1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: rv2.c,v 2.44 2005/01/18 00:33:16 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* rv2.c - command routines used in tracing a view. |
6 |
* |
7 |
* External symbols declared in rpaint.h |
8 |
*/ |
9 |
|
10 |
#include "copyright.h" |
11 |
|
12 |
#include <ctype.h> |
13 |
#include <string.h> |
14 |
|
15 |
#include "platform.h" |
16 |
#include "ray.h" |
17 |
#include "ambient.h" |
18 |
#include "otypes.h" |
19 |
#include "rpaint.h" |
20 |
|
21 |
extern int psample; /* pixel sample size */ |
22 |
extern double maxdiff; /* max. sample difference */ |
23 |
|
24 |
#define CTRL(c) ((c)-'@') |
25 |
|
26 |
#ifdef SMLFLT |
27 |
#define sscanvec(s,v) (sscanf(s,"%f %f %f",v,v+1,v+2)==3) |
28 |
#else |
29 |
#define sscanvec(s,v) (sscanf(s,"%lf %lf %lf",v,v+1,v+2)==3) |
30 |
#endif |
31 |
|
32 |
extern char rifname[128]; /* rad input file name */ |
33 |
|
34 |
extern char *progname; |
35 |
extern char *octname; |
36 |
|
37 |
|
38 |
extern void |
39 |
getframe( /* get a new frame */ |
40 |
char *s |
41 |
) |
42 |
{ |
43 |
if (getrect(s, &pframe) < 0) |
44 |
return; |
45 |
pdepth = 0; |
46 |
} |
47 |
|
48 |
|
49 |
extern void |
50 |
getrepaint( /* get area and repaint */ |
51 |
char *s |
52 |
) |
53 |
{ |
54 |
RECT box; |
55 |
|
56 |
if (getrect(s, &box) < 0) |
57 |
return; |
58 |
paintrect(&ptrunk, 0, 0, hresolu, vresolu, &box); |
59 |
} |
60 |
|
61 |
|
62 |
extern void |
63 |
getview( /* get/show view parameters */ |
64 |
char *s |
65 |
) |
66 |
{ |
67 |
FILE *fp; |
68 |
char buf[128]; |
69 |
char *fname; |
70 |
int change = 0; |
71 |
VIEW nv = ourview; |
72 |
|
73 |
while (isspace(*s)) |
74 |
s++; |
75 |
if (*s == '-') { /* command line parameters */ |
76 |
if (sscanview(&nv, s)) |
77 |
newview(&nv); |
78 |
else |
79 |
error(COMMAND, "bad view option(s)"); |
80 |
return; |
81 |
} |
82 |
if (sscanf(s, "%s", buf) == 1) { /* write parameters to a file */ |
83 |
if ((fname = getpath(buf, NULL, 0)) == NULL || |
84 |
(fp = fopen(fname, "a")) == NULL) { |
85 |
sprintf(errmsg, "cannot open \"%s\"", buf); |
86 |
error(COMMAND, errmsg); |
87 |
return; |
88 |
} |
89 |
fputs(progname, fp); |
90 |
fprintview(&ourview, fp); |
91 |
fputs(sskip(s), fp); |
92 |
putc('\n', fp); |
93 |
fclose(fp); |
94 |
return; |
95 |
} |
96 |
sprintf(buf, "view type (%c): ", ourview.type); |
97 |
(*dev->comout)(buf); |
98 |
(*dev->comin)(buf, NULL); |
99 |
if (buf[0] == CTRL('C')) return; |
100 |
if (buf[0] && buf[0] != ourview.type) { |
101 |
nv.type = buf[0]; |
102 |
change++; |
103 |
} |
104 |
sprintf(buf, "view point (%.6g %.6g %.6g): ", |
105 |
ourview.vp[0], ourview.vp[1], ourview.vp[2]); |
106 |
(*dev->comout)(buf); |
107 |
(*dev->comin)(buf, NULL); |
108 |
if (buf[0] == CTRL('C')) return; |
109 |
if (sscanvec(buf, nv.vp)) |
110 |
change++; |
111 |
sprintf(buf, "view direction (%.6g %.6g %.6g): ", |
112 |
ourview.vdir[0]*ourview.vdist, |
113 |
ourview.vdir[1]*ourview.vdist, |
114 |
ourview.vdir[2]*ourview.vdist); |
115 |
(*dev->comout)(buf); |
116 |
(*dev->comin)(buf, NULL); |
117 |
if (buf[0] == CTRL('C')) return; |
118 |
if (sscanvec(buf, nv.vdir)) { |
119 |
nv.vdist = 1.; |
120 |
change++; |
121 |
} |
122 |
sprintf(buf, "view up (%.6g %.6g %.6g): ", |
123 |
ourview.vup[0], ourview.vup[1], ourview.vup[2]); |
124 |
(*dev->comout)(buf); |
125 |
(*dev->comin)(buf, NULL); |
126 |
if (buf[0] == CTRL('C')) return; |
127 |
if (sscanvec(buf, nv.vup)) |
128 |
change++; |
129 |
sprintf(buf, "view horiz and vert size (%.6g %.6g): ", |
130 |
ourview.horiz, ourview.vert); |
131 |
(*dev->comout)(buf); |
132 |
(*dev->comin)(buf, NULL); |
133 |
if (buf[0] == CTRL('C')) return; |
134 |
if (sscanf(buf, "%lf %lf", &nv.horiz, &nv.vert) == 2) |
135 |
change++; |
136 |
sprintf(buf, "fore and aft clipping plane (%.6g %.6g): ", |
137 |
ourview.vfore, ourview.vaft); |
138 |
(*dev->comout)(buf); |
139 |
(*dev->comin)(buf, NULL); |
140 |
if (buf[0] == CTRL('C')) return; |
141 |
if (sscanf(buf, "%lf %lf", &nv.vfore, &nv.vaft) == 2) |
142 |
change++; |
143 |
sprintf(buf, "view shift and lift (%.6g %.6g): ", |
144 |
ourview.hoff, ourview.voff); |
145 |
(*dev->comout)(buf); |
146 |
(*dev->comin)(buf, NULL); |
147 |
if (buf[0] == CTRL('C')) return; |
148 |
if (sscanf(buf, "%lf %lf", &nv.hoff, &nv.voff) == 2) |
149 |
change++; |
150 |
if (change) |
151 |
newview(&nv); |
152 |
} |
153 |
|
154 |
|
155 |
extern void |
156 |
lastview( /* return to a previous view */ |
157 |
char *s |
158 |
) |
159 |
{ |
160 |
char buf[128]; |
161 |
char *fname; |
162 |
int success; |
163 |
VIEW nv; |
164 |
|
165 |
if (sscanf(s, "%s", buf) == 1) { /* get parameters from a file */ |
166 |
nv = stdview; |
167 |
if ((fname = getpath(buf, "", R_OK)) == NULL || |
168 |
(success = viewfile(fname, &nv, NULL)) == -1) { |
169 |
sprintf(errmsg, "cannot open \"%s\"", buf); |
170 |
error(COMMAND, errmsg); |
171 |
return; |
172 |
} |
173 |
if (!success) |
174 |
error(COMMAND, "wrong file format"); |
175 |
else |
176 |
newview(&nv); |
177 |
return; |
178 |
} |
179 |
if (oldview.type == 0) { /* no old view! */ |
180 |
error(COMMAND, "no previous view"); |
181 |
return; |
182 |
} |
183 |
nv = ourview; |
184 |
ourview = oldview; |
185 |
oldview = nv; |
186 |
newimage(); |
187 |
} |
188 |
|
189 |
|
190 |
extern void |
191 |
saveview( /* save view to rad file */ |
192 |
char *s |
193 |
) |
194 |
{ |
195 |
char view[64]; |
196 |
char *fname; |
197 |
FILE *fp; |
198 |
|
199 |
if (*atos(view, sizeof(view), s)) { |
200 |
if (isint(view)) { |
201 |
error(COMMAND, "cannot write view by number"); |
202 |
return; |
203 |
} |
204 |
s = sskip(s); |
205 |
} |
206 |
while (isspace(*s)) |
207 |
s++; |
208 |
if (*s) |
209 |
atos(rifname, sizeof(rifname), s); |
210 |
else if (rifname[0] == '\0') { |
211 |
error(COMMAND, "no previous rad file"); |
212 |
return; |
213 |
} |
214 |
if ((fname = getpath(rifname, NULL, 0)) == NULL || |
215 |
(fp = fopen(fname, "a")) == NULL) { |
216 |
sprintf(errmsg, "cannot open \"%s\"", rifname); |
217 |
error(COMMAND, errmsg); |
218 |
return; |
219 |
} |
220 |
fputs("view= ", fp); |
221 |
fputs(view, fp); |
222 |
fprintview(&ourview, fp); |
223 |
putc('\n', fp); |
224 |
fclose(fp); |
225 |
} |
226 |
|
227 |
|
228 |
extern void |
229 |
loadview( /* load view from rad file */ |
230 |
char *s |
231 |
) |
232 |
{ |
233 |
char buf[512]; |
234 |
char *fname; |
235 |
FILE *fp; |
236 |
VIEW nv; |
237 |
|
238 |
strcpy(buf, "rad -n -s -V -v "); |
239 |
if (sscanf(s, "%s", buf+strlen(buf)) == 1) |
240 |
s = sskip(s); |
241 |
else |
242 |
strcat(buf, "1"); |
243 |
if (*s) |
244 |
atos(rifname, sizeof(rifname), s); |
245 |
else if (rifname[0] == '\0') { |
246 |
error(COMMAND, "no previous rad file"); |
247 |
return; |
248 |
} |
249 |
if ((fname = getpath(rifname, "", R_OK)) == NULL) { |
250 |
sprintf(errmsg, "cannot access \"%s\"", rifname); |
251 |
error(COMMAND, errmsg); |
252 |
return; |
253 |
} |
254 |
sprintf(buf+strlen(buf), " %s", fname); |
255 |
if ((fp = popen(buf, "r")) == NULL) { |
256 |
error(COMMAND, "cannot run rad"); |
257 |
return; |
258 |
} |
259 |
buf[0] = '\0'; |
260 |
fgets(buf, sizeof(buf), fp); |
261 |
pclose(fp); |
262 |
nv = stdview; |
263 |
if (!sscanview(&nv, buf)) { |
264 |
error(COMMAND, "rad error -- no such view?"); |
265 |
return; |
266 |
} |
267 |
newview(&nv); |
268 |
} |
269 |
|
270 |
|
271 |
extern void |
272 |
getaim( /* aim camera */ |
273 |
char *s |
274 |
) |
275 |
{ |
276 |
VIEW nv = ourview; |
277 |
double zfact; |
278 |
|
279 |
if (getinterest(s, 1, nv.vdir, &zfact) < 0) |
280 |
return; |
281 |
zoomview(&nv, zfact); |
282 |
newview(&nv); |
283 |
} |
284 |
|
285 |
|
286 |
extern void |
287 |
getfocus( /* set focus distance */ |
288 |
char *s |
289 |
) |
290 |
{ |
291 |
FVECT vc; |
292 |
double dist; |
293 |
|
294 |
if (sscanf(s, "%lf", &dist) < 1) { |
295 |
int x, y; |
296 |
RAY thisray; |
297 |
if (dev->getcur == NULL) |
298 |
return; |
299 |
(*dev->comout)("Pick focus point\n"); |
300 |
if ((*dev->getcur)(&x, &y) == ABORT) |
301 |
return; |
302 |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
303 |
&ourview, (x+.5)/hresolu, (y+.5)/vresolu)) < -FTINY) { |
304 |
error(COMMAND, "not on image"); |
305 |
return; |
306 |
} |
307 |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
308 |
if (!localhit(&thisray, &thescene)) { |
309 |
error(COMMAND, "not a local object"); |
310 |
return; |
311 |
} |
312 |
dist = thisray.rot; |
313 |
} else if (dist <= .0) { |
314 |
error(COMMAND, "focus distance must be positive"); |
315 |
return; |
316 |
} |
317 |
ourview.vdist = dist; |
318 |
} |
319 |
|
320 |
|
321 |
extern void |
322 |
getmove( /* move camera */ |
323 |
char *s |
324 |
) |
325 |
{ |
326 |
FVECT vc; |
327 |
double mag; |
328 |
|
329 |
if (getinterest(s, 0, vc, &mag) < 0) |
330 |
return; |
331 |
moveview(0.0, 0.0, mag, vc); |
332 |
} |
333 |
|
334 |
|
335 |
extern void |
336 |
getrotate( /* rotate camera */ |
337 |
char *s |
338 |
) |
339 |
{ |
340 |
VIEW nv = ourview; |
341 |
FVECT v1; |
342 |
double angle, elev, zfact; |
343 |
|
344 |
elev = 0.0; zfact = 1.0; |
345 |
if (sscanf(s, "%lf %lf %lf", &angle, &elev, &zfact) < 1) { |
346 |
error(COMMAND, "missing angle"); |
347 |
return; |
348 |
} |
349 |
spinvector(nv.vdir, ourview.vdir, ourview.vup, angle*(PI/180.)); |
350 |
if (elev != 0.0) { |
351 |
fcross(v1, nv.vdir, ourview.vup); |
352 |
normalize(v1); |
353 |
spinvector(nv.vdir, nv.vdir, v1, elev*(PI/180.)); |
354 |
} |
355 |
zoomview(&nv, zfact); |
356 |
newview(&nv); |
357 |
} |
358 |
|
359 |
|
360 |
extern void |
361 |
getpivot( /* pivot viewpoint */ |
362 |
register char *s |
363 |
) |
364 |
{ |
365 |
FVECT vc; |
366 |
double angle, elev, mag; |
367 |
|
368 |
elev = 0.0; |
369 |
if (sscanf(s, "%lf %lf", &angle, &elev) < 1) { |
370 |
error(COMMAND, "missing angle"); |
371 |
return; |
372 |
} |
373 |
if (getinterest(sskip2(s,2), 0, vc, &mag) < 0) |
374 |
return; |
375 |
moveview(angle, elev, mag, vc); |
376 |
} |
377 |
|
378 |
|
379 |
extern void |
380 |
getexposure( /* get new exposure */ |
381 |
char *s |
382 |
) |
383 |
{ |
384 |
char buf[128]; |
385 |
register char *cp; |
386 |
RECT r; |
387 |
int x, y; |
388 |
register PNODE *p = &ptrunk; |
389 |
int adapt = 0; |
390 |
double e = 1.0; |
391 |
|
392 |
for (cp = s; isspace(*cp); cp++) |
393 |
; |
394 |
if (*cp == '@') { |
395 |
adapt++; |
396 |
while (isspace(*++cp)) |
397 |
; |
398 |
} |
399 |
if (*cp == '\0') { /* normalize to point */ |
400 |
if (dev->getcur == NULL) |
401 |
return; |
402 |
(*dev->comout)("Pick point for exposure\n"); |
403 |
if ((*dev->getcur)(&x, &y) == ABORT) |
404 |
return; |
405 |
r.l = r.d = 0; |
406 |
r.r = hresolu; r.u = vresolu; |
407 |
p = findrect(x, y, &ptrunk, &r, -1); |
408 |
} else { |
409 |
if (*cp == '=') { /* absolute setting */ |
410 |
p = NULL; |
411 |
e = 1.0/exposure; |
412 |
for (cp++; isspace(*cp); cp++) |
413 |
; |
414 |
if (*cp == '\0') { /* interactive */ |
415 |
sprintf(buf, "exposure (%f): ", exposure); |
416 |
(*dev->comout)(buf); |
417 |
(*dev->comin)(buf, NULL); |
418 |
for (cp = buf; isspace(*cp); cp++) |
419 |
; |
420 |
if (*cp == '\0') |
421 |
return; |
422 |
} |
423 |
} |
424 |
if (*cp == '+' || *cp == '-') /* f-stops */ |
425 |
e *= pow(2.0, atof(cp)); |
426 |
else /* multiplier */ |
427 |
e *= atof(cp); |
428 |
} |
429 |
if (p != NULL) { /* relative setting */ |
430 |
if (bright(p->v) < 1e-15) { |
431 |
error(COMMAND, "cannot normalize to zero"); |
432 |
return; |
433 |
} |
434 |
if (adapt) |
435 |
e *= 106./pow(1.219+pow(luminance(p->v)/exposure,.4),2.5)/exposure; |
436 |
else |
437 |
e *= 0.5 / bright(p->v); |
438 |
} |
439 |
if (e <= FTINY || fabs(1.0 - e) <= FTINY) |
440 |
return; |
441 |
scalepict(&ptrunk, e); |
442 |
exposure *= e; |
443 |
redraw(); |
444 |
} |
445 |
|
446 |
typedef union {int i; double d; COLOR C;} *MyUptr; |
447 |
|
448 |
extern int |
449 |
getparam( /* get variable from user */ |
450 |
char *str, |
451 |
char *dsc, |
452 |
int typ, |
453 |
void *p |
454 |
) |
455 |
{ |
456 |
register MyUptr ptr = (MyUptr)p; |
457 |
int i0; |
458 |
double d0, d1, d2; |
459 |
char buf[48]; |
460 |
|
461 |
switch (typ) { |
462 |
case 'i': /* integer */ |
463 |
if (sscanf(str, "%d", &i0) != 1) { |
464 |
(*dev->comout)(dsc); |
465 |
sprintf(buf, " (%d): ", ptr->i); |
466 |
(*dev->comout)(buf); |
467 |
(*dev->comin)(buf, NULL); |
468 |
if (sscanf(buf, "%d", &i0) != 1) |
469 |
return(0); |
470 |
} |
471 |
ptr->i = i0; |
472 |
return(1); |
473 |
case 'r': /* real */ |
474 |
if (sscanf(str, "%lf", &d0) != 1) { |
475 |
(*dev->comout)(dsc); |
476 |
sprintf(buf, " (%.6g): ", ptr->d); |
477 |
(*dev->comout)(buf); |
478 |
(*dev->comin)(buf, NULL); |
479 |
if (sscanf(buf, "%lf", &d0) != 1) |
480 |
return(0); |
481 |
} |
482 |
ptr->d = d0; |
483 |
return(1); |
484 |
case 'b': /* boolean */ |
485 |
if (sscanf(str, "%1s", buf) != 1) { |
486 |
(*dev->comout)(dsc); |
487 |
sprintf(buf, "? (%c): ", ptr->i ? 'y' : 'n'); |
488 |
(*dev->comout)(buf); |
489 |
(*dev->comin)(buf, NULL); |
490 |
if (buf[0] == '\0' || |
491 |
strchr("yY+1tTnN-0fF", buf[0]) == NULL) |
492 |
return(0); |
493 |
} |
494 |
ptr->i = strchr("yY+1tT", buf[0]) != NULL; |
495 |
return(1); |
496 |
case 'C': /* color */ |
497 |
if (sscanf(str, "%lf %lf %lf", &d0, &d1, &d2) != 3) { |
498 |
(*dev->comout)(dsc); |
499 |
sprintf(buf, " (%.6g %.6g %.6g): ", |
500 |
colval(ptr->C,RED), |
501 |
colval(ptr->C,GRN), |
502 |
colval(ptr->C,BLU)); |
503 |
(*dev->comout)(buf); |
504 |
(*dev->comin)(buf, NULL); |
505 |
if (sscanf(buf, "%lf %lf %lf", &d0, &d1, &d2) != 3) |
506 |
return(0); |
507 |
} |
508 |
setcolor(ptr->C, d0, d1, d2); |
509 |
return(1); |
510 |
} |
511 |
return 0; /* nothing matched */ |
512 |
} |
513 |
|
514 |
|
515 |
extern void |
516 |
setparam( /* get/set program parameter */ |
517 |
register char *s |
518 |
) |
519 |
{ |
520 |
char buf[128]; |
521 |
|
522 |
if (s[0] == '\0') { |
523 |
(*dev->comout)( |
524 |
"aa ab ad ar as av aw b dc dv dj ds dt i lr lw me ma mg ms ps pt sj st bv: "); |
525 |
(*dev->comin)(buf, NULL); |
526 |
s = buf; |
527 |
} |
528 |
switch (s[0]) { |
529 |
case 'l': /* limit */ |
530 |
switch (s[1]) { |
531 |
case 'w': /* weight */ |
532 |
getparam(s+2, "limit weight", 'r', |
533 |
(void *)&minweight); |
534 |
break; |
535 |
case 'r': /* reflection */ |
536 |
getparam(s+2, "limit reflection", 'i', |
537 |
(void *)&maxdepth); |
538 |
break; |
539 |
default: |
540 |
goto badparam; |
541 |
} |
542 |
break; |
543 |
case 'd': /* direct */ |
544 |
switch (s[1]) { |
545 |
case 'j': /* jitter */ |
546 |
getparam(s+2, "direct jitter", 'r', |
547 |
(void *)&dstrsrc); |
548 |
break; |
549 |
case 'c': /* certainty */ |
550 |
getparam(s+2, "direct certainty", 'r', |
551 |
(void *)&shadcert); |
552 |
break; |
553 |
case 't': /* threshold */ |
554 |
getparam(s+2, "direct threshold", 'r', |
555 |
(void *)&shadthresh); |
556 |
break; |
557 |
case 'v': /* visibility */ |
558 |
getparam(s+2, "direct visibility", 'b', |
559 |
(void *)&directvis); |
560 |
break; |
561 |
case 's': /* sampling */ |
562 |
getparam(s+2, "direct sampling", 'r', |
563 |
(void *)&srcsizerat); |
564 |
break; |
565 |
default: |
566 |
goto badparam; |
567 |
} |
568 |
break; |
569 |
case 'b': /* back faces or black and white */ |
570 |
switch (s[1]) { |
571 |
case 'v': /* back face visibility */ |
572 |
getparam(s+2, "back face visibility", 'b', |
573 |
(void *)&backvis); |
574 |
break; |
575 |
case '\0': /* black and white */ |
576 |
case ' ': |
577 |
case 'y': case 'Y': case 't': case 'T': case '1': case '+': |
578 |
case 'n': case 'N': case 'f': case 'F': case '0': case '-': |
579 |
getparam(s+1, "black and white", 'b', |
580 |
(void *)&greyscale); |
581 |
break; |
582 |
default: |
583 |
goto badparam; |
584 |
} |
585 |
break; |
586 |
case 'i': /* irradiance */ |
587 |
getparam(s+1, "irradiance", 'b', |
588 |
(void *)&do_irrad); |
589 |
break; |
590 |
case 'a': /* ambient */ |
591 |
switch (s[1]) { |
592 |
case 'v': /* value */ |
593 |
getparam(s+2, "ambient value", 'C', |
594 |
(void *)ambval); |
595 |
break; |
596 |
case 'w': /* weight */ |
597 |
getparam(s+2, "ambient value weight", 'i', |
598 |
(void *)&ambvwt); |
599 |
break; |
600 |
case 'a': /* accuracy */ |
601 |
if (getparam(s+2, "ambient accuracy", 'r', |
602 |
(void *)&ambacc)) |
603 |
setambacc(ambacc); |
604 |
break; |
605 |
case 'd': /* divisions */ |
606 |
getparam(s+2, "ambient divisions", 'i', |
607 |
(void *)&ambdiv); |
608 |
break; |
609 |
case 's': /* samples */ |
610 |
getparam(s+2, "ambient super-samples", 'i', |
611 |
(void *)&ambssamp); |
612 |
break; |
613 |
case 'b': /* bounces */ |
614 |
getparam(s+2, "ambient bounces", 'i', |
615 |
(void *)&ambounce); |
616 |
break; |
617 |
case 'r': |
618 |
if (getparam(s+2, "ambient resolution", 'i', |
619 |
(void *)&ambres)) |
620 |
setambres(ambres); |
621 |
break; |
622 |
default: |
623 |
goto badparam; |
624 |
} |
625 |
break; |
626 |
case 'm': /* medium */ |
627 |
switch (s[1]) { |
628 |
case 'e': /* extinction coefficient */ |
629 |
getparam(s+2, "extinction coefficient", 'C', |
630 |
(void *)cextinction); |
631 |
break; |
632 |
case 'a': /* scattering albedo */ |
633 |
getparam(s+2, "scattering albedo", 'C', |
634 |
(void *)salbedo); |
635 |
break; |
636 |
case 'g': /* scattering eccentricity */ |
637 |
getparam(s+2, "scattering eccentricity", 'r', |
638 |
(void *)&seccg); |
639 |
break; |
640 |
case 's': /* sampling distance */ |
641 |
getparam(s+2, "mist sampling distance", 'r', |
642 |
(void *)&ssampdist); |
643 |
break; |
644 |
default: |
645 |
goto badparam; |
646 |
} |
647 |
break; |
648 |
case 'p': /* pixel */ |
649 |
switch (s[1]) { |
650 |
case 's': /* sample */ |
651 |
if (getparam(s+2, "pixel sample", 'i', |
652 |
(void *)&psample)) |
653 |
pdepth = 0; |
654 |
break; |
655 |
case 't': /* threshold */ |
656 |
if (getparam(s+2, "pixel threshold", 'r', |
657 |
(void *)&maxdiff)) |
658 |
pdepth = 0; |
659 |
break; |
660 |
default: |
661 |
goto badparam; |
662 |
} |
663 |
break; |
664 |
case 's': /* specular */ |
665 |
switch (s[1]) { |
666 |
case 'j': /* jitter */ |
667 |
getparam(s+2, "specular jitter", 'r', |
668 |
(void *)&specjitter); |
669 |
break; |
670 |
case 't': /* threshold */ |
671 |
getparam(s+2, "specular threshold", 'r', |
672 |
(void *)&specthresh); |
673 |
break; |
674 |
default: |
675 |
goto badparam; |
676 |
} |
677 |
break; |
678 |
case '\0': /* nothing */ |
679 |
break; |
680 |
default:; |
681 |
badparam: |
682 |
*sskip(s) = '\0'; |
683 |
sprintf(errmsg, "%s: unknown variable", s); |
684 |
error(COMMAND, errmsg); |
685 |
break; |
686 |
} |
687 |
} |
688 |
|
689 |
|
690 |
extern void |
691 |
traceray(s) /* trace a single ray */ |
692 |
char *s; |
693 |
{ |
694 |
char buf[128]; |
695 |
int x, y; |
696 |
OBJREC *ino; |
697 |
RAY thisray; |
698 |
|
699 |
thisray.rmax = 0.0; |
700 |
|
701 |
if (!sscanvec(s, thisray.rorg) || |
702 |
!sscanvec(sskip2(s,3), thisray.rdir)) { |
703 |
|
704 |
if (dev->getcur == NULL) |
705 |
return; |
706 |
(*dev->comout)("Pick ray\n"); |
707 |
if ((*dev->getcur)(&x, &y) == ABORT) |
708 |
return; |
709 |
|
710 |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
711 |
&ourview, (x+.5)/hresolu, (y+.5)/vresolu)) < -FTINY) { |
712 |
error(COMMAND, "not on image"); |
713 |
return; |
714 |
} |
715 |
|
716 |
} else if (normalize(thisray.rdir) == 0.0) { |
717 |
error(COMMAND, "zero ray direction"); |
718 |
return; |
719 |
} |
720 |
|
721 |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
722 |
|
723 |
rayvalue(&thisray); |
724 |
|
725 |
if (thisray.ro == NULL) |
726 |
(*dev->comout)("ray hit nothing"); |
727 |
else { |
728 |
sprintf(buf, "ray hit %s%s %s \"%s\"", |
729 |
thisray.rod < 0.0 ? "back of " : "", |
730 |
thisray.ro->omod == OVOID ? VOIDID : |
731 |
objptr(thisray.ro->omod)->oname, |
732 |
ofun[thisray.ro->otype].funame, |
733 |
thisray.ro->oname); |
734 |
if ((ino = objptr(thisray.robj)) != thisray.ro) |
735 |
sprintf(buf+strlen(buf), " in %s \"%s\"", |
736 |
ofun[ino->otype].funame, ino->oname); |
737 |
(*dev->comout)(buf); |
738 |
(*dev->comin)(buf, NULL); |
739 |
if (thisray.rot >= FHUGE) |
740 |
(*dev->comout)("at infinity"); |
741 |
else { |
742 |
sprintf(buf, "at (%.6g %.6g %.6g) (%.6g)", |
743 |
thisray.rop[0], thisray.rop[1], |
744 |
thisray.rop[2], thisray.rt); |
745 |
(*dev->comout)(buf); |
746 |
} |
747 |
(*dev->comin)(buf, NULL); |
748 |
sprintf(buf, "value (%.5g %.5g %.5g) (%.3gL)", |
749 |
colval(thisray.rcol,RED), |
750 |
colval(thisray.rcol,GRN), |
751 |
colval(thisray.rcol,BLU), |
752 |
luminance(thisray.rcol)); |
753 |
(*dev->comout)(buf); |
754 |
} |
755 |
(*dev->comin)(buf, NULL); |
756 |
} |
757 |
|
758 |
|
759 |
extern void |
760 |
writepict(s) /* write the picture to a file */ |
761 |
char *s; |
762 |
{ |
763 |
static char buf[128]; |
764 |
char *fname; |
765 |
FILE *fp; |
766 |
COLR *scanline; |
767 |
int y; |
768 |
|
769 |
while (isspace(*s)) |
770 |
s++; |
771 |
if (*s) |
772 |
atos(buf, sizeof(buf), s); |
773 |
else if (buf[0] == '\0') { |
774 |
error(COMMAND, "no file"); |
775 |
return; |
776 |
} |
777 |
if ((fname = getpath(buf, NULL, 0)) == NULL || |
778 |
(fp = fopen(fname, "w")) == NULL) { |
779 |
sprintf(errmsg, "cannot open \"%s\"", buf); |
780 |
error(COMMAND, errmsg); |
781 |
return; |
782 |
} |
783 |
SET_FILE_BINARY(fp); |
784 |
(*dev->comout)("writing \""); |
785 |
(*dev->comout)(fname); |
786 |
(*dev->comout)("\"...\n"); |
787 |
/* write header */ |
788 |
newheader("RADIANCE", fp); |
789 |
fputs(progname, fp); |
790 |
fprintview(&ourview, fp); |
791 |
if (octname != NULL) |
792 |
fprintf(fp, " %s\n", octname); |
793 |
else |
794 |
putc('\n', fp); |
795 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
796 |
fputnow(fp); |
797 |
if (exposure != 1.0) |
798 |
fputexpos(exposure, fp); |
799 |
if (dev->pixaspect != 1.0) |
800 |
fputaspect(dev->pixaspect, fp); |
801 |
fputformat(COLRFMT, fp); |
802 |
putc('\n', fp); |
803 |
fprtresolu(hresolu, vresolu, fp); |
804 |
|
805 |
scanline = (COLR *)malloc(hresolu*sizeof(COLR)); |
806 |
if (scanline == NULL) { |
807 |
error(COMMAND, "not enough memory!"); |
808 |
fclose(fp); |
809 |
unlink(fname); |
810 |
return; |
811 |
} |
812 |
for (y = vresolu-1; y >= 0; y--) { |
813 |
getpictcolrs(y, scanline, &ptrunk, hresolu, vresolu); |
814 |
if (fwritecolrs(scanline, hresolu, fp) < 0) |
815 |
break; |
816 |
} |
817 |
free((void *)scanline); |
818 |
if (fclose(fp) < 0) |
819 |
error(COMMAND, "write error"); |
820 |
} |