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#include "paths.h" |
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|
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#define RFTEMPLATE "rfXXXXXX" |
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|
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#ifndef SIGCONT |
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#define SIGCONT SIGIO |
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#endif |
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|
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int dimlist[MAXDIM]; /* sampling dimensions */ |
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int ndims = 0; /* number of sampling dimensions */ |
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int samplendx; /* sample index number */ |
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double shadcert = .5; /* shadow certainty */ |
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int directrelay = 1; /* number of source relays */ |
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int vspretest = 512; /* virtual source pretest density */ |
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int directinvis = 0; /* sources invisible? */ |
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int directvis = 1; /* sources visible? */ |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
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|
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double specthresh = .15; /* specular sampling threshold */ |
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extern long time(); |
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extern long tstart; /* starting time */ |
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|
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extern long nrays; /* number of rays traced */ |
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extern unsigned long nrays; /* number of rays traced */ |
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|
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#define MAXDIV 16 /* maximum sample size */ |
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|
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
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|
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#define RFTEMPLATE "rfXXXXXX" |
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#define HFTEMPLATE TEMPLATE |
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|
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static char *hfname = NULL; /* header file name */ |
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static FILE *hfp = NULL; /* header file pointer */ |
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|
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static int hres, vres; /* resolution for this frame */ |
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|
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extern char *mktemp(); |
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|
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double pixvalue(); |
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|
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#ifdef NIX |
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#define file_exists(f) (access(f,F_OK)==0) |
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#else |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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int |
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file_exists(fname) /* ordinary file exists? */ |
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char *fname; |
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{ |
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struct stat sbuf; |
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if (stat(fname, &sbuf) < 0) return(0); |
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return((sbuf.st_mode & S_IFREG) != 0); |
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} |
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#endif |
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|
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|
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quit(code) /* quit program */ |
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int code; |
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{ |
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if (code) /* report status */ |
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report(); |
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if (hfname != NULL) { /* delete header file */ |
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if (hfp != NULL) |
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fclose(hfp); |
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unlink(hfname); |
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} |
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headclean(); /* delete header file */ |
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pfclean(); /* clean up persist files */ |
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exit(code); |
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} |
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t += (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
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t += rubuf.ru_utime.tv_sec + rubuf.ru_stime.tv_sec; |
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|
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sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f CPU hours\n", |
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sprintf(errmsg, "%lu rays, %4.2f%% done after %5.4f CPU hours\n", |
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nrays, pctdone, t/3600.0); |
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eputs(errmsg); |
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tlastrept = time((long *)0); |
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report() /* report progress */ |
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{ |
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tlastrept = time((long *)0); |
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sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f hours\n", |
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sprintf(errmsg, "%lu rays, %4.2f%% done after %5.4f hours\n", |
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nrays, pctdone, (tlastrept-tstart)/3600.0); |
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eputs(errmsg); |
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signal(SIGALRM, report); |
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signal(SIGCONT, report); |
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} |
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#endif |
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|
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|
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openheader() /* save standard output to header file */ |
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{ |
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hfname = mktemp(HFTEMPLATE); |
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if (freopen(hfname, "w", stdout) == NULL) { |
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sprintf(errmsg, "cannot open header file \"%s\"", hfname); |
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error(SYSTEM, errmsg); |
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} |
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} |
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|
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|
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dupheader() /* repeat header on standard output */ |
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{ |
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register int c; |
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|
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if (hfp == NULL) { |
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if ((hfp = fopen(hfname, "r")) == NULL) |
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error(SYSTEM, "error reopening header file"); |
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#ifdef MSDOS |
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setmode(fileno(hfp), O_BINARY); |
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#endif |
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} else if (fseek(hfp, 0L, 0) < 0) |
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error(SYSTEM, "seek error on header file"); |
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while ((c = getc(hfp)) != EOF) |
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putchar(c); |
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} |
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|
168 |
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|
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rpict(seq, pout, zout, prvr) /* generate image(s) */ |
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int seq; |
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char *pout, *zout, *prvr; |
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* sequenced file naming. |
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*/ |
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{ |
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extern char *rindex(), *strncpy(), *strcat(); |
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extern char *rindex(), *strncpy(), *strcat(), *strcpy(); |
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char fbuf[128], fbuf2[128]; |
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int npicts; |
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register char *cp; |
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RESOLU rs; |
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double pa; |
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} |
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} |
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} |
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/* render sequence */ |
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npicts = 0; /* render sequence */ |
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do { |
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if (seq && nextview(stdin) == EOF) |
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break; |
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pctdone = 0.0; |
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if (pout != NULL) { |
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sprintf(fbuf, pout, seq); |
223 |
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if (file_exists(fbuf)) { |
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if (prvr != NULL || !strcmp(fbuf, pout)) { |
225 |
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sprintf(errmsg, |
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"output file \"%s\" exists", |
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fbuf); |
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error(USER, errmsg); |
229 |
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} |
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continue; /* don't clobber */ |
231 |
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} |
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if (freopen(fbuf, "w", stdout) == NULL) { |
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sprintf(errmsg, |
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"cannot open output file \"%s\"", fbuf); |
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cp = NULL; |
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render(cp, prvr); |
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prvr = NULL; |
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npicts++; |
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} while (seq++); |
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/* check that we did something */ |
282 |
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if (npicts == 0) |
283 |
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error(WARNING, "no output produced"); |
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} |
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|
286 |
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|
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sampdens[i] = hstep; |
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} else |
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sampdens = NULL; |
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/* open z file */ |
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/* open z-file */ |
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if (zfile != NULL) { |
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if ((zfd = open(zfile, O_WRONLY|O_CREAT, 0666)) == -1) { |
332 |
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sprintf(errmsg, "cannot open z file \"%s\"", zfile); |
332 |
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sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
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error(SYSTEM, errmsg); |
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} |
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#ifdef MSDOS |
351 |
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i = salvage(oldfile); |
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if (zfd != -1 && i > 0 && |
353 |
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lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
354 |
< |
error(SYSTEM, "z file seek error in render"); |
354 |
> |
error(SYSTEM, "z-file seek error in render"); |
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pctdone = 100.0*i/vres; |
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if (ralrm > 0) /* report init stats */ |
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report(); |
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#ifndef BSD |
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else |
360 |
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#endif |
361 |
< |
signal(SIGALRM, report); |
361 |
> |
signal(SIGCONT, report); |
362 |
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ypos = vres-1 - i; |
363 |
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fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
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/* compute scanlines */ |
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fillscanbar(scanbar, zbar, hres, ypos, ystep); |
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/* write it out */ |
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#ifndef BSD |
384 |
< |
signal(SIGALRM, SIG_IGN); /* don't interrupt writes */ |
384 |
> |
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
385 |
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#endif |
386 |
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for (i = ystep; i > 0; i--) { |
387 |
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if (zfd != -1 && write(zfd, (char *)zbar[i], |
399 |
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report(); |
400 |
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#ifndef BSD |
401 |
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else |
402 |
< |
signal(SIGALRM, report); |
402 |
> |
signal(SIGCONT, report); |
403 |
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#endif |
404 |
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} |
405 |
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/* clean up */ |
406 |
< |
signal(SIGALRM, SIG_IGN); |
406 |
> |
signal(SIGCONT, SIG_IGN); |
407 |
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if (zfd != -1) { |
408 |
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if (write(zfd, (char *)zbar[0], hres*sizeof(float)) |
409 |
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< hres*sizeof(float)) |
423 |
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pctdone = 100.0; |
424 |
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if (ralrm > 0) |
425 |
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report(); |
426 |
+ |
signal(SIGCONT, SIG_DFL); |
427 |
|
return; |
428 |
|
writerr: |
429 |
|
error(SYSTEM, "write error in render"); |