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/* Copyright (c) 1996 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id"; |
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#endif |
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|
4 |
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/* |
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* rpict.c - routines and variables for picture generation. |
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*/ |
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#include "copyright.h" |
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|
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#include "platform.h" |
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#include "ray.h" |
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#include "paths.h" |
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|
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#include <sys/types.h> |
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#ifndef NIX |
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#ifndef NON_POSIX |
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#ifdef BSD |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#endif |
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#endif |
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|
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extern time_t time(); |
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#include <time.h> |
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#include <signal.h> |
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|
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#include "view.h" |
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#include "resolu.h" |
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|
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#include "random.h" |
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|
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#include "paths.h" |
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#include "rtmisc.h" /* myhostname() */ |
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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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#ifdef SIGIO /* XXX can we live without this? */ |
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#define SIGCONT SIGIO |
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#endif |
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#endif |
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|
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CUBE thescene; /* our scene */ |
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OBJECT nsceneobjs; /* number of objects in our scene */ |
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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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|
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extern void ambnotify(); |
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void (*addobjnotify[])() = {ambnotify, NULL}; |
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|
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VIEW ourview = STDVIEW; /* view parameters */ |
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int hresolu = 512; /* horizontal resolution */ |
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int vresolu = 512; /* vertical resolution */ |
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|
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double mblur = 0.; /* motion blur parameter */ |
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|
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void (*trace)() = NULL; /* trace call */ |
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|
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int do_irrad = 0; /* compute irradiance? */ |
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|
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .05; /* shadow threshold */ |
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double shadcert = .5; /* shadow certainty */ |
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|
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int backvis = 1; /* back face visibility */ |
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|
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int maxdepth = 6; /* maximum recursion depth */ |
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double minweight = 5e-3; /* minimum ray weight */ |
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int maxdepth = 7; /* maximum recursion depth */ |
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double minweight = 4e-3; /* minimum ray weight */ |
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|
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char *ambfile = NULL; /* ambient file name */ |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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int ambvwt = 0; /* initial weight for ambient value */ |
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double ambacc = 0.2; /* ambient accuracy */ |
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int ambres = 32; /* ambient resolution */ |
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int ambdiv = 128; /* ambient divisions */ |
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int ambssamp = 0; /* ambient super-samples */ |
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double ambacc = 0.15; /* ambient accuracy */ |
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int ambres = 64; /* ambient resolution */ |
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int ambdiv = 512; /* ambient divisions */ |
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int ambssamp = 128; /* ambient super-samples */ |
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int ambounce = 0; /* ambient bounces */ |
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char *amblist[128]; /* ambient include/exclude list */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
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|
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#ifdef MSDOS |
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int ralrm = 60; /* seconds between reports */ |
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#else |
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int ralrm = 0; /* seconds between reports */ |
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#endif |
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|
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double pctdone = 0.0; /* percentage done */ |
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|
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time_t tlastrept = 0L; /* time at last report */ |
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time_t tstart; /* starting time */ |
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|
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extern time_t tstart; /* starting time */ |
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|
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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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static VIEW lastview; /* the previous view input */ |
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extern char *mktemp(); |
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extern char *mktemp(); /* XXX should be in stdlib.h or unistd.h */ |
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|
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void report(); |
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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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#ifdef RHAS_STAT |
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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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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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#else |
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#define file_exists(f) (access(f,F_OK)==0) |
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#endif |
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void |
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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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#ifndef NON_POSIX |
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headclean(); /* delete header file */ |
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pfclean(); /* clean up persist files */ |
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#endif |
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exit(code); |
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} |
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|
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#ifndef NIX |
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#ifndef NON_POSIX |
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void |
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report() /* report progress */ |
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{ |
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extern char *myhostname(); |
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double u, s; |
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#ifdef BSD |
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struct rusage rubuf; |
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nrays, pctdone, u/3600., s/3600., |
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(tlastrept-tstart)/3600., myhostname()); |
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eputs(errmsg); |
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#ifndef BSD |
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#ifdef SIGCONT |
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signal(SIGCONT, report); |
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#endif |
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} |
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#else |
191 |
+ |
void |
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report() /* report progress */ |
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{ |
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tlastrept = time((time_t *)NULL); |
199 |
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#endif |
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+ |
void |
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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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*/ |
217 |
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{ |
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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; |
220 |
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register char *cp; |
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setview(&ourview); |
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prvr = fbuf; /* mark for renaming */ |
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} |
247 |
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if (pout != NULL & prvr != NULL) { |
247 |
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if ((pout != NULL) & (prvr != NULL)) { |
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sprintf(fbuf, pout, seq); |
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if (!strcmp(prvr, fbuf)) { /* rename */ |
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strcpy(fbuf2, fbuf); |
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cp--; |
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strcpy(cp, RFTEMPLATE); |
256 |
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prvr = mktemp(fbuf2); |
257 |
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if (rename(fbuf, prvr) < 0) |
257 |
> |
if (rename(fbuf, prvr) < 0) { |
258 |
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if (errno == ENOENT) { /* ghost file */ |
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sprintf(errmsg, |
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"new output file \"%s\"", |
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fbuf, prvr); |
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error(SYSTEM, errmsg); |
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} |
270 |
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} |
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} |
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} |
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npicts = 0; /* render sequence */ |
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"cannot open output file \"%s\"", fbuf); |
293 |
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error(SYSTEM, errmsg); |
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} |
295 |
< |
#ifdef MSDOS |
286 |
< |
setmode(fileno(stdout), O_BINARY); |
287 |
< |
#endif |
295 |
> |
SET_FILE_BINARY(stdout); |
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dupheader(); |
297 |
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} |
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hres = hresolu; vres = vresolu; pa = pixaspect; |
299 |
< |
if (prvr != NULL) |
300 |
< |
if (viewfile(prvr, &ourview, &rs) <= 0 |
293 |
< |
|| rs.or != PIXSTANDARD) { |
299 |
> |
if (prvr != NULL) { |
300 |
> |
if (viewfile(prvr, &ourview, &rs) <= 0) { |
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sprintf(errmsg, |
302 |
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"cannot recover view parameters from \"%s\"", prvr); |
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error(WARNING, errmsg); |
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hres = scanlen(&rs); |
307 |
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vres = numscans(&rs); |
308 |
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} |
309 |
+ |
} |
310 |
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if ((cp = setview(&ourview)) != NULL) |
311 |
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error(USER, cp); |
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normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
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putchar('\n'); |
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if (pa < .99 || pa > 1.01) |
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fputaspect(pa, stdout); |
327 |
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fputnow(stdout); |
328 |
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fputformat(COLRFMT, stdout); |
329 |
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putchar('\n'); |
330 |
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if (zout != NULL) |
346 |
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{ |
347 |
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char linebuf[256]; |
348 |
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|
349 |
< |
copystruct(&lastview, &ourview); |
349 |
> |
lastview = ourview; |
350 |
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while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
351 |
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if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
352 |
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return(0); |
357 |
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render(zfile, oldfile) /* render the scene */ |
358 |
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char *zfile, *oldfile; |
359 |
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{ |
351 |
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extern long lseek(); |
360 |
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COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
361 |
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float *zbar[MAXDIV+1]; /* z values */ |
362 |
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char *sampdens; /* previous sample density */ |
367 |
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COLOR *colptr; |
368 |
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float *zptr; |
369 |
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register int i; |
370 |
+ |
/* check for empty image */ |
371 |
+ |
if (hres <= 0 || vres <= 0) { |
372 |
+ |
error(WARNING, "empty output picture"); |
373 |
+ |
fprtresolu(0, 0, stdout); |
374 |
+ |
return; |
375 |
+ |
} |
376 |
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/* allocate scanlines */ |
377 |
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for (i = 0; i <= psample; i++) { |
378 |
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scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
383 |
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ystep = (psample*99+70)/140; |
384 |
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if (hstep > 2) { |
385 |
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i = hres/hstep + 2; |
386 |
< |
if ((sampdens = malloc(i)) == NULL) |
386 |
> |
if ((sampdens = (char *)malloc(i)) == NULL) |
387 |
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goto memerr; |
388 |
|
while (i--) |
389 |
|
sampdens[i] = hstep; |
395 |
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sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
396 |
|
error(SYSTEM, errmsg); |
397 |
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} |
398 |
< |
#ifdef MSDOS |
385 |
< |
setmode(zfd, O_BINARY); |
386 |
< |
#endif |
398 |
> |
SET_FD_BINARY(zfd); |
399 |
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for (i = 0; i <= psample; i++) { |
400 |
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zbar[i] = (float *)malloc(hres*sizeof(float)); |
401 |
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if (zbar[i] == NULL) |
413 |
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if (i >= vres) |
414 |
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goto alldone; |
415 |
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if (zfd != -1 && i > 0 && |
416 |
< |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
416 |
> |
lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
417 |
|
error(SYSTEM, "z-file seek error in render"); |
418 |
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pctdone = 100.0*i/vres; |
419 |
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if (ralrm > 0) /* report init stats */ |
420 |
|
report(); |
421 |
< |
#ifndef BSD |
421 |
> |
#ifdef SIGCONT |
422 |
|
else |
411 |
– |
#endif |
423 |
|
signal(SIGCONT, report); |
424 |
+ |
#endif |
425 |
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ypos = vres-1 - i; /* initialize sampling */ |
426 |
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if (directvis) |
427 |
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init_drawsources(psample); |
447 |
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if (directvis) /* add bitty sources */ |
448 |
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drawsources(scanbar, zbar, 0, hres, ypos, ystep); |
449 |
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/* write it out */ |
450 |
< |
#ifndef BSD |
450 |
> |
#ifdef SIGCONT |
451 |
|
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
452 |
|
#endif |
453 |
|
for (i = ystep; i > 0; i--) { |
464 |
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pctdone = 100.0*(vres-1-ypos)/vres; |
465 |
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if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
466 |
|
report(); |
467 |
< |
#ifndef BSD |
467 |
> |
#ifdef SIGCONT |
468 |
|
else |
469 |
|
signal(SIGCONT, report); |
470 |
|
#endif |
471 |
|
} |
472 |
|
/* clean up */ |
473 |
+ |
#ifdef SIGCONT |
474 |
|
signal(SIGCONT, SIG_IGN); |
475 |
+ |
#endif |
476 |
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if (zfd != -1 && write(zfd, (char *)zbar[0], hres*sizeof(float)) |
477 |
|
< hres*sizeof(float)) |
478 |
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goto writerr; |
484 |
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if (close(zfd) == -1) |
485 |
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goto writerr; |
486 |
|
for (i = 0; i <= psample; i++) |
487 |
< |
free((char *)zbar[i]); |
487 |
> |
free((void *)zbar[i]); |
488 |
|
} |
489 |
|
for (i = 0; i <= psample; i++) |
490 |
< |
free((char *)scanbar[i]); |
490 |
> |
free((void *)scanbar[i]); |
491 |
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if (sampdens != NULL) |
492 |
|
free(sampdens); |
493 |
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pctdone = 100.0; |
494 |
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if (ralrm > 0) |
495 |
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report(); |
496 |
+ |
#ifdef SIGCONT |
497 |
|
signal(SIGCONT, SIG_DFL); |
498 |
+ |
#endif |
499 |
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return; |
500 |
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writerr: |
501 |
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error(SYSTEM, "write error in render"); |
681 |
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error(WARNING, errmsg); |
682 |
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goto gotzip; |
683 |
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} |
684 |
< |
#ifdef MSDOS |
669 |
< |
setmode(fileno(fp), O_BINARY); |
670 |
< |
#endif |
684 |
> |
SET_FILE_BINARY(fp); |
685 |
|
/* discard header */ |
686 |
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getheader(fp, NULL, NULL); |
687 |
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/* get picture size */ |
710 |
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} |
711 |
|
if (fflush(stdout) == EOF) |
712 |
|
goto writerr; |
713 |
< |
free((char *)scanline); |
713 |
> |
free((void *)scanline); |
714 |
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fclose(fp); |
715 |
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unlink(oldfile); |
716 |
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return(y); |