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#ifndef lint |
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static const char RCSid[] = "$Id"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* rpict.c - routines and variables for picture generation. |
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#include "copyright.h" |
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#include "platform.h" |
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#include "ray.h" |
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#include <sys/types.h> |
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#ifndef NON_POSIX |
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#include <time.h> |
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#include <signal.h> |
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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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#include "ambient.h" |
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#include "view.h" |
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#include "random.h" |
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#include "paths.h" |
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#include "rtmisc.h" /* myhostname() */ |
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#define RFTEMPLATE "rfXXXXXX" |
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int ndims = 0; /* number of sampling dimensions */ |
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int samplendx; /* sample index number */ |
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extern void ambnotify(); |
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//extern void ambnotify(); |
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void (*addobjnotify[])() = {ambnotify, NULL}; |
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VIEW ourview = STDVIEW; /* view parameters */ |
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int backvis = 1; /* back face visibility */ |
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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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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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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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static VIEW lastview; /* the previous view input */ |
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extern char *mktemp(); /* XXX should be in stdlib.h or unistd.h */ |
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//extern char *mktemp(); /* XXX should be in stdlib.h or unistd.h */ |
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void report(); |
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//double pixvalue(); |
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double pixvalue(); |
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static void report(int); |
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static int nextview(FILE *fp); |
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static void render(char *zfile, char *oldfile); |
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static void fillscanline(COLOR *scanline, float *zline, char *sd, int xres, |
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int y, int xstep); |
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static void fillscanbar(COLOR *scanbar[], float *zbar[], int xres, |
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int y, int ysize); |
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static int fillsample(COLOR *colline, float *zline, int x, int y, |
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int xlen, int ylen, int b); |
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static double pixvalue(COLOR col, int x, int y); |
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static int salvage(char *oldfile); |
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static int pixnumber(int x, int y, int xres, int yres); |
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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 code; |
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{ |
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if (code) /* report status */ |
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report(); |
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report(0); |
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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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#ifndef NON_POSIX |
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void |
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report() /* report progress */ |
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static void |
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report(int dummy) /* 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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#endif |
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} |
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#else |
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void |
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report() /* report progress */ |
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static void |
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report(int) /* report progress */ |
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{ |
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tlastrept = time((time_t *)NULL); |
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sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
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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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extern void |
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rpict( /* generate image(s) */ |
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int seq, |
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char *pout, |
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char *zout, |
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char *prvr |
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) |
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/* |
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* If seq is greater than zero, then we will render a sequence of |
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* images based on view parameter strings read from the standard input. |
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setview(&ourview); |
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prvr = fbuf; /* mark for renaming */ |
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} |
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if (pout != NULL & prvr != NULL) { |
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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); |
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prvr = mktemp(fbuf2); |
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if (rename(fbuf, prvr) < 0) |
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if (rename(fbuf, prvr) < 0) { |
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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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} |
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} |
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} |
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} |
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npicts = 0; /* render sequence */ |
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dupheader(); |
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} |
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hres = hresolu; vres = vresolu; pa = pixaspect; |
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if (prvr != NULL) |
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if (viewfile(prvr, &ourview, &rs) <= 0 |
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|| rs.rt != PIXSTANDARD) { |
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if (prvr != NULL) { |
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if (viewfile(prvr, &ourview, &rs) <= 0) { |
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sprintf(errmsg, |
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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); |
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vres = numscans(&rs); |
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} |
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} |
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if ((cp = setview(&ourview)) != NULL) |
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error(USER, cp); |
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normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
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} |
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nextview(fp) /* get next view from fp */ |
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FILE *fp; |
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static int |
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nextview( /* get next view from fp */ |
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FILE *fp |
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) |
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{ |
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char linebuf[256]; |
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copystruct(&lastview, &ourview); |
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lastview = ourview; |
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while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
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if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
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return(0); |
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} |
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render(zfile, oldfile) /* render the scene */ |
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char *zfile, *oldfile; |
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static void |
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render( /* render the scene */ |
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char *zfile, |
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char *oldfile |
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) |
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{ |
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COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
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float *zbar[MAXDIV+1]; /* z values */ |
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if (i >= vres) |
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goto alldone; |
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if (zfd != -1 && i > 0 && |
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lseek(zfd, (off_t)i*hres*sizeof(float), 0) < 0) |
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lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
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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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report(0); |
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#ifdef SIGCONT |
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else |
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signal(SIGCONT, report); |
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/* record progress */ |
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pctdone = 100.0*(vres-1-ypos)/vres; |
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if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
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report(); |
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report(0); |
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#ifdef SIGCONT |
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else |
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signal(SIGCONT, report); |
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free(sampdens); |
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pctdone = 100.0; |
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if (ralrm > 0) |
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report(); |
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report(0); |
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#ifdef SIGCONT |
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signal(SIGCONT, SIG_DFL); |
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#endif |
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} |
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fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
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register COLOR *scanline; |
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register float *zline; |
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register char *sd; |
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int xres, y, xstep; |
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static void |
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fillscanline( /* fill scan at y */ |
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register COLOR *scanline, |
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register float *zline, |
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register char *sd, |
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int xres, |
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int y, |
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int xstep |
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) |
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{ |
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static int nc = 0; /* number of calls */ |
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int bl = xstep, b = xstep; |
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} |
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fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
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register COLOR *scanbar[]; |
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register float *zbar[]; |
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int xres, y, ysize; |
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static void |
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fillscanbar( /* fill interior */ |
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register COLOR *scanbar[], |
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register float *zbar[], |
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int xres, |
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int y, |
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int ysize |
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) |
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{ |
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COLOR vline[MAXDIV+1]; |
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float zline[MAXDIV+1]; |
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} |
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int |
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fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
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register COLOR *colline; |
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register float *zline; |
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int x, y; |
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int xlen, ylen; |
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int b; |
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static int |
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fillsample( /* fill interior points */ |
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register COLOR *colline, |
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register float *zline, |
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int x, |
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int y, |
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int xlen, |
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int ylen, |
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int b |
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) |
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{ |
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double ratio; |
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double z; |
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} |
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double |
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pixvalue(col, x, y) /* compute pixel value */ |
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COLOR col; /* returned color */ |
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int x, y; /* pixel position */ |
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static double |
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pixvalue( /* compute pixel value */ |
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COLOR col, /* returned color */ |
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int x, /* pixel position */ |
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int y |
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) |
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{ |
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RAY thisray; |
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FVECT lorg, ldir; |
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double hpos, vpos, lmax, d; |
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double hpos, vpos, lmax; |
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/* compute view ray */ |
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hpos = (x+pixjitter())/hres; |
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vpos = (y+pixjitter())/vres; |
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} |
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int |
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salvage(oldfile) /* salvage scanlines from killed program */ |
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char *oldfile; |
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> |
static int |
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salvage( /* salvage scanlines from killed program */ |
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char *oldfile |
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) |
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{ |
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COLR *scanline; |
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FILE *fp; |
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writerr: |
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sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
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error(SYSTEM, errmsg); |
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return -1; /* pro forma return */ |
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} |
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int |
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pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
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register int x, y; |
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int xres, yres; |
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static int |
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pixnumber( /* compute pixel index (brushed) */ |
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register int x, |
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register int y, |
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int xres, |
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int yres |
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) |
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{ |
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x -= y; |
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while (x < 0) |