| 17 |
|
|
| 18 |
|
/* set the following to 0 to forgo forking */ |
| 19 |
|
#ifndef MAXFORK |
| 20 |
< |
#define MAXFORK 2 /* max. unreaped child processes */ |
| 20 |
> |
#define MAXFORK 3 /* allotment of duped processes */ |
| 21 |
|
#endif |
| 22 |
|
|
| 23 |
|
/* rpict command */ |
| 123 |
|
} |
| 124 |
|
init(argc, argv); |
| 125 |
|
rpiece(); |
| 126 |
< |
rval = cleanup(); |
| 126 |
> |
rval = cleanup(0); |
| 127 |
|
exit(rval); |
| 128 |
|
} |
| 129 |
|
|
| 244 |
|
if (sscanf(buf, "%d %d", xp, yp) == 2) |
| 245 |
|
return(1); |
| 246 |
|
fprintf(stderr, "%s: input format error\n", progname); |
| 247 |
< |
exit(1); |
| 247 |
> |
exit(cleanup(1)); |
| 248 |
|
} |
| 249 |
|
|
| 250 |
|
|
| 251 |
|
int |
| 252 |
< |
cleanup() /* close rpict process and clean up */ |
| 252 |
> |
cleanup(rstat) /* close rpict process and clean up */ |
| 253 |
> |
int rstat; |
| 254 |
|
{ |
| 255 |
< |
register int pid; |
| 255 |
< |
int status, rstat = 0; |
| 255 |
> |
int status; |
| 256 |
|
|
| 257 |
|
free((char *)pbuf); |
| 258 |
|
fclose(torp); |
| 259 |
|
fclose(fromrp); |
| 260 |
< |
while ((pid = wait(&status)) != -1) |
| 260 |
> |
while (wait(&status) != -1) |
| 261 |
|
if (rstat == 0) |
| 262 |
|
rstat = status>>8 & 0xff; |
| 263 |
|
return(rstat); |
| 268 |
|
{ |
| 269 |
|
VIEW pview; |
| 270 |
|
int xorg, yorg; |
| 271 |
< |
|
| 271 |
> |
/* compute view parameters */ |
| 272 |
> |
copystruct(&pview, &ourview); |
| 273 |
> |
switch (ourview.type) { |
| 274 |
> |
case VT_PER: |
| 275 |
> |
pview.horiz = 2.*180./PI*atan( |
| 276 |
> |
tan(PI/180./2.*ourview.horiz)/hmult ); |
| 277 |
> |
pview.vert = 2.*180./PI*atan( |
| 278 |
> |
tan(PI/180./2.*ourview.vert)/vmult ); |
| 279 |
> |
break; |
| 280 |
> |
case VT_PAR: |
| 281 |
> |
case VT_ANG: |
| 282 |
> |
pview.horiz = ourview.horiz / hmult; |
| 283 |
> |
pview.vert = ourview.vert / vmult; |
| 284 |
> |
break; |
| 285 |
> |
case VT_HEM: |
| 286 |
> |
pview.horiz = 2.*180./PI*asin( |
| 287 |
> |
sin(PI/180./2.*ourview.horiz)/hmult ); |
| 288 |
> |
pview.vert = 2.*180./PI*asin( |
| 289 |
> |
sin(PI/180./2.*ourview.vert)/vmult ); |
| 290 |
> |
break; |
| 291 |
> |
default: |
| 292 |
> |
fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
| 293 |
> |
progname, ourview.type); |
| 294 |
> |
exit(cleanup(1)); |
| 295 |
> |
} |
| 296 |
> |
/* render each piece */ |
| 297 |
|
while (nextpiece(&xorg, &yorg)) { |
| 298 |
< |
copystruct(&pview, &ourview); /* compute view for piece */ |
| 299 |
< |
switch (ourview.type) { |
| 275 |
< |
case VT_PER: |
| 276 |
< |
pview.horiz = 2.*180./PI*atan( |
| 277 |
< |
tan(PI/180./2.*ourview.horiz)/hmult ); |
| 278 |
< |
pview.vert = 2.*180./PI*atan( |
| 279 |
< |
tan(PI/180./2.*ourview.vert)/vmult ); |
| 280 |
< |
break; |
| 281 |
< |
case VT_PAR: |
| 282 |
< |
case VT_ANG: |
| 283 |
< |
pview.horiz = ourview.horiz / hmult; |
| 284 |
< |
pview.vert = ourview.vert / vmult; |
| 285 |
< |
break; |
| 286 |
< |
case VT_HEM: |
| 287 |
< |
pview.horiz = 2.*180./PI*asin( |
| 288 |
< |
sin(PI/180./2.*ourview.horiz)/hmult ); |
| 289 |
< |
pview.vert = 2.*180./PI*asin( |
| 290 |
< |
sin(PI/180./2.*ourview.vert)/vmult ); |
| 291 |
< |
break; |
| 292 |
< |
default: |
| 293 |
< |
fprintf(stderr, "%s: unknown view type '-vt%c'\n", |
| 294 |
< |
progname, ourview.type); |
| 295 |
< |
exit(1); |
| 296 |
< |
} |
| 297 |
< |
pview.hoff += xorg - 0.5*(hmult-1); |
| 298 |
< |
pview.voff += yorg - 0.5*(vmult-1); |
| 298 |
> |
pview.hoff = ourview.hoff + xorg - 0.5*(hmult-1); |
| 299 |
> |
pview.voff = ourview.voff + yorg - 0.5*(vmult-1); |
| 300 |
|
fputs(VIEWSTR, torp); |
| 301 |
|
fprintview(&pview, torp); |
| 302 |
|
putc('\n', torp); |
| 303 |
< |
fflush(torp); /* assign piece to rpict */ |
| 303 |
> |
fflush(torp); /* assigns piece to rpict */ |
| 304 |
|
putpiece(xorg, yorg); /* place piece in output */ |
| 305 |
|
if (verbose) { /* notify caller */ |
| 306 |
|
printf("%d %d done\n", xorg, yorg); |
| 322 |
|
if (xpos < 0 | ypos < 0 | xpos >= hmult | ypos >= vmult) { |
| 323 |
|
fprintf(stderr, "%s: requested piece (%d,%d) out of range\n", |
| 324 |
|
progname, xpos, ypos); |
| 325 |
< |
exit(1); |
| 325 |
> |
exit(cleanup(1)); |
| 326 |
|
} |
| 327 |
|
/* check header from rpict */ |
| 328 |
|
getheader(fromrp, NULL); |
| 329 |
< |
if (fscnresolu(&hr, &vr, fromrp) < 0 || hr != hres || vr != vres) { |
| 329 |
> |
if (fscnresolu(&hr, &vr, fromrp) < 0 || hr != hres | vr != vres) { |
| 330 |
|
fprintf(stderr, "%s: resolution mismatch from %s\n", |
| 331 |
|
progname, rpargv[0]); |
| 332 |
< |
exit(1); |
| 332 |
> |
exit(cleanup(1)); |
| 333 |
|
} |
| 334 |
|
/* load new piece into buffer */ |
| 335 |
|
for (y = 0; y < vr; y++) |
| 336 |
|
if (freadcolrs(pbuf+y*hr, hr, fromrp) < 0) { |
| 337 |
|
fprintf(stderr, "%s: read error from %s\n", |
| 338 |
|
progname, rpargv[0]); |
| 339 |
< |
exit(1); |
| 339 |
> |
exit(cleanup(1)); |
| 340 |
|
} |
| 341 |
|
#if MAXFORK |
| 342 |
|
/* fork so we don't slow rpict down */ |
| 343 |
|
if ((pid = fork()) > 0) { |
| 344 |
< |
if (++nforked > MAXFORK) { |
| 344 |
> |
if (++nforked >= MAXFORK) { |
| 345 |
|
wait(&status); /* reap a child */ |
| 346 |
|
if (status) |
| 347 |
< |
exit(status>>8 & 0xff); |
| 347 |
> |
exit(cleanup(status>>8 & 0xff)); |
| 348 |
|
nforked--; |
| 349 |
|
} |
| 350 |
|
return(pid); |
