_COMPUTED, {NULL} }
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| 232 | #ifdef PM3D
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| 233 | # define DEFAULT_AXIS_ZEROAXIS {0, -3, 0, 1.0, 1.0, 0}
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| 234 | #else
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| 235 | # define DEFAULT_AXIS_ZEROAXIS {0, -3, 0, 1.0, 1.0}
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| 236 | #endif
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| 237 | #define DEFAULT_AXIS_STRUCT { \
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| 238 | AUTOSCALE_BOTH, AUTOSCALE_BOTH, /* auto, set_auto */ \
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| 239 | 0, FALSE, /* range_flags, rev_range */ \
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| 240 | -10.0, 10.0, /* 3 pairs of min/max */ \
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| 241 | -10.0, 10.0, \
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| 242 | -10.0, 10.0, \
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| 243 | 0, 0, 0, 0, /* terminal dependents */ \
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| 244 | FALSE, 0.0, 0.0, /* log, base, log(base) */ \
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| 245 | 0, 1, /* is_timedata, format_numeric */ \
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| 246 | DEF_FORMAT, TIMEFMT, /* output format, timefmt */ \
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| 247 | NO_TICS, /* tic output positions (border, mirror) */ \
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| 248 | DEFAULT_AXIS_TICDEF, /* tic series definition */ \
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| 249 | FALSE, MINI_DEFAULT, 10, /* tic_rotate, minitics, mtic_freq */ \
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| 250 | EMPTY_LABELSTRUCT/**,**/ /* axis label */ \
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| 251 | /**DEFAULT_AXIS_ZEROAXIS**/} /* zeroaxis line style */
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| 252 |
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| 253 | /* Table of default behaviours --- a subset of the struct above. Only
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| 254 | * those fields are present that differ from axis to axis. */
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| 255 | typedef struct axis_defaults {
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| 256 | double min; /* default axis endpoints */
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| 257 | double max;
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| 258 | char name[4]; /* axis name, like in "x2" or "t" */
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| 259 | int ticmode; /* tics on border/axis? mirrored? */
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| 260 | } AXIS_DEFAULTS;
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| 261 |
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| 262 |
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| 263 |
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| 264 | /* global variables in axis.c */
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| 265 |
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| 266 | extern AXIS axis_array[AXIS_ARRAY_SIZE];
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| 267 | extern AXIS_DEFAULTS axis_defaults[AXIS_ARRAY_SIZE];
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| 268 |
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| 269 | /* A parsing table for mapping axis names into axis indices. For use
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| 270 | * by the set/show machinery, mainly */
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[2893] | 271 | /* NE SERT A RIEN ET DE TOUTE FACON PAS DEFINI (rz+cmv 100106)
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[1844] | 272 | extern struct gen_table axisname_tbl[AXIS_ARRAY_SIZE+1];
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[2893] | 273 | */
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[1844] | 274 |
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| 275 | extern const struct ticdef default_axis_ticdef;
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| 276 |
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| 277 | extern double ticscale; /* scale factor for tic marks (was (0..1])*/
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| 278 | extern double miniticscale; /* and for minitics */
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| 279 | extern TBOOLEAN tic_in; /* tics to be drawn inward? */
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| 280 |
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| 281 |
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| 282 | /* default format for tic mark labels */
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| 283 | #define DEF_FORMAT "% g"
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| 284 |
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| 285 | /* default parse timedata string */
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| 286 | #define TIMEFMT "%d/%m/%y,%H:%M"
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| 287 |
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| 288 | /* axis labels */
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| 289 | extern const label_struct default_axis_label;
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| 290 |
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| 291 | /* zeroaxis linetype (flag type==-3 if none wanted) */
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| 292 |
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| 293 | /***extern const lp_style_type default_axis_zeroaxis;***/
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| 294 |
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| 295 | /* grid drawing control variables */
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| 296 | extern int grid_selection;
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| 297 | /***extern const struct lp_style_type default_grid_lp;***/ /* default for 'unset' */
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| 298 | /***extern struct lp_style_type grid_lp;***/ /* linestyle for major grid lines */
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| 299 | /***extern struct lp_style_type mgrid_lp;***/ /* linestyle for minor grid lines */
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| 300 | /***extern double polar_grid_angle;***/ /* angle step in polar grid in radians */
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| 301 |
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| 302 | /* global variables for communication with the tic callback functions */
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| 303 |
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| 304 | extern int tic_start, tic_direction, tic_text,
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| 305 | rotate_tics, tic_hjust, tic_vjust, tic_mirror;
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| 306 |
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| 307 | /* axes being used by the current plot */
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| 308 | extern AXIS_INDEX x_axis, y_axis, z_axis;
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| 309 | /* macros to reduce code clutter caused by the array notation, mainly
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| 310 | * in graphics.c and fit.c */
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| 311 | #define X_AXIS axis_array[x_axis]
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| 312 | #define Y_AXIS axis_array[y_axis]
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| 313 | #define Z_AXIS axis_array[z_axis]
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| 314 | #ifdef PM3D
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| 315 | #define CB_AXIS axis_array[COLOR_AXIS]
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| 316 | #endif
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| 317 |
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| 318 | /* -------- macros using these variables: */
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| 319 |
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| 320 | /* Macros to map from user to terminal coordinates and back */
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| 321 | #define AXIS_MAP(axis, variable) \
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| 322 | (int) ((axis_array[axis].term_lower) \
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| 323 | + ((variable) - axis_array[axis].min) \
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| 324 | * axis_array[axis].term_scale + 0.5)
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| 325 | #define AXIS_MAPBACK(axis, pos) \
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| 326 | (((double)(pos)-axis_array[axis].term_lower)/axis_array[axis].term_scale \
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| 327 | + axis_array[axis].min)
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| 328 |
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| 329 | /* these are the old names for these: */
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| 330 | #define map_x(x) AXIS_MAP(x_axis, x)
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| 331 | #define map_y(y) AXIS_MAP(y_axis, y)
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| 332 |
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| 333 | #define AXIS_SETSCALE(axis, out_low, out_high) \
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| 334 | axis_array[axis].term_scale = ((out_high) - (out_low)) \
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| 335 | / (axis_array[axis].max - axis_array[axis].min)
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| 336 |
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| 337 | /* write current min/max_array contents into the set/show status
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| 338 | * variables */
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| 339 | #define AXIS_WRITEBACK(axis) \
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| 340 | do { \
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| 341 | AXIS *this = axis_array + axis; \
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| 342 | \
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| 343 | if (this->range_flags & RANGE_WRITEBACK) { \
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| 344 | if (this->autoscale & AUTOSCALE_MIN) \
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| 345 | this->set_min = this->min; \
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| 346 | if (this->autoscale & AUTOSCALE_MAX) \
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| 347 | this->set_max = this->max; \
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| 348 | } \
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| 349 | } while(0)
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| 350 |
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| 351 | /* HBB 20000430: New macros, logarithmize a value into a stored
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| 352 | * coordinate*/
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| 353 | #define AXIS_DO_LOG(axis,value) (log(value) / axis_array[axis].log_base)
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| 354 | #define AXIS_UNDO_LOG(axis,value) exp((value) * axis_array[axis].log_base)
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| 355 |
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| 356 | /* HBB 20000430: same, but these test if the axis is log, first: */
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| 357 | #define AXIS_LOG_VALUE(axis,value) \
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| 358 | (axis_array[axis].log ? AXIS_DO_LOG(axis,value) : (value))
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| 359 | #define AXIS_DE_LOG_VALUE(axis,coordinate) \
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| 360 | (axis_array[axis].log ? AXIS_UNDO_LOG(axis,coordinate): (coordinate))
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| 361 |
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| 362 |
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| 363 | /* copy scalar data to arrays. The difference between 3D and 2D
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| 364 | * versions is: dont know we have to support ranges [10:-10] - lets
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| 365 | * reverse it for now, then fix it at the end. */
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| 366 | /* FIXME HBB 20000426: unknown if this distinction makes any sense... */
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| 367 | #define AXIS_INIT3D(axis, islog_override, infinite) \
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| 368 | do { \
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| 369 | AXIS *this = axis_array + axis; \
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| 370 | \
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| 371 | if ((this->autoscale = this->set_autoscale) == AUTOSCALE_NONE \
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| 372 | && this->set_max < this->set_min) { \
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| 373 | this->min = this->set_max; \
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| 374 | this->max = this->set_min; \
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| 375 | /* we will fix later */ \
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| 376 | } else { \
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| 377 | this->min = (infinite && (this->set_autoscale & AUTOSCALE_MIN)) \
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| 378 | ? VERYLARGE : this->set_min; \
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| 379 | this->max = (infinite && (this->set_autoscale & AUTOSCALE_MAX)) \
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| 380 | ? -VERYLARGE : this->set_max; \
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| 381 | } \
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| 382 | if (islog_override) { \
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| 383 | this->log = 0; \
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| 384 | this->base = 1; \
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| 385 | this->log_base = 0; \
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| 386 | } else { \
|
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| 387 | this->log_base = this->log ? log(this->base) : 0; \
|
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| 388 | } \
|
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| 389 | } while(0)
|
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| 390 |
|
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| 391 | #define AXIS_INIT2D(axis, infinite) \
|
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| 392 | do { \
|
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| 393 | AXIS *this = axis_array + axis; \
|
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| 394 | \
|
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| 395 | this->autoscale = this->set_autoscale; \
|
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| 396 | this->min = (infinite && (this->set_autoscale & AUTOSCALE_MIN)) \
|
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| 397 | ? VERYLARGE : this->set_min; \
|
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| 398 | this->max = (infinite && (this->set_autoscale & AUTOSCALE_MAX)) \
|
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| 399 | ? -VERYLARGE : this->set_max; \
|
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| 400 | this->log_base = this->log ? log(this->base) : 0; \
|
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| 401 | } while(0)
|
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| 402 |
|
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| 403 | /* handle reversed ranges */
|
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| 404 | #define CHECK_REVERSE(axis) \
|
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| 405 | do { \
|
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| 406 | AXIS *this = axis_array + axis; \
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| 407 | \
|
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| 408 | if ((this->autoscale == AUTOSCALE_NONE) \
|
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| 409 | && (this->max < this->min) \
|
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| 410 | ) { \
|
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| 411 | double temp = this->min; \
|
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| 412 | this->min = this->max; \
|
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| 413 | this->max = temp; \
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| 414 | this->reverse_range = 1; \
|
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| 415 | } else \
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| 416 | this->reverse_range = (this->range_flags & RANGE_REVERSE); \
|
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| 417 | } while(0)
|
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| 418 |
|
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| 419 | /* HBB 20000725: new macro, built upon ULIG's SAVE_WRITEBACK(axis),
|
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| 420 | * but easier to use. Code like this occured twice, in plot2d and
|
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| 421 | * plot3d: */
|
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| 422 | #define SAVE_WRITEBACK_ALL_AXES \
|
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| 423 | do { \
|
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| 424 | AXIS_INDEX axis; \
|
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| 425 | \
|
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| 426 | for (axis = 0; axis < AXIS_ARRAY_SIZE; axis++) \
|
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| 427 | if(axis_array[axis].range_flags & RANGE_WRITEBACK) { \
|
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| 428 | set_writeback_min(axis); \
|
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| 429 | set_writeback_max(axis); \
|
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| 430 | } \
|
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| 431 | } while(0)
|
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| 432 |
|
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| 433 | /* get optional [min:max] */
|
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| 434 | #define PARSE_RANGE(axis) \
|
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| 435 | do { \
|
---|
| 436 | if (equals(c_token, "[")) { \
|
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| 437 | c_token++; \
|
---|
| 438 | axis_array[axis].autoscale = \
|
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| 439 | load_range(axis, &axis_array[axis].min, &axis_array[axis].max, \
|
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| 440 | axis_array[axis].autoscale); \
|
---|
| 441 | if (!equals(c_token, "]")) \
|
---|
| 442 | int_error(c_token, "']' expected"); \
|
---|
| 443 | c_token++; \
|
---|
| 444 | } \
|
---|
| 445 | } while (0)
|
---|
| 446 |
|
---|
| 447 | /* HBB 20000430: new macro, like PARSE_RANGE, but for named ranges as
|
---|
| 448 | * in 'plot [phi=3.5:7] sin(phi)' */
|
---|
| 449 | #define PARSE_NAMED_RANGE(axis, dummy_token) \
|
---|
| 450 | do { \
|
---|
| 451 | if (equals(c_token, "[")) { \
|
---|
| 452 | c_token++; \
|
---|
| 453 | if (isletter(c_token)) { \
|
---|
| 454 | if (equals(c_token + 1, "=")) { \
|
---|
| 455 | dummy_token = c_token; \
|
---|
| 456 | c_token += 2; \
|
---|
| 457 | } \
|
---|
| 458 | /* oops; probably an expression with a variable: act \
|
---|
| 459 | * as if no variable name had been seen, by \
|
---|
| 460 | * fallthrough */ \
|
---|
| 461 | } \
|
---|
| 462 | axis_array[axis].autoscale = load_range(axis, &axis_array[axis].min, \
|
---|
| 463 | &axis_array[axis].max, \
|
---|
| 464 | axis_array[axis].autoscale); \
|
---|
| 465 | if (!equals(c_token, "]")) \
|
---|
| 466 | int_error(c_token, "']' expected"); \
|
---|
| 467 | c_token++; \
|
---|
| 468 | } /* first '[' */ \
|
---|
| 469 | } while (0)
|
---|
| 470 |
|
---|
| 471 | /* parse a position of the form
|
---|
| 472 | * [coords] x, [coords] y {,[coords] z}
|
---|
| 473 | * where coords is one of first,second.graph,screen
|
---|
| 474 | * if first or second, we need to take axis_is_timedata into account
|
---|
| 475 | */
|
---|
| 476 | #define GET_NUMBER_OR_TIME(store,axes,axis) \
|
---|
| 477 | do { \
|
---|
| 478 | if (((axes) >= 0) && (axis_array[(axes)+(axis)].is_timedata) \
|
---|
| 479 | && isstring(c_token)) { \
|
---|
| 480 | char ss[80]; \
|
---|
| 481 | struct tm tm; \
|
---|
| 482 | quote_str(ss,c_token, 80); \
|
---|
| 483 | ++c_token; \
|
---|
| 484 | if (gstrptime(ss,axis_array[axis].timefmt,&tm)) \
|
---|
| 485 | (store) = (double) gtimegm(&tm); \
|
---|
| 486 | } else { \
|
---|
| 487 | struct value value; \
|
---|
| 488 | (store) = real(const_express(&value)); \
|
---|
| 489 | } \
|
---|
| 490 | } while(0)
|
---|
| 491 |
|
---|
| 492 | /* This is one is very similar to GET_NUMBER_OR_TIME, but has slightly
|
---|
| 493 | * different usage: it writes out '0' in case of inparsable time data,
|
---|
| 494 | * and it's used when the target axis is fixed without a 'first' or
|
---|
| 495 | * 'second' keyword in front of it. */
|
---|
| 496 | #define GET_NUM_OR_TIME(store,axis) \
|
---|
| 497 | do { \
|
---|
| 498 | (store) = 0; \
|
---|
| 499 | GET_NUMBER_OR_TIME(store, FIRST_AXES, axis); \
|
---|
| 500 | } while (0);
|
---|
| 501 |
|
---|
| 502 | /* store VALUE or log(VALUE) in STORE, set TYPE as appropriate
|
---|
| 503 | * Do OUT_ACTION or UNDEF_ACTION as appropriate
|
---|
| 504 | * adjust range provided type is INRANGE (ie dont adjust y if x is outrange
|
---|
| 505 | * VALUE must not be same as STORE
|
---|
| 506 | */
|
---|
| 507 |
|
---|
| 508 | #define STORE_WITH_LOG_AND_UPDATE_RANGE(STORE, VALUE, TYPE, AXIS, \
|
---|
| 509 | OUT_ACTION, UNDEF_ACTION) \
|
---|
| 510 | do { \
|
---|
| 511 | /* HBB 20000726: new check, to avoid crashes with axis index -1 */ \
|
---|
| 512 | if (AXIS==-1) \
|
---|
| 513 | break; \
|
---|
| 514 | if (axis_array[AXIS].log) { \
|
---|
| 515 | if (VALUE<0.0) { \
|
---|
| 516 | TYPE = UNDEFINED; \
|
---|
| 517 | UNDEF_ACTION; \
|
---|
| 518 | break; \
|
---|
| 519 | } else if (VALUE == 0.0) { \
|
---|
| 520 | STORE = -VERYLARGE; \
|
---|
| 521 | TYPE = OUTRANGE; \
|
---|
| 522 | OUT_ACTION; \
|
---|
| 523 | break; \
|
---|
| 524 | } else { \
|
---|
| 525 | STORE = AXIS_DO_LOG(AXIS,VALUE); \
|
---|
| 526 | } \
|
---|
| 527 | } else \
|
---|
| 528 | STORE = VALUE; \
|
---|
| 529 | if (TYPE != INRANGE) \
|
---|
| 530 | break; /* don't set y range if x is outrange, for example */ \
|
---|
| 531 | if ((int)AXIS < 0) \
|
---|
| 532 | break; /* HBB 20000507: don't check range if not a coordinate */ \
|
---|
| 533 | if ( VALUE<axis_array[AXIS].min ) { \
|
---|
| 534 | if (axis_array[AXIS].autoscale & AUTOSCALE_MIN) \
|
---|
| 535 | axis_array[AXIS].min = VALUE; \
|
---|
| 536 | else { \
|
---|
| 537 | TYPE = OUTRANGE; \
|
---|
| 538 | OUT_ACTION; \
|
---|
| 539 | break; \
|
---|
| 540 | } \
|
---|
| 541 | } \
|
---|
| 542 | if ( VALUE>axis_array[AXIS].max ) { \
|
---|
| 543 | if (axis_array[AXIS].autoscale & AUTOSCALE_MAX) \
|
---|
| 544 | axis_array[AXIS].max = VALUE; \
|
---|
| 545 | else { \
|
---|
| 546 | TYPE = OUTRANGE; \
|
---|
| 547 | OUT_ACTION; \
|
---|
| 548 | } \
|
---|
| 549 | } \
|
---|
| 550 | } while(0)
|
---|
| 551 |
|
---|
| 552 | /* use this instead empty macro arguments to work around NeXT cpp bug */
|
---|
| 553 | /* if this fails on any system, we might use ((void)0) */
|
---|
| 554 | #define NOOP /* */
|
---|
| 555 |
|
---|
| 556 | /* HBB 20000506: new macro, initializes one variable to the same
|
---|
| 557 | * value, for all axes. */
|
---|
| 558 | #define INIT_AXIS_ARRAY(field, value) \
|
---|
| 559 | do { \
|
---|
| 560 | int tmp; \
|
---|
| 561 | for (tmp=0; tmp<AXIS_ARRAY_SIZE; tmp++) \
|
---|
| 562 | axis_array[tmp].field=(value); \
|
---|
| 563 | } while(0)
|
---|
| 564 |
|
---|
| 565 | /* HBB 20000506: new macro to automatically build intializer lists
|
---|
| 566 | * for arrays of AXIS_ARRAY_SIZE equal elements */
|
---|
| 567 | #ifdef PM3D
|
---|
| 568 | #define AXIS_ARRAY_INITIALIZER(value) { \
|
---|
| 569 | value, value, value, value, value, \
|
---|
| 570 | value, value, value, value, value /*, value*/ }
|
---|
| 571 | #else
|
---|
| 572 | #define AXIS_ARRAY_INITIALIZER(value) { \
|
---|
| 573 | value, value, value, value, value, \
|
---|
| 574 | value, value, value, value, value }
|
---|
| 575 | #endif
|
---|
| 576 |
|
---|
| 577 |
|
---|
| 578 | /* used by set.c */
|
---|
| 579 | #define SET_DEFFORMAT(axis, flag_array) \
|
---|
| 580 | if (flag_array[axis]) { \
|
---|
| 581 | (void) strcpy(axis_array[axis].formatstring,DEF_FORMAT); \
|
---|
| 582 | axis_array[axis].format_is_numeric = 1; \
|
---|
| 583 | }
|
---|
| 584 |
|
---|
| 585 |
|
---|
| 586 | /* 'roundoff' check tolerance: less than one hundredth of a tic mark */
|
---|
| 587 | #define SIGNIF (0.01)
|
---|
| 588 | /* (DFK) Watch for cancellation error near zero on axes labels */
|
---|
| 589 | /* FIXME HBB 20000521: these seem not to be used much, anywhere... */
|
---|
| 590 | #define CheckZero(x,tic) (fabs(x) < ((tic) * SIGNIF) ? 0.0 : (x))
|
---|
| 591 | #define NearlyEqual(x,y,tic) (fabs((x)-(y)) < ((tic) * SIGNIF))
|
---|
| 592 |
|
---|
| 593 |
|
---|
| 594 |
|
---|
| 595 | /* ------------ functions exported by axis.c */
|
---|
| 596 | /*t_autoscale load_range __PROTO((AXIS_INDEX, double *, double *, t_autoscale));*/
|
---|
| 597 | void axis_unlog_interval(AXIS_INDEX, double *, double *, TBOOLEAN);
|
---|
| 598 | /*void axis_revert_and_unlog_range __PROTO((AXIS_INDEX));*/
|
---|
| 599 | /*double axis_log_value_checked __PROTO((AXIS_INDEX, double, const char *));*/
|
---|
| 600 | /*void axis_checked_extend_empty_range __PROTO((AXIS_INDEX, const char *mesg));*/
|
---|
| 601 | /*void timetic_format __PROTO((AXIS_INDEX, double, double));*/
|
---|
| 602 | double set_tic(double, int);
|
---|
| 603 | /*void setup_tics __PROTO((AXIS_INDEX, int));*/
|
---|
| 604 | /*void gen_tics __PROTO((AXIS_INDEX, int, tic_callback));*/
|
---|
| 605 | /*void gprintf __PROTO((char *, size_t, char *, double, double));*/
|
---|
| 606 | /*void axis_output_tics __PROTO((AXIS_INDEX, int *, AXIS_INDEX, int, tic_callback));*/
|
---|
| 607 | /*void axis_set_graphical_range __PROTO((AXIS_INDEX, unsigned int lower, unsigned int upper));*/
|
---|
| 608 | /*TBOOLEAN axis_position_zeroaxis __PROTO((AXIS_INDEX));*/
|
---|
| 609 | /*void axis_draw_2d_zeroaxis __PROTO((AXIS_INDEX, AXIS_INDEX)); */
|
---|
| 610 |
|
---|
| 611 | /*double get_writeback_min __PROTO((AXIS_INDEX));*/
|
---|
| 612 | /*double get_writeback_max __PROTO((AXIS_INDEX));*/
|
---|
| 613 | /*void set_writeback_min __PROTO((AXIS_INDEX));*/
|
---|
| 614 | /*void set_writeback_max __PROTO((AXIS_INDEX));*/
|
---|
| 615 |
|
---|
| 616 | #endif /* GNUPLOT_AXIS_H */
|
---|