1 |
greg |
2.1 |
#ifndef lint |
2 |
greg |
2.52 |
static const char RCSid[] = "$Id: rpiece.c,v 2.51 2010/05/17 17:03:53 greg Exp $"; |
3 |
greg |
2.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* Generate sections of a picture. |
6 |
|
|
*/ |
7 |
|
|
|
8 |
schorsch |
2.43 |
|
9 |
|
|
#include <stdio.h> |
10 |
|
|
#include <signal.h> |
11 |
|
|
#include <sys/types.h> |
12 |
schorsch |
2.49 |
|
13 |
|
|
#include "platform.h" |
14 |
schorsch |
2.45 |
#ifndef NON_POSIX /* XXX need abstraction for process management */ |
15 |
|
|
#include <sys/wait.h> |
16 |
|
|
#endif |
17 |
schorsch |
2.43 |
|
18 |
greg |
2.44 |
#include "standard.h" |
19 |
schorsch |
2.43 |
#include "color.h" |
20 |
|
|
#include "view.h" |
21 |
|
|
#include "rtprocess.h" |
22 |
greg |
2.16 |
|
23 |
|
|
#ifndef F_SETLKW |
24 |
|
|
|
25 |
schorsch |
2.43 |
int |
26 |
|
|
main( |
27 |
|
|
int argc, |
28 |
|
|
char *argv[] |
29 |
|
|
) |
30 |
greg |
2.16 |
{ |
31 |
|
|
fprintf(stderr, "%s: no NFS lock manager on this machine\n", argv[0]); |
32 |
|
|
exit(1); |
33 |
|
|
} |
34 |
|
|
|
35 |
|
|
#else |
36 |
|
|
|
37 |
greg |
2.12 |
#ifndef NFS |
38 |
|
|
#define NFS 1 |
39 |
|
|
#endif |
40 |
greg |
2.9 |
/* set the following to 0 to forgo forking */ |
41 |
|
|
#ifndef MAXFORK |
42 |
greg |
2.12 |
#if NFS |
43 |
greg |
2.10 |
#define MAXFORK 3 /* allotment of duped processes */ |
44 |
greg |
2.12 |
#else |
45 |
|
|
#define MAXFORK 0 |
46 |
greg |
2.9 |
#endif |
47 |
greg |
2.12 |
#endif |
48 |
greg |
2.18 |
/* protection from SYSV signals(!) */ |
49 |
greg |
2.27 |
#if defined(sgi) |
50 |
greg |
2.18 |
#define guard_io() sighold(SIGALRM) |
51 |
|
|
#define unguard() sigrelse(SIGALRM) |
52 |
|
|
#endif |
53 |
|
|
#ifndef guard_io |
54 |
schorsch |
2.43 |
#define guard_io() |
55 |
|
|
#define unguard() |
56 |
greg |
2.18 |
#endif |
57 |
gregl |
2.34 |
|
58 |
greg |
2.37 |
extern char *strerror(); |
59 |
gregl |
2.34 |
|
60 |
greg |
2.1 |
/* rpict command */ |
61 |
greg |
2.23 |
char *rpargv[128] = {"rpict", "-S", "1"}; |
62 |
|
|
int rpargc = 3; |
63 |
greg |
2.1 |
FILE *torp, *fromrp; |
64 |
greg |
2.8 |
COLR *pbuf; |
65 |
greg |
2.1 |
/* our view parameters */ |
66 |
|
|
VIEW ourview = STDVIEW; |
67 |
greg |
2.4 |
double pixaspect = 1.0; |
68 |
greg |
2.23 |
int hres = 1024, vres = 1024, hmult = 4, vmult = 4; |
69 |
greg |
2.1 |
/* output file */ |
70 |
|
|
char *outfile = NULL; |
71 |
|
|
int outfd; |
72 |
|
|
long scanorig; |
73 |
greg |
2.25 |
FILE *syncfp = NULL; /* synchronization file pointer */ |
74 |
|
|
int synclst = F_UNLCK; /* synchronization file lock status */ |
75 |
greg |
2.9 |
int nforked = 0; |
76 |
greg |
2.1 |
|
77 |
greg |
2.25 |
#define sflock(t) if ((t)!=synclst) dolock(fileno(syncfp),synclst=t) |
78 |
|
|
|
79 |
greg |
2.1 |
char *progname; |
80 |
|
|
int verbose = 0; |
81 |
greg |
2.31 |
unsigned timelim = 0; |
82 |
greg |
2.25 |
int rvrlim = -1; |
83 |
greg |
2.1 |
|
84 |
greg |
2.6 |
int gotalrm = 0; |
85 |
schorsch |
2.38 |
void onalrm(int i) { gotalrm++; } |
86 |
greg |
2.1 |
|
87 |
schorsch |
2.43 |
static void dolock(int fd, int ltyp); |
88 |
|
|
static void init(int ac, char **av); |
89 |
|
|
static int nextpiece(int *xp, int *yp); |
90 |
|
|
static int rvrpiece(int *xp, int *yp); |
91 |
|
|
static int cleanup(int rstat); |
92 |
|
|
static void rpiece(void); |
93 |
|
|
static int putpiece(int xpos, int ypos); |
94 |
|
|
static void filerr(char *t); |
95 |
greg |
2.6 |
|
96 |
schorsch |
2.43 |
|
97 |
|
|
int |
98 |
|
|
main( |
99 |
|
|
int argc, |
100 |
|
|
char *argv[] |
101 |
|
|
) |
102 |
greg |
2.1 |
{ |
103 |
|
|
register int i, rval; |
104 |
|
|
|
105 |
|
|
progname = argv[0]; |
106 |
|
|
for (i = 1; i < argc; i++) { |
107 |
greg |
2.22 |
/* expand arguments */ |
108 |
greg |
2.37 |
while ((rval = expandarg(&argc, &argv, i)) > 0) |
109 |
|
|
; |
110 |
|
|
if (rval < 0) { |
111 |
greg |
2.50 |
fprintf(stderr, "%s: cannot expand '%s'\n", |
112 |
greg |
2.37 |
argv[0], argv[i]); |
113 |
|
|
exit(1); |
114 |
|
|
} |
115 |
greg |
2.1 |
if (argv[i][0] == '-') |
116 |
|
|
switch (argv[i][1]) { |
117 |
|
|
case 'v': |
118 |
|
|
switch (argv[i][2]) { |
119 |
|
|
case '\0': /* verbose option */ |
120 |
|
|
verbose = !verbose; |
121 |
|
|
continue; |
122 |
|
|
case 'f': /* view file */ |
123 |
|
|
if (viewfile(argv[++i], &ourview, NULL) <= 0) { |
124 |
|
|
fprintf(stderr, |
125 |
|
|
"%s: not a view file\n", argv[i]); |
126 |
|
|
exit(1); |
127 |
|
|
} |
128 |
|
|
continue; |
129 |
|
|
default: /* view option? */ |
130 |
|
|
rval = getviewopt(&ourview, argc-i, argv+i); |
131 |
|
|
if (rval >= 0) { |
132 |
|
|
i += rval; |
133 |
|
|
continue; |
134 |
|
|
} |
135 |
|
|
break; |
136 |
|
|
} |
137 |
|
|
break; |
138 |
|
|
case 'p': /* pixel aspect ratio? */ |
139 |
greg |
2.51 |
if (argv[i][2] == 'm') { |
140 |
|
|
fprintf(stderr, "%s: -pm unsupported\n", |
141 |
|
|
argv[0]); |
142 |
|
|
++i; |
143 |
|
|
continue; |
144 |
|
|
} |
145 |
greg |
2.23 |
if (argv[i][2] != 'a' || argv[i][3]) |
146 |
|
|
break; |
147 |
gregl |
2.35 |
pixaspect = atof(argv[++i]); |
148 |
greg |
2.23 |
continue; |
149 |
greg |
2.31 |
case 'T': /* time limit (hours) */ |
150 |
|
|
if (argv[i][2]) |
151 |
|
|
break; |
152 |
|
|
timelim = atof(argv[++i])*3600. + .5; |
153 |
greg |
2.51 |
continue; |
154 |
greg |
2.23 |
case 'x': /* overall x resolution */ |
155 |
|
|
if (argv[i][2]) |
156 |
|
|
break; |
157 |
|
|
hres = atoi(argv[++i]); |
158 |
|
|
continue; |
159 |
|
|
case 'y': /* overall y resolution */ |
160 |
|
|
if (argv[i][2]) |
161 |
|
|
break; |
162 |
|
|
vres = atoi(argv[++i]); |
163 |
|
|
continue; |
164 |
greg |
2.1 |
case 'X': /* horizontal multiplier */ |
165 |
|
|
if (argv[i][2]) |
166 |
|
|
break; |
167 |
|
|
hmult = atoi(argv[++i]); |
168 |
|
|
continue; |
169 |
|
|
case 'Y': /* vertical multiplier */ |
170 |
|
|
if (argv[i][2]) |
171 |
|
|
break; |
172 |
|
|
vmult = atoi(argv[++i]); |
173 |
|
|
continue; |
174 |
greg |
2.25 |
case 'R': /* recover */ |
175 |
|
|
if (argv[i][2]) |
176 |
|
|
break; |
177 |
|
|
rvrlim = 0; |
178 |
|
|
/* fall through */ |
179 |
greg |
2.5 |
case 'F': /* syncronization file */ |
180 |
|
|
if (argv[i][2]) |
181 |
|
|
break; |
182 |
greg |
2.28 |
if ((syncfp = |
183 |
|
|
fdopen(open(argv[++i],O_RDWR|O_CREAT,0666),"r+")) == NULL) { |
184 |
greg |
2.5 |
fprintf(stderr, "%s: cannot open\n", |
185 |
|
|
argv[i]); |
186 |
|
|
exit(1); |
187 |
|
|
} |
188 |
|
|
continue; |
189 |
greg |
2.15 |
case 'z': /* z-file ist verbotten */ |
190 |
|
|
fprintf(stderr, "%s: -z option not allowed\n", |
191 |
|
|
argv[0]); |
192 |
|
|
exit(1); |
193 |
greg |
2.1 |
case 'o': /* output file */ |
194 |
|
|
if (argv[i][2]) |
195 |
|
|
break; |
196 |
|
|
outfile = argv[++i]; |
197 |
|
|
continue; |
198 |
greg |
2.23 |
} else if (i >= argc-1) |
199 |
|
|
break; |
200 |
greg |
2.1 |
rpargv[rpargc++] = argv[i]; |
201 |
|
|
} |
202 |
greg |
2.23 |
if (i >= argc) { |
203 |
|
|
fprintf(stderr, "%s: missing octree argument\n", argv[0]); |
204 |
|
|
exit(1); |
205 |
|
|
} |
206 |
greg |
2.1 |
if (outfile == NULL) { |
207 |
|
|
fprintf(stderr, "%s: missing output file\n", argv[0]); |
208 |
|
|
exit(1); |
209 |
|
|
} |
210 |
|
|
init(argc, argv); |
211 |
|
|
rpiece(); |
212 |
greg |
2.15 |
exit(cleanup(0)); |
213 |
greg |
2.1 |
} |
214 |
|
|
|
215 |
|
|
|
216 |
schorsch |
2.43 |
static void |
217 |
|
|
dolock( /* lock or unlock a file */ |
218 |
|
|
int fd, |
219 |
|
|
int ltyp |
220 |
|
|
) |
221 |
greg |
2.25 |
{ |
222 |
|
|
static struct flock fls; /* static so initialized to zeroes */ |
223 |
|
|
|
224 |
|
|
fls.l_type = ltyp; |
225 |
|
|
if (fcntl(fd, F_SETLKW, &fls) < 0) { |
226 |
greg |
2.28 |
fprintf(stderr, "%s: cannot lock/unlock file: %s\n", |
227 |
greg |
2.37 |
progname, strerror(errno)); |
228 |
greg |
2.25 |
exit(1); |
229 |
|
|
} |
230 |
|
|
} |
231 |
|
|
|
232 |
|
|
|
233 |
schorsch |
2.43 |
static void |
234 |
|
|
init( /* set up output file and start rpict */ |
235 |
|
|
int ac, |
236 |
|
|
char **av |
237 |
|
|
) |
238 |
greg |
2.1 |
{ |
239 |
greg |
2.23 |
static char hrbuf[16], vrbuf[16]; |
240 |
greg |
2.2 |
extern char VersionID[]; |
241 |
greg |
2.1 |
char *err; |
242 |
|
|
FILE *fp; |
243 |
|
|
int hr, vr; |
244 |
schorsch |
2.39 |
SUBPROC rpd; /* since we don't close_process(), this can be local */ |
245 |
greg |
2.1 |
/* set up view */ |
246 |
|
|
if ((err = setview(&ourview)) != NULL) { |
247 |
|
|
fprintf(stderr, "%s: %s\n", progname, err); |
248 |
|
|
exit(1); |
249 |
|
|
} |
250 |
greg |
2.25 |
if (syncfp != NULL) { |
251 |
|
|
sflock(F_RDLCK); |
252 |
|
|
fscanf(syncfp, "%d %d", &hmult, &vmult); |
253 |
|
|
sflock(F_UNLCK); |
254 |
greg |
2.5 |
} |
255 |
greg |
2.23 |
/* compute piece size */ |
256 |
|
|
hres /= hmult; |
257 |
|
|
vres /= vmult; |
258 |
greg |
2.46 |
if (hres <= 0 || vres <= 0) { |
259 |
greg |
2.47 |
fprintf(stderr, "%s: illegal resolution/subdivision\n", progname); |
260 |
greg |
2.46 |
exit(1); |
261 |
|
|
} |
262 |
greg |
2.1 |
normaspect(viewaspect(&ourview)*hmult/vmult, &pixaspect, &hres, &vres); |
263 |
greg |
2.23 |
sprintf(hrbuf, "%d", hres); |
264 |
|
|
rpargv[rpargc++] = "-x"; rpargv[rpargc++] = hrbuf; |
265 |
|
|
sprintf(vrbuf, "%d", vres); |
266 |
|
|
rpargv[rpargc++] = "-y"; rpargv[rpargc++] = vrbuf; |
267 |
|
|
rpargv[rpargc++] = "-pa"; rpargv[rpargc++] = "0"; |
268 |
|
|
rpargv[rpargc++] = av[ac-1]; |
269 |
|
|
rpargv[rpargc] = NULL; |
270 |
greg |
2.1 |
/* open output file */ |
271 |
|
|
if ((outfd = open(outfile, O_WRONLY|O_CREAT|O_EXCL, 0666)) >= 0) { |
272 |
greg |
2.25 |
dolock(outfd, F_WRLCK); |
273 |
greg |
2.1 |
if ((fp = fdopen(dup(outfd), "w")) == NULL) |
274 |
|
|
goto filerr; |
275 |
greg |
2.29 |
newheader("RADIANCE", fp); /* create header */ |
276 |
|
|
printargs(ac, av, fp); |
277 |
greg |
2.2 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
278 |
greg |
2.1 |
fputs(VIEWSTR, fp); |
279 |
|
|
fprintview(&ourview, fp); |
280 |
|
|
putc('\n', fp); |
281 |
greg |
2.52 |
fputnow(fp); |
282 |
greg |
2.1 |
if (pixaspect < .99 || pixaspect > 1.01) |
283 |
|
|
fputaspect(pixaspect, fp); |
284 |
|
|
fputformat(COLRFMT, fp); |
285 |
|
|
putc('\n', fp); |
286 |
|
|
fprtresolu(hres*hmult, vres*vmult, fp); |
287 |
|
|
} else if ((outfd = open(outfile, O_RDWR)) >= 0) { |
288 |
greg |
2.25 |
dolock(outfd, F_RDLCK); |
289 |
greg |
2.1 |
if ((fp = fdopen(dup(outfd), "r+")) == NULL) |
290 |
|
|
goto filerr; |
291 |
greg |
2.13 |
getheader(fp, NULL, NULL); /* skip header */ |
292 |
greg |
2.15 |
if (!fscnresolu(&hr, &vr, fp) || /* check resolution */ |
293 |
greg |
2.1 |
hr != hres*hmult || vr != vres*vmult) { |
294 |
greg |
2.8 |
fprintf(stderr, "%s: resolution mismatch on file \"%s\"\n", |
295 |
|
|
progname, outfile); |
296 |
greg |
2.1 |
exit(1); |
297 |
|
|
} |
298 |
|
|
} else { |
299 |
greg |
2.8 |
fprintf(stderr, "%s: cannot open file \"%s\"\n", |
300 |
|
|
progname, outfile); |
301 |
greg |
2.1 |
exit(1); |
302 |
|
|
} |
303 |
|
|
scanorig = ftell(fp); /* record position of first scanline */ |
304 |
|
|
if (fclose(fp) == -1) /* done with stream i/o */ |
305 |
|
|
goto filerr; |
306 |
greg |
2.25 |
dolock(outfd, F_UNLCK); |
307 |
greg |
2.1 |
/* start rpict process */ |
308 |
schorsch |
2.39 |
if (open_process(&rpd, rpargv) <= 0) { |
309 |
greg |
2.3 |
fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
310 |
greg |
2.1 |
exit(1); |
311 |
|
|
} |
312 |
schorsch |
2.39 |
if ((fromrp = fdopen(rpd.r, "r")) == NULL || |
313 |
|
|
(torp = fdopen(rpd.w, "w")) == NULL) { |
314 |
greg |
2.1 |
fprintf(stderr, "%s: cannot open stream to %s\n", |
315 |
|
|
progname, rpargv[0]); |
316 |
|
|
exit(1); |
317 |
|
|
} |
318 |
greg |
2.23 |
if ((pbuf = (COLR *)bmalloc(hres*vres*sizeof(COLR))) == NULL) { |
319 |
greg |
2.1 |
fprintf(stderr, "%s: out of memory\n", progname); |
320 |
|
|
exit(1); |
321 |
|
|
} |
322 |
greg |
2.6 |
signal(SIGALRM, onalrm); |
323 |
greg |
2.31 |
if (timelim) |
324 |
|
|
alarm(timelim); |
325 |
greg |
2.1 |
return; |
326 |
|
|
filerr: |
327 |
greg |
2.8 |
fprintf(stderr, "%s: i/o error on file \"%s\"\n", progname, outfile); |
328 |
greg |
2.1 |
exit(1); |
329 |
|
|
} |
330 |
|
|
|
331 |
|
|
|
332 |
schorsch |
2.43 |
static int |
333 |
|
|
nextpiece( /* get next piece assignment */ |
334 |
|
|
int *xp, |
335 |
|
|
int *yp |
336 |
|
|
) |
337 |
greg |
2.5 |
{ |
338 |
greg |
2.6 |
if (gotalrm) /* someone wants us to quit */ |
339 |
|
|
return(0); |
340 |
greg |
2.25 |
if (syncfp != NULL) { /* use sync file */ |
341 |
|
|
/* |
342 |
|
|
* So we don't necessarily have to lock and unlock the file |
343 |
|
|
* multiple times (very slow), we establish an exclusive |
344 |
|
|
* lock at the beginning on our synchronization file and |
345 |
|
|
* maintain it in the subroutine rvrpiece(). |
346 |
|
|
*/ |
347 |
|
|
sflock(F_WRLCK); |
348 |
|
|
fseek(syncfp, 0L, 0); /* read position */ |
349 |
|
|
if (fscanf(syncfp, "%*d %*d %d %d", xp, yp) < 2) { |
350 |
greg |
2.8 |
*xp = hmult-1; |
351 |
|
|
*yp = vmult; |
352 |
|
|
} |
353 |
greg |
2.25 |
if (rvrlim == 0) /* initialize recovery limit */ |
354 |
|
|
rvrlim = *xp*vmult + *yp; |
355 |
|
|
if (rvrpiece(xp, yp)) { /* do stragglers first */ |
356 |
|
|
sflock(F_UNLCK); |
357 |
|
|
return(1); |
358 |
|
|
} |
359 |
greg |
2.8 |
if (--(*yp) < 0) { /* decrement position */ |
360 |
greg |
2.5 |
*yp = vmult-1; |
361 |
greg |
2.25 |
if (--(*xp) < 0) { /* all done */ |
362 |
|
|
sflock(F_UNLCK); |
363 |
greg |
2.5 |
return(0); |
364 |
|
|
} |
365 |
|
|
} |
366 |
greg |
2.25 |
fseek(syncfp, 0L, 0); /* write new position */ |
367 |
|
|
fprintf(syncfp, "%4d %4d\n%4d %4d\n\n", hmult, vmult, *xp, *yp); |
368 |
|
|
fflush(syncfp); |
369 |
|
|
sflock(F_UNLCK); /* release sync file */ |
370 |
greg |
2.5 |
return(1); |
371 |
|
|
} |
372 |
greg |
2.26 |
return(scanf("%d %d", xp, yp) == 2); /* use stdin */ |
373 |
greg |
2.5 |
} |
374 |
|
|
|
375 |
|
|
|
376 |
schorsch |
2.43 |
static int |
377 |
|
|
rvrpiece( /* check for recoverable pieces */ |
378 |
|
|
register int *xp, |
379 |
|
|
register int *yp |
380 |
|
|
) |
381 |
greg |
2.25 |
{ |
382 |
|
|
static char *pdone = NULL; /* which pieces are done */ |
383 |
|
|
static long readpos = -1; /* how far we've read */ |
384 |
|
|
register int i; |
385 |
|
|
/* |
386 |
|
|
* This routine is called by nextpiece() with an |
387 |
|
|
* exclusive lock on syncfp and the file pointer at the |
388 |
|
|
* appropriate position to read in the finished pieces. |
389 |
|
|
*/ |
390 |
|
|
if (rvrlim < 0) |
391 |
|
|
return(0); /* only check if asked */ |
392 |
|
|
if (pdone == NULL) /* first call */ |
393 |
|
|
pdone = calloc(hmult*vmult, sizeof(char)); |
394 |
greg |
2.30 |
if (pdone == NULL) { |
395 |
|
|
fprintf(stderr, "%s: out of memory\n", progname); |
396 |
|
|
exit(1); |
397 |
|
|
} |
398 |
greg |
2.25 |
if (readpos != -1) /* mark what's been done */ |
399 |
|
|
fseek(syncfp, readpos, 0); |
400 |
|
|
while (fscanf(syncfp, "%d %d", xp, yp) == 2) |
401 |
|
|
pdone[*xp*vmult+*yp] = 1; |
402 |
|
|
if (!feof(syncfp)) { |
403 |
|
|
fprintf(stderr, "%s: format error in sync file\n", progname); |
404 |
|
|
exit(1); |
405 |
|
|
} |
406 |
|
|
readpos = ftell(syncfp); |
407 |
|
|
i = hmult*vmult; /* find an unaccounted for piece */ |
408 |
|
|
while (i-- > rvrlim) |
409 |
|
|
if (!pdone[i]) { |
410 |
|
|
*xp = i / vmult; |
411 |
|
|
*yp = i % vmult; |
412 |
|
|
pdone[i] = 1; /* consider it done */ |
413 |
|
|
return(1); |
414 |
|
|
} |
415 |
|
|
rvrlim = -1; /* nothing left to recover */ |
416 |
|
|
free(pdone); |
417 |
|
|
pdone = NULL; |
418 |
|
|
return(0); |
419 |
|
|
} |
420 |
|
|
|
421 |
|
|
|
422 |
schorsch |
2.43 |
static int |
423 |
|
|
cleanup( /* close rpict process and clean up */ |
424 |
|
|
int rstat |
425 |
|
|
) |
426 |
greg |
2.1 |
{ |
427 |
greg |
2.10 |
int status; |
428 |
greg |
2.1 |
|
429 |
greg |
2.23 |
bfree((char *)pbuf, hres*vres*sizeof(COLR)); |
430 |
greg |
2.1 |
fclose(torp); |
431 |
|
|
fclose(fromrp); |
432 |
greg |
2.10 |
while (wait(&status) != -1) |
433 |
greg |
2.9 |
if (rstat == 0) |
434 |
|
|
rstat = status>>8 & 0xff; |
435 |
|
|
return(rstat); |
436 |
greg |
2.1 |
} |
437 |
|
|
|
438 |
|
|
|
439 |
schorsch |
2.43 |
static void |
440 |
|
|
rpiece(void) /* render picture piece by piece */ |
441 |
greg |
2.1 |
{ |
442 |
|
|
VIEW pview; |
443 |
|
|
int xorg, yorg; |
444 |
greg |
2.11 |
/* compute view parameters */ |
445 |
schorsch |
2.40 |
pview = ourview; |
446 |
greg |
2.11 |
switch (ourview.type) { |
447 |
|
|
case VT_PER: |
448 |
greg |
2.48 |
pview.horiz = (2.*180./PI)*atan( |
449 |
|
|
tan((PI/180./2.)*ourview.horiz)/hmult ); |
450 |
|
|
pview.vert = (2.*180./PI)*atan( |
451 |
|
|
tan((PI/180./2.)*ourview.vert)/vmult ); |
452 |
greg |
2.11 |
break; |
453 |
|
|
case VT_PAR: |
454 |
|
|
case VT_ANG: |
455 |
|
|
pview.horiz = ourview.horiz / hmult; |
456 |
|
|
pview.vert = ourview.vert / vmult; |
457 |
|
|
break; |
458 |
greg |
2.32 |
case VT_CYL: |
459 |
|
|
pview.horiz = ourview.horiz / hmult; |
460 |
greg |
2.48 |
pview.vert = (2.*180./PI)*atan( |
461 |
|
|
tan((PI/180./2.)*ourview.vert)/vmult ); |
462 |
greg |
2.32 |
break; |
463 |
greg |
2.11 |
case VT_HEM: |
464 |
greg |
2.48 |
pview.horiz = (2.*180./PI)*asin( |
465 |
|
|
sin((PI/180./2.)*ourview.horiz)/hmult ); |
466 |
|
|
pview.vert = (2.*180./PI)*asin( |
467 |
|
|
sin((PI/180./2.)*ourview.vert)/vmult ); |
468 |
|
|
break; |
469 |
|
|
case VT_PLS: |
470 |
|
|
pview.horiz = sin((PI/180./2.)*ourview.horiz) / |
471 |
|
|
(1.0 + cos((PI/180./2.)*ourview.horiz)) / hmult; |
472 |
|
|
pview.horiz *= pview.horiz; |
473 |
|
|
pview.horiz = (2.*180./PI)*acos((1. - pview.horiz) / |
474 |
|
|
(1. + pview.horiz)); |
475 |
|
|
pview.vert = sin((PI/180./2.)*ourview.vert) / |
476 |
|
|
(1.0 + cos((PI/180./2.)*ourview.vert)) / vmult; |
477 |
|
|
pview.vert *= pview.vert; |
478 |
|
|
pview.vert = (2.*180./PI)*acos((1. - pview.vert) / |
479 |
|
|
(1. + pview.vert)); |
480 |
greg |
2.11 |
break; |
481 |
|
|
default: |
482 |
|
|
fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
483 |
|
|
progname, ourview.type); |
484 |
|
|
exit(cleanup(1)); |
485 |
|
|
} |
486 |
|
|
/* render each piece */ |
487 |
greg |
2.5 |
while (nextpiece(&xorg, &yorg)) { |
488 |
gregl |
2.33 |
pview.hoff = ourview.hoff*hmult + xorg - 0.5*(hmult-1); |
489 |
|
|
pview.voff = ourview.voff*vmult + yorg - 0.5*(vmult-1); |
490 |
greg |
2.1 |
fputs(VIEWSTR, torp); |
491 |
|
|
fprintview(&pview, torp); |
492 |
|
|
putc('\n', torp); |
493 |
greg |
2.11 |
fflush(torp); /* assigns piece to rpict */ |
494 |
greg |
2.1 |
putpiece(xorg, yorg); /* place piece in output */ |
495 |
|
|
} |
496 |
|
|
} |
497 |
|
|
|
498 |
|
|
|
499 |
schorsch |
2.43 |
static int |
500 |
|
|
putpiece( /* get next piece from rpict */ |
501 |
|
|
int xpos, |
502 |
|
|
int ypos |
503 |
|
|
) |
504 |
greg |
2.1 |
{ |
505 |
greg |
2.7 |
struct flock fls; |
506 |
greg |
2.9 |
int pid, status; |
507 |
greg |
2.1 |
int hr, vr; |
508 |
greg |
2.8 |
register int y; |
509 |
|
|
/* check bounds */ |
510 |
schorsch |
2.41 |
if ((xpos < 0) | (ypos < 0) | (xpos >= hmult) | (ypos >= vmult)) { |
511 |
greg |
2.5 |
fprintf(stderr, "%s: requested piece (%d,%d) out of range\n", |
512 |
|
|
progname, xpos, ypos); |
513 |
greg |
2.10 |
exit(cleanup(1)); |
514 |
greg |
2.5 |
} |
515 |
greg |
2.8 |
/* check header from rpict */ |
516 |
greg |
2.18 |
guard_io(); |
517 |
greg |
2.13 |
getheader(fromrp, NULL, NULL); |
518 |
schorsch |
2.41 |
if (!fscnresolu(&hr, &vr, fromrp) || (hr != hres) | (vr != vres)) { |
519 |
greg |
2.3 |
fprintf(stderr, "%s: resolution mismatch from %s\n", |
520 |
|
|
progname, rpargv[0]); |
521 |
greg |
2.10 |
exit(cleanup(1)); |
522 |
greg |
2.1 |
} |
523 |
greg |
2.24 |
if (verbose) { /* notify caller */ |
524 |
|
|
printf("%d %d begun\n", xpos, ypos); |
525 |
|
|
fflush(stdout); |
526 |
|
|
} |
527 |
greg |
2.18 |
unguard(); |
528 |
greg |
2.8 |
/* load new piece into buffer */ |
529 |
greg |
2.18 |
for (y = 0; y < vr; y++) { |
530 |
|
|
guard_io(); |
531 |
greg |
2.8 |
if (freadcolrs(pbuf+y*hr, hr, fromrp) < 0) { |
532 |
greg |
2.3 |
fprintf(stderr, "%s: read error from %s\n", |
533 |
|
|
progname, rpargv[0]); |
534 |
greg |
2.10 |
exit(cleanup(1)); |
535 |
greg |
2.1 |
} |
536 |
greg |
2.18 |
unguard(); |
537 |
|
|
} |
538 |
greg |
2.9 |
#if MAXFORK |
539 |
|
|
/* fork so we don't slow rpict down */ |
540 |
|
|
if ((pid = fork()) > 0) { |
541 |
greg |
2.10 |
if (++nforked >= MAXFORK) { |
542 |
greg |
2.9 |
wait(&status); /* reap a child */ |
543 |
|
|
if (status) |
544 |
greg |
2.10 |
exit(cleanup(status>>8 & 0xff)); |
545 |
greg |
2.9 |
nforked--; |
546 |
|
|
} |
547 |
|
|
return(pid); |
548 |
|
|
} |
549 |
|
|
#else |
550 |
|
|
pid = -1; /* no forking */ |
551 |
|
|
#endif |
552 |
greg |
2.19 |
fls.l_start = scanorig + |
553 |
|
|
((long)(vmult-1-ypos)*vres*hmult+xpos)*hres*sizeof(COLR); |
554 |
greg |
2.12 |
#if NFS |
555 |
greg |
2.19 |
fls.l_len = ((long)(vres-1)*hmult+1)*hres*sizeof(COLR); |
556 |
greg |
2.8 |
/* lock file section so NFS doesn't mess up */ |
557 |
|
|
fls.l_whence = 0; |
558 |
|
|
fls.l_type = F_WRLCK; |
559 |
greg |
2.26 |
if (fcntl(outfd, F_SETLKW, &fls) < 0) |
560 |
|
|
filerr("lock"); |
561 |
greg |
2.12 |
#endif |
562 |
greg |
2.8 |
/* write new piece to file */ |
563 |
greg |
2.42 |
if (lseek(outfd, (off_t)fls.l_start, SEEK_SET) < 0) |
564 |
greg |
2.26 |
filerr("seek"); |
565 |
greg |
2.9 |
if (hmult == 1) { |
566 |
|
|
if (writebuf(outfd, (char *)pbuf, |
567 |
|
|
vr*hr*sizeof(COLR)) != vr*hr*sizeof(COLR)) |
568 |
greg |
2.26 |
filerr("write"); |
569 |
greg |
2.9 |
} else |
570 |
|
|
for (y = 0; y < vr; y++) { |
571 |
|
|
if (writebuf(outfd, (char *)(pbuf+y*hr), |
572 |
|
|
hr*sizeof(COLR)) != hr*sizeof(COLR)) |
573 |
greg |
2.26 |
filerr("write"); |
574 |
greg |
2.9 |
if (y < vr-1 && lseek(outfd, |
575 |
greg |
2.37 |
(off_t)(hmult-1)*hr*sizeof(COLR), |
576 |
greg |
2.42 |
SEEK_CUR) < 0) |
577 |
greg |
2.26 |
filerr("seek"); |
578 |
greg |
2.1 |
} |
579 |
greg |
2.25 |
#if NFS |
580 |
|
|
fls.l_type = F_UNLCK; /* release lock */ |
581 |
greg |
2.26 |
if (fcntl(outfd, F_SETLKW, &fls) < 0) |
582 |
|
|
filerr("lock"); |
583 |
greg |
2.25 |
#endif |
584 |
greg |
2.32 |
if (verbose) { /* notify caller */ |
585 |
|
|
printf("%d %d done\n", xpos, ypos); |
586 |
|
|
fflush(stdout); |
587 |
|
|
} |
588 |
greg |
2.25 |
if (syncfp != NULL) { /* record what's been done */ |
589 |
|
|
sflock(F_WRLCK); |
590 |
|
|
fseek(syncfp, 0L, 2); /* append index */ |
591 |
|
|
fprintf(syncfp, "%4d %4d\n", xpos, ypos); |
592 |
|
|
fflush(syncfp); |
593 |
|
|
/*** Unlock not necessary, since |
594 |
|
|
sflock(F_UNLCK); _exit() or nextpiece() is next ***/ |
595 |
greg |
2.20 |
} |
596 |
greg |
2.25 |
if (pid == -1) /* didn't fork or fork failed */ |
597 |
greg |
2.9 |
return(0); |
598 |
greg |
2.25 |
_exit(0); /* else exit child process (releasing locks) */ |
599 |
greg |
2.26 |
} |
600 |
|
|
|
601 |
|
|
|
602 |
schorsch |
2.43 |
static void |
603 |
|
|
filerr( /* report file error and exit */ |
604 |
|
|
char *t |
605 |
|
|
) |
606 |
greg |
2.26 |
{ |
607 |
|
|
fprintf(stderr, "%s: %s error on file \"%s\": %s\n", |
608 |
greg |
2.37 |
progname, t, outfile, strerror(errno)); |
609 |
greg |
2.9 |
_exit(1); |
610 |
greg |
2.1 |
} |
611 |
greg |
2.16 |
|
612 |
|
|
#endif |