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 */ |
52 |
|
#endif |
53 |
|
OBJECT traset[MAXTSET+1]={0}; /* trace include/exclude set */ |
54 |
|
|
55 |
+ |
static int Tflag = 0; /* source tracing enabled? */ |
56 |
+ |
|
57 |
|
static RAY thisray; /* for our convenience */ |
58 |
|
|
59 |
|
static FILE *inpfp = NULL; /* input stream pointer */ |
70 |
|
oputr, oputR, oputx, oputX, oputn, oputN, oputs, |
71 |
|
oputw, oputW, oputm, oputM, oputtilde; |
72 |
|
|
71 |
– |
static void setoutput(char *vs); |
73 |
|
extern void tranotify(OBJECT obj); |
74 |
+ |
static int is_fifo(FILE *fp); |
75 |
|
static void bogusray(void); |
76 |
|
static void raycast(RAY *r); |
77 |
|
static void rayirrad(RAY *r); |
94 |
|
{ |
95 |
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if (ray_pnprocs > 0) /* close children if any */ |
96 |
|
ray_pclose(0); |
97 |
+ |
else if (ray_pnprocs < 0) |
98 |
+ |
_exit(code); /* avoid flush() in child */ |
99 |
|
#ifndef NON_POSIX |
100 |
< |
else if (!ray_pnprocs) { |
100 |
> |
else { |
101 |
|
headclean(); /* delete header file */ |
102 |
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pfclean(); /* clean up persist files */ |
103 |
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} |
121 |
|
} |
122 |
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|
123 |
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|
124 |
< |
extern void |
124 |
> |
static void |
125 |
> |
trace_sources(void) /* trace rays to light sources, also */ |
126 |
> |
{ |
127 |
> |
int sn; |
128 |
> |
|
129 |
> |
for (sn = 0; sn < nsources; sn++) |
130 |
> |
source[sn].sflags |= SFOLLOW; |
131 |
> |
} |
132 |
> |
|
133 |
> |
|
134 |
> |
void |
135 |
|
rtrace( /* trace rays from file */ |
136 |
|
char *fname, |
137 |
|
int nproc |
158 |
|
if (inform != 'a') |
159 |
|
SET_FILE_BINARY(inpfp); |
160 |
|
/* set up output */ |
161 |
< |
if (imm_irrad) |
148 |
< |
castonly = 0; |
149 |
< |
else if (castonly || every_out[0] != NULL) |
161 |
> |
if (castonly || every_out[0] != NULL) |
162 |
|
nproc = 1; /* don't bother multiprocessing */ |
163 |
+ |
if (Tflag && every_out[0] != NULL) |
164 |
+ |
trace_sources(); /* asking to trace light sources */ |
165 |
|
if ((nextflush > 0) & (nproc > nextflush)) { |
166 |
|
error(WARNING, "reducing number of processes to match flush interval"); |
167 |
|
nproc = nextflush; |
168 |
|
} |
155 |
– |
switch (outform) { |
156 |
– |
case 'a': putreal = puta; break; |
157 |
– |
case 'f': putreal = putf; break; |
158 |
– |
case 'd': putreal = putd; break; |
159 |
– |
case 'c': |
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"); |
165 |
– |
} |
169 |
|
if (nproc > 1) { /* start multiprocessing */ |
170 |
|
ray_popen(nproc); |
171 |
|
ray_fifo_out = printvals; |
220 |
|
} |
221 |
|
|
222 |
|
|
220 |
– |
static void |
221 |
– |
trace_sources(void) /* trace rays to light sources, also */ |
222 |
– |
{ |
223 |
– |
int sn; |
224 |
– |
|
225 |
– |
for (sn = 0; sn < nsources; sn++) |
226 |
– |
source[sn].sflags |= SFOLLOW; |
227 |
– |
} |
228 |
– |
|
229 |
– |
|
223 |
|
int |
224 |
|
setrtoutput(void) /* set up output tables, return #comp */ |
225 |
|
{ |
230 |
|
if (!*vs) |
231 |
|
error(USER, "empty output specification"); |
232 |
|
|
233 |
< |
castonly = 1; |
233 |
> |
switch (outform) { /* make sure (*putreal)() calls someone! */ |
234 |
> |
case 'a': putreal = puta; break; |
235 |
> |
case 'f': putreal = putf; break; |
236 |
> |
case 'd': putreal = putd; break; |
237 |
> |
case 'c': |
238 |
> |
if (outvals[1] || !strchr("vrx", outvals[0])) |
239 |
> |
error(USER, "color format only with -ov, -or, -ox"); |
240 |
> |
putreal = putrgbe; break; |
241 |
> |
default: |
242 |
> |
error(CONSISTENCY, "botched output format"); |
243 |
> |
} |
244 |
> |
castonly = 1; /* sets castonly as side-effect */ |
245 |
|
do |
246 |
|
switch (*vs) { |
247 |
|
case 'T': /* trace sources */ |
248 |
< |
if (!vs[1]) break; |
245 |
< |
trace_sources(); |
248 |
> |
Tflag++; |
249 |
|
/* fall through */ |
250 |
|
case 't': /* trace */ |
251 |
|
if (!vs[1]) break; |
290 |
|
case 'V': /* contribution */ |
291 |
|
*table++ = oputV; |
292 |
|
ncomp += 3; |
293 |
+ |
castonly = 0; |
294 |
|
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
295 |
|
error(WARNING, |
296 |
|
"-otV accuracy depends on -aa 0 -as 0"); |
358 |
|
if (*every_out != NULL) |
359 |
|
ncomp = 0; |
360 |
|
/* compatibility */ |
361 |
+ |
if ((do_irrad | imm_irrad) && castonly) |
362 |
+ |
error(USER, "-I+ and -i+ options require some value output"); |
363 |
|
for (table = ray_out; *table != NULL; table++) { |
364 |
|
if ((*table == oputV) | (*table == oputW)) |
365 |
|
error(WARNING, "-oVW options require trace mode"); |
423 |
|
) |
424 |
|
{ |
425 |
|
/* set up ray */ |
420 |
– |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
426 |
|
if (imm_irrad) { |
427 |
|
VSUM(thisray.rorg, org, dir, 1.1e-4); |
428 |
|
thisray.rdir[0] = -dir[0]; |
429 |
|
thisray.rdir[1] = -dir[1]; |
430 |
|
thisray.rdir[2] = -dir[2]; |
431 |
|
thisray.rmax = 0.0; |
427 |
– |
thisray.revf = rayirrad; |
432 |
|
} else { |
433 |
|
VCOPY(thisray.rorg, org); |
434 |
|
VCOPY(thisray.rdir, dir); |
435 |
|
thisray.rmax = dmax; |
432 |
– |
if (castonly) |
433 |
– |
thisray.revf = raycast; |
436 |
|
} |
437 |
+ |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
438 |
+ |
if (imm_irrad) |
439 |
+ |
thisray.revf = rayirrad; |
440 |
+ |
else if (castonly) |
441 |
+ |
thisray.revf = raycast; |
442 |
|
if (ray_pnprocs > 1) { /* multiprocessing FIFO? */ |
443 |
|
if (ray_fifo_in(&thisray) < 0) |
444 |
|
error(USER, "lost children"); |
468 |
|
|
469 |
|
|
470 |
|
static int |
471 |
+ |
is_fifo( /* check if file pointer connected to pipe */ |
472 |
+ |
FILE *fp |
473 |
+ |
) |
474 |
+ |
{ |
475 |
+ |
#ifdef S_ISFIFO |
476 |
+ |
struct stat sbuf; |
477 |
+ |
|
478 |
+ |
if (fstat(fileno(fp), &sbuf) < 0) |
479 |
+ |
error(SYSTEM, "fstat() failed on input stream"); |
480 |
+ |
return(S_ISFIFO(sbuf.st_mode)); |
481 |
+ |
#else |
482 |
+ |
return (fp == stdin); /* just a guess, really */ |
483 |
+ |
#endif |
484 |
+ |
} |
485 |
+ |
|
486 |
+ |
|
487 |
+ |
static int |
488 |
|
getvec( /* get a vector from fp */ |
489 |
|
FVECT vec, |
490 |
|
int fmt, |
548 |
|
int rsiz = 6*20; /* conservative ascii ray size */ |
549 |
|
if (inform == 'f') rsiz = 6*sizeof(float); |
550 |
|
else if (inform == 'd') rsiz = 6*sizeof(double); |
551 |
< |
if ((inpfp == stdin) & (qlength*rsiz > 512)) /* pipe limit */ |
551 |
> |
/* check against pipe limit */ |
552 |
> |
if (qlength*rsiz > 512 && is_fifo(inpfp)) |
553 |
|
inp_queue = (FVECT *)malloc(sizeof(FVECT)*2*qlength); |
554 |
|
inp_qend = -(inp_queue == NULL); /* flag for no queue */ |
555 |
|
} |
769 |
|
|
770 |
|
|
771 |
|
static void |
772 |
< |
oputp( /* print point */ |
772 |
> |
oputp( /* print intersection point */ |
773 |
|
RAY *r |
774 |
|
) |
775 |
|
{ |
776 |
< |
if (r->rot < FHUGE*.99) |
752 |
< |
(*putreal)(r->rop, 3); |
753 |
< |
else |
754 |
< |
(*putreal)(vdummy, 3); |
776 |
> |
(*putreal)(r->rop, 3); /* set to ray origin if distant or no hit */ |
777 |
|
} |
778 |
|
|
779 |
|
|
782 |
|
RAY *r |
783 |
|
) |
784 |
|
{ |
785 |
< |
if (r->rot < FHUGE*.99) { |
764 |
< |
if (r->rflips & 1) { /* undo any flippin' flips */ |
765 |
< |
FVECT unrm; |
766 |
< |
unrm[0] = -r->ron[0]; |
767 |
< |
unrm[1] = -r->ron[1]; |
768 |
< |
unrm[2] = -r->ron[2]; |
769 |
< |
(*putreal)(unrm, 3); |
770 |
< |
} else |
771 |
< |
(*putreal)(r->ron, 3); |
772 |
< |
} else |
785 |
> |
if (r->ro == NULL) { /* zero vector if clipped or no hit */ |
786 |
|
(*putreal)(vdummy, 3); |
787 |
+ |
return; |
788 |
+ |
} |
789 |
+ |
if (r->rflips & 1) { /* undo any flippin' flips */ |
790 |
+ |
FVECT unrm; |
791 |
+ |
unrm[0] = -r->ron[0]; |
792 |
+ |
unrm[1] = -r->ron[1]; |
793 |
+ |
unrm[2] = -r->ron[2]; |
794 |
+ |
(*putreal)(unrm, 3); |
795 |
+ |
} else |
796 |
+ |
(*putreal)(r->ron, 3); |
797 |
|
} |
798 |
|
|
799 |
|
|
804 |
|
{ |
805 |
|
FVECT pnorm; |
806 |
|
|
807 |
< |
if (r->rot >= FHUGE*.99) { |
807 |
> |
if (r->ro == NULL) { /* clipped or no hit */ |
808 |
|
(*putreal)(vdummy, 3); |
809 |
|
return; |
810 |
|
} |