45 |
|
extern int hresolu; /* horizontal resolution */ |
46 |
|
extern int vresolu; /* vertical resolution */ |
47 |
|
|
48 |
< |
static int castonly = 0; |
48 |
> |
int castonly = 0; /* only doing ray-casting? */ |
49 |
|
|
50 |
|
#ifndef MAXTSET |
51 |
|
#define MAXTSET 8191 /* maximum number in trace set */ |
54 |
|
|
55 |
|
static RAY thisray; /* for our convenience */ |
56 |
|
|
57 |
+ |
static FILE *inpfp = NULL; /* input stream pointer */ |
58 |
+ |
|
59 |
+ |
static FVECT *inp_queue = NULL; /* ray input queue if flushing */ |
60 |
+ |
static int inp_qpos = 0; /* next ray to return */ |
61 |
+ |
static int inp_qend = 0; /* number of rays in this work group */ |
62 |
+ |
|
63 |
|
typedef void putf_t(RREAL *v, int n); |
64 |
|
static putf_t puta, putd, putf, putrgbe; |
65 |
|
|
68 |
|
oputr, oputR, oputx, oputX, oputn, oputN, oputs, |
69 |
|
oputw, oputW, oputm, oputM, oputtilde; |
70 |
|
|
65 |
– |
static void setoutput(char *vs); |
71 |
|
extern void tranotify(OBJECT obj); |
72 |
+ |
static int is_fifo(FILE *fp); |
73 |
|
static void bogusray(void); |
74 |
|
static void raycast(RAY *r); |
75 |
|
static void rayirrad(RAY *r); |
76 |
|
static void rtcompute(FVECT org, FVECT dir, double dmax); |
77 |
|
static int printvals(RAY *r); |
78 |
|
static int getvec(FVECT vec, int fmt, FILE *fp); |
79 |
+ |
static int iszerovec(const FVECT vec); |
80 |
+ |
static double nextray(FVECT org, FVECT dir); |
81 |
|
static void tabin(RAY *r); |
82 |
|
static void ourtrace(RAY *r); |
83 |
|
|
92 |
|
{ |
93 |
|
if (ray_pnprocs > 0) /* close children if any */ |
94 |
|
ray_pclose(0); |
95 |
+ |
else if (ray_pnprocs < 0) |
96 |
+ |
_exit(code); /* avoid flush() in child */ |
97 |
|
#ifndef NON_POSIX |
98 |
< |
else if (!ray_pnprocs) { |
98 |
> |
else { |
99 |
|
headclean(); /* delete header file */ |
100 |
|
pfclean(); /* clean up persist files */ |
101 |
|
} |
119 |
|
} |
120 |
|
|
121 |
|
|
122 |
< |
extern void |
122 |
> |
void |
123 |
|
rtrace( /* trace rays from file */ |
124 |
|
char *fname, |
125 |
|
int nproc |
127 |
|
{ |
128 |
|
unsigned long vcount = (hresolu > 1) ? (unsigned long)hresolu*vresolu |
129 |
|
: (unsigned long)vresolu; |
130 |
< |
long nextflush = (vresolu > 0) & (hresolu > 1) ? 0 : hresolu; |
130 |
> |
long nextflush = (!vresolu | (hresolu <= 1)) * hresolu; |
131 |
|
int something2flush = 0; |
132 |
|
FILE *fp; |
133 |
|
double d; |
134 |
|
FVECT orig, direc; |
135 |
|
/* set up input */ |
136 |
|
if (fname == NULL) |
137 |
< |
fp = stdin; |
138 |
< |
else if ((fp = fopen(fname, "r")) == NULL) { |
137 |
> |
inpfp = stdin; |
138 |
> |
else if ((inpfp = fopen(fname, "r")) == NULL) { |
139 |
|
sprintf(errmsg, "cannot open input file \"%s\"", fname); |
140 |
|
error(SYSTEM, errmsg); |
141 |
|
} |
142 |
+ |
#ifdef getc_unlocked |
143 |
+ |
flockfile(inpfp); /* avoid lock/unlock overhead */ |
144 |
+ |
flockfile(stdout); |
145 |
+ |
#endif |
146 |
|
if (inform != 'a') |
147 |
< |
SET_FILE_BINARY(fp); |
147 |
> |
SET_FILE_BINARY(inpfp); |
148 |
|
/* set up output */ |
149 |
< |
setoutput(outvals); |
136 |
< |
if (imm_irrad) |
137 |
< |
castonly = 0; |
138 |
< |
else if (castonly) |
149 |
> |
if (castonly || every_out[0] != NULL) |
150 |
|
nproc = 1; /* don't bother multiprocessing */ |
151 |
|
if ((nextflush > 0) & (nproc > nextflush)) { |
152 |
|
error(WARNING, "reducing number of processes to match flush interval"); |
157 |
|
case 'f': putreal = putf; break; |
158 |
|
case 'd': putreal = putd; break; |
159 |
|
case 'c': |
160 |
< |
if (outvals[0] && (outvals[1] || !strchr("vVWrx", outvals[0]))) |
161 |
< |
error(USER, "color format only with one of 'vVWrx'"); |
160 |
> |
if (outvals[1] || !strchr("vrx", outvals[0])) |
161 |
> |
error(USER, "color format only with -ov, -or, -ox"); |
162 |
|
putreal = putrgbe; break; |
163 |
|
default: |
164 |
|
error(CONSISTENCY, "botched output format"); |
173 |
|
else |
174 |
|
fflush(stdout); |
175 |
|
} |
176 |
< |
/* process file */ |
177 |
< |
while (getvec(orig, inform, fp) == 0 && |
178 |
< |
getvec(direc, inform, fp) == 0) { |
179 |
< |
|
169 |
< |
d = normalize(direc); |
170 |
< |
if (d == 0.0) { /* zero ==> flush */ |
171 |
< |
if ((--nextflush <= 0) | !vcount && something2flush) { |
176 |
> |
/* process input rays */ |
177 |
> |
while ((d = nextray(orig, direc)) >= 0.0) { |
178 |
> |
if (d == 0.0) { /* flush request? */ |
179 |
> |
if (something2flush) { |
180 |
|
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
181 |
|
error(USER, "child(ren) died"); |
182 |
|
bogusray(); |
183 |
|
fflush(stdout); |
184 |
+ |
nextflush = (!vresolu | (hresolu <= 1)) * hresolu; |
185 |
|
something2flush = 0; |
177 |
– |
nextflush = (vresolu > 0) & (hresolu > 1) ? 0 : |
178 |
– |
hresolu; |
186 |
|
} else |
187 |
|
bogusray(); |
188 |
|
} else { /* compute and print */ |
189 |
|
rtcompute(orig, direc, lim_dist ? d : 0.0); |
190 |
< |
/* flush if time */ |
184 |
< |
if (!--nextflush) { |
190 |
> |
if (!--nextflush) { /* flush if time */ |
191 |
|
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
192 |
|
error(USER, "child(ren) died"); |
193 |
|
fflush(stdout); |
205 |
|
error(USER, "unable to complete processing"); |
206 |
|
ray_pclose(0); |
207 |
|
} |
208 |
+ |
if (vcount) |
209 |
+ |
error(WARNING, "unexpected EOF on input"); |
210 |
|
if (fflush(stdout) < 0) |
211 |
|
error(SYSTEM, "write error"); |
212 |
< |
if (vcount) |
213 |
< |
error(USER, "unexpected EOF on input"); |
214 |
< |
if (fname != NULL) |
215 |
< |
fclose(fp); |
212 |
> |
if (fname != NULL) { |
213 |
> |
fclose(inpfp); |
214 |
> |
inpfp = NULL; |
215 |
> |
} |
216 |
> |
nextray(NULL, NULL); |
217 |
|
} |
218 |
|
|
219 |
|
|
227 |
|
} |
228 |
|
|
229 |
|
|
230 |
< |
static void |
231 |
< |
setoutput( /* set up output tables */ |
223 |
< |
char *vs |
224 |
< |
) |
230 |
> |
int |
231 |
> |
setrtoutput(void) /* set up output tables, return #comp */ |
232 |
|
{ |
233 |
+ |
char *vs = outvals; |
234 |
|
oputf_t **table = ray_out; |
235 |
+ |
int ncomp = 0; |
236 |
|
|
237 |
< |
castonly = 1; |
238 |
< |
while (*vs) |
239 |
< |
switch (*vs++) { |
237 |
> |
if (!*vs) |
238 |
> |
error(USER, "empty output specification"); |
239 |
> |
|
240 |
> |
castonly = 1; /* sets castonly as side-effect */ |
241 |
> |
do |
242 |
> |
switch (*vs) { |
243 |
|
case 'T': /* trace sources */ |
244 |
< |
if (!*vs) break; |
244 |
> |
if (!vs[1]) break; |
245 |
|
trace_sources(); |
246 |
|
/* fall through */ |
247 |
|
case 't': /* trace */ |
248 |
< |
if (!*vs) break; |
248 |
> |
if (!vs[1]) break; |
249 |
|
*table = NULL; |
250 |
|
table = every_out; |
251 |
|
trace = ourtrace; |
253 |
|
break; |
254 |
|
case 'o': /* origin */ |
255 |
|
*table++ = oputo; |
256 |
+ |
ncomp += 3; |
257 |
|
break; |
258 |
|
case 'd': /* direction */ |
259 |
|
*table++ = oputd; |
260 |
+ |
ncomp += 3; |
261 |
|
break; |
262 |
|
case 'r': /* reflected contrib. */ |
263 |
|
*table++ = oputr; |
264 |
+ |
ncomp += 3; |
265 |
|
castonly = 0; |
266 |
|
break; |
267 |
|
case 'R': /* reflected distance */ |
268 |
|
*table++ = oputR; |
269 |
+ |
ncomp++; |
270 |
|
castonly = 0; |
271 |
|
break; |
272 |
|
case 'x': /* xmit contrib. */ |
273 |
|
*table++ = oputx; |
274 |
+ |
ncomp += 3; |
275 |
|
castonly = 0; |
276 |
|
break; |
277 |
|
case 'X': /* xmit distance */ |
278 |
|
*table++ = oputX; |
279 |
+ |
ncomp++; |
280 |
|
castonly = 0; |
281 |
|
break; |
282 |
|
case 'v': /* value */ |
283 |
|
*table++ = oputv; |
284 |
+ |
ncomp += 3; |
285 |
|
castonly = 0; |
286 |
|
break; |
287 |
|
case 'V': /* contribution */ |
288 |
|
*table++ = oputV; |
289 |
+ |
ncomp += 3; |
290 |
|
castonly = 0; |
291 |
|
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
292 |
|
error(WARNING, |
294 |
|
break; |
295 |
|
case 'l': /* effective distance */ |
296 |
|
*table++ = oputl; |
297 |
+ |
ncomp++; |
298 |
|
castonly = 0; |
299 |
|
break; |
300 |
|
case 'c': /* local coordinates */ |
301 |
|
*table++ = oputc; |
302 |
+ |
ncomp += 2; |
303 |
|
break; |
304 |
|
case 'L': /* single ray length */ |
305 |
|
*table++ = oputL; |
306 |
+ |
ncomp++; |
307 |
|
break; |
308 |
|
case 'p': /* point */ |
309 |
|
*table++ = oputp; |
310 |
+ |
ncomp += 3; |
311 |
|
break; |
312 |
|
case 'n': /* perturbed normal */ |
313 |
|
*table++ = oputn; |
314 |
+ |
ncomp += 3; |
315 |
|
castonly = 0; |
316 |
|
break; |
317 |
|
case 'N': /* unperturbed normal */ |
318 |
|
*table++ = oputN; |
319 |
+ |
ncomp += 3; |
320 |
|
break; |
321 |
|
case 's': /* surface */ |
322 |
|
*table++ = oputs; |
323 |
+ |
ncomp++; |
324 |
|
break; |
325 |
|
case 'w': /* weight */ |
326 |
|
*table++ = oputw; |
327 |
+ |
ncomp++; |
328 |
|
break; |
329 |
|
case 'W': /* coefficient */ |
330 |
|
*table++ = oputW; |
331 |
+ |
ncomp += 3; |
332 |
|
castonly = 0; |
333 |
|
if (ambounce > 0 && (ambacc > FTINY) | (ambssamp > 0)) |
334 |
|
error(WARNING, |
336 |
|
break; |
337 |
|
case 'm': /* modifier */ |
338 |
|
*table++ = oputm; |
339 |
+ |
ncomp++; |
340 |
|
break; |
341 |
|
case 'M': /* material */ |
342 |
|
*table++ = oputM; |
343 |
+ |
ncomp++; |
344 |
|
break; |
345 |
|
case '~': /* tilde */ |
346 |
|
*table++ = oputtilde; |
347 |
|
break; |
348 |
+ |
default: |
349 |
+ |
sprintf(errmsg, "unrecognized output option '%c'", *vs); |
350 |
+ |
error(USER, errmsg); |
351 |
|
} |
352 |
+ |
while (*++vs); |
353 |
+ |
|
354 |
|
*table = NULL; |
355 |
< |
if (do_irrad | imm_irrad) /* compatibile? */ |
356 |
< |
for (table = ray_out; *table != NULL; table++) |
357 |
< |
if ((*table == oputr) | (*table == oputR) | |
358 |
< |
(*table == oputx) | (*table == oputX)) { |
359 |
< |
error(WARNING, "-orRxX options incompatible with -I+ and -i+"); |
360 |
< |
break; |
361 |
< |
} |
355 |
> |
if (*every_out != NULL) |
356 |
> |
ncomp = 0; |
357 |
> |
/* compatibility */ |
358 |
> |
if ((do_irrad | imm_irrad) && castonly) |
359 |
> |
error(USER, "-I+ and -i+ options require some value output"); |
360 |
> |
for (table = ray_out; *table != NULL; table++) { |
361 |
> |
if ((*table == oputV) | (*table == oputW)) |
362 |
> |
error(WARNING, "-oVW options require trace mode"); |
363 |
> |
if ((do_irrad | imm_irrad) && |
364 |
> |
(*table == oputr) | (*table == oputR) | |
365 |
> |
(*table == oputx) | (*table == oputX)) |
366 |
> |
error(WARNING, "-orRxX options incompatible with -I+ and -i+"); |
367 |
> |
} |
368 |
> |
return(ncomp); |
369 |
|
} |
370 |
|
|
371 |
|
|
464 |
|
|
465 |
|
|
466 |
|
static int |
467 |
< |
getvec( /* get a vector from fp */ |
467 |
> |
is_fifo( /* check if file pointer connected to pipe */ |
468 |
> |
FILE *fp |
469 |
> |
) |
470 |
> |
{ |
471 |
> |
#ifdef S_ISFIFO |
472 |
> |
struct stat sbuf; |
473 |
> |
|
474 |
> |
if (fstat(fileno(fp), &sbuf) < 0) |
475 |
> |
error(SYSTEM, "fstat() failed on input stream"); |
476 |
> |
return(S_ISFIFO(sbuf.st_mode)); |
477 |
> |
#else |
478 |
> |
return (fp == stdin); /* just a guess, really */ |
479 |
> |
#endif |
480 |
> |
} |
481 |
> |
|
482 |
> |
|
483 |
> |
static int |
484 |
> |
getvec( /* get a vector from fp */ |
485 |
|
FVECT vec, |
486 |
|
int fmt, |
487 |
|
FILE *fp |
518 |
|
} |
519 |
|
|
520 |
|
|
521 |
+ |
static int |
522 |
+ |
iszerovec(const FVECT vec) |
523 |
+ |
{ |
524 |
+ |
return (vec[0] == 0.0) & (vec[1] == 0.0) & (vec[2] == 0.0); |
525 |
+ |
} |
526 |
+ |
|
527 |
+ |
|
528 |
+ |
static double |
529 |
+ |
nextray( /* return next ray in work group (-1.0 if EOF) */ |
530 |
+ |
FVECT org, |
531 |
+ |
FVECT dir |
532 |
+ |
) |
533 |
+ |
{ |
534 |
+ |
const size_t qlength = !vresolu * hresolu; |
535 |
+ |
|
536 |
+ |
if ((org == NULL) | (dir == NULL)) { |
537 |
+ |
if (inp_queue != NULL) /* asking to free queue */ |
538 |
+ |
free(inp_queue); |
539 |
+ |
inp_queue = NULL; |
540 |
+ |
inp_qpos = inp_qend = 0; |
541 |
+ |
return(-1.); |
542 |
+ |
} |
543 |
+ |
if (!inp_qend) { /* initialize FIFO queue */ |
544 |
+ |
int rsiz = 6*20; /* conservative ascii ray size */ |
545 |
+ |
if (inform == 'f') rsiz = 6*sizeof(float); |
546 |
+ |
else if (inform == 'd') rsiz = 6*sizeof(double); |
547 |
+ |
/* check against pipe limit */ |
548 |
+ |
if (qlength*rsiz > 512 && is_fifo(inpfp)) |
549 |
+ |
inp_queue = (FVECT *)malloc(sizeof(FVECT)*2*qlength); |
550 |
+ |
inp_qend = -(inp_queue == NULL); /* flag for no queue */ |
551 |
+ |
} |
552 |
+ |
if (inp_qend < 0) { /* not queuing? */ |
553 |
+ |
if (getvec(org, inform, inpfp) < 0 || |
554 |
+ |
getvec(dir, inform, inpfp) < 0) |
555 |
+ |
return(-1.); |
556 |
+ |
return normalize(dir); |
557 |
+ |
} |
558 |
+ |
if (inp_qpos >= inp_qend) { /* need to refill input queue? */ |
559 |
+ |
for (inp_qend = 0; inp_qend < qlength; inp_qend++) { |
560 |
+ |
if (getvec(inp_queue[2*inp_qend], inform, inpfp) < 0 |
561 |
+ |
|| getvec(inp_queue[2*inp_qend+1], |
562 |
+ |
inform, inpfp) < 0) |
563 |
+ |
break; /* hit EOF */ |
564 |
+ |
if (iszerovec(inp_queue[2*inp_qend+1])) { |
565 |
+ |
++inp_qend; /* flush request */ |
566 |
+ |
break; |
567 |
+ |
} |
568 |
+ |
} |
569 |
+ |
inp_qpos = 0; |
570 |
+ |
} |
571 |
+ |
if (inp_qpos >= inp_qend) /* unexpected EOF? */ |
572 |
+ |
return(-1.); |
573 |
+ |
VCOPY(org, inp_queue[2*inp_qpos]); |
574 |
+ |
VCOPY(dir, inp_queue[2*inp_qpos+1]); |
575 |
+ |
++inp_qpos; |
576 |
+ |
return normalize(dir); |
577 |
+ |
} |
578 |
+ |
|
579 |
+ |
|
580 |
|
void |
581 |
|
tranotify( /* record new modifier */ |
582 |
|
OBJECT obj |
769 |
|
RAY *r |
770 |
|
) |
771 |
|
{ |
772 |
< |
if (r->rot < FHUGE) |
772 |
> |
if (r->rot < FHUGE*.99) |
773 |
|
(*putreal)(r->rop, 3); |
774 |
|
else |
775 |
|
(*putreal)(vdummy, 3); |
781 |
|
RAY *r |
782 |
|
) |
783 |
|
{ |
784 |
< |
if (r->rot < FHUGE) |
785 |
< |
(*putreal)(r->ron, 3); |
786 |
< |
else |
784 |
> |
if (r->rot < FHUGE*.99) { |
785 |
> |
if (r->rflips & 1) { /* undo any flippin' flips */ |
786 |
> |
FVECT unrm; |
787 |
> |
unrm[0] = -r->ron[0]; |
788 |
> |
unrm[1] = -r->ron[1]; |
789 |
> |
unrm[2] = -r->ron[2]; |
790 |
> |
(*putreal)(unrm, 3); |
791 |
> |
} else |
792 |
> |
(*putreal)(r->ron, 3); |
793 |
> |
} else |
794 |
|
(*putreal)(vdummy, 3); |
795 |
|
} |
796 |
|
|
802 |
|
{ |
803 |
|
FVECT pnorm; |
804 |
|
|
805 |
< |
if (r->rot >= FHUGE) { |
805 |
> |
if (r->rot >= FHUGE*.99) { |
806 |
|
(*putreal)(vdummy, 3); |
807 |
|
return; |
808 |
|
} |