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#ifndef lint |
2 |
static const char RCSid[] = "$Id: rtrace.c,v 2.94 2020/04/06 21:09:07 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" |
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#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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|
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int castonly = 0; /* only doing ray-casting? */ |
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|
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#ifndef MAXTSET |
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#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 */ |
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|
55 |
static RAY thisray; /* for our convenience */ |
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|
57 |
static FILE *inpfp = NULL; /* input stream pointer */ |
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|
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 */ |
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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 |
} |
103 |
|
104 |
|
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char * |
106 |
formstr( /* return format identifier */ |
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int f |
108 |
) |
109 |
{ |
110 |
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 |
} |
118 |
|
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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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) |
125 |
{ |
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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) |
135 |
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); |
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error(SYSTEM, errmsg); |
139 |
} |
140 |
#ifdef getc_unlocked |
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flockfile(inpfp); /* avoid lock/unlock overhead */ |
142 |
flockfile(stdout); |
143 |
#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) { |
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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 |
} |
168 |
if (hresolu > 0) { |
169 |
if (vresolu > 0) |
170 |
fprtresolu(hresolu, vresolu, stdout); |
171 |
else |
172 |
fflush(stdout); |
173 |
} |
174 |
/* process input rays */ |
175 |
while ((d = nextray(orig, direc)) >= 0.0) { |
176 |
if (d == 0.0) { /* flush request? */ |
177 |
if (something2flush) { |
178 |
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
179 |
error(USER, "child(ren) died"); |
180 |
bogusray(); |
181 |
fflush(stdout); |
182 |
nextflush = (!vresolu | (hresolu <= 1)) * hresolu; |
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something2flush = 0; |
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} else |
185 |
bogusray(); |
186 |
} else { /* compute and print */ |
187 |
rtcompute(orig, direc, lim_dist ? d : 0.0); |
188 |
if (!--nextflush) { /* flush if time */ |
189 |
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
190 |
error(USER, "child(ren) died"); |
191 |
fflush(stdout); |
192 |
nextflush = hresolu; |
193 |
} else |
194 |
something2flush = 1; |
195 |
} |
196 |
if (ferror(stdout)) |
197 |
error(SYSTEM, "write error"); |
198 |
if (vcount && !--vcount) /* check for end */ |
199 |
break; |
200 |
} |
201 |
if (ray_pnprocs > 1) { /* clean up children */ |
202 |
if (ray_fifo_flush() < 0) |
203 |
error(USER, "unable to complete processing"); |
204 |
ray_pclose(0); |
205 |
} |
206 |
if (vcount) |
207 |
error(WARNING, "unexpected EOF on input"); |
208 |
if (fflush(stdout) < 0) |
209 |
error(SYSTEM, "write error"); |
210 |
if (fname != NULL) { |
211 |
fclose(inpfp); |
212 |
inpfp = NULL; |
213 |
} |
214 |
nextray(NULL, NULL); |
215 |
} |
216 |
|
217 |
|
218 |
static void |
219 |
trace_sources(void) /* trace rays to light sources, also */ |
220 |
{ |
221 |
int sn; |
222 |
|
223 |
for (sn = 0; sn < nsources; sn++) |
224 |
source[sn].sflags |= SFOLLOW; |
225 |
} |
226 |
|
227 |
|
228 |
int |
229 |
setrtoutput(void) /* set up output tables, return #comp */ |
230 |
{ |
231 |
char *vs = outvals; |
232 |
oputf_t **table = ray_out; |
233 |
int ncomp = 0; |
234 |
|
235 |
if (!*vs) |
236 |
error(USER, "empty output specification"); |
237 |
|
238 |
castonly = 1; /* sets castonly as side-effect */ |
239 |
do |
240 |
switch (*vs) { |
241 |
case 'T': /* trace sources */ |
242 |
if (!vs[1]) break; |
243 |
trace_sources(); |
244 |
/* fall through */ |
245 |
case 't': /* trace */ |
246 |
if (!vs[1]) break; |
247 |
*table = NULL; |
248 |
table = every_out; |
249 |
trace = ourtrace; |
250 |
castonly = 0; |
251 |
break; |
252 |
case 'o': /* origin */ |
253 |
*table++ = oputo; |
254 |
ncomp += 3; |
255 |
break; |
256 |
case 'd': /* direction */ |
257 |
*table++ = oputd; |
258 |
ncomp += 3; |
259 |
break; |
260 |
case 'r': /* reflected contrib. */ |
261 |
*table++ = oputr; |
262 |
ncomp += 3; |
263 |
castonly = 0; |
264 |
break; |
265 |
case 'R': /* reflected distance */ |
266 |
*table++ = oputR; |
267 |
ncomp++; |
268 |
castonly = 0; |
269 |
break; |
270 |
case 'x': /* xmit contrib. */ |
271 |
*table++ = oputx; |
272 |
ncomp += 3; |
273 |
castonly = 0; |
274 |
break; |
275 |
case 'X': /* xmit distance */ |
276 |
*table++ = oputX; |
277 |
ncomp++; |
278 |
castonly = 0; |
279 |
break; |
280 |
case 'v': /* value */ |
281 |
*table++ = oputv; |
282 |
ncomp += 3; |
283 |
castonly = 0; |
284 |
break; |
285 |
case 'V': /* contribution */ |
286 |
*table++ = oputV; |
287 |
ncomp += 3; |
288 |
castonly = 0; |
289 |
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
290 |
error(WARNING, |
291 |
"-otV accuracy depends on -aa 0 -as 0"); |
292 |
break; |
293 |
case 'l': /* effective distance */ |
294 |
*table++ = oputl; |
295 |
ncomp++; |
296 |
castonly = 0; |
297 |
break; |
298 |
case 'c': /* local coordinates */ |
299 |
*table++ = oputc; |
300 |
ncomp += 2; |
301 |
break; |
302 |
case 'L': /* single ray length */ |
303 |
*table++ = oputL; |
304 |
ncomp++; |
305 |
break; |
306 |
case 'p': /* point */ |
307 |
*table++ = oputp; |
308 |
ncomp += 3; |
309 |
break; |
310 |
case 'n': /* perturbed normal */ |
311 |
*table++ = oputn; |
312 |
ncomp += 3; |
313 |
castonly = 0; |
314 |
break; |
315 |
case 'N': /* unperturbed normal */ |
316 |
*table++ = oputN; |
317 |
ncomp += 3; |
318 |
break; |
319 |
case 's': /* surface */ |
320 |
*table++ = oputs; |
321 |
ncomp++; |
322 |
break; |
323 |
case 'w': /* weight */ |
324 |
*table++ = oputw; |
325 |
ncomp++; |
326 |
break; |
327 |
case 'W': /* coefficient */ |
328 |
*table++ = oputW; |
329 |
ncomp += 3; |
330 |
castonly = 0; |
331 |
if (ambounce > 0 && (ambacc > FTINY) | (ambssamp > 0)) |
332 |
error(WARNING, |
333 |
"-otW accuracy depends on -aa 0 -as 0"); |
334 |
break; |
335 |
case 'm': /* modifier */ |
336 |
*table++ = oputm; |
337 |
ncomp++; |
338 |
break; |
339 |
case 'M': /* material */ |
340 |
*table++ = oputM; |
341 |
ncomp++; |
342 |
break; |
343 |
case '~': /* tilde */ |
344 |
*table++ = oputtilde; |
345 |
break; |
346 |
default: |
347 |
sprintf(errmsg, "unrecognized output option '%c'", *vs); |
348 |
error(USER, errmsg); |
349 |
} |
350 |
while (*++vs); |
351 |
|
352 |
*table = NULL; |
353 |
if (*every_out != NULL) |
354 |
ncomp = 0; |
355 |
/* compatibility */ |
356 |
if ((do_irrad | imm_irrad) && castonly) |
357 |
error(USER, "-I+ and -i+ options require some value output"); |
358 |
for (table = ray_out; *table != NULL; table++) { |
359 |
if ((*table == oputV) | (*table == oputW)) |
360 |
error(WARNING, "-oVW options require trace mode"); |
361 |
if ((do_irrad | imm_irrad) && |
362 |
(*table == oputr) | (*table == oputR) | |
363 |
(*table == oputx) | (*table == oputX)) |
364 |
error(WARNING, "-orRxX options incompatible with -I+ and -i+"); |
365 |
} |
366 |
return(ncomp); |
367 |
} |
368 |
|
369 |
|
370 |
static void |
371 |
bogusray(void) /* print out empty record */ |
372 |
{ |
373 |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
374 |
printvals(&thisray); |
375 |
} |
376 |
|
377 |
|
378 |
static void |
379 |
raycast( /* compute first ray intersection only */ |
380 |
RAY *r |
381 |
) |
382 |
{ |
383 |
if (!localhit(r, &thescene)) { |
384 |
if (r->ro == &Aftplane) { /* clipped */ |
385 |
r->ro = NULL; |
386 |
r->rot = FHUGE; |
387 |
} else |
388 |
sourcehit(r); |
389 |
} |
390 |
} |
391 |
|
392 |
|
393 |
static void |
394 |
rayirrad( /* compute irradiance rather than radiance */ |
395 |
RAY *r |
396 |
) |
397 |
{ |
398 |
void (*old_revf)(RAY *) = r->revf; |
399 |
/* pretend we hit surface */ |
400 |
r->rxt = r->rot = 1e-5; |
401 |
VSUM(r->rop, r->rorg, r->rdir, r->rot); |
402 |
r->ron[0] = -r->rdir[0]; |
403 |
r->ron[1] = -r->rdir[1]; |
404 |
r->ron[2] = -r->rdir[2]; |
405 |
r->rod = 1.0; |
406 |
/* compute result */ |
407 |
r->revf = raytrace; |
408 |
(*ofun[Lamb.otype].funp)(&Lamb, r); |
409 |
r->revf = old_revf; |
410 |
} |
411 |
|
412 |
|
413 |
static void |
414 |
rtcompute( /* compute and print ray value(s) */ |
415 |
FVECT org, |
416 |
FVECT dir, |
417 |
double dmax |
418 |
) |
419 |
{ |
420 |
/* set up ray */ |
421 |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
422 |
if (imm_irrad) { |
423 |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
424 |
thisray.rdir[0] = -dir[0]; |
425 |
thisray.rdir[1] = -dir[1]; |
426 |
thisray.rdir[2] = -dir[2]; |
427 |
thisray.rmax = 0.0; |
428 |
thisray.revf = rayirrad; |
429 |
} else { |
430 |
VCOPY(thisray.rorg, org); |
431 |
VCOPY(thisray.rdir, dir); |
432 |
thisray.rmax = dmax; |
433 |
if (castonly) |
434 |
thisray.revf = raycast; |
435 |
} |
436 |
if (ray_pnprocs > 1) { /* multiprocessing FIFO? */ |
437 |
if (ray_fifo_in(&thisray) < 0) |
438 |
error(USER, "lost children"); |
439 |
return; |
440 |
} |
441 |
samplendx++; /* else do it ourselves */ |
442 |
rayvalue(&thisray); |
443 |
printvals(&thisray); |
444 |
} |
445 |
|
446 |
|
447 |
static int |
448 |
printvals( /* print requested ray values */ |
449 |
RAY *r |
450 |
) |
451 |
{ |
452 |
oputf_t **tp; |
453 |
|
454 |
if (ray_out[0] == NULL) |
455 |
return(0); |
456 |
for (tp = ray_out; *tp != NULL; tp++) |
457 |
(**tp)(r); |
458 |
if (outform == 'a') |
459 |
putchar('\n'); |
460 |
return(1); |
461 |
} |
462 |
|
463 |
|
464 |
static int |
465 |
is_fifo( /* check if file pointer connected to pipe */ |
466 |
FILE *fp |
467 |
) |
468 |
{ |
469 |
#ifdef S_ISFIFO |
470 |
struct stat sbuf; |
471 |
|
472 |
if (fstat(fileno(fp), &sbuf) < 0) |
473 |
error(SYSTEM, "fstat() failed on input stream"); |
474 |
return(S_ISFIFO(sbuf.st_mode)); |
475 |
#else |
476 |
return (fp == stdin); /* just a guess, really */ |
477 |
#endif |
478 |
} |
479 |
|
480 |
|
481 |
static int |
482 |
getvec( /* get a vector from fp */ |
483 |
FVECT vec, |
484 |
int fmt, |
485 |
FILE *fp |
486 |
) |
487 |
{ |
488 |
static float vf[3]; |
489 |
static double vd[3]; |
490 |
char buf[32]; |
491 |
int i; |
492 |
|
493 |
switch (fmt) { |
494 |
case 'a': /* ascii */ |
495 |
for (i = 0; i < 3; i++) { |
496 |
if (fgetword(buf, sizeof(buf), fp) == NULL || |
497 |
!isflt(buf)) |
498 |
return(-1); |
499 |
vec[i] = atof(buf); |
500 |
} |
501 |
break; |
502 |
case 'f': /* binary float */ |
503 |
if (getbinary(vf, sizeof(float), 3, fp) != 3) |
504 |
return(-1); |
505 |
VCOPY(vec, vf); |
506 |
break; |
507 |
case 'd': /* binary double */ |
508 |
if (getbinary(vd, sizeof(double), 3, fp) != 3) |
509 |
return(-1); |
510 |
VCOPY(vec, vd); |
511 |
break; |
512 |
default: |
513 |
error(CONSISTENCY, "botched input format"); |
514 |
} |
515 |
return(0); |
516 |
} |
517 |
|
518 |
|
519 |
static int |
520 |
iszerovec(const FVECT vec) |
521 |
{ |
522 |
return (vec[0] == 0.0) & (vec[1] == 0.0) & (vec[2] == 0.0); |
523 |
} |
524 |
|
525 |
|
526 |
static double |
527 |
nextray( /* return next ray in work group (-1.0 if EOF) */ |
528 |
FVECT org, |
529 |
FVECT dir |
530 |
) |
531 |
{ |
532 |
const size_t qlength = !vresolu * hresolu; |
533 |
|
534 |
if ((org == NULL) | (dir == NULL)) { |
535 |
if (inp_queue != NULL) /* asking to free queue */ |
536 |
free(inp_queue); |
537 |
inp_queue = NULL; |
538 |
inp_qpos = inp_qend = 0; |
539 |
return(-1.); |
540 |
} |
541 |
if (!inp_qend) { /* initialize FIFO queue */ |
542 |
int rsiz = 6*20; /* conservative ascii ray size */ |
543 |
if (inform == 'f') rsiz = 6*sizeof(float); |
544 |
else if (inform == 'd') rsiz = 6*sizeof(double); |
545 |
/* check against pipe limit */ |
546 |
if (qlength*rsiz > 512 && is_fifo(inpfp)) |
547 |
inp_queue = (FVECT *)malloc(sizeof(FVECT)*2*qlength); |
548 |
inp_qend = -(inp_queue == NULL); /* flag for no queue */ |
549 |
} |
550 |
if (inp_qend < 0) { /* not queuing? */ |
551 |
if (getvec(org, inform, inpfp) < 0 || |
552 |
getvec(dir, inform, inpfp) < 0) |
553 |
return(-1.); |
554 |
return normalize(dir); |
555 |
} |
556 |
if (inp_qpos >= inp_qend) { /* need to refill input queue? */ |
557 |
for (inp_qend = 0; inp_qend < qlength; inp_qend++) { |
558 |
if (getvec(inp_queue[2*inp_qend], inform, inpfp) < 0 |
559 |
|| getvec(inp_queue[2*inp_qend+1], |
560 |
inform, inpfp) < 0) |
561 |
break; /* hit EOF */ |
562 |
if (iszerovec(inp_queue[2*inp_qend+1])) { |
563 |
++inp_qend; /* flush request */ |
564 |
break; |
565 |
} |
566 |
} |
567 |
inp_qpos = 0; |
568 |
} |
569 |
if (inp_qpos >= inp_qend) /* unexpected EOF? */ |
570 |
return(-1.); |
571 |
VCOPY(org, inp_queue[2*inp_qpos]); |
572 |
VCOPY(dir, inp_queue[2*inp_qpos+1]); |
573 |
++inp_qpos; |
574 |
return normalize(dir); |
575 |
} |
576 |
|
577 |
|
578 |
void |
579 |
tranotify( /* record new modifier */ |
580 |
OBJECT obj |
581 |
) |
582 |
{ |
583 |
static int hitlimit = 0; |
584 |
OBJREC *o = objptr(obj); |
585 |
char **tralp; |
586 |
|
587 |
if (obj == OVOID) { /* starting over */ |
588 |
traset[0] = 0; |
589 |
hitlimit = 0; |
590 |
return; |
591 |
} |
592 |
if (hitlimit || !ismodifier(o->otype)) |
593 |
return; |
594 |
for (tralp = tralist; *tralp != NULL; tralp++) |
595 |
if (!strcmp(o->oname, *tralp)) { |
596 |
if (traset[0] >= MAXTSET) { |
597 |
error(WARNING, "too many modifiers in trace list"); |
598 |
hitlimit++; |
599 |
return; /* should this be fatal? */ |
600 |
} |
601 |
insertelem(traset, obj); |
602 |
return; |
603 |
} |
604 |
} |
605 |
|
606 |
|
607 |
static void |
608 |
ourtrace( /* print ray values */ |
609 |
RAY *r |
610 |
) |
611 |
{ |
612 |
oputf_t **tp; |
613 |
|
614 |
if (every_out[0] == NULL) |
615 |
return; |
616 |
if (r->ro == NULL) { |
617 |
if (traincl == 1) |
618 |
return; |
619 |
} else if (traincl != -1 && traincl != inset(traset, r->ro->omod)) |
620 |
return; |
621 |
tabin(r); |
622 |
for (tp = every_out; *tp != NULL; tp++) |
623 |
(**tp)(r); |
624 |
if (outform == 'a') |
625 |
putchar('\n'); |
626 |
} |
627 |
|
628 |
|
629 |
static void |
630 |
tabin( /* tab in appropriate amount */ |
631 |
RAY *r |
632 |
) |
633 |
{ |
634 |
const RAY *rp; |
635 |
|
636 |
for (rp = r->parent; rp != NULL; rp = rp->parent) |
637 |
putchar('\t'); |
638 |
} |
639 |
|
640 |
|
641 |
static void |
642 |
oputo( /* print origin */ |
643 |
RAY *r |
644 |
) |
645 |
{ |
646 |
(*putreal)(r->rorg, 3); |
647 |
} |
648 |
|
649 |
|
650 |
static void |
651 |
oputd( /* print direction */ |
652 |
RAY *r |
653 |
) |
654 |
{ |
655 |
(*putreal)(r->rdir, 3); |
656 |
} |
657 |
|
658 |
|
659 |
static void |
660 |
oputr( /* print mirrored contribution */ |
661 |
RAY *r |
662 |
) |
663 |
{ |
664 |
RREAL cval[3]; |
665 |
|
666 |
cval[0] = colval(r->mcol,RED); |
667 |
cval[1] = colval(r->mcol,GRN); |
668 |
cval[2] = colval(r->mcol,BLU); |
669 |
(*putreal)(cval, 3); |
670 |
} |
671 |
|
672 |
|
673 |
|
674 |
static void |
675 |
oputR( /* print mirrored distance */ |
676 |
RAY *r |
677 |
) |
678 |
{ |
679 |
(*putreal)(&r->rmt, 1); |
680 |
} |
681 |
|
682 |
|
683 |
static void |
684 |
oputx( /* print unmirrored contribution */ |
685 |
RAY *r |
686 |
) |
687 |
{ |
688 |
RREAL cval[3]; |
689 |
|
690 |
cval[0] = colval(r->rcol,RED) - colval(r->mcol,RED); |
691 |
cval[1] = colval(r->rcol,GRN) - colval(r->mcol,GRN); |
692 |
cval[2] = colval(r->rcol,BLU) - colval(r->mcol,BLU); |
693 |
(*putreal)(cval, 3); |
694 |
} |
695 |
|
696 |
|
697 |
static void |
698 |
oputX( /* print unmirrored distance */ |
699 |
RAY *r |
700 |
) |
701 |
{ |
702 |
(*putreal)(&r->rxt, 1); |
703 |
} |
704 |
|
705 |
|
706 |
static void |
707 |
oputv( /* print value */ |
708 |
RAY *r |
709 |
) |
710 |
{ |
711 |
RREAL cval[3]; |
712 |
|
713 |
cval[0] = colval(r->rcol,RED); |
714 |
cval[1] = colval(r->rcol,GRN); |
715 |
cval[2] = colval(r->rcol,BLU); |
716 |
(*putreal)(cval, 3); |
717 |
} |
718 |
|
719 |
|
720 |
static void |
721 |
oputV( /* print value contribution */ |
722 |
RAY *r |
723 |
) |
724 |
{ |
725 |
RREAL contr[3]; |
726 |
|
727 |
raycontrib(contr, r, PRIMARY); |
728 |
multcolor(contr, r->rcol); |
729 |
(*putreal)(contr, 3); |
730 |
} |
731 |
|
732 |
|
733 |
static void |
734 |
oputl( /* print effective distance */ |
735 |
RAY *r |
736 |
) |
737 |
{ |
738 |
RREAL d = raydistance(r); |
739 |
|
740 |
(*putreal)(&d, 1); |
741 |
} |
742 |
|
743 |
|
744 |
static void |
745 |
oputL( /* print single ray length */ |
746 |
RAY *r |
747 |
) |
748 |
{ |
749 |
(*putreal)(&r->rot, 1); |
750 |
} |
751 |
|
752 |
|
753 |
static void |
754 |
oputc( /* print local coordinates */ |
755 |
RAY *r |
756 |
) |
757 |
{ |
758 |
(*putreal)(r->uv, 2); |
759 |
} |
760 |
|
761 |
|
762 |
static RREAL vdummy[3] = {0.0, 0.0, 0.0}; |
763 |
|
764 |
|
765 |
static void |
766 |
oputp( /* print point */ |
767 |
RAY *r |
768 |
) |
769 |
{ |
770 |
if (r->rot < FHUGE*.99) |
771 |
(*putreal)(r->rop, 3); |
772 |
else |
773 |
(*putreal)(vdummy, 3); |
774 |
} |
775 |
|
776 |
|
777 |
static void |
778 |
oputN( /* print unperturbed normal */ |
779 |
RAY *r |
780 |
) |
781 |
{ |
782 |
if (r->rot < FHUGE*.99) { |
783 |
if (r->rflips & 1) { /* undo any flippin' flips */ |
784 |
FVECT unrm; |
785 |
unrm[0] = -r->ron[0]; |
786 |
unrm[1] = -r->ron[1]; |
787 |
unrm[2] = -r->ron[2]; |
788 |
(*putreal)(unrm, 3); |
789 |
} else |
790 |
(*putreal)(r->ron, 3); |
791 |
} else |
792 |
(*putreal)(vdummy, 3); |
793 |
} |
794 |
|
795 |
|
796 |
static void |
797 |
oputn( /* print perturbed normal */ |
798 |
RAY *r |
799 |
) |
800 |
{ |
801 |
FVECT pnorm; |
802 |
|
803 |
if (r->rot >= FHUGE*.99) { |
804 |
(*putreal)(vdummy, 3); |
805 |
return; |
806 |
} |
807 |
raynormal(pnorm, r); |
808 |
(*putreal)(pnorm, 3); |
809 |
} |
810 |
|
811 |
|
812 |
static void |
813 |
oputs( /* print name */ |
814 |
RAY *r |
815 |
) |
816 |
{ |
817 |
if (r->ro != NULL) |
818 |
fputs(r->ro->oname, stdout); |
819 |
else |
820 |
putchar('*'); |
821 |
putchar('\t'); |
822 |
} |
823 |
|
824 |
|
825 |
static void |
826 |
oputw( /* print weight */ |
827 |
RAY *r |
828 |
) |
829 |
{ |
830 |
RREAL rwt = r->rweight; |
831 |
|
832 |
(*putreal)(&rwt, 1); |
833 |
} |
834 |
|
835 |
|
836 |
static void |
837 |
oputW( /* print coefficient */ |
838 |
RAY *r |
839 |
) |
840 |
{ |
841 |
RREAL contr[3]; |
842 |
/* shadow ray not on source? */ |
843 |
if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
844 |
setcolor(contr, 0.0, 0.0, 0.0); |
845 |
else |
846 |
raycontrib(contr, r, PRIMARY); |
847 |
|
848 |
(*putreal)(contr, 3); |
849 |
} |
850 |
|
851 |
|
852 |
static void |
853 |
oputm( /* print modifier */ |
854 |
RAY *r |
855 |
) |
856 |
{ |
857 |
if (r->ro != NULL) |
858 |
if (r->ro->omod != OVOID) |
859 |
fputs(objptr(r->ro->omod)->oname, stdout); |
860 |
else |
861 |
fputs(VOIDID, stdout); |
862 |
else |
863 |
putchar('*'); |
864 |
putchar('\t'); |
865 |
} |
866 |
|
867 |
|
868 |
static void |
869 |
oputM( /* print material */ |
870 |
RAY *r |
871 |
) |
872 |
{ |
873 |
OBJREC *mat; |
874 |
|
875 |
if (r->ro != NULL) { |
876 |
if ((mat = findmaterial(r->ro)) != NULL) |
877 |
fputs(mat->oname, stdout); |
878 |
else |
879 |
fputs(VOIDID, stdout); |
880 |
} else |
881 |
putchar('*'); |
882 |
putchar('\t'); |
883 |
} |
884 |
|
885 |
|
886 |
static void |
887 |
oputtilde( /* output tilde (spacer) */ |
888 |
RAY *r |
889 |
) |
890 |
{ |
891 |
fputs("~\t", stdout); |
892 |
} |
893 |
|
894 |
|
895 |
static void |
896 |
puta( /* print ascii value(s) */ |
897 |
RREAL *v, int n |
898 |
) |
899 |
{ |
900 |
if (n == 3) { |
901 |
printf("%e\t%e\t%e\t", v[0], v[1], v[2]); |
902 |
return; |
903 |
} |
904 |
while (n--) |
905 |
printf("%e\t", *v++); |
906 |
} |
907 |
|
908 |
|
909 |
static void |
910 |
putd(RREAL *v, int n) /* output binary double(s) */ |
911 |
{ |
912 |
#ifdef SMLFLT |
913 |
double da[3]; |
914 |
int i; |
915 |
|
916 |
if (n > 3) |
917 |
error(INTERNAL, "code error in putd()"); |
918 |
for (i = n; i--; ) |
919 |
da[i] = v[i]; |
920 |
putbinary(da, sizeof(double), n, stdout); |
921 |
#else |
922 |
putbinary(v, sizeof(RREAL), n, stdout); |
923 |
#endif |
924 |
} |
925 |
|
926 |
|
927 |
static void |
928 |
putf(RREAL *v, int n) /* output binary float(s) */ |
929 |
{ |
930 |
#ifndef SMLFLT |
931 |
float fa[3]; |
932 |
int i; |
933 |
|
934 |
if (n > 3) |
935 |
error(INTERNAL, "code error in putf()"); |
936 |
for (i = n; i--; ) |
937 |
fa[i] = v[i]; |
938 |
putbinary(fa, sizeof(float), n, stdout); |
939 |
#else |
940 |
putbinary(v, sizeof(RREAL), n, stdout); |
941 |
#endif |
942 |
} |
943 |
|
944 |
|
945 |
static void |
946 |
putrgbe(RREAL *v, int n) /* output RGBE color */ |
947 |
{ |
948 |
COLR cout; |
949 |
|
950 |
if (n != 3) |
951 |
error(INTERNAL, "putrgbe() not called with 3 components"); |
952 |
setcolr(cout, v[0], v[1], v[2]); |
953 |
putbinary(cout, sizeof(cout), 1, stdout); |
954 |
} |