| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: igraph.c,v 1.2 2003/10/27 10:28:59 schorsch Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* igraph.c - interactive graphing program. |
| 6 |
* |
| 7 |
* 6/30/86 |
| 8 |
* |
| 9 |
* Greg Ward Larson |
| 10 |
*/ |
| 11 |
|
| 12 |
#include <stdio.h> |
| 13 |
#include <ctype.h> |
| 14 |
#include <setjmp.h> |
| 15 |
|
| 16 |
#include "rtprocess.h" |
| 17 |
#include "rterror.h" |
| 18 |
#include "mgvars.h" |
| 19 |
|
| 20 |
typedef struct { |
| 21 |
char *descrip; /* description */ |
| 22 |
char *value; /* value */ |
| 23 |
} SMAP; |
| 24 |
|
| 25 |
#define NDEV 10 /* number of devices */ |
| 26 |
|
| 27 |
SMAP dev[NDEV] = { |
| 28 |
{ "Tektronix 4014", "t4014" }, |
| 29 |
{ "AED 512", "output aed5" }, |
| 30 |
{ "X10 Window System", "xmeta" }, |
| 31 |
{ "X11 Window System", "x11meta" }, |
| 32 |
{ "Epson Printer", "output mx80" }, |
| 33 |
{ "Mannesman-Tally Printer", "output mt160" }, |
| 34 |
{ "Mannesman-Tally High Density", "output mt160l" }, |
| 35 |
{ "Apple Imagewriter", "output imagew" }, |
| 36 |
{ "Imagen Printer", "impress | ipr" }, |
| 37 |
{ "Postscript Printer", "psmeta | lpr" }, |
| 38 |
}; |
| 39 |
|
| 40 |
#define NTYP 7 /* number of plot types */ |
| 41 |
|
| 42 |
SMAP typ[NTYP] = { |
| 43 |
{ "Cartesian Plot", "cartesian.plt" }, |
| 44 |
{ "Polar Plot (degrees)", "polar.plt" }, |
| 45 |
{ "Curve Plot (symbols & lines)", "curve.plt" }, |
| 46 |
{ "Scatter Plot (symbols only)", "scatter.plt" }, |
| 47 |
{ "Line Plot (lines only)", "line.plt" }, |
| 48 |
{ "Function Plot (lines)", "function.plt" }, |
| 49 |
{ "Box and Whisker Plot", "boxw.plt" }, |
| 50 |
}; |
| 51 |
|
| 52 |
#define NCAL 3 /* number of calculation types */ |
| 53 |
|
| 54 |
SMAP cal[NCAL] = { |
| 55 |
{ "Extrema, Average", "nma" }, |
| 56 |
{ "Integral", "ni" }, |
| 57 |
{ "Linear Regression", "nl" }, |
| 58 |
}; |
| 59 |
|
| 60 |
char *progname; |
| 61 |
|
| 62 |
char *libpath[4]; |
| 63 |
|
| 64 |
static int recover = 0; /* try to recover? */ |
| 65 |
|
| 66 |
static jmp_buf env; /* setjmp buffer */ |
| 67 |
|
| 68 |
static char curfile[64] = "temp.plt"; /* current file name */ |
| 69 |
|
| 70 |
static void mainmenu(void); |
| 71 |
static void uwait(void); |
| 72 |
static void gcompute(void); |
| 73 |
static void setvars(int nvar, VARIABLE vars[]); |
| 74 |
static void plotout(void); |
| 75 |
static void settype(void); |
| 76 |
static char *getfile(void); |
| 77 |
|
| 78 |
int |
| 79 |
main(argc, argv) |
| 80 |
int argc; |
| 81 |
char *argv[]; |
| 82 |
{ |
| 83 |
char *getenv(); |
| 84 |
int i; |
| 85 |
|
| 86 |
progname = argv[0]; |
| 87 |
libpath[0] = "./"; |
| 88 |
if ((libpath[i=1] = getenv("MDIR")) != NULL) |
| 89 |
i++; |
| 90 |
libpath[i++] = MDIR; |
| 91 |
libpath[i] = NULL; |
| 92 |
|
| 93 |
for (i = 1; i < argc; i++) |
| 94 |
mgload(strcpy(curfile, argv[i])); |
| 95 |
|
| 96 |
mainmenu(); |
| 97 |
|
| 98 |
quit(0); |
| 99 |
} |
| 100 |
|
| 101 |
extern void |
| 102 |
eputs(msg) /* print error message */ |
| 103 |
char *msg; |
| 104 |
{ |
| 105 |
fputs(msg, stderr); |
| 106 |
} |
| 107 |
|
| 108 |
extern void |
| 109 |
quit(code) /* recover or quit */ |
| 110 |
int code; |
| 111 |
{ |
| 112 |
if (code && recover--) |
| 113 |
longjmp(env, 1); |
| 114 |
exit(code); |
| 115 |
} |
| 116 |
|
| 117 |
|
| 118 |
static void |
| 119 |
mainmenu(void) /* the main menu loop */ |
| 120 |
{ |
| 121 |
char sbuf[128]; |
| 122 |
|
| 123 |
for ( ; ; ) { |
| 124 |
printf("\nGRAPH MENU\n"); |
| 125 |
printf("\t1 New Plot\n"); |
| 126 |
printf("\t2 Set Plot Type\n"); |
| 127 |
printf("\t3 Load Plot File\n"); |
| 128 |
printf("\t4 Save Plot File\n"); |
| 129 |
printf("\t5 Change Plot Variable\n"); |
| 130 |
printf("\t6 Change Curve Variable\n"); |
| 131 |
printf("\t7 Output Plot\n"); |
| 132 |
printf("\t8 Escape Command\n"); |
| 133 |
printf("\t9 Computation\n"); |
| 134 |
printf("\t10 Quit\n"); |
| 135 |
|
| 136 |
printf("\nChoice: "); |
| 137 |
clearerr(stdin); fgets(sbuf, sizeof(sbuf), stdin); |
| 138 |
if (feof(stdin)) |
| 139 |
return; |
| 140 |
switch (atoi(sbuf)) { |
| 141 |
case 1: /* new plot */ |
| 142 |
mgclearall(); |
| 143 |
break; |
| 144 |
case 2: /* set plot type */ |
| 145 |
settype(); |
| 146 |
break; |
| 147 |
case 3: /* load plot file */ |
| 148 |
if (setjmp(env) == 0) { |
| 149 |
recover = 1; |
| 150 |
mgload(getfile()); |
| 151 |
recover = 0; |
| 152 |
} else |
| 153 |
uwait(); |
| 154 |
break; |
| 155 |
case 4: /* save plot file */ |
| 156 |
if (setjmp(env) == 0) { |
| 157 |
recover = 1; |
| 158 |
mgsave(getfile()); |
| 159 |
recover = 0; |
| 160 |
} else |
| 161 |
uwait(); |
| 162 |
break; |
| 163 |
case 5: /* set plot variable */ |
| 164 |
setvars(NVARS, gparam); |
| 165 |
break; |
| 166 |
case 6: /* set curve variable */ |
| 167 |
printf("\nCurve (A-%c): ", MAXCUR-1+'A'); |
| 168 |
clearerr(stdin); fgets(sbuf, sizeof(sbuf), stdin); |
| 169 |
if (islower(sbuf[0])) |
| 170 |
sbuf[0] -= 'a'; |
| 171 |
else if (isupper(sbuf[0])) |
| 172 |
sbuf[0] -= 'A'; |
| 173 |
else |
| 174 |
break; |
| 175 |
if (sbuf[0] < MAXCUR) |
| 176 |
setvars(NCVARS, cparam[sbuf[0]]); |
| 177 |
break; |
| 178 |
case 7: /* output plot */ |
| 179 |
plotout(); |
| 180 |
break; |
| 181 |
case 8: /* escape command */ |
| 182 |
printf("\nCommand: "); |
| 183 |
clearerr(stdin); fgets(sbuf, sizeof(sbuf), stdin); |
| 184 |
if (sbuf[0]) { |
| 185 |
system(sbuf); |
| 186 |
uwait(); |
| 187 |
} |
| 188 |
break; |
| 189 |
case 9: /* computation */ |
| 190 |
gcompute(); |
| 191 |
break; |
| 192 |
case 10: /* quit */ |
| 193 |
return; |
| 194 |
} |
| 195 |
} |
| 196 |
} |
| 197 |
|
| 198 |
|
| 199 |
static char * |
| 200 |
getfile(void) /* get file name from user */ |
| 201 |
{ |
| 202 |
char sbuf[128]; |
| 203 |
|
| 204 |
printf("\nFile (%s): ", curfile); |
| 205 |
clearerr(stdin); fgets(sbuf, sizeof(sbuf), stdin); |
| 206 |
if (sbuf[0] == '-') |
| 207 |
return(NULL); |
| 208 |
if (sbuf[0]) |
| 209 |
strcpy(curfile, sbuf); |
| 210 |
return(curfile); |
| 211 |
} |
| 212 |
|
| 213 |
static void |
| 214 |
settype(void) /* set plot type */ |
| 215 |
{ |
| 216 |
char sbuf[128]; |
| 217 |
int i; |
| 218 |
|
| 219 |
printf("\nPLOT TYPE\n"); |
| 220 |
|
| 221 |
for (i = 0; i < NTYP; i++) |
| 222 |
printf("\t%d %s\n", i+1, typ[i].descrip); |
| 223 |
|
| 224 |
printf("\nChoice (0): "); |
| 225 |
clearerr(stdin); fgets(sbuf, sizeof(sbuf), stdin); |
| 226 |
i = atoi(sbuf) - 1; |
| 227 |
if (i < 0 || i >= NTYP) |
| 228 |
return; |
| 229 |
sprintf(sbuf, "include=%s", typ[i].value); |
| 230 |
setmgvar("plot type", stdin, sbuf); |
| 231 |
} |
| 232 |
|
| 233 |
|
| 234 |
static void |
| 235 |
plotout(void) /* output our graph */ |
| 236 |
{ |
| 237 |
extern FILE *pout; |
| 238 |
char sbuf[128]; |
| 239 |
char *command; |
| 240 |
int i; |
| 241 |
|
| 242 |
printf("\nOUTPUT PLOT\n"); |
| 243 |
|
| 244 |
for (i = 0; i < NDEV; i++) |
| 245 |
printf("\t%d %s\n", i+1, dev[i].descrip); |
| 246 |
printf("\t%d Dumb Terminal\n", NDEV+1); |
| 247 |
printf("\t%d Other\n", NDEV+2); |
| 248 |
|
| 249 |
printf("\nChoice (0): "); |
| 250 |
clearerr(stdin); fgets(sbuf, sizeof(sbuf), stdin); |
| 251 |
i = atoi(sbuf) - 1; |
| 252 |
if (i < 0 || i > NDEV+1) |
| 253 |
return; |
| 254 |
if (i < NDEV) |
| 255 |
command = dev[i].value; |
| 256 |
else if (i == NDEV) { |
| 257 |
if (setjmp(env) == 0) { |
| 258 |
recover = 1; |
| 259 |
cgraph(79, 22); |
| 260 |
recover = 0; |
| 261 |
} |
| 262 |
uwait(); |
| 263 |
return; |
| 264 |
} else if (i == NDEV+1) { |
| 265 |
printf("\nDriver command: "); |
| 266 |
clearerr(stdin); fgets(sbuf, sizeof(sbuf), stdin); |
| 267 |
if (!sbuf[0]) |
| 268 |
return; |
| 269 |
command = sbuf; |
| 270 |
} |
| 271 |
if ((pout = popen(command, "w")) == NULL) { |
| 272 |
fprintf(stderr, "%s: cannot execute device driver: %s\n", |
| 273 |
progname, dev[i].value); |
| 274 |
quit(1); |
| 275 |
} |
| 276 |
if (setjmp(env) == 0) { |
| 277 |
recover = 1; |
| 278 |
mgraph(); |
| 279 |
recover = 0; |
| 280 |
} else |
| 281 |
uwait(); |
| 282 |
mdone(); |
| 283 |
pclose(pout); |
| 284 |
} |
| 285 |
|
| 286 |
|
| 287 |
static void |
| 288 |
setvars( /* set variables */ |
| 289 |
int nvar, |
| 290 |
VARIABLE vars[]) |
| 291 |
{ |
| 292 |
char sbuf[128]; |
| 293 |
int i, j; |
| 294 |
|
| 295 |
for ( ; ; ) { |
| 296 |
printf("\nVARIABLES\n"); |
| 297 |
|
| 298 |
for (i = 0; i < nvar; i++) |
| 299 |
printf("\t%d %s\n", i+1, vars[i].descrip == NULL ? |
| 300 |
vars[i].name : vars[i].descrip); |
| 301 |
|
| 302 |
printf("\nChoice (0): "); |
| 303 |
clearerr(stdin); fgets(sbuf, sizeof(sbuf), stdin); |
| 304 |
i = atoi(sbuf) - 1; |
| 305 |
if (i < 0 || i >= nvar) |
| 306 |
return; |
| 307 |
printf("\n%s", vars[i].name); |
| 308 |
if (vars[i].type == FUNCTION) |
| 309 |
printf("(x)"); |
| 310 |
if (vars[i].flags & DEFINED) { |
| 311 |
mgtoa(sbuf, &vars[i]); |
| 312 |
printf(" (%s)", sbuf); |
| 313 |
} |
| 314 |
printf(": "); |
| 315 |
if (vars[i].type == FUNCTION) |
| 316 |
sprintf(sbuf, "%s(x)=", vars[i].name); |
| 317 |
else |
| 318 |
sprintf(sbuf, "%s=", vars[i].name); |
| 319 |
j = strlen(sbuf); |
| 320 |
clearerr(stdin); fgets(sbuf+j, sizeof(sbuf)-j, stdin); |
| 321 |
if (sbuf[j]) { |
| 322 |
if (vars[i].type == DATA && sbuf[j] == '-') |
| 323 |
sbuf[j] = '\0'; |
| 324 |
|
| 325 |
if (setjmp(env) == 0) { |
| 326 |
recover = 1; |
| 327 |
setmgvar("variable set", stdin, sbuf); |
| 328 |
recover = 0; |
| 329 |
} else |
| 330 |
uwait(); |
| 331 |
} |
| 332 |
} |
| 333 |
} |
| 334 |
|
| 335 |
|
| 336 |
static void |
| 337 |
gcompute(void) /* do a computation */ |
| 338 |
{ |
| 339 |
char sbuf[64]; |
| 340 |
int i; |
| 341 |
|
| 342 |
printf("\nCOMPUTE\n"); |
| 343 |
|
| 344 |
for (i = 0; i < NCAL; i++) |
| 345 |
printf("\t%d %s\n", i+1, cal[i].descrip); |
| 346 |
|
| 347 |
printf("\nChoice (0): "); |
| 348 |
clearerr(stdin); fgets(sbuf, sizeof(sbuf), stdin); |
| 349 |
i = atoi(sbuf) - 1; |
| 350 |
if (i < 0 || i >= NCAL) |
| 351 |
return; |
| 352 |
printf("\n"); |
| 353 |
if (setjmp(env) == 0) { |
| 354 |
recover = 1; |
| 355 |
gcalc(cal[i].value); |
| 356 |
recover = 0; |
| 357 |
} |
| 358 |
printf("\n"); |
| 359 |
uwait(); |
| 360 |
} |
| 361 |
|
| 362 |
|
| 363 |
static void |
| 364 |
uwait(void) /* wait for user after command, error */ |
| 365 |
{ |
| 366 |
printf("Hit return to continue: "); |
| 367 |
while (getchar() != '\n') |
| 368 |
; |
| 369 |
} |
