1 |
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#ifndef lint |
2 |
< |
static const char RCSid[] = "$Id$"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
4 |
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/* |
5 |
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* rpict.c - routines and variables for picture generation. |
7 |
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|
8 |
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#include "copyright.h" |
9 |
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|
10 |
– |
#include "ray.h" |
11 |
– |
|
10 |
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#include <sys/types.h> |
11 |
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|
12 |
< |
#ifndef NIX |
12 |
> |
#ifndef NON_POSIX |
13 |
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#ifdef BSD |
14 |
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#include <sys/time.h> |
15 |
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#include <sys/resource.h> |
19 |
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#endif |
20 |
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#endif |
21 |
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|
22 |
< |
extern time_t time(); |
25 |
< |
|
22 |
> |
#include <time.h> |
23 |
|
#include <signal.h> |
24 |
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|
25 |
+ |
#include "platform.h" |
26 |
+ |
#include "ray.h" |
27 |
+ |
#include "paths.h" |
28 |
+ |
#include "ambient.h" |
29 |
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#include "view.h" |
29 |
– |
|
30 |
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#include "random.h" |
31 |
– |
|
31 |
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#include "paths.h" |
32 |
+ |
#include "rtmisc.h" /* myhostname() */ |
33 |
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|
34 |
+ |
|
35 |
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#define RFTEMPLATE "rfXXXXXX" |
36 |
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|
37 |
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#ifndef SIGCONT |
38 |
+ |
#ifdef SIGIO /* XXX can we live without this? */ |
39 |
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#define SIGCONT SIGIO |
40 |
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#endif |
41 |
+ |
#endif |
42 |
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|
43 |
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CUBE thescene; /* our scene */ |
44 |
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OBJECT nsceneobjs; /* number of objects in our scene */ |
47 |
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int ndims = 0; /* number of sampling dimensions */ |
48 |
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int samplendx; /* sample index number */ |
49 |
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|
50 |
< |
extern void ambnotify(); |
50 |
> |
//extern void ambnotify(); |
51 |
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void (*addobjnotify[])() = {ambnotify, NULL}; |
52 |
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|
53 |
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VIEW ourview = STDVIEW; /* view parameters */ |
61 |
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|
62 |
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double mblur = 0.; /* motion blur parameter */ |
63 |
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|
64 |
+ |
double dblur = 0.; /* depth-of-field blur parameter */ |
65 |
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|
66 |
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void (*trace)() = NULL; /* trace call */ |
67 |
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|
68 |
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int do_irrad = 0; /* compute irradiance? */ |
69 |
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|
70 |
+ |
int rand_samp = 0; /* pure Monte Carlo sampling? */ |
71 |
+ |
|
72 |
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double dstrsrc = 0.0; /* square source distribution */ |
73 |
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double shadthresh = .05; /* shadow threshold */ |
74 |
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double shadcert = .5; /* shadow certainty */ |
87 |
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|
88 |
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int backvis = 1; /* back face visibility */ |
89 |
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|
90 |
< |
int maxdepth = 6; /* maximum recursion depth */ |
91 |
< |
double minweight = 5e-3; /* minimum ray weight */ |
90 |
> |
int maxdepth = 7; /* maximum recursion depth */ |
91 |
> |
double minweight = 4e-3; /* minimum ray weight */ |
92 |
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|
93 |
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char *ambfile = NULL; /* ambient file name */ |
94 |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
95 |
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int ambvwt = 0; /* initial weight for ambient value */ |
96 |
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double ambacc = 0.2; /* ambient accuracy */ |
97 |
< |
int ambres = 32; /* ambient resolution */ |
98 |
< |
int ambdiv = 128; /* ambient divisions */ |
99 |
< |
int ambssamp = 0; /* ambient super-samples */ |
97 |
> |
int ambres = 64; /* ambient resolution */ |
98 |
> |
int ambdiv = 512; /* ambient divisions */ |
99 |
> |
int ambssamp = 128; /* ambient super-samples */ |
100 |
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int ambounce = 0; /* ambient bounces */ |
101 |
< |
char *amblist[128]; /* ambient include/exclude list */ |
101 |
> |
char *amblist[AMBLLEN]; /* ambient include/exclude list */ |
102 |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
103 |
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|
104 |
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int ralrm = 0; /* seconds between reports */ |
115 |
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|
116 |
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static VIEW lastview; /* the previous view input */ |
117 |
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|
118 |
< |
extern char *mktemp(); |
118 |
> |
//extern char *mktemp(); /* XXX should be in stdlib.h or unistd.h */ |
119 |
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|
120 |
< |
void report(); |
120 |
> |
//double pixvalue(); |
121 |
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|
122 |
< |
double pixvalue(); |
122 |
> |
static void report(int); |
123 |
> |
static int nextview(FILE *fp); |
124 |
> |
static void render(char *zfile, char *oldfile); |
125 |
> |
static void fillscanline(COLOR *scanline, float *zline, char *sd, int xres, |
126 |
> |
int y, int xstep); |
127 |
> |
static void fillscanbar(COLOR *scanbar[], float *zbar[], int xres, |
128 |
> |
int y, int ysize); |
129 |
> |
static int fillsample(COLOR *colline, float *zline, int x, int y, |
130 |
> |
int xlen, int ylen, int b); |
131 |
> |
static double pixvalue(COLOR col, int x, int y); |
132 |
> |
static int salvage(char *oldfile); |
133 |
> |
static int pixnumber(int x, int y, int xres, int yres); |
134 |
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|
135 |
< |
#ifdef NIX |
136 |
< |
#define file_exists(f) (access(f,F_OK)==0) |
137 |
< |
#else |
135 |
> |
|
136 |
> |
|
137 |
> |
#ifdef RHAS_STAT |
138 |
|
#include <sys/types.h> |
139 |
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#include <sys/stat.h> |
140 |
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int |
145 |
|
if (stat(fname, &sbuf) < 0) return(0); |
146 |
|
return((sbuf.st_mode & S_IFREG) != 0); |
147 |
|
} |
148 |
+ |
#else |
149 |
+ |
#define file_exists(f) (access(f,F_OK)==0) |
150 |
|
#endif |
151 |
|
|
152 |
|
|
155 |
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int code; |
156 |
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{ |
157 |
|
if (code) /* report status */ |
158 |
< |
report(); |
159 |
< |
#ifndef NIX |
158 |
> |
report(0); |
159 |
> |
#ifndef NON_POSIX |
160 |
|
headclean(); /* delete header file */ |
161 |
|
pfclean(); /* clean up persist files */ |
162 |
|
#endif |
164 |
|
} |
165 |
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|
166 |
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|
167 |
< |
#ifndef NIX |
168 |
< |
void |
169 |
< |
report() /* report progress */ |
167 |
> |
#ifndef NON_POSIX |
168 |
> |
static void |
169 |
> |
report(int dummy) /* report progress */ |
170 |
|
{ |
151 |
– |
extern char *myhostname(); |
171 |
|
double u, s; |
172 |
|
#ifdef BSD |
173 |
|
struct rusage rubuf; |
200 |
|
nrays, pctdone, u/3600., s/3600., |
201 |
|
(tlastrept-tstart)/3600., myhostname()); |
202 |
|
eputs(errmsg); |
203 |
< |
#ifndef BSD |
203 |
> |
#ifdef SIGCONT |
204 |
|
signal(SIGCONT, report); |
205 |
|
#endif |
206 |
|
} |
207 |
|
#else |
208 |
< |
void |
209 |
< |
report() /* report progress */ |
208 |
> |
static void |
209 |
> |
report(int dummy) /* report progress */ |
210 |
|
{ |
211 |
|
tlastrept = time((time_t *)NULL); |
212 |
|
sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
216 |
|
#endif |
217 |
|
|
218 |
|
|
219 |
< |
void |
220 |
< |
rpict(seq, pout, zout, prvr) /* generate image(s) */ |
221 |
< |
int seq; |
222 |
< |
char *pout, *zout, *prvr; |
219 |
> |
extern void |
220 |
> |
rpict( /* generate image(s) */ |
221 |
> |
int seq, |
222 |
> |
char *pout, |
223 |
> |
char *zout, |
224 |
> |
char *prvr |
225 |
> |
) |
226 |
|
/* |
227 |
|
* If seq is greater than zero, then we will render a sequence of |
228 |
|
* images based on view parameter strings read from the standard input. |
235 |
|
* sequenced file naming. |
236 |
|
*/ |
237 |
|
{ |
216 |
– |
extern char *rindex(), *strncpy(), *strcat(), *strcpy(); |
238 |
|
char fbuf[128], fbuf2[128]; |
239 |
|
int npicts; |
240 |
|
register char *cp; |
264 |
|
setview(&ourview); |
265 |
|
prvr = fbuf; /* mark for renaming */ |
266 |
|
} |
267 |
< |
if (pout != NULL & prvr != NULL) { |
267 |
> |
if ((pout != NULL) & (prvr != NULL)) { |
268 |
|
sprintf(fbuf, pout, seq); |
269 |
|
if (!strcmp(prvr, fbuf)) { /* rename */ |
270 |
|
strcpy(fbuf2, fbuf); |
274 |
|
cp--; |
275 |
|
strcpy(cp, RFTEMPLATE); |
276 |
|
prvr = mktemp(fbuf2); |
277 |
< |
if (rename(fbuf, prvr) < 0) |
277 |
> |
if (rename(fbuf, prvr) < 0) { |
278 |
|
if (errno == ENOENT) { /* ghost file */ |
279 |
|
sprintf(errmsg, |
280 |
|
"new output file \"%s\"", |
287 |
|
fbuf, prvr); |
288 |
|
error(SYSTEM, errmsg); |
289 |
|
} |
290 |
+ |
} |
291 |
|
} |
292 |
|
} |
293 |
|
npicts = 0; /* render sequence */ |
312 |
|
"cannot open output file \"%s\"", fbuf); |
313 |
|
error(SYSTEM, errmsg); |
314 |
|
} |
315 |
< |
#ifdef MSDOS |
294 |
< |
setmode(fileno(stdout), O_BINARY); |
295 |
< |
#endif |
315 |
> |
SET_FILE_BINARY(stdout); |
316 |
|
dupheader(); |
317 |
|
} |
318 |
|
hres = hresolu; vres = vresolu; pa = pixaspect; |
319 |
< |
if (prvr != NULL) |
320 |
< |
if (viewfile(prvr, &ourview, &rs) <= 0 |
301 |
< |
|| rs.rt != PIXSTANDARD) { |
319 |
> |
if (prvr != NULL) { |
320 |
> |
if (viewfile(prvr, &ourview, &rs) <= 0) { |
321 |
|
sprintf(errmsg, |
322 |
|
"cannot recover view parameters from \"%s\"", prvr); |
323 |
|
error(WARNING, errmsg); |
326 |
|
hres = scanlen(&rs); |
327 |
|
vres = numscans(&rs); |
328 |
|
} |
329 |
+ |
} |
330 |
|
if ((cp = setview(&ourview)) != NULL) |
331 |
|
error(USER, cp); |
332 |
|
normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
344 |
|
putchar('\n'); |
345 |
|
if (pa < .99 || pa > 1.01) |
346 |
|
fputaspect(pa, stdout); |
347 |
+ |
fputnow(stdout); |
348 |
|
fputformat(COLRFMT, stdout); |
349 |
|
putchar('\n'); |
350 |
|
if (zout != NULL) |
361 |
|
} |
362 |
|
|
363 |
|
|
364 |
< |
nextview(fp) /* get next view from fp */ |
365 |
< |
FILE *fp; |
364 |
> |
static int |
365 |
> |
nextview( /* get next view from fp */ |
366 |
> |
FILE *fp |
367 |
> |
) |
368 |
|
{ |
369 |
|
char linebuf[256]; |
370 |
|
|
371 |
< |
copystruct(&lastview, &ourview); |
371 |
> |
lastview = ourview; |
372 |
|
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
373 |
|
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
374 |
|
return(0); |
376 |
|
} |
377 |
|
|
378 |
|
|
379 |
< |
render(zfile, oldfile) /* render the scene */ |
380 |
< |
char *zfile, *oldfile; |
379 |
> |
static void |
380 |
> |
render( /* render the scene */ |
381 |
> |
char *zfile, |
382 |
> |
char *oldfile |
383 |
> |
) |
384 |
|
{ |
385 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
386 |
|
float *zbar[MAXDIV+1]; /* z values */ |
420 |
|
sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
421 |
|
error(SYSTEM, errmsg); |
422 |
|
} |
423 |
< |
#ifdef MSDOS |
398 |
< |
setmode(zfd, O_BINARY); |
399 |
< |
#endif |
423 |
> |
SET_FD_BINARY(zfd); |
424 |
|
for (i = 0; i <= psample; i++) { |
425 |
|
zbar[i] = (float *)malloc(hres*sizeof(float)); |
426 |
|
if (zbar[i] == NULL) |
438 |
|
if (i >= vres) |
439 |
|
goto alldone; |
440 |
|
if (zfd != -1 && i > 0 && |
441 |
< |
lseek(zfd, (off_t)i*hres*sizeof(float), 0) < 0) |
441 |
> |
lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
442 |
|
error(SYSTEM, "z-file seek error in render"); |
443 |
|
pctdone = 100.0*i/vres; |
444 |
|
if (ralrm > 0) /* report init stats */ |
445 |
< |
report(); |
446 |
< |
#ifndef BSD |
445 |
> |
report(0); |
446 |
> |
#ifdef SIGCONT |
447 |
|
else |
424 |
– |
#endif |
448 |
|
signal(SIGCONT, report); |
449 |
+ |
#endif |
450 |
|
ypos = vres-1 - i; /* initialize sampling */ |
451 |
|
if (directvis) |
452 |
|
init_drawsources(psample); |
472 |
|
if (directvis) /* add bitty sources */ |
473 |
|
drawsources(scanbar, zbar, 0, hres, ypos, ystep); |
474 |
|
/* write it out */ |
475 |
< |
#ifndef BSD |
475 |
> |
#ifdef SIGCONT |
476 |
|
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
477 |
|
#endif |
478 |
|
for (i = ystep; i > 0; i--) { |
488 |
|
/* record progress */ |
489 |
|
pctdone = 100.0*(vres-1-ypos)/vres; |
490 |
|
if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
491 |
< |
report(); |
492 |
< |
#ifndef BSD |
491 |
> |
report(0); |
492 |
> |
#ifdef SIGCONT |
493 |
|
else |
494 |
|
signal(SIGCONT, report); |
495 |
|
#endif |
496 |
|
} |
497 |
|
/* clean up */ |
498 |
+ |
#ifdef SIGCONT |
499 |
|
signal(SIGCONT, SIG_IGN); |
500 |
+ |
#endif |
501 |
|
if (zfd != -1 && write(zfd, (char *)zbar[0], hres*sizeof(float)) |
502 |
|
< hres*sizeof(float)) |
503 |
|
goto writerr; |
517 |
|
free(sampdens); |
518 |
|
pctdone = 100.0; |
519 |
|
if (ralrm > 0) |
520 |
< |
report(); |
520 |
> |
report(0); |
521 |
> |
#ifdef SIGCONT |
522 |
|
signal(SIGCONT, SIG_DFL); |
523 |
+ |
#endif |
524 |
|
return; |
525 |
|
writerr: |
526 |
|
error(SYSTEM, "write error in render"); |
529 |
|
} |
530 |
|
|
531 |
|
|
532 |
< |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
533 |
< |
register COLOR *scanline; |
534 |
< |
register float *zline; |
535 |
< |
register char *sd; |
536 |
< |
int xres, y, xstep; |
532 |
> |
static void |
533 |
> |
fillscanline( /* fill scan at y */ |
534 |
> |
register COLOR *scanline, |
535 |
> |
register float *zline, |
536 |
> |
register char *sd, |
537 |
> |
int xres, |
538 |
> |
int y, |
539 |
> |
int xstep |
540 |
> |
) |
541 |
|
{ |
542 |
|
static int nc = 0; /* number of calls */ |
543 |
|
int bl = xstep, b = xstep; |
568 |
|
} |
569 |
|
|
570 |
|
|
571 |
< |
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
572 |
< |
register COLOR *scanbar[]; |
573 |
< |
register float *zbar[]; |
574 |
< |
int xres, y, ysize; |
571 |
> |
static void |
572 |
> |
fillscanbar( /* fill interior */ |
573 |
> |
register COLOR *scanbar[], |
574 |
> |
register float *zbar[], |
575 |
> |
int xres, |
576 |
> |
int y, |
577 |
> |
int ysize |
578 |
> |
) |
579 |
|
{ |
580 |
|
COLOR vline[MAXDIV+1]; |
581 |
|
float zline[MAXDIV+1]; |
601 |
|
} |
602 |
|
|
603 |
|
|
604 |
< |
int |
605 |
< |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
606 |
< |
register COLOR *colline; |
607 |
< |
register float *zline; |
608 |
< |
int x, y; |
609 |
< |
int xlen, ylen; |
610 |
< |
int b; |
604 |
> |
static int |
605 |
> |
fillsample( /* fill interior points */ |
606 |
> |
register COLOR *colline, |
607 |
> |
register float *zline, |
608 |
> |
int x, |
609 |
> |
int y, |
610 |
> |
int xlen, |
611 |
> |
int ylen, |
612 |
> |
int b |
613 |
> |
) |
614 |
|
{ |
615 |
|
double ratio; |
616 |
|
double z; |
657 |
|
} |
658 |
|
|
659 |
|
|
660 |
< |
double |
661 |
< |
pixvalue(col, x, y) /* compute pixel value */ |
662 |
< |
COLOR col; /* returned color */ |
663 |
< |
int x, y; /* pixel position */ |
660 |
> |
static double |
661 |
> |
pixvalue( /* compute pixel value */ |
662 |
> |
COLOR col, /* returned color */ |
663 |
> |
int x, /* pixel position */ |
664 |
> |
int y |
665 |
> |
) |
666 |
|
{ |
667 |
|
RAY thisray; |
668 |
|
FVECT lorg, ldir; |
669 |
< |
double hpos, vpos, lmax, d; |
669 |
> |
double hpos, vpos, vdist, lmax; |
670 |
> |
register int i; |
671 |
|
/* compute view ray */ |
672 |
|
hpos = (x+pixjitter())/hres; |
673 |
|
vpos = (y+pixjitter())/vres; |
676 |
|
setcolor(col, 0.0, 0.0, 0.0); |
677 |
|
return(0.0); |
678 |
|
} |
679 |
+ |
vdist = ourview.vdist; |
680 |
|
|
681 |
< |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
681 |
> |
if (rand_samp) /* set pixel index */ |
682 |
> |
samplendx = random(); |
683 |
> |
else |
684 |
> |
samplendx = pixnumber(x,y,hres,vres); |
685 |
|
|
686 |
|
/* optional motion blur */ |
687 |
|
if (lastview.type && mblur > FTINY && (lmax = viewray(lorg, ldir, |
688 |
|
&lastview, hpos, vpos)) >= -FTINY) { |
643 |
– |
register int i; |
689 |
|
register double d = mblur*(.5-urand(281+samplendx)); |
690 |
|
|
691 |
|
thisray.rmax = (1.-d)*thisray.rmax + d*lmax; |
695 |
|
} |
696 |
|
if (normalize(thisray.rdir) == 0.0) |
697 |
|
return(0.0); |
698 |
+ |
vdist = (1.-d)*vdist + d*lastview.vdist; |
699 |
|
} |
700 |
+ |
/* optional depth-of-field */ |
701 |
+ |
if (dblur > FTINY && vdist > FTINY) { |
702 |
+ |
double vc, dfh, dfv; |
703 |
+ |
/* PI/4. square/circle conv. */ |
704 |
+ |
dfh = PI/4.*dblur*(.5 - frandom()); |
705 |
+ |
dfv = PI/4.*dblur*(.5 - frandom()); |
706 |
+ |
if (ourview.type == VT_PER || ourview.type == VT_PAR) { |
707 |
+ |
dfh /= sqrt(ourview.hn2); |
708 |
+ |
dfv /= sqrt(ourview.vn2); |
709 |
+ |
for (i = 3; i--; ) { |
710 |
+ |
vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
711 |
+ |
thisray.rorg[i] += dfh*ourview.hvec[i] + |
712 |
+ |
dfv*ourview.vvec[i] ; |
713 |
+ |
thisray.rdir[i] = vc - thisray.rorg[i]; |
714 |
+ |
} |
715 |
+ |
} else { /* non-standard view case */ |
716 |
+ |
double dfd = PI/4.*dblur*(.5 - frandom()); |
717 |
+ |
if (ourview.type != VT_ANG) { |
718 |
+ |
if (ourview.type != VT_CYL) |
719 |
+ |
dfh /= sqrt(ourview.hn2); |
720 |
+ |
dfv /= sqrt(ourview.vn2); |
721 |
+ |
} |
722 |
+ |
for (i = 3; i--; ) { |
723 |
+ |
vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
724 |
+ |
thisray.rorg[i] += dfh*ourview.hvec[i] + |
725 |
+ |
dfv*ourview.vvec[i] + |
726 |
+ |
dfd*ourview.vdir[i] ; |
727 |
+ |
thisray.rdir[i] = vc - thisray.rorg[i]; |
728 |
+ |
} |
729 |
+ |
} |
730 |
+ |
if (normalize(thisray.rdir) == 0.0) |
731 |
+ |
return(0.0); |
732 |
+ |
} |
733 |
|
|
734 |
< |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
734 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
735 |
|
|
736 |
|
rayvalue(&thisray); /* trace ray */ |
737 |
|
|
741 |
|
} |
742 |
|
|
743 |
|
|
744 |
< |
int |
745 |
< |
salvage(oldfile) /* salvage scanlines from killed program */ |
746 |
< |
char *oldfile; |
744 |
> |
static int |
745 |
> |
salvage( /* salvage scanlines from killed program */ |
746 |
> |
char *oldfile |
747 |
> |
) |
748 |
|
{ |
749 |
|
COLR *scanline; |
750 |
|
FILE *fp; |
758 |
|
error(WARNING, errmsg); |
759 |
|
goto gotzip; |
760 |
|
} |
761 |
< |
#ifdef MSDOS |
682 |
< |
setmode(fileno(fp), O_BINARY); |
683 |
< |
#endif |
761 |
> |
SET_FILE_BINARY(fp); |
762 |
|
/* discard header */ |
763 |
|
getheader(fp, NULL, NULL); |
764 |
|
/* get picture size */ |
798 |
|
writerr: |
799 |
|
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
800 |
|
error(SYSTEM, errmsg); |
801 |
+ |
return -1; /* pro forma return */ |
802 |
|
} |
803 |
|
|
804 |
< |
|
805 |
< |
int |
806 |
< |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
807 |
< |
register int x, y; |
808 |
< |
int xres, yres; |
804 |
> |
static int |
805 |
> |
pixnumber( /* compute pixel index (brushed) */ |
806 |
> |
register int x, |
807 |
> |
register int y, |
808 |
> |
int xres, |
809 |
> |
int yres |
810 |
> |
) |
811 |
|
{ |
812 |
|
x -= y; |
813 |
|
while (x < 0) |