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#ifndef lint |
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< |
static const char RCSid[] = "$Id"; |
2 |
> |
static const char RCSid[] = "$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 "ray.h" |
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#include <sys/types.h> |
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|
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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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#include "platform.h" |
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#ifdef NON_POSIX |
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#ifdef MINGW |
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#include <sys/time.h> |
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#endif |
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#else |
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#include <sys/times.h> |
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#include <unistd.h> |
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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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> |
#else |
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#include <sys/times.h> |
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#include <unistd.h> |
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#endif |
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#endif |
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#endif |
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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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void (*addobjnotify[])() = {ambnotify, NULL}; |
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VIEW ourview = STDVIEW; /* view parameters */ |
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double mblur = 0.; /* motion blur parameter */ |
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double dblur = 0.; /* depth-of-field blur parameter */ |
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|
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void (*trace)() = NULL; /* trace call */ |
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int do_irrad = 0; /* compute irradiance? */ |
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int rand_samp = 0; /* pure Monte Carlo sampling? */ |
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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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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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|
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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 */ |
102 |
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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 */ |
102 |
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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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char *amblist[AMBLLEN]; /* ambient include/exclude list */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
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int ralrm = 0; /* seconds between reports */ |
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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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static void report(int); |
122 |
> |
static int nextview(FILE *fp); |
123 |
> |
static void render(char *zfile, char *oldfile); |
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static void fillscanline(COLOR *scanline, float *zline, char *sd, int xres, |
125 |
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int y, int xstep); |
126 |
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static void fillscanbar(COLOR *scanbar[], float *zbar[], int xres, |
127 |
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int y, int ysize); |
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static int fillsample(COLOR *colline, float *zline, int x, int y, |
129 |
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int xlen, int ylen, int b); |
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static double pixvalue(COLOR col, int x, int y); |
131 |
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static int salvage(char *oldfile); |
132 |
> |
static int pixnumber(int x, int y, int xres, int yres); |
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void report(); |
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double pixvalue(); |
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#ifdef RHAS_ACCESS |
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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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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 |
168 |
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report() /* report progress */ |
167 |
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static void |
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> |
report(int dummy) /* report progress */ |
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{ |
152 |
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extern char *myhostname(); |
170 |
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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 |
208 |
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report() /* report progress */ |
207 |
> |
static void |
208 |
> |
report(int dummy) /* report progress */ |
209 |
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{ |
210 |
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tlastrept = time((time_t *)NULL); |
211 |
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sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
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#endif |
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218 |
< |
void |
219 |
< |
rpict(seq, pout, zout, prvr) /* generate image(s) */ |
220 |
< |
int seq; |
221 |
< |
char *pout, *zout, *prvr; |
218 |
> |
extern void |
219 |
> |
rpict( /* generate image(s) */ |
220 |
> |
int seq, |
221 |
> |
char *pout, |
222 |
> |
char *zout, |
223 |
> |
char *prvr |
224 |
> |
) |
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/* |
226 |
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* If seq is greater than zero, then we will render a sequence of |
227 |
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* images based on view parameter strings read from the standard input. |
263 |
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setview(&ourview); |
264 |
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prvr = fbuf; /* mark for renaming */ |
265 |
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} |
266 |
< |
if (pout != NULL & prvr != NULL) { |
266 |
> |
if ((pout != NULL) & (prvr != NULL)) { |
267 |
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sprintf(fbuf, pout, seq); |
268 |
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if (!strcmp(prvr, fbuf)) { /* rename */ |
269 |
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strcpy(fbuf2, fbuf); |
273 |
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cp--; |
274 |
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strcpy(cp, RFTEMPLATE); |
275 |
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prvr = mktemp(fbuf2); |
276 |
< |
if (rename(fbuf, prvr) < 0) |
276 |
> |
if (rename(fbuf, prvr) < 0) { |
277 |
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if (errno == ENOENT) { /* ghost file */ |
278 |
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sprintf(errmsg, |
279 |
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"new output file \"%s\"", |
286 |
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fbuf, prvr); |
287 |
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error(SYSTEM, errmsg); |
288 |
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} |
289 |
+ |
} |
290 |
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} |
291 |
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} |
292 |
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npicts = 0; /* render sequence */ |
315 |
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dupheader(); |
316 |
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} |
317 |
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hres = hresolu; vres = vresolu; pa = pixaspect; |
318 |
< |
if (prvr != NULL) |
319 |
< |
if (viewfile(prvr, &ourview, &rs) <= 0 |
299 |
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|| rs.rt != PIXSTANDARD) { |
318 |
> |
if (prvr != NULL) { |
319 |
> |
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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} |
328 |
+ |
} |
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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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putchar('\n'); |
344 |
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if (pa < .99 || pa > 1.01) |
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fputaspect(pa, stdout); |
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fputnow(stdout); |
347 |
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fputformat(COLRFMT, stdout); |
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putchar('\n'); |
349 |
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if (zout != NULL) |
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} |
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|
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|
363 |
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nextview(fp) /* get next view from fp */ |
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FILE *fp; |
363 |
> |
static int |
364 |
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nextview( /* get next view from fp */ |
365 |
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FILE *fp |
366 |
> |
) |
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{ |
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char linebuf[256]; |
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|
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copystruct(&lastview, &ourview); |
370 |
> |
lastview = ourview; |
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while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
372 |
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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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|
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|
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render(zfile, oldfile) /* render the scene */ |
379 |
< |
char *zfile, *oldfile; |
378 |
> |
static void |
379 |
> |
render( /* render the scene */ |
380 |
> |
char *zfile, |
381 |
> |
char *oldfile |
382 |
> |
) |
383 |
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{ |
384 |
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COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
385 |
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float *zbar[MAXDIV+1]; /* z values */ |
437 |
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if (i >= vres) |
438 |
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goto alldone; |
439 |
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if (zfd != -1 && i > 0 && |
440 |
< |
lseek(zfd, (off_t)i*hres*sizeof(float), 0) < 0) |
440 |
> |
lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
441 |
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error(SYSTEM, "z-file seek error in render"); |
442 |
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pctdone = 100.0*i/vres; |
443 |
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if (ralrm > 0) /* report init stats */ |
444 |
< |
report(); |
444 |
> |
report(0); |
445 |
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#ifdef SIGCONT |
446 |
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else |
447 |
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signal(SIGCONT, report); |
487 |
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/* record progress */ |
488 |
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pctdone = 100.0*(vres-1-ypos)/vres; |
489 |
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if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
490 |
< |
report(); |
490 |
> |
report(0); |
491 |
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#ifdef SIGCONT |
492 |
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else |
493 |
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signal(SIGCONT, report); |
516 |
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free(sampdens); |
517 |
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pctdone = 100.0; |
518 |
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if (ralrm > 0) |
519 |
< |
report(); |
519 |
> |
report(0); |
520 |
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#ifdef SIGCONT |
521 |
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signal(SIGCONT, SIG_DFL); |
522 |
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#endif |
528 |
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} |
529 |
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|
530 |
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|
531 |
< |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
532 |
< |
register COLOR *scanline; |
533 |
< |
register float *zline; |
534 |
< |
register char *sd; |
535 |
< |
int xres, y, xstep; |
531 |
> |
static void |
532 |
> |
fillscanline( /* fill scan at y */ |
533 |
> |
register COLOR *scanline, |
534 |
> |
register float *zline, |
535 |
> |
register char *sd, |
536 |
> |
int xres, |
537 |
> |
int y, |
538 |
> |
int xstep |
539 |
> |
) |
540 |
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{ |
541 |
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static int nc = 0; /* number of calls */ |
542 |
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int bl = xstep, b = xstep; |
567 |
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} |
568 |
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|
569 |
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|
570 |
< |
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
571 |
< |
register COLOR *scanbar[]; |
572 |
< |
register float *zbar[]; |
573 |
< |
int xres, y, ysize; |
570 |
> |
static void |
571 |
> |
fillscanbar( /* fill interior */ |
572 |
> |
register COLOR *scanbar[], |
573 |
> |
register float *zbar[], |
574 |
> |
int xres, |
575 |
> |
int y, |
576 |
> |
int ysize |
577 |
> |
) |
578 |
|
{ |
579 |
|
COLOR vline[MAXDIV+1]; |
580 |
|
float zline[MAXDIV+1]; |
600 |
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} |
601 |
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|
602 |
|
|
603 |
< |
int |
604 |
< |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
605 |
< |
register COLOR *colline; |
606 |
< |
register float *zline; |
607 |
< |
int x, y; |
608 |
< |
int xlen, ylen; |
609 |
< |
int b; |
603 |
> |
static int |
604 |
> |
fillsample( /* fill interior points */ |
605 |
> |
register COLOR *colline, |
606 |
> |
register float *zline, |
607 |
> |
int x, |
608 |
> |
int y, |
609 |
> |
int xlen, |
610 |
> |
int ylen, |
611 |
> |
int b |
612 |
> |
) |
613 |
|
{ |
614 |
|
double ratio; |
615 |
|
double z; |
656 |
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} |
657 |
|
|
658 |
|
|
659 |
< |
double |
660 |
< |
pixvalue(col, x, y) /* compute pixel value */ |
661 |
< |
COLOR col; /* returned color */ |
662 |
< |
int x, y; /* pixel position */ |
659 |
> |
static double |
660 |
> |
pixvalue( /* compute pixel value */ |
661 |
> |
COLOR col, /* returned color */ |
662 |
> |
int x, /* pixel position */ |
663 |
> |
int y |
664 |
> |
) |
665 |
|
{ |
666 |
|
RAY thisray; |
667 |
|
FVECT lorg, ldir; |
668 |
< |
double hpos, vpos, lmax, d; |
668 |
> |
double hpos, vpos, vdist, lmax; |
669 |
> |
register int i; |
670 |
|
/* compute view ray */ |
671 |
|
hpos = (x+pixjitter())/hres; |
672 |
|
vpos = (y+pixjitter())/vres; |
675 |
|
setcolor(col, 0.0, 0.0, 0.0); |
676 |
|
return(0.0); |
677 |
|
} |
678 |
< |
|
679 |
< |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
680 |
< |
|
678 |
> |
vdist = ourview.vdist; |
679 |
> |
/* set pixel index */ |
680 |
> |
samplendx = pixnumber(x,y,hres,vres); |
681 |
|
/* optional motion blur */ |
682 |
|
if (lastview.type && mblur > FTINY && (lmax = viewray(lorg, ldir, |
683 |
|
&lastview, hpos, vpos)) >= -FTINY) { |
643 |
– |
register int i; |
684 |
|
register double d = mblur*(.5-urand(281+samplendx)); |
685 |
|
|
686 |
|
thisray.rmax = (1.-d)*thisray.rmax + d*lmax; |
690 |
|
} |
691 |
|
if (normalize(thisray.rdir) == 0.0) |
692 |
|
return(0.0); |
693 |
+ |
vdist = (1.-d)*vdist + d*lastview.vdist; |
694 |
|
} |
695 |
+ |
/* optional depth-of-field */ |
696 |
+ |
if (dblur > FTINY && vdist > FTINY) { |
697 |
+ |
double vc, dfh, dfv; |
698 |
+ |
/* square/circle conv. */ |
699 |
+ |
dfh = vc = 1. - 2.*frandom(); |
700 |
+ |
dfv = 1. - 2.*frandom(); |
701 |
+ |
dfh *= .5*dblur*sqrt(1. - .5*dfv*dfv); |
702 |
+ |
dfv *= .5*dblur*sqrt(1. - .5*vc*vc); |
703 |
+ |
if (ourview.type == VT_PER || ourview.type == VT_PAR) { |
704 |
+ |
dfh /= sqrt(ourview.hn2); |
705 |
+ |
dfv /= sqrt(ourview.vn2); |
706 |
+ |
for (i = 3; i--; ) { |
707 |
+ |
vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
708 |
+ |
thisray.rorg[i] += dfh*ourview.hvec[i] + |
709 |
+ |
dfv*ourview.vvec[i] ; |
710 |
+ |
thisray.rdir[i] = vc - thisray.rorg[i]; |
711 |
+ |
} |
712 |
+ |
} else { /* non-standard view case */ |
713 |
+ |
double dfd = PI/4.*dblur*(.5 - frandom()); |
714 |
+ |
if (ourview.type != VT_ANG && ourview.type != VT_PLS) { |
715 |
+ |
if (ourview.type != VT_CYL) |
716 |
+ |
dfh /= sqrt(ourview.hn2); |
717 |
+ |
dfv /= sqrt(ourview.vn2); |
718 |
+ |
} |
719 |
+ |
for (i = 3; i--; ) { |
720 |
+ |
vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
721 |
+ |
thisray.rorg[i] += dfh*ourview.hvec[i] + |
722 |
+ |
dfv*ourview.vvec[i] + |
723 |
+ |
dfd*ourview.vdir[i] ; |
724 |
+ |
thisray.rdir[i] = vc - thisray.rorg[i]; |
725 |
+ |
} |
726 |
+ |
} |
727 |
+ |
if (normalize(thisray.rdir) == 0.0) |
728 |
+ |
return(0.0); |
729 |
+ |
} |
730 |
|
|
731 |
< |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
731 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
732 |
|
|
733 |
|
rayvalue(&thisray); /* trace ray */ |
734 |
|
|
738 |
|
} |
739 |
|
|
740 |
|
|
741 |
< |
int |
742 |
< |
salvage(oldfile) /* salvage scanlines from killed program */ |
743 |
< |
char *oldfile; |
741 |
> |
static int |
742 |
> |
salvage( /* salvage scanlines from killed program */ |
743 |
> |
char *oldfile |
744 |
> |
) |
745 |
|
{ |
746 |
|
COLR *scanline; |
747 |
|
FILE *fp; |
795 |
|
writerr: |
796 |
|
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
797 |
|
error(SYSTEM, errmsg); |
798 |
+ |
return -1; /* pro forma return */ |
799 |
|
} |
800 |
|
|
801 |
< |
|
802 |
< |
int |
803 |
< |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
804 |
< |
register int x, y; |
805 |
< |
int xres, yres; |
801 |
> |
static int |
802 |
> |
pixnumber( /* compute pixel index (brushed) */ |
803 |
> |
register int x, |
804 |
> |
register int y, |
805 |
> |
int xres, |
806 |
> |
int yres |
807 |
> |
) |
808 |
|
{ |
809 |
|
x -= y; |
810 |
|
while (x < 0) |