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#ifndef lint |
2 |
static const char RCSid[] = "$Id: rtrace.c,v 2.95 2020/05/07 17:13:08 greg Exp $"; |
3 |
#endif |
4 |
/* |
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* rtrace.c - program and variables for individual ray tracing. |
6 |
*/ |
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|
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#include "copyright.h" |
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|
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/* |
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* Input is in the form: |
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* |
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* xorg yorg zorg xdir ydir zdir |
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* |
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* The direction need not be normalized. Output is flexible. |
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* If the direction vector is (0,0,0), then the output is flushed. |
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* All values default to ascii representation of real |
18 |
* numbers. Binary representations can be selected |
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* with '-ff' for float or '-fd' for double. By default, |
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* radiance is computed. The '-i' or '-I' options indicate that |
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* irradiance values are desired. |
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*/ |
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|
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#include <time.h> |
25 |
|
26 |
#include "platform.h" |
27 |
#include "ray.h" |
28 |
#include "ambient.h" |
29 |
#include "source.h" |
30 |
#include "otypes.h" |
31 |
#include "otspecial.h" |
32 |
#include "resolu.h" |
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#include "random.h" |
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|
35 |
extern int inform; /* input format */ |
36 |
extern int outform; /* output format */ |
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extern char *outvals; /* output values */ |
38 |
|
39 |
extern int imm_irrad; /* compute immediate irradiance? */ |
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extern int lim_dist; /* limit distance? */ |
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|
42 |
extern char *tralist[]; /* list of modifers to trace (or no) */ |
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extern int traincl; /* include == 1, exclude == 0 */ |
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|
45 |
extern int hresolu; /* horizontal resolution */ |
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extern int vresolu; /* vertical resolution */ |
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|
48 |
int castonly = 0; /* only doing ray-casting? */ |
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|
50 |
#ifndef MAXTSET |
51 |
#define MAXTSET 8191 /* maximum number in trace set */ |
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#endif |
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OBJECT traset[MAXTSET+1]={0}; /* trace include/exclude set */ |
54 |
|
55 |
static RAY thisray; /* for our convenience */ |
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|
57 |
static FILE *inpfp = NULL; /* input stream pointer */ |
58 |
|
59 |
static FVECT *inp_queue = NULL; /* ray input queue if flushing */ |
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static int inp_qpos = 0; /* next ray to return */ |
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static int inp_qend = 0; /* number of rays in this work group */ |
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|
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typedef void putf_t(RREAL *v, int n); |
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static putf_t puta, putd, putf, putrgbe; |
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|
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typedef void oputf_t(RAY *r); |
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static oputf_t oputo, oputd, oputv, oputV, oputl, oputL, oputc, oputp, |
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oputr, oputR, oputx, oputX, oputn, oputN, oputs, |
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oputw, oputW, oputm, oputM, oputtilde; |
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|
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extern void tranotify(OBJECT obj); |
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static int is_fifo(FILE *fp); |
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static void bogusray(void); |
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static void raycast(RAY *r); |
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static void rayirrad(RAY *r); |
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static void rtcompute(FVECT org, FVECT dir, double dmax); |
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static int printvals(RAY *r); |
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static int getvec(FVECT vec, int fmt, FILE *fp); |
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static int iszerovec(const FVECT vec); |
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static double nextray(FVECT org, FVECT dir); |
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static void tabin(RAY *r); |
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static void ourtrace(RAY *r); |
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|
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static oputf_t *ray_out[32], *every_out[32]; |
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static putf_t *putreal; |
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|
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|
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void |
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quit( /* quit program */ |
90 |
int code |
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) |
92 |
{ |
93 |
if (ray_pnprocs > 0) /* close children if any */ |
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ray_pclose(0); |
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#ifndef NON_POSIX |
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else if (!ray_pnprocs) { |
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headclean(); /* delete header file */ |
98 |
pfclean(); /* clean up persist files */ |
99 |
} |
100 |
#endif |
101 |
exit(code); |
102 |
} |
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|
104 |
|
105 |
char * |
106 |
formstr( /* return format identifier */ |
107 |
int f |
108 |
) |
109 |
{ |
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switch (f) { |
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case 'a': return("ascii"); |
112 |
case 'f': return("float"); |
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case 'd': return("double"); |
114 |
case 'c': return(COLRFMT); |
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} |
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return("unknown"); |
117 |
} |
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|
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|
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void |
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rtrace( /* trace rays from file */ |
122 |
char *fname, |
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int nproc |
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) |
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{ |
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unsigned long vcount = (hresolu > 1) ? (unsigned long)hresolu*vresolu |
127 |
: (unsigned long)vresolu; |
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long nextflush = (!vresolu | (hresolu <= 1)) * hresolu; |
129 |
int something2flush = 0; |
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FILE *fp; |
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double d; |
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FVECT orig, direc; |
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/* set up input */ |
134 |
if (fname == NULL) |
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inpfp = stdin; |
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else if ((inpfp = fopen(fname, "r")) == NULL) { |
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sprintf(errmsg, "cannot open input file \"%s\"", fname); |
138 |
error(SYSTEM, errmsg); |
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} |
140 |
#ifdef getc_unlocked |
141 |
flockfile(inpfp); /* avoid lock/unlock overhead */ |
142 |
flockfile(stdout); |
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#endif |
144 |
if (inform != 'a') |
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SET_FILE_BINARY(inpfp); |
146 |
/* set up output */ |
147 |
if (castonly || every_out[0] != NULL) |
148 |
nproc = 1; /* don't bother multiprocessing */ |
149 |
if ((nextflush > 0) & (nproc > nextflush)) { |
150 |
error(WARNING, "reducing number of processes to match flush interval"); |
151 |
nproc = nextflush; |
152 |
} |
153 |
switch (outform) { |
154 |
case 'a': putreal = puta; break; |
155 |
case 'f': putreal = putf; break; |
156 |
case 'd': putreal = putd; break; |
157 |
case 'c': |
158 |
if (outvals[1] || !strchr("vrx", outvals[0])) |
159 |
error(USER, "color format only with -ov, -or, -ox"); |
160 |
putreal = putrgbe; break; |
161 |
default: |
162 |
error(CONSISTENCY, "botched output format"); |
163 |
} |
164 |
if (nproc > 1) { /* start multiprocessing */ |
165 |
ray_popen(nproc); |
166 |
ray_fifo_out = printvals; |
167 |
ray_pnbatch = 1; /* optimize for throughput */ |
168 |
} |
169 |
if (hresolu > 0) { |
170 |
if (vresolu > 0) |
171 |
fprtresolu(hresolu, vresolu, stdout); |
172 |
else |
173 |
fflush(stdout); |
174 |
} |
175 |
/* process input rays */ |
176 |
while ((d = nextray(orig, direc)) >= 0.0) { |
177 |
if (d == 0.0) { /* flush request? */ |
178 |
if (something2flush) { |
179 |
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
180 |
error(USER, "child(ren) died"); |
181 |
bogusray(); |
182 |
fflush(stdout); |
183 |
nextflush = (!vresolu | (hresolu <= 1)) * hresolu; |
184 |
something2flush = 0; |
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} else |
186 |
bogusray(); |
187 |
} else { /* compute and print */ |
188 |
rtcompute(orig, direc, lim_dist ? d : 0.0); |
189 |
if (!--nextflush) { /* flush if time */ |
190 |
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
191 |
error(USER, "child(ren) died"); |
192 |
fflush(stdout); |
193 |
nextflush = hresolu; |
194 |
} else |
195 |
something2flush = 1; |
196 |
} |
197 |
if (ferror(stdout)) |
198 |
error(SYSTEM, "write error"); |
199 |
if (vcount && !--vcount) /* check for end */ |
200 |
break; |
201 |
} |
202 |
if (ray_pnprocs > 1) { /* clean up children */ |
203 |
if (ray_fifo_flush() < 0) |
204 |
error(USER, "unable to complete processing"); |
205 |
ray_pclose(0); |
206 |
} |
207 |
if (vcount) |
208 |
error(WARNING, "unexpected EOF on input"); |
209 |
if (fflush(stdout) < 0) |
210 |
error(SYSTEM, "write error"); |
211 |
if (fname != NULL) { |
212 |
fclose(inpfp); |
213 |
inpfp = NULL; |
214 |
} |
215 |
nextray(NULL, NULL); |
216 |
} |
217 |
|
218 |
|
219 |
static void |
220 |
trace_sources(void) /* trace rays to light sources, also */ |
221 |
{ |
222 |
int sn; |
223 |
|
224 |
for (sn = 0; sn < nsources; sn++) |
225 |
source[sn].sflags |= SFOLLOW; |
226 |
} |
227 |
|
228 |
|
229 |
int |
230 |
setrtoutput(void) /* set up output tables, return #comp */ |
231 |
{ |
232 |
char *vs = outvals; |
233 |
oputf_t **table = ray_out; |
234 |
int ncomp = 0; |
235 |
|
236 |
if (!*vs) |
237 |
error(USER, "empty output specification"); |
238 |
|
239 |
castonly = 1; /* sets castonly as side-effect */ |
240 |
do |
241 |
switch (*vs) { |
242 |
case 'T': /* trace sources */ |
243 |
if (!vs[1]) break; |
244 |
trace_sources(); |
245 |
/* fall through */ |
246 |
case 't': /* trace */ |
247 |
if (!vs[1]) break; |
248 |
*table = NULL; |
249 |
table = every_out; |
250 |
trace = ourtrace; |
251 |
castonly = 0; |
252 |
break; |
253 |
case 'o': /* origin */ |
254 |
*table++ = oputo; |
255 |
ncomp += 3; |
256 |
break; |
257 |
case 'd': /* direction */ |
258 |
*table++ = oputd; |
259 |
ncomp += 3; |
260 |
break; |
261 |
case 'r': /* reflected contrib. */ |
262 |
*table++ = oputr; |
263 |
ncomp += 3; |
264 |
castonly = 0; |
265 |
break; |
266 |
case 'R': /* reflected distance */ |
267 |
*table++ = oputR; |
268 |
ncomp++; |
269 |
castonly = 0; |
270 |
break; |
271 |
case 'x': /* xmit contrib. */ |
272 |
*table++ = oputx; |
273 |
ncomp += 3; |
274 |
castonly = 0; |
275 |
break; |
276 |
case 'X': /* xmit distance */ |
277 |
*table++ = oputX; |
278 |
ncomp++; |
279 |
castonly = 0; |
280 |
break; |
281 |
case 'v': /* value */ |
282 |
*table++ = oputv; |
283 |
ncomp += 3; |
284 |
castonly = 0; |
285 |
break; |
286 |
case 'V': /* contribution */ |
287 |
*table++ = oputV; |
288 |
ncomp += 3; |
289 |
castonly = 0; |
290 |
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
291 |
error(WARNING, |
292 |
"-otV accuracy depends on -aa 0 -as 0"); |
293 |
break; |
294 |
case 'l': /* effective distance */ |
295 |
*table++ = oputl; |
296 |
ncomp++; |
297 |
castonly = 0; |
298 |
break; |
299 |
case 'c': /* local coordinates */ |
300 |
*table++ = oputc; |
301 |
ncomp += 2; |
302 |
break; |
303 |
case 'L': /* single ray length */ |
304 |
*table++ = oputL; |
305 |
ncomp++; |
306 |
break; |
307 |
case 'p': /* point */ |
308 |
*table++ = oputp; |
309 |
ncomp += 3; |
310 |
break; |
311 |
case 'n': /* perturbed normal */ |
312 |
*table++ = oputn; |
313 |
ncomp += 3; |
314 |
castonly = 0; |
315 |
break; |
316 |
case 'N': /* unperturbed normal */ |
317 |
*table++ = oputN; |
318 |
ncomp += 3; |
319 |
break; |
320 |
case 's': /* surface */ |
321 |
*table++ = oputs; |
322 |
ncomp++; |
323 |
break; |
324 |
case 'w': /* weight */ |
325 |
*table++ = oputw; |
326 |
ncomp++; |
327 |
break; |
328 |
case 'W': /* coefficient */ |
329 |
*table++ = oputW; |
330 |
ncomp += 3; |
331 |
castonly = 0; |
332 |
if (ambounce > 0 && (ambacc > FTINY) | (ambssamp > 0)) |
333 |
error(WARNING, |
334 |
"-otW accuracy depends on -aa 0 -as 0"); |
335 |
break; |
336 |
case 'm': /* modifier */ |
337 |
*table++ = oputm; |
338 |
ncomp++; |
339 |
break; |
340 |
case 'M': /* material */ |
341 |
*table++ = oputM; |
342 |
ncomp++; |
343 |
break; |
344 |
case '~': /* tilde */ |
345 |
*table++ = oputtilde; |
346 |
break; |
347 |
default: |
348 |
sprintf(errmsg, "unrecognized output option '%c'", *vs); |
349 |
error(USER, errmsg); |
350 |
} |
351 |
while (*++vs); |
352 |
|
353 |
*table = NULL; |
354 |
if (*every_out != NULL) |
355 |
ncomp = 0; |
356 |
/* compatibility */ |
357 |
if ((do_irrad | imm_irrad) && castonly) |
358 |
error(USER, "-I+ and -i+ options require some value output"); |
359 |
for (table = ray_out; *table != NULL; table++) { |
360 |
if ((*table == oputV) | (*table == oputW)) |
361 |
error(WARNING, "-oVW options require trace mode"); |
362 |
if ((do_irrad | imm_irrad) && |
363 |
(*table == oputr) | (*table == oputR) | |
364 |
(*table == oputx) | (*table == oputX)) |
365 |
error(WARNING, "-orRxX options incompatible with -I+ and -i+"); |
366 |
} |
367 |
return(ncomp); |
368 |
} |
369 |
|
370 |
|
371 |
static void |
372 |
bogusray(void) /* print out empty record */ |
373 |
{ |
374 |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
375 |
printvals(&thisray); |
376 |
} |
377 |
|
378 |
|
379 |
static void |
380 |
raycast( /* compute first ray intersection only */ |
381 |
RAY *r |
382 |
) |
383 |
{ |
384 |
if (!localhit(r, &thescene)) { |
385 |
if (r->ro == &Aftplane) { /* clipped */ |
386 |
r->ro = NULL; |
387 |
r->rot = FHUGE; |
388 |
} else |
389 |
sourcehit(r); |
390 |
} |
391 |
} |
392 |
|
393 |
|
394 |
static void |
395 |
rayirrad( /* compute irradiance rather than radiance */ |
396 |
RAY *r |
397 |
) |
398 |
{ |
399 |
void (*old_revf)(RAY *) = r->revf; |
400 |
/* pretend we hit surface */ |
401 |
r->rxt = r->rot = 1e-5; |
402 |
VSUM(r->rop, r->rorg, r->rdir, r->rot); |
403 |
r->ron[0] = -r->rdir[0]; |
404 |
r->ron[1] = -r->rdir[1]; |
405 |
r->ron[2] = -r->rdir[2]; |
406 |
r->rod = 1.0; |
407 |
/* compute result */ |
408 |
r->revf = raytrace; |
409 |
(*ofun[Lamb.otype].funp)(&Lamb, r); |
410 |
r->revf = old_revf; |
411 |
} |
412 |
|
413 |
|
414 |
static void |
415 |
rtcompute( /* compute and print ray value(s) */ |
416 |
FVECT org, |
417 |
FVECT dir, |
418 |
double dmax |
419 |
) |
420 |
{ |
421 |
/* set up ray */ |
422 |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
423 |
if (imm_irrad) { |
424 |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
425 |
thisray.rdir[0] = -dir[0]; |
426 |
thisray.rdir[1] = -dir[1]; |
427 |
thisray.rdir[2] = -dir[2]; |
428 |
thisray.rmax = 0.0; |
429 |
thisray.revf = rayirrad; |
430 |
} else { |
431 |
VCOPY(thisray.rorg, org); |
432 |
VCOPY(thisray.rdir, dir); |
433 |
thisray.rmax = dmax; |
434 |
if (castonly) |
435 |
thisray.revf = raycast; |
436 |
} |
437 |
if (ray_pnprocs > 1) { /* multiprocessing FIFO? */ |
438 |
if (ray_fifo_in(&thisray) < 0) |
439 |
error(USER, "lost children"); |
440 |
return; |
441 |
} |
442 |
samplendx++; /* else do it ourselves */ |
443 |
rayvalue(&thisray); |
444 |
printvals(&thisray); |
445 |
} |
446 |
|
447 |
|
448 |
static int |
449 |
printvals( /* print requested ray values */ |
450 |
RAY *r |
451 |
) |
452 |
{ |
453 |
oputf_t **tp; |
454 |
|
455 |
if (ray_out[0] == NULL) |
456 |
return(0); |
457 |
for (tp = ray_out; *tp != NULL; tp++) |
458 |
(**tp)(r); |
459 |
if (outform == 'a') |
460 |
putchar('\n'); |
461 |
return(1); |
462 |
} |
463 |
|
464 |
|
465 |
static int |
466 |
is_fifo( /* check if file pointer connected to pipe */ |
467 |
FILE *fp |
468 |
) |
469 |
{ |
470 |
#ifdef S_ISFIFO |
471 |
struct stat sbuf; |
472 |
|
473 |
if (fstat(fileno(fp), &sbuf) < 0) |
474 |
error(SYSTEM, "fstat() failed on input stream"); |
475 |
return(S_ISFIFO(sbuf.st_mode)); |
476 |
#else |
477 |
return (fp == stdin); /* just a guess, really */ |
478 |
#endif |
479 |
} |
480 |
|
481 |
|
482 |
static int |
483 |
getvec( /* get a vector from fp */ |
484 |
FVECT vec, |
485 |
int fmt, |
486 |
FILE *fp |
487 |
) |
488 |
{ |
489 |
static float vf[3]; |
490 |
static double vd[3]; |
491 |
char buf[32]; |
492 |
int i; |
493 |
|
494 |
switch (fmt) { |
495 |
case 'a': /* ascii */ |
496 |
for (i = 0; i < 3; i++) { |
497 |
if (fgetword(buf, sizeof(buf), fp) == NULL || |
498 |
!isflt(buf)) |
499 |
return(-1); |
500 |
vec[i] = atof(buf); |
501 |
} |
502 |
break; |
503 |
case 'f': /* binary float */ |
504 |
if (getbinary(vf, sizeof(float), 3, fp) != 3) |
505 |
return(-1); |
506 |
VCOPY(vec, vf); |
507 |
break; |
508 |
case 'd': /* binary double */ |
509 |
if (getbinary(vd, sizeof(double), 3, fp) != 3) |
510 |
return(-1); |
511 |
VCOPY(vec, vd); |
512 |
break; |
513 |
default: |
514 |
error(CONSISTENCY, "botched input format"); |
515 |
} |
516 |
return(0); |
517 |
} |
518 |
|
519 |
|
520 |
static int |
521 |
iszerovec(const FVECT vec) |
522 |
{ |
523 |
return (vec[0] == 0.0) & (vec[1] == 0.0) & (vec[2] == 0.0); |
524 |
} |
525 |
|
526 |
|
527 |
static double |
528 |
nextray( /* return next ray in work group (-1.0 if EOF) */ |
529 |
FVECT org, |
530 |
FVECT dir |
531 |
) |
532 |
{ |
533 |
const size_t qlength = !vresolu * hresolu; |
534 |
|
535 |
if ((org == NULL) | (dir == NULL)) { |
536 |
if (inp_queue != NULL) /* asking to free queue */ |
537 |
free(inp_queue); |
538 |
inp_queue = NULL; |
539 |
inp_qpos = inp_qend = 0; |
540 |
return(-1.); |
541 |
} |
542 |
if (!inp_qend) { /* initialize FIFO queue */ |
543 |
int rsiz = 6*20; /* conservative ascii ray size */ |
544 |
if (inform == 'f') rsiz = 6*sizeof(float); |
545 |
else if (inform == 'd') rsiz = 6*sizeof(double); |
546 |
/* check against pipe limit */ |
547 |
if (qlength*rsiz > 512 && is_fifo(inpfp)) |
548 |
inp_queue = (FVECT *)malloc(sizeof(FVECT)*2*qlength); |
549 |
inp_qend = -(inp_queue == NULL); /* flag for no queue */ |
550 |
} |
551 |
if (inp_qend < 0) { /* not queuing? */ |
552 |
if (getvec(org, inform, inpfp) < 0 || |
553 |
getvec(dir, inform, inpfp) < 0) |
554 |
return(-1.); |
555 |
return normalize(dir); |
556 |
} |
557 |
if (inp_qpos >= inp_qend) { /* need to refill input queue? */ |
558 |
for (inp_qend = 0; inp_qend < qlength; inp_qend++) { |
559 |
if (getvec(inp_queue[2*inp_qend], inform, inpfp) < 0 |
560 |
|| getvec(inp_queue[2*inp_qend+1], |
561 |
inform, inpfp) < 0) |
562 |
break; /* hit EOF */ |
563 |
if (iszerovec(inp_queue[2*inp_qend+1])) { |
564 |
++inp_qend; /* flush request */ |
565 |
break; |
566 |
} |
567 |
} |
568 |
inp_qpos = 0; |
569 |
} |
570 |
if (inp_qpos >= inp_qend) /* unexpected EOF? */ |
571 |
return(-1.); |
572 |
VCOPY(org, inp_queue[2*inp_qpos]); |
573 |
VCOPY(dir, inp_queue[2*inp_qpos+1]); |
574 |
++inp_qpos; |
575 |
return normalize(dir); |
576 |
} |
577 |
|
578 |
|
579 |
void |
580 |
tranotify( /* record new modifier */ |
581 |
OBJECT obj |
582 |
) |
583 |
{ |
584 |
static int hitlimit = 0; |
585 |
OBJREC *o = objptr(obj); |
586 |
char **tralp; |
587 |
|
588 |
if (obj == OVOID) { /* starting over */ |
589 |
traset[0] = 0; |
590 |
hitlimit = 0; |
591 |
return; |
592 |
} |
593 |
if (hitlimit || !ismodifier(o->otype)) |
594 |
return; |
595 |
for (tralp = tralist; *tralp != NULL; tralp++) |
596 |
if (!strcmp(o->oname, *tralp)) { |
597 |
if (traset[0] >= MAXTSET) { |
598 |
error(WARNING, "too many modifiers in trace list"); |
599 |
hitlimit++; |
600 |
return; /* should this be fatal? */ |
601 |
} |
602 |
insertelem(traset, obj); |
603 |
return; |
604 |
} |
605 |
} |
606 |
|
607 |
|
608 |
static void |
609 |
ourtrace( /* print ray values */ |
610 |
RAY *r |
611 |
) |
612 |
{ |
613 |
oputf_t **tp; |
614 |
|
615 |
if (every_out[0] == NULL) |
616 |
return; |
617 |
if (r->ro == NULL) { |
618 |
if (traincl == 1) |
619 |
return; |
620 |
} else if (traincl != -1 && traincl != inset(traset, r->ro->omod)) |
621 |
return; |
622 |
tabin(r); |
623 |
for (tp = every_out; *tp != NULL; tp++) |
624 |
(**tp)(r); |
625 |
if (outform == 'a') |
626 |
putchar('\n'); |
627 |
} |
628 |
|
629 |
|
630 |
static void |
631 |
tabin( /* tab in appropriate amount */ |
632 |
RAY *r |
633 |
) |
634 |
{ |
635 |
const RAY *rp; |
636 |
|
637 |
for (rp = r->parent; rp != NULL; rp = rp->parent) |
638 |
putchar('\t'); |
639 |
} |
640 |
|
641 |
|
642 |
static void |
643 |
oputo( /* print origin */ |
644 |
RAY *r |
645 |
) |
646 |
{ |
647 |
(*putreal)(r->rorg, 3); |
648 |
} |
649 |
|
650 |
|
651 |
static void |
652 |
oputd( /* print direction */ |
653 |
RAY *r |
654 |
) |
655 |
{ |
656 |
(*putreal)(r->rdir, 3); |
657 |
} |
658 |
|
659 |
|
660 |
static void |
661 |
oputr( /* print mirrored contribution */ |
662 |
RAY *r |
663 |
) |
664 |
{ |
665 |
RREAL cval[3]; |
666 |
|
667 |
cval[0] = colval(r->mcol,RED); |
668 |
cval[1] = colval(r->mcol,GRN); |
669 |
cval[2] = colval(r->mcol,BLU); |
670 |
(*putreal)(cval, 3); |
671 |
} |
672 |
|
673 |
|
674 |
|
675 |
static void |
676 |
oputR( /* print mirrored distance */ |
677 |
RAY *r |
678 |
) |
679 |
{ |
680 |
(*putreal)(&r->rmt, 1); |
681 |
} |
682 |
|
683 |
|
684 |
static void |
685 |
oputx( /* print unmirrored contribution */ |
686 |
RAY *r |
687 |
) |
688 |
{ |
689 |
RREAL cval[3]; |
690 |
|
691 |
cval[0] = colval(r->rcol,RED) - colval(r->mcol,RED); |
692 |
cval[1] = colval(r->rcol,GRN) - colval(r->mcol,GRN); |
693 |
cval[2] = colval(r->rcol,BLU) - colval(r->mcol,BLU); |
694 |
(*putreal)(cval, 3); |
695 |
} |
696 |
|
697 |
|
698 |
static void |
699 |
oputX( /* print unmirrored distance */ |
700 |
RAY *r |
701 |
) |
702 |
{ |
703 |
(*putreal)(&r->rxt, 1); |
704 |
} |
705 |
|
706 |
|
707 |
static void |
708 |
oputv( /* print value */ |
709 |
RAY *r |
710 |
) |
711 |
{ |
712 |
RREAL cval[3]; |
713 |
|
714 |
cval[0] = colval(r->rcol,RED); |
715 |
cval[1] = colval(r->rcol,GRN); |
716 |
cval[2] = colval(r->rcol,BLU); |
717 |
(*putreal)(cval, 3); |
718 |
} |
719 |
|
720 |
|
721 |
static void |
722 |
oputV( /* print value contribution */ |
723 |
RAY *r |
724 |
) |
725 |
{ |
726 |
RREAL contr[3]; |
727 |
|
728 |
raycontrib(contr, r, PRIMARY); |
729 |
multcolor(contr, r->rcol); |
730 |
(*putreal)(contr, 3); |
731 |
} |
732 |
|
733 |
|
734 |
static void |
735 |
oputl( /* print effective distance */ |
736 |
RAY *r |
737 |
) |
738 |
{ |
739 |
RREAL d = raydistance(r); |
740 |
|
741 |
(*putreal)(&d, 1); |
742 |
} |
743 |
|
744 |
|
745 |
static void |
746 |
oputL( /* print single ray length */ |
747 |
RAY *r |
748 |
) |
749 |
{ |
750 |
(*putreal)(&r->rot, 1); |
751 |
} |
752 |
|
753 |
|
754 |
static void |
755 |
oputc( /* print local coordinates */ |
756 |
RAY *r |
757 |
) |
758 |
{ |
759 |
(*putreal)(r->uv, 2); |
760 |
} |
761 |
|
762 |
|
763 |
static RREAL vdummy[3] = {0.0, 0.0, 0.0}; |
764 |
|
765 |
|
766 |
static void |
767 |
oputp( /* print point */ |
768 |
RAY *r |
769 |
) |
770 |
{ |
771 |
if (r->rot < FHUGE*.99) |
772 |
(*putreal)(r->rop, 3); |
773 |
else |
774 |
(*putreal)(vdummy, 3); |
775 |
} |
776 |
|
777 |
|
778 |
static void |
779 |
oputN( /* print unperturbed normal */ |
780 |
RAY *r |
781 |
) |
782 |
{ |
783 |
if (r->rot < FHUGE*.99) { |
784 |
if (r->rflips & 1) { /* undo any flippin' flips */ |
785 |
FVECT unrm; |
786 |
unrm[0] = -r->ron[0]; |
787 |
unrm[1] = -r->ron[1]; |
788 |
unrm[2] = -r->ron[2]; |
789 |
(*putreal)(unrm, 3); |
790 |
} else |
791 |
(*putreal)(r->ron, 3); |
792 |
} else |
793 |
(*putreal)(vdummy, 3); |
794 |
} |
795 |
|
796 |
|
797 |
static void |
798 |
oputn( /* print perturbed normal */ |
799 |
RAY *r |
800 |
) |
801 |
{ |
802 |
FVECT pnorm; |
803 |
|
804 |
if (r->rot >= FHUGE*.99) { |
805 |
(*putreal)(vdummy, 3); |
806 |
return; |
807 |
} |
808 |
raynormal(pnorm, r); |
809 |
(*putreal)(pnorm, 3); |
810 |
} |
811 |
|
812 |
|
813 |
static void |
814 |
oputs( /* print name */ |
815 |
RAY *r |
816 |
) |
817 |
{ |
818 |
if (r->ro != NULL) |
819 |
fputs(r->ro->oname, stdout); |
820 |
else |
821 |
putchar('*'); |
822 |
putchar('\t'); |
823 |
} |
824 |
|
825 |
|
826 |
static void |
827 |
oputw( /* print weight */ |
828 |
RAY *r |
829 |
) |
830 |
{ |
831 |
RREAL rwt = r->rweight; |
832 |
|
833 |
(*putreal)(&rwt, 1); |
834 |
} |
835 |
|
836 |
|
837 |
static void |
838 |
oputW( /* print coefficient */ |
839 |
RAY *r |
840 |
) |
841 |
{ |
842 |
RREAL contr[3]; |
843 |
/* shadow ray not on source? */ |
844 |
if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
845 |
setcolor(contr, 0.0, 0.0, 0.0); |
846 |
else |
847 |
raycontrib(contr, r, PRIMARY); |
848 |
|
849 |
(*putreal)(contr, 3); |
850 |
} |
851 |
|
852 |
|
853 |
static void |
854 |
oputm( /* print modifier */ |
855 |
RAY *r |
856 |
) |
857 |
{ |
858 |
if (r->ro != NULL) |
859 |
if (r->ro->omod != OVOID) |
860 |
fputs(objptr(r->ro->omod)->oname, stdout); |
861 |
else |
862 |
fputs(VOIDID, stdout); |
863 |
else |
864 |
putchar('*'); |
865 |
putchar('\t'); |
866 |
} |
867 |
|
868 |
|
869 |
static void |
870 |
oputM( /* print material */ |
871 |
RAY *r |
872 |
) |
873 |
{ |
874 |
OBJREC *mat; |
875 |
|
876 |
if (r->ro != NULL) { |
877 |
if ((mat = findmaterial(r->ro)) != NULL) |
878 |
fputs(mat->oname, stdout); |
879 |
else |
880 |
fputs(VOIDID, stdout); |
881 |
} else |
882 |
putchar('*'); |
883 |
putchar('\t'); |
884 |
} |
885 |
|
886 |
|
887 |
static void |
888 |
oputtilde( /* output tilde (spacer) */ |
889 |
RAY *r |
890 |
) |
891 |
{ |
892 |
fputs("~\t", stdout); |
893 |
} |
894 |
|
895 |
|
896 |
static void |
897 |
puta( /* print ascii value(s) */ |
898 |
RREAL *v, int n |
899 |
) |
900 |
{ |
901 |
if (n == 3) { |
902 |
printf("%e\t%e\t%e\t", v[0], v[1], v[2]); |
903 |
return; |
904 |
} |
905 |
while (n--) |
906 |
printf("%e\t", *v++); |
907 |
} |
908 |
|
909 |
|
910 |
static void |
911 |
putd(RREAL *v, int n) /* output binary double(s) */ |
912 |
{ |
913 |
#ifdef SMLFLT |
914 |
double da[3]; |
915 |
int i; |
916 |
|
917 |
if (n > 3) |
918 |
error(INTERNAL, "code error in putd()"); |
919 |
for (i = n; i--; ) |
920 |
da[i] = v[i]; |
921 |
putbinary(da, sizeof(double), n, stdout); |
922 |
#else |
923 |
putbinary(v, sizeof(RREAL), n, stdout); |
924 |
#endif |
925 |
} |
926 |
|
927 |
|
928 |
static void |
929 |
putf(RREAL *v, int n) /* output binary float(s) */ |
930 |
{ |
931 |
#ifndef SMLFLT |
932 |
float fa[3]; |
933 |
int i; |
934 |
|
935 |
if (n > 3) |
936 |
error(INTERNAL, "code error in putf()"); |
937 |
for (i = n; i--; ) |
938 |
fa[i] = v[i]; |
939 |
putbinary(fa, sizeof(float), n, stdout); |
940 |
#else |
941 |
putbinary(v, sizeof(RREAL), n, stdout); |
942 |
#endif |
943 |
} |
944 |
|
945 |
|
946 |
static void |
947 |
putrgbe(RREAL *v, int n) /* output RGBE color */ |
948 |
{ |
949 |
COLR cout; |
950 |
|
951 |
if (n != 3) |
952 |
error(INTERNAL, "putrgbe() not called with 3 components"); |
953 |
setcolr(cout, v[0], v[1], v[2]); |
954 |
putbinary(cout, sizeof(cout), 1, stdout); |
955 |
} |