gnuplot-old/src/set.c at axis_branch_base · gnuplot/gnuplot-old · GitHub

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#ifndef lint

static char *RCSid() { return RCSid("$Id: set.c,v 1.35.2.7 2000/10/24 18:58:12 broeker Exp $"); }

#endif

/* GNUPLOT - set.c */

/*[

* 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 complete modified source code. Modifications are to

* be distributed as patches to the released version. Permission to

* distribute binaries produced by compiling modified sources is granted,

* provided you

* 1. distribute the corresponding source modifications from the

* released version in the form of a patch file along with the binaries,

* 2. add special version identification to distinguish your version

* in addition to the base release version number,

* 3. provide your name and address as the primary contact for the

* support of your modified version, and

* 4. retain our contact information in regard to use of the base

* software.

* Permission to distribute the released version of the source code along

* with corresponding source modifications in the form of a patch file is

* granted with same provisions 2 through 4 for binary distributions.

* This software is provided "as is" without express or implied warranty

* to the extent permitted by applicable law.

]*/

* 19 September 1992 Lawrence Crowl (crowl@cs.orst.edu)

* Added user-specified bases for log scaling.

#include "setshow.h"

#include "alloc.h"

#include "axis.h"

#include "command.h"

#include "contour.h"

#include "datafile.h"

#include "gp_time.h"

#include "hidden3d.h"

#include "misc.h"

#include "parse.h"

#include "plot.h"

#include "plot2d.h"

#include "plot3d.h"

#include "tables.h"

#include "term_api.h"

#include "util.h"

#include "variable.h"

#ifdef USE_MOUSE

# include "mouse.h"

#endif

#include <ctype.h> /* for isdigit() */

static void set_angles __PROTO((void));

static void set_arrow __PROTO((void));

static int assign_arrow_tag __PROTO((void));

static void set_autoscale __PROTO((void));

static void set_bars __PROTO((void));

static void set_border __PROTO((void));

static void set_boxwidth __PROTO((void));

static void set_clabel __PROTO((void));

static void set_clip __PROTO((void));

static void set_cntrparam __PROTO((void));

static void set_contour __PROTO((void));

static void set_dgrid3d __PROTO((void));

static void set_dummy __PROTO((void));

static void set_encoding __PROTO((void));

static void set_format __PROTO((void));

static void set_grid __PROTO((void));

static void set_hidden3d __PROTO((void));

#if defined(HAVE_LIBREADLINE) && defined(GNUPLOT_HISTORY)

static void set_historysize __PROTO((void));

#endif

static void set_isosamples __PROTO((void));

static void set_key __PROTO((void));

static void set_keytitle __PROTO((void));

static void set_label __PROTO((void));

static int assign_label_tag __PROTO((void));

static void set_loadpath __PROTO((void));

static void set_locale __PROTO((void));

static void set_logscale __PROTO((void));

static void set_mapping __PROTO((void));

static void set_bmargin __PROTO((void));

static void set_lmargin __PROTO((void));

static void set_rmargin __PROTO((void));

static void set_tmargin __PROTO((void));

static void set_missing __PROTO((void));

#ifdef USE_MOUSE

static void set_mouse __PROTO((void));

#endif

static void set_offsets __PROTO((void));

static void set_origin __PROTO((void));

static void set_output __PROTO((void));

static void set_parametric __PROTO((void));

static void set_pointsize __PROTO((void));

static void set_polar __PROTO((void));

static void set_samples __PROTO((void));

static void set_size __PROTO((void));

static void set_style __PROTO((void));

static void set_surface __PROTO((void));

static void set_terminal __PROTO((void));

static void set_termoptions __PROTO((void));

static void set_tics __PROTO((void));

static void set_ticscale __PROTO((void));

static void set_ticslevel __PROTO((void));

static void set_timefmt __PROTO((void));

static void set_timestamp __PROTO((void));

static void set_view __PROTO((void));

static void set_zero __PROTO((void));

static void set_timedata __PROTO((AXIS_INDEX));

static void set_range __PROTO((AXIS_INDEX));

static void set_zeroaxis __PROTO((AXIS_INDEX));

static void set_allzeroaxis __PROTO((void));

/******** Local functions ********/

static void get_position __PROTO((struct position * pos));

static void get_position_type __PROTO((enum position_type * type, int *axes));

static void set_xyzlabel __PROTO((label_struct * label));

static void load_tics __PROTO((AXIS_INDEX axis));

static void load_tic_user __PROTO((AXIS_INDEX axis));

static void free_marklist __PROTO((struct ticmark * list));

static void load_tic_series __PROTO((AXIS_INDEX axis));

static void load_offsets __PROTO((double *a, double *b, double *c, double *d));

static void set_linestyle __PROTO((void));

static int assign_linestyle_tag __PROTO((void));

static int looks_like_numeric __PROTO((char *));

static void reset_lp_properties __PROTO((struct lp_style_type *arg));

static int set_tic_prop __PROTO((AXIS_INDEX));

static char *fill_numbers_into_string __PROTO((char *pattern));

/* Backwards compatibility ... */

static void set_nolinestyle __PROTO((void));

/******** The 'set' command ********/

void

set_command()

{

static char GPFAR setmess[] =

"valid set options: [] = choose one, {} means optional\n\n\

\t'angles', 'arrow', 'autoscale', 'bars', 'border', 'boxwidth',\n\

\t'clabel', 'clip', 'cntrparam', 'contour', 'data style', 'dgrid3d',\n\

\t'dummy', 'encoding', 'format', 'function style', 'grid',\n\

\t'hidden3d', 'historysize', 'isosamples', 'key', 'label', 'linestyle',\n\

\t'locale', 'logscale', '[blrt]margin', 'mapping', 'missing', 'mouse',\n\

\t'multiplot', 'offsets', 'origin', 'output', 'parametric', 'pointsize',\n\

\t'polar', '[rtuv]range', 'samples', 'size', 'surface', 'terminal',\n\

\t'tics', 'ticscale', 'ticslevel', 'timestamp', 'timefmt',\n\

\t'title', 'view', '[xyz]{2}data', '[xyz]{2}label', '[xyz]{2}range',\n\

\t'{no}{m}[xyz]{2}tics', '[xyz]{2}[md]tics', '{[xyz]{2}}zeroaxis', 'zero'";

c_token++;

#ifdef BACKWARDS_COMPATIBLE

/* retain backwards compatibility to the old syntax for now

* Oh, such ugliness ...

if (almost_equals(c_token,"da$ta")) {

if (interactive)

int_warn(c_token, "deprecated syntax, use \"set style data\"");

if (!almost_equals(++c_token,"s$tyle"))

int_error(c_token,"expecting keyword 'style'");

else

data_style = get_style();

} else if (almost_equals(c_token,"fu$nction")) {

if (interactive)

int_warn(c_token, "deprecated syntax, use \"set style function\"");

if (!almost_equals(++c_token,"s$tyle"))

int_error(c_token,"expecting keyword 'style'");

else

func_style = get_style();

} else if (almost_equals(c_token,"li$nestyle") || equals(c_token, "ls" )) {

if (interactive)

int_warn(c_token, "deprecated syntax, use \"set style line\"");

c_token++;

set_linestyle();

} else if (almost_equals(c_token,"noli$nestyle") || equals(c_token, "nols" )) {

c_token++;

set_nolinestyle();

} else if (input_line[token[c_token].start_index] == 'n' &&

input_line[token[c_token].start_index+1] == 'o') {

if (interactive)

int_warn(c_token, "deprecated syntax, use \"unset\"");

token[c_token].start_index += 2;

token[c_token].length -= 2;

c_token--;

unset_command();

} else {

#endif /* BACKWARDS_COMPATIBLE */

switch(lookup_table(&set_tbl[0],c_token)) {

case S_ANGLES:

set_angles();

break;

case S_ARROW:

set_arrow();

break;

case S_AUTOSCALE:

set_autoscale();

break;

case S_BARS:

set_bars();

break;

case S_BORDER:

set_border();

break;

case S_BOXWIDTH:

set_boxwidth();

break;

case S_CLABEL:

set_clabel();

break;

case S_CLIP:

set_clip();

break;

case S_CNTRPARAM:

set_cntrparam();

break;

case S_CONTOUR:

set_contour();

break;

case S_DGRID3D:

set_dgrid3d();

break;

case S_DUMMY:

set_dummy();

break;

case S_ENCODING:

set_encoding();

break;

case S_FORMAT:

set_format();

break;

case S_GRID:

set_grid();

break;

case S_HIDDEN3D:

set_hidden3d();

break;

#if defined(HAVE_LIBREADLINE) && defined(GNUPLOT_HISTORY)

case S_HISTORYSIZE:

set_historysize();

break;

#endif

case S_ISOSAMPLES:

set_isosamples();

break;

case S_KEY:

set_key();

break;

case S_KEYTITLE:

set_keytitle();

break;

case S_LABEL:

set_label();

break;

case S_LOADPATH:

set_loadpath();

break;

case S_LOCALE:

set_locale();

break;

case S_LOGSCALE:

set_logscale();

break;

case S_MAPPING:

set_mapping();

break;

case S_BMARGIN:

set_bmargin();

break;

case S_LMARGIN:

set_lmargin();

break;

case S_RMARGIN:

set_rmargin();

break;

case S_TMARGIN:

set_tmargin();

break;

case S_MISSING:

set_missing();

break;

#ifdef USE_MOUSE

case S_MOUSE:

set_mouse();

break;

#endif

case S_MULTIPLOT:

term_start_multiplot();

break;

case S_OFFSETS:

set_offsets();

break;

case S_ORIGIN:

set_origin();

break;

case S_OUTPUT:

set_output();

break;

case S_PARAMETRIC:

set_parametric();

break;

case S_POINTSIZE:

set_pointsize();

break;

case S_POLAR:

set_polar();

break;

case S_SAMPLES:

set_samples();

break;

case S_SIZE:

set_size();

break;

case S_STYLE:

set_style();

break;

case S_SURFACE:

set_surface();

break;

case S_TERMINAL:

set_terminal();

break;

case S_TERMOPTIONS:

set_termoptions();

break;

case S_TICS:

set_tics();

break;

case S_TICSCALE:

set_ticscale();

break;

case S_TICSLEVEL:

set_ticslevel();

break;

case S_TIMEFMT:

set_timefmt();

break;

case S_TIMESTAMP:

set_timestamp();

break;

case S_TITLE:

set_xyzlabel(&title);

break;

case S_VIEW:

set_view();

break;

case S_ZERO:

set_zero();

break;

/* FIXME */

case S_MXTICS:

case S_NOMXTICS:

case S_XTICS:

case S_NOXTICS:

case S_XDTICS:

case S_NOXDTICS:

case S_XMTICS:

case S_NOXMTICS:

set_tic_prop(FIRST_X_AXIS);

break;

case S_MYTICS:

case S_NOMYTICS:

case S_YTICS:

case S_NOYTICS:

case S_YDTICS:

case S_NOYDTICS:

case S_YMTICS:

case S_NOYMTICS:

set_tic_prop(FIRST_Y_AXIS);

break;

case S_MX2TICS:

case S_NOMX2TICS:

case S_X2TICS:

case S_NOX2TICS:

case S_X2DTICS:

case S_NOX2DTICS:

case S_X2MTICS:

case S_NOX2MTICS:

set_tic_prop(SECOND_X_AXIS);

break;

case S_MY2TICS:

case S_NOMY2TICS:

case S_Y2TICS:

case S_NOY2TICS:

case S_Y2DTICS:

case S_NOY2DTICS:

case S_Y2MTICS:

case S_NOY2MTICS:

set_tic_prop(SECOND_Y_AXIS);

break;

case S_MZTICS:

case S_NOMZTICS:

case S_ZTICS:

case S_NOZTICS:

case S_ZDTICS:

case S_NOZDTICS:

case S_ZMTICS:

case S_NOZMTICS:

set_tic_prop(FIRST_Z_AXIS);

break;

case S_XDATA:

set_timedata(FIRST_X_AXIS);

/* HBB 20000506: the old cod this this, too, although it

* serves no useful purpose, AFAICS */

set_timedata(T_AXIS);

set_timedata(U_AXIS);

break;

case S_YDATA:

set_timedata(FIRST_Y_AXIS);

/* dito */

set_timedata(V_AXIS);

break;

case S_ZDATA:

set_timedata(FIRST_Z_AXIS);

break;

case S_X2DATA:

set_timedata(SECOND_X_AXIS);

break;

case S_Y2DATA:

set_timedata(SECOND_Y_AXIS);

break;

case S_XLABEL:

set_xyzlabel(&axis_array[FIRST_X_AXIS].label);

break;

case S_YLABEL:

set_xyzlabel(&axis_array[FIRST_Y_AXIS].label);

break;

case S_ZLABEL:

set_xyzlabel(&axis_array[FIRST_Z_AXIS].label);

break;

case S_X2LABEL:

set_xyzlabel(&axis_array[SECOND_X_AXIS].label);

break;

case S_Y2LABEL:

set_xyzlabel(&axis_array[SECOND_Y_AXIS].label);

break;

case S_XRANGE:

set_range(FIRST_X_AXIS);

break;

case S_X2RANGE:

set_range(SECOND_X_AXIS);

break;

case S_YRANGE:

set_range(FIRST_Y_AXIS);

break;

case S_Y2RANGE:

set_range(SECOND_Y_AXIS);

break;

case S_ZRANGE:

set_range(FIRST_Z_AXIS);

break;

case S_RRANGE:

set_range(R_AXIS);

break;

case S_TRANGE:

set_range(T_AXIS);

break;

case S_URANGE:

set_range(U_AXIS);

break;

case S_VRANGE:

set_range(V_AXIS);

break;

case S_XZEROAXIS:

set_zeroaxis(FIRST_X_AXIS);

break;

case S_YZEROAXIS:

set_zeroaxis(FIRST_Y_AXIS);

break;

case S_X2ZEROAXIS:

set_zeroaxis(SECOND_X_AXIS);

break;

case S_Y2ZEROAXIS:

set_zeroaxis(SECOND_Y_AXIS);

break;

case S_ZEROAXIS:

set_allzeroaxis();

break;

default:

int_error(c_token, setmess);

break;

}

#ifdef BACKWARDS_COMPATIBLE

}

#endif

}

/* process 'set angles' command */

static void

set_angles()

{

c_token++;

if (END_OF_COMMAND) {

/* assuming same as defaults */

ang2rad = 1;

} else if (almost_equals(c_token, "r$adians")) {

c_token++;

ang2rad = 1;

} else if (almost_equals(c_token, "d$egrees")) {

c_token++;

ang2rad = DEG2RAD;

} else

int_error(c_token, "expecting 'radians' or 'degrees'");

if (polar && axis_array[T_AXIS].set_autoscale) {

/* set trange if in polar mode and no explicit range */

axis_array[T_AXIS].set_min = 0;

axis_array[T_AXIS].set_max = 2 * M_PI / ang2rad;

}

/* process a 'set arrow' command */

/* set arrow {tag} {from x,y} {to x,y} {{no}head} */

static void

set_arrow()

{

struct value a;

struct arrow_def *this_arrow = NULL;

struct arrow_def *new_arrow = NULL;

struct arrow_def *prev_arrow = NULL;

struct position spos, epos, headsize;

struct lp_style_type loc_lp;

int tag;

TBOOLEAN set_start, set_end, head = 1;

TBOOLEAN set_line = 0, set_headsize = 0, set_layer = 0;

TBOOLEAN relative = 0;

int layer = 0;

headsize.x = 0; /* length being zero means the default head size */

c_token++;

/* Init struct lp_style_type loc_lp */

reset_lp_properties (&loc_lp);

/* get tag */

if (!END_OF_COMMAND

&& !equals(c_token, "from")

&& !equals(c_token, "to")

&& !equals(c_token, "rto")

) {

/* must be a tag expression! */

tag = (int) real(const_express(&a));

if (tag <= 0)

int_error(c_token, "tag must be > zero");

} else

tag = assign_arrow_tag(); /* default next tag */

/* HBB 20001018: removed code here that accepted 'first' or

* 'second' keywords. The resulting variables 'axes' and

* 'set_axes' effected nothing, anyway --> deleted them, too. */

/* get start position */

if (!END_OF_COMMAND && equals(c_token, "from")) {

c_token++;

if (END_OF_COMMAND)

int_error(c_token, "start coordinates expected");

/* get coordinates */

get_position(&spos);

set_start = TRUE;

} else {

spos.x = spos.y = spos.z = 0;

spos.scalex = spos.scaley = spos.scalez = first_axes;

set_start = FALSE;

}

/* get end position */

if (!END_OF_COMMAND && equals(c_token, "to")) {

c_token++;

if (END_OF_COMMAND)

int_error(c_token, "end coordinates expected");

/* get coordinates */

get_position(&epos);

set_end = TRUE;

} else if (!END_OF_COMMAND && equals(c_token, "rto")) {

c_token++;

if (END_OF_COMMAND)

int_error(c_token, "end coordinates expected");

/* get coordinates */

get_position(&epos);

set_end = TRUE;

relative = 1;

} else {

epos.x = epos.y = epos.z = 0;

epos.scalex = epos.scaley = epos.scalez = first_axes;

set_end = FALSE;

}

/* get start position - what the heck, either order is ok */

if (!END_OF_COMMAND && equals(c_token, "from")) {

if (set_start)

int_error(c_token, "only one 'from' is allowed");

c_token++;

if (END_OF_COMMAND)

int_error(c_token, "start coordinates expected");

/* get coordinates */

get_position(&spos);

set_start = TRUE;

}

if (!END_OF_COMMAND && equals(c_token, "nohead")) {

c_token++;

head = 0;

}

if (!END_OF_COMMAND && equals(c_token, "head")) {

c_token++;

head = 1;

}

if (!END_OF_COMMAND && equals(c_token, "heads")) {

c_token++;

head = 2;

}

if (!END_OF_COMMAND && equals(c_token, "size")) {

headsize.scalex = headsize.scaley = headsize.scalez = first_axes;

/* only scalex used; scaley is angle of the head in [deg] */

c_token++;

if (END_OF_COMMAND)

int_error(c_token, "head size expected");

get_position(&headsize);

set_headsize = TRUE;

}

set_layer = FALSE;

if (!END_OF_COMMAND && equals(c_token, "back")) {

c_token++;

layer = 0;

set_layer = TRUE;

}

if (!END_OF_COMMAND && equals(c_token, "front")) {

c_token++;

layer = 1;

set_layer = TRUE;

}

set_line = 1;

/* pick up a line spec - allow ls, but no point. */

lp_parse(&loc_lp, 1, 0, 0, 0);

loc_lp.pointflag = 0; /* standard value for arrows, don't use points */

if (!END_OF_COMMAND)

int_error(c_token, "extraneous or out-of-order arguments in set arrow");

/* OK! add arrow */

if (first_arrow != NULL) { /* skip to last arrow */

for (this_arrow = first_arrow; this_arrow != NULL;

prev_arrow = this_arrow, this_arrow = this_arrow->next)

/* is this the arrow we want? */

if (tag <= this_arrow->tag)

break;

}

if (this_arrow != NULL && tag == this_arrow->tag) {

/* changing the arrow */

if (set_start) {

this_arrow->start = spos;

}

if (set_end) {

this_arrow->end = epos;

this_arrow->relative = relative;

}

this_arrow->head = head;

if (set_layer) {

this_arrow->layer = layer;

}

if (set_headsize) {

this_arrow->headsize = headsize;

}

if (set_line) {

this_arrow->lp_properties = loc_lp;

}

} else { /* adding the arrow */

new_arrow = (struct arrow_def *)

gp_alloc(sizeof(struct arrow_def), "arrow");

if (prev_arrow != NULL)

prev_arrow->next = new_arrow; /* add it to end of list */

else

first_arrow = new_arrow; /* make it start of list */

new_arrow->tag = tag;

new_arrow->next = this_arrow;

new_arrow->start = spos;

new_arrow->end = epos;

new_arrow->head = head;

new_arrow->headsize = headsize;

new_arrow->layer = layer;

new_arrow->relative = relative;

new_arrow->lp_properties = loc_lp;

}

/* assign a new arrow tag

* arrows are kept sorted by tag number, so this is easy

* returns the lowest unassigned tag number

static int

assign_arrow_tag()

{

struct arrow_def *this_arrow;

int last = 0; /* previous tag value */

for (this_arrow = first_arrow; this_arrow != NULL;

this_arrow = this_arrow->next)

if (this_arrow->tag == last + 1)

last++;

else

break;

return (last + 1);

}

/* process 'set autoscale' command */

static void

set_autoscale()

{

char min_string[20], max_string[20];

c_token++;

if (END_OF_COMMAND) {

INIT_AXIS_ARRAY(set_autoscale , DTRUE);

return;

} else if (equals(c_token, "xy") || equals(c_token, "yx")) {

axis_array[FIRST_X_AXIS].set_autoscale =

axis_array[FIRST_Y_AXIS].set_autoscale = DTRUE;

c_token++;

return;

}

/* save on replication with a macro */

#define PROCESS_AUTO_LETTER(axis) \

do { \

if (equals(c_token, axis_defaults[axis].name)) { \

axis_array[axis].set_autoscale = DTRUE; \

++c_token; \

return; \

} \

sprintf(min_string, "%smi$n", axis_defaults[axis].name); \

if (almost_equals(c_token, min_string)) { \

axis_array[axis].set_autoscale |= 1; \

++c_token; \

return; \

} \

sprintf(max_string, "%sma$x", axis_defaults[axis].name); \

if (almost_equals(c_token, max_string)) { \

axis_array[axis].set_autoscale |= 2; \

++c_token; \

return; \

} \

} while(0)

PROCESS_AUTO_LETTER(R_AXIS);

PROCESS_AUTO_LETTER(T_AXIS);

PROCESS_AUTO_LETTER(U_AXIS);

PROCESS_AUTO_LETTER(V_AXIS);

PROCESS_AUTO_LETTER(FIRST_X_AXIS);

PROCESS_AUTO_LETTER(FIRST_Y_AXIS);

PROCESS_AUTO_LETTER(FIRST_Z_AXIS);

PROCESS_AUTO_LETTER(SECOND_X_AXIS);

PROCESS_AUTO_LETTER(SECOND_Y_AXIS);

/* came here only if nothing found: */

int_error(c_token, "Invalid range");

}

/* process 'set bars' command */

static void

set_bars()

{

struct value a;

c_token++;

if(END_OF_COMMAND) {

bar_size = 1.0;

} else if(almost_equals(c_token,"s$mall")) {

bar_size = 0.0;

++c_token;

} else if(almost_equals(c_token,"l$arge")) {

bar_size = 1.0;

++c_token;

} else {

bar_size = real(const_express(&a));

}

/* process 'set border' command */

static void

set_border()

{

struct value a;

c_token++;

if(END_OF_COMMAND){

draw_border = 31;

} else {

draw_border = (int)real(const_express(&a));

}

/* HBB 980609: add linestyle handling for 'set border...' */

/* For now, you have to give a border bitpattern to be able to specify

* a linestyle. Sorry for this, but the gnuplot parser really is too messy

* for any other solution, currently */

/* not for long, I hope. Lars */

if(END_OF_COMMAND) {

set_lp_properties(&border_lp, 0, -2, 0, 1.0, 1.0);

} else {

lp_parse(&border_lp, 1, 0, -2, 0);

}

/* process 'set boxwidth' command */

static void

set_boxwidth()

{

struct value a;

c_token++;

if (END_OF_COMMAND)

boxwidth = -1.0;

else {

/* if((boxwidth = real(const_express(&a))) != -2.0) */

/* boxwidth = magnitude(const_express(&a));*/

boxwidth = real(const_express(&a));

}

/* process 'set clabel' command */

static void

set_clabel()

{

c_token++;

label_contours = TRUE;

if (isstring(c_token))

quote_str(contour_format, c_token++, 30);

}

/* process 'set clip' command */

static void

set_clip()

{

c_token++;

if (END_OF_COMMAND)

/* assuming same as points */

clip_points = TRUE;

else if (almost_equals(c_token, "p$oints"))

clip_points = TRUE;

else if (almost_equals(c_token, "o$ne"))

clip_lines1 = TRUE;

else if (almost_equals(c_token, "t$wo"))

clip_lines2 = TRUE;

else

int_error(c_token, "expecting 'points', 'one', or 'two'");

c_token++;

}

/* process 'set cntrparam' command */

static void

set_cntrparam()

{

struct value a;

c_token++;

if (END_OF_COMMAND) {

/* assuming same as defaults */

contour_pts = DEFAULT_NUM_APPROX_PTS;

contour_kind = CONTOUR_KIND_LINEAR;

contour_order = DEFAULT_CONTOUR_ORDER;

contour_levels = DEFAULT_CONTOUR_LEVELS;

contour_levels_kind = LEVELS_AUTO;

} else if (almost_equals(c_token, "p$oints")) {

c_token++;

contour_pts = (int) real(const_express(&a));

} else if (almost_equals(c_token, "li$near")) {

c_token++;

contour_kind = CONTOUR_KIND_LINEAR;

} else if (almost_equals(c_token, "c$ubicspline")) {

c_token++;

contour_kind = CONTOUR_KIND_CUBIC_SPL;

} else if (almost_equals(c_token, "b$spline")) {

c_token++;

contour_kind = CONTOUR_KIND_BSPLINE;

} else if (almost_equals(c_token, "le$vels")) {

c_token++;

init_dynarray(&dyn_contour_levels_list, sizeof(double), 5, 10);

/* RKC: I have modified the next two:

* to use commas to separate list elements as in xtics

* so that incremental lists start,incr[,end]as in "

if (almost_equals(c_token, "di$screte")) {

contour_levels_kind = LEVELS_DISCRETE;

c_token++;

if(END_OF_COMMAND)

int_error(c_token, "expecting discrete level");

else

*(double *)nextfrom_dynarray(&dyn_contour_levels_list) =

real(const_express(&a));

while(!END_OF_COMMAND) {

if (!equals(c_token, ","))

int_error(c_token,

"expecting comma to separate discrete levels");

c_token++;

*(double *)nextfrom_dynarray(&dyn_contour_levels_list) =

real(const_express(&a));

}

contour_levels = dyn_contour_levels_list.end;

} else if (almost_equals(c_token, "in$cremental")) {

int i = 0; /* local counter */

contour_levels_kind = LEVELS_INCREMENTAL;

c_token++;

contour_levels_list[i++] = real(const_express(&a));

if (!equals(c_token, ","))

int_error(c_token,

"expecting comma to separate start,incr levels");

c_token++;

if((contour_levels_list[i++] = real(const_express(&a))) == 0)

int_error(c_token, "increment cannot be 0");

if(!END_OF_COMMAND) {

if (!equals(c_token, ","))

int_error(c_token,

"expecting comma to separate incr,stop levels");

c_token++;

/* need to round up, since 10,10,50 is 5 levels, not four,

* but 10,10,49 is four

dyn_contour_levels_list.end = i;

contour_levels = (int) ( (real(const_express(&a))-contour_levels_list[0])/contour_levels_list[1] + 1.0);

}

} else if (almost_equals(c_token, "au$to")) {

contour_levels_kind = LEVELS_AUTO;

c_token++;

if(!END_OF_COMMAND)

contour_levels = (int) real(const_express(&a));

} else {

if(contour_levels_kind == LEVELS_DISCRETE)

int_error(c_token, "Levels type is discrete, ignoring new number of contour levels");

contour_levels = (int) real(const_express(&a));

}

} else if (almost_equals(c_token, "o$rder")) {

int order;

c_token++;

order = (int) real(const_express(&a));

if ( order < 2 || order > MAX_BSPLINE_ORDER )

int_error(c_token, "bspline order must be in [2..10] range.");

contour_order = order;

} else

int_error(c_token, "expecting 'linear', 'cubicspline', 'bspline', 'points', 'levels' or 'order'");

}

/* process 'set contour' command */

static void

set_contour()

{

c_token++;

if (END_OF_COMMAND)

/* assuming same as points */

draw_contour = CONTOUR_BASE;

else {

if (almost_equals(c_token, "ba$se"))

draw_contour = CONTOUR_BASE;

else if (almost_equals(c_token, "s$urface"))

draw_contour = CONTOUR_SRF;

else if (almost_equals(c_token, "bo$th"))

draw_contour = CONTOUR_BOTH;

else

int_error(c_token, "expecting 'base', 'surface', or 'both'");

c_token++;

}

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gnuplot-old/src/set.c at axis_branch_base · gnuplot/gnuplot-old · GitHub

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