1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: ezplot.h,v 1.2 2000/04/28 14:14:16 kevin Exp $
7 ** Revision 1.2 2000/04/28 14:14:16 kevin
8 ** *** empty log message ***
11 ** This program is free software; you can redistribute it and/or modify
12 ** it under the terms of the GNU General Public License (version 2) as
13 ** published by the Free Software Foundation.
15 ** This program is distributed in the hope that it will be useful,
16 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ** GNU General Public License for more details.
20 ** You should have received a copy of the GNU General Public License
21 ** along with this program; if not, write to the Free Software
22 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 ******************************************************************************/
24 /*----------------------------------------------------------------------*/
27 /*----------------------------------------------------------------------*/
41 #define MAXLABEL 40 /* maximum length of axis label */
42 #define MAXTITLE 40 /* maximum length of a title */
43 #define MAXLEGEND 20 /* maximum length of a legend */
44 #define MAXCURVES 10 /* maximum number of curves that can be plotted */
45 #define MAXPTS 200 /* max number of points that can be read with
46 DATA command in INTERACTIVE mode */
55 char legend[MAXLEGEND+1];
59 #define YBUF_DEF XBUF_DEF * (72. / 120.) * 0.75
62 /*----------------------------------------------------------------------*/
64 /*----------------------------------------------------------------------*/
100 #define S_NOLABEL -40
103 #define S_XAUTOSCALE -43
104 #define S_YAUTOSCALE -44
113 #define S_NOXAXIS -53
114 #define S_NOYAXIS -54
115 #define S_XPORIGIN -55
116 #define S_YPORIGIN -56
123 #define S_RESTORE -63
125 #define S_UFINISH -65
128 #define S_INTERACTIVE -68
136 #define S_NOGRID -103
140 #define S_LEGENDBOX -107
146 #define S_TEXTSIZE -120
149 #define S_PRTMODE -123
151 /*----------------------------------------------------------------------*/
152 /* GLOBAL VARIABLES */
153 /*----------------------------------------------------------------------*/
155 /* axis definitions */
156 #define LINEAR 1 /* linear axis */
157 #define LOG 2 /* logrithmic axis */
158 #define NOAXIS 3 /* don't plot axis */
160 /* tick definitions */
175 /* symbol definitions */
180 #define SB_ERRORBAR 5
183 #define INSIDE 1 /* values of o_legendbox */
187 /*-----------------------------------------------------------------------------
191 * i_ Internal variable
194 * Normal variable that is user modifiable
195 * These variables must always have a valid value
197 * Variables controlling devices
198 * clr_ Color variable
199 * Holds a color value
200 * c_ Character string variable
201 * Contains a character string
203 * User modifiable variable associated with the set variable (s_)
204 * These variables do not always have a valid value
205 * These variables change assumption EZPLOT makes about the plot
207 * TRUE if associated value variable (v_) has been set by the user
208 *---------------------------------------------------------------------------*/
217 struct ezp_curve_st curve[MAXCURVES];
219 /*--------------------*/
220 /* INTERNAL VARIABLES */
221 /*--------------------*/
223 bool i_plotimmediate; /* indicates that a call to EZPLOT is a signal
224 to print all received arrays. EZSET uses
225 this variable to force EZPLOT to replot
227 int i_numcurves; /* number of curves received by EZPLOT */
229 /*------------------*/
230 /* DEVICE VARIABLES */
231 /*------------------*/
233 bool d_usecrt; /* TRUE if want to use CRT as output device */
234 bool d_useprt; /* TRUE if wamt to use printer as output device */
236 int d_crtmode; /* Controls which crt mode to use for plot */
237 int d_prtmode; /* Controls mode of printer output */
239 int d_xprtbuf, d_yprtbuf; /* Size of printer buffer in pixels */
241 /*-----------------*/
242 /* COLOR VARIABLES */
243 /*-----------------*/
245 int clr_axis; /* color of all axis lines */
246 int clr_title; /* color of main title */
247 int clr_label; /* color of axis labels */
248 int clr_legend; /* color of legend box */
249 int clr_grid; /* color of grid lines */
250 int clr_number; /* color of axis number labels */
252 /*------------------*/
253 /* OPTION VARIABLES */
254 /*------------------*/
256 int o_reqcurves; /* # of curves specified in CURVES command */
257 /* default value is 1, so that a call to EZPLOT
259 bool o_unknowncurves; /* TRUE when the user specifies that the
260 number of curves is unknown */
262 bool o_ustart, o_ufinish; /* TRUE if user initiates or terminate sgp */
264 double o_xporigin, o_yporigin; /* origin of plot frame in NDC */
265 double o_xlength, o_ylength; /* length of plot frame in NDC */
267 char c_xlabel[MAXLABEL+1]; /* label for x axis */
268 char c_ylabel[MAXLABEL+1]; /* label for y axis */
269 char c_title[MAXTITLE+1]; /* title to print above graph */
270 char c_legend[MAXLEGEND+1]; /* current legend specified */
272 int o_linestyle, o_color; /* style to use for curves all subsequent */
273 /* curves to EZPLOT */
274 bool o_xaxis, o_yaxis; /* Specifies where axis & labels are drawn */
275 bool o_grid; /* Flag to draw a grid at major ticks */
276 bool o_box; /* Flag to draw a box around the graph */
278 int o_xticks, o_yticks; /* direction to draw tick marks */
279 bool o_xtlabel, o_ytlabel; /* TRUE if label tick marks */
281 int o_xmajortick, o_ymajortick; /* number of major ticks to draw */
282 int o_xminortick, o_yminortick; /* number of minor ticks between major ticks */
284 int o_symbol; /* Symbol type, (0 = no symbol) */
285 int o_symfreq; /* frequency to draw symbols at curve points */
287 int o_legendbox; /* controls whether legend is inside */
288 /* or outside of the axis extents */
289 int o_tag; /* controls whether to draw tag at end of axes */
291 /*-----------------------*/
292 /* VALUE & SET variables */
293 /*-----------------------*/
295 double v_xmin, v_xmax, v_ymin, v_ymax; /* user supplied axis endpoints */
296 bool s_xmin, s_xmax, s_ymin, s_ymax; /* TRUE is endpoint has been set */
298 double v_xtitle, v_ytitle; /* NDC position to plot title */
299 bool s_xtitle, s_ytitle; /* TRUE if set position for title */
300 double v_xcross, v_ycross; /* position that axes cross */
301 bool s_xcross, s_ycross; /* TRUE if set axes cross position */
303 double v_xlegend, v_ylegend; /* upper-left position of legend box in NDC */
304 bool s_xlegend, s_ylegend; /* TRUE if set position of legend box */
306 int v_lxfrac, v_lyfrac; /* number of digits to right of decimal place */
307 bool s_lxfrac, s_lyfrac; /* TRUE if set number of fractional digits */
309 double v_textsize; /* size of text in NDC */
310 bool s_textsize; /* TRUE if user set size of text */
312 }; /* end of EZPLOT VARIABLES */
316 extern struct ezplot_var ez;
317 extern bool ezplot_firstcall; /* set to false on first call to EZSET or EZPLOT */
321 int axis_scale(double min, double max, int nint, double *minp, double *maxp, int *nintp);
323 int ezplot(double x[], double y[], int num);
328 void ezplot_1d(double *y, int n);
330 int ezset(char *command);
332 void make_numfmt(char *fmtstr, int *fldwid, int *nfrac, double min, double max, int nint);