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root/radiance/ray/src/px/pcompos.c
Revision: 2.24
Committed: Sun Jul 27 22:12:03 2003 UTC (20 years, 9 months ago) by schorsch
Content type: text/plain
Branch: MAIN
Changes since 2.23: +2 -2 lines
Log Message:
Added grouping parens to reduce ambiguity warnings.

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: pcompos.c,v 2.23 2003/07/03 22:41:44 schorsch Exp $";
3 #endif
4 /*
5 * pcompos.c - program to composite pictures.
6 *
7 * 6/30/87
8 */
9
10 #include <stdio.h>
11 #include <math.h>
12 #include <time.h>
13 #include <string.h>
14
15 #include "copyright.h"
16
17 #include "platform.h"
18 #include "color.h"
19 #include "resolu.h"
20
21 #define MAXFILE 64
22
23 #define HASMIN 1
24 #define HASMAX 2
25
26 /* output picture size */
27 int xsiz = 0;
28 int ysiz = 0;
29 /* input dimensions */
30 int xmin = 0;
31 int ymin = 0;
32 int xmax = 0;
33 int ymax = 0;
34
35 COLR bgcolr = BLKCOLR; /* background color */
36
37 int labelht = 24; /* label height */
38
39 int checkthresh = 0; /* check threshold value */
40
41 char Command[] = "<Command>";
42 char Label[] = "<Label>";
43
44 char *progname;
45
46 struct {
47 char *name; /* file or command name */
48 FILE *fp; /* stream pointer */
49 int xres, yres; /* picture size */
50 int xloc, yloc; /* anchor point */
51 int flags; /* HASMIN, HASMAX */
52 COLR thmin, thmax; /* thresholds */
53 } input[MAXFILE]; /* our input files */
54
55 int nfile; /* number of files */
56
57 char ourfmt[LPICFMT+1] = PICFMT;
58 int wrongformat = 0;
59
60 FILE *lblopen();
61 void quit();
62
63
64 tabputs(s) /* print line preceded by a tab */
65 char *s;
66 {
67 char fmt[32];
68
69 if (isheadid(s))
70 return(0);
71 if (formatval(fmt, s)) {
72 if (globmatch(ourfmt, fmt)) {
73 wrongformat = 0;
74 strcpy(ourfmt, fmt);
75 } else
76 wrongformat = 1;
77 } else {
78 putc('\t', stdout);
79 fputs(s, stdout);
80 }
81 return(0);
82 }
83
84
85 main(argc, argv)
86 int argc;
87 char *argv[];
88 {
89 int ncolumns = 0;
90 int autolabel = 0;
91 int curcol = 0, x0 = 0, curx = 0, cury = 0, spacing = 0;
92 int xsgn, ysgn;
93 char *thislabel;
94 int an;
95 SET_DEFAULT_BINARY();
96 SET_FILE_BINARY(stdin);
97 SET_FILE_BINARY(stdout);
98 progname = argv[0];
99
100 for (an = 1; an < argc && argv[an][0] == '-'; an++)
101 switch (argv[an][1]) {
102 case 'x':
103 xsiz = atoi(argv[++an]);
104 break;
105 case 'y':
106 ysiz = atoi(argv[++an]);
107 break;
108 case 'b':
109 setcolr(bgcolr, atof(argv[an+1]),
110 atof(argv[an+2]),
111 atof(argv[an+3]));
112 an += 3;
113 break;
114 case 'a':
115 ncolumns = atoi(argv[++an]);
116 break;
117 case 's':
118 spacing = atoi(argv[++an]);
119 break;
120 case 'o':
121 curx = x0 = atoi(argv[++an]);
122 cury = atoi(argv[++an]);
123 break;
124 case 'l':
125 switch (argv[an][2]) {
126 case 'a':
127 autolabel++;
128 break;
129 case 'h':
130 labelht = atoi(argv[++an]);
131 break;
132 case '\0':
133 goto dofiles;
134 default:
135 goto userr;
136 }
137 break;
138 case '\0':
139 case 't':
140 goto dofiles;
141 default:
142 goto userr;
143 }
144 dofiles:
145 newheader("RADIANCE", stdout);
146 fputnow(stdout);
147 for (nfile = 0; an < argc; nfile++) {
148 if (nfile >= MAXFILE)
149 goto toomany;
150 thislabel = NULL;
151 input[nfile].flags = 0;
152 xsgn = ysgn = '-';
153 while (an < argc && (argv[an][0] == '-' || argv[an][0] == '+'
154 || argv[an][0] == '=')) {
155 switch (argv[an][1]) {
156 case 't':
157 checkthresh = 1;
158 if (argv[an][0] == '-') {
159 input[nfile].flags |= HASMIN;
160 setcolr(input[nfile].thmin,
161 atof(argv[an+1]),
162 atof(argv[an+1]),
163 atof(argv[an+1]));
164 } else if (argv[an][0] == '+') {
165 input[nfile].flags |= HASMAX;
166 setcolr(input[nfile].thmax,
167 atof(argv[an+1]),
168 atof(argv[an+1]),
169 atof(argv[an+1]));
170 } else
171 goto userr;
172 an++;
173 break;
174 case 'l':
175 if (strcmp(argv[an], "-l"))
176 goto userr;
177 thislabel = argv[++an];
178 break;
179 case '+':
180 case '-':
181 case '0':
182 if (argv[an][0] != '=')
183 goto userr;
184 xsgn = argv[an][1];
185 ysgn = argv[an][2];
186 if (ysgn != '+' && ysgn != '-' && ysgn != '0')
187 goto userr;
188 break;
189 case '\0':
190 if (argv[an][0] == '-')
191 goto getfile;
192 goto userr;
193 default:
194 goto userr;
195 }
196 an++;
197 }
198 getfile:
199 if (argc-an < (ncolumns ? 1 : 3))
200 goto userr;
201 if (autolabel && thislabel == NULL)
202 thislabel = argv[an];
203 if (!strcmp(argv[an], "-")) {
204 input[nfile].name = "<stdin>";
205 input[nfile].fp = stdin;
206 } else {
207 if (argv[an][0] == '!') {
208 input[nfile].name = Command;
209 input[nfile].fp = popen(argv[an]+1, "r");
210 } else {
211 input[nfile].name = argv[an];
212 input[nfile].fp = fopen(argv[an], "r");
213 }
214 if (input[nfile].fp == NULL) {
215 perror(argv[an]);
216 quit(1);
217 }
218 }
219 an++;
220 /* get header */
221 printf("%s:\n", input[nfile].name);
222 getheader(input[nfile].fp, tabputs, NULL);
223 if (wrongformat) {
224 fprintf(stderr, "%s: incompatible input format\n",
225 input[nfile].name);
226 quit(1);
227 }
228 /* get picture size */
229 if (fgetresolu(&input[nfile].xres, &input[nfile].yres,
230 input[nfile].fp) < 0) {
231 fprintf(stderr, "%s: bad picture size\n",
232 input[nfile].name);
233 quit(1);
234 }
235 if (ncolumns > 0) {
236 if (curcol >= ncolumns) {
237 cury = ymax + spacing;
238 curx = x0;
239 curcol = 0;
240 }
241 input[nfile].xloc = curx;
242 input[nfile].yloc = cury;
243 curx += input[nfile].xres + spacing;
244 curcol++;
245 } else {
246 input[nfile].xloc = atoi(argv[an++]);
247 if (xsgn == '+')
248 input[nfile].xloc -= input[nfile].xres;
249 else if (xsgn == '0')
250 input[nfile].xloc -= input[nfile].xres/2;
251 input[nfile].yloc = atoi(argv[an++]);
252 if (ysgn == '+')
253 input[nfile].yloc -= input[nfile].yres;
254 else if (ysgn == '0')
255 input[nfile].yloc -= input[nfile].yres/2;
256 }
257 if (input[nfile].xloc < xmin)
258 xmin = input[nfile].xloc;
259 if (input[nfile].yloc < ymin)
260 ymin = input[nfile].yloc;
261 if (input[nfile].xloc+input[nfile].xres > xmax)
262 xmax = input[nfile].xloc+input[nfile].xres;
263 if (input[nfile].yloc+input[nfile].yres > ymax)
264 ymax = input[nfile].yloc+input[nfile].yres;
265 if (thislabel != NULL) {
266 if (++nfile >= MAXFILE)
267 goto toomany;
268 input[nfile].name = Label;
269 input[nfile].flags = 0;
270 input[nfile].xres = input[nfile-1].xres;
271 input[nfile].yres = labelht;
272 if ((input[nfile].fp = lblopen(thislabel,
273 &input[nfile].xres,
274 &input[nfile].yres)) == NULL)
275 goto labelerr;
276 input[nfile].xloc = input[nfile-1].xloc;
277 input[nfile].yloc = input[nfile-1].yloc +
278 input[nfile-1].yres-input[nfile].yres;
279 }
280 }
281 if (xsiz <= 0)
282 xsiz = xmax;
283 else if (xsiz > xmax)
284 xmax = xsiz;
285 if (ysiz <= 0)
286 ysiz = ymax;
287 else if (ysiz > ymax)
288 ymax = ysiz;
289 /* add new header info. */
290 printargs(argc, argv, stdout);
291 if (strcmp(ourfmt, PICFMT))
292 fputformat(ourfmt, stdout); /* print format if known */
293 putchar('\n');
294 fprtresolu(xsiz, ysiz, stdout);
295
296 compos();
297
298 quit(0);
299 userr:
300 fprintf(stderr,
301 "Usage: %s [-x xr][-y yr][-b r g b][-a n][-s p][-o x0 y0][-la][-lh h] ",
302 progname);
303 fprintf(stderr, "[-t min1][+t max1][-l lab][=SS] pic1 x1 y1 ..\n");
304 quit(1);
305 toomany:
306 fprintf(stderr, "%s: only %d files and labels allowed\n",
307 progname, MAXFILE);
308 quit(1);
309 labelerr:
310 fprintf(stderr, "%s: error opening label\n", progname);
311 quit(1);
312 }
313
314
315 compos() /* composite pictures */
316 {
317 COLR *scanin, *scanout;
318 int y;
319 register int x, i;
320
321 scanin = (COLR *)malloc((xmax-xmin)*sizeof(COLR));
322 if (scanin == NULL)
323 goto memerr;
324 scanin -= xmin;
325 if (checkthresh) {
326 scanout = (COLR *)malloc(xsiz*sizeof(COLR));
327 if (scanout == NULL)
328 goto memerr;
329 } else
330 scanout = scanin;
331 for (y = ymax-1; y >= 0; y--) {
332 for (x = 0; x < xsiz; x++)
333 copycolr(scanout[x], bgcolr);
334 for (i = 0; i < nfile; i++) {
335 if (input[i].yloc > y ||
336 input[i].yloc+input[i].yres <= y)
337 continue;
338 if (freadcolrs(scanin+input[i].xloc,
339 input[i].xres, input[i].fp) < 0) {
340 fprintf(stderr, "%s: read error (y==%d)\n",
341 input[i].name,
342 y-input[i].yloc);
343 quit(1);
344 }
345 if (y >= ysiz)
346 continue;
347 if (checkthresh) {
348 x = input[i].xloc+input[i].xres;
349 if (x > xsiz)
350 x = xsiz;
351 for (x--; x >= 0 && x >= input[i].xloc; x--) {
352 if (input[i].flags & HASMIN &&
353 cmpcolr(scanin[x], input[i].thmin) <= 0)
354 continue;
355 if (input[i].flags & HASMAX &&
356 cmpcolr(scanin[x], input[i].thmax) >= 0)
357 continue;
358 copycolr(scanout[x], scanin[x]);
359 }
360 }
361 }
362 if (y >= ysiz)
363 continue;
364 if (fwritecolrs(scanout, xsiz, stdout) < 0) {
365 perror(progname);
366 quit(1);
367 }
368 }
369 return;
370 memerr:
371 perror(progname);
372 quit(1);
373 }
374
375
376 int
377 cmpcolr(c1, c2) /* compare two colr's (improvisation) */
378 register COLR c1, c2;
379 {
380 register int i, j;
381
382 j = 4; /* check exponents first! */
383 while (j--)
384 if ( (i = c1[j] - c2[j]) )
385 return(i);
386 return(0);
387 }
388
389
390 FILE *
391 lblopen(s, xp, yp) /* open pipe to label generator */
392 char *s;
393 int *xp, *yp;
394 {
395 char com[128];
396 FILE *fp;
397
398 sprintf(com, "psign -s -.15 -a 2 -x %d -y %d '%.90s'", *xp, *yp, s);
399 if ((fp = popen(com, "r")) == NULL)
400 return(NULL);
401 if (checkheader(fp, COLRFMT, NULL) < 0)
402 goto err;
403 if (fgetresolu(xp, yp, fp) < 0)
404 goto err;
405 return(fp);
406 err:
407 pclose(fp);
408 return(NULL);
409 }
410
411
412 void
413 quit(code) /* exit gracefully */
414 int code;
415 {
416 register int i;
417 /* close input files */
418 for (i = 0; i < nfile; i++)
419 if (input[i].name == Command || input[i].name == Label)
420 pclose(input[i].fp);
421 else
422 fclose(input[i].fp);
423 exit(code);
424 }