1 |
/* Copyright (c) 1993 Regents of the University of California */ |
2 |
|
3 |
#ifndef lint |
4 |
static char SCCSid[] = "$SunId$ LBL"; |
5 |
#endif |
6 |
|
7 |
/* |
8 |
* rv2.c - command routines used in tracing a view. |
9 |
* |
10 |
* 3/24/87 |
11 |
*/ |
12 |
|
13 |
#include "ray.h" |
14 |
|
15 |
#include "octree.h" |
16 |
|
17 |
#include "otypes.h" |
18 |
|
19 |
#include "rpaint.h" |
20 |
|
21 |
#include "resolu.h" |
22 |
|
23 |
#include <ctype.h> |
24 |
|
25 |
#define CTRL(c) ((c)-'@') |
26 |
|
27 |
#ifdef SMLFLT |
28 |
#define sscanvec(s,v) (sscanf(s,"%f %f %f",v,v+1,v+2)==3) |
29 |
#else |
30 |
#define sscanvec(s,v) (sscanf(s,"%lf %lf %lf",v,v+1,v+2)==3) |
31 |
#endif |
32 |
|
33 |
extern char *atos(); |
34 |
|
35 |
extern char rifname[]; /* rad input file name */ |
36 |
|
37 |
extern char VersionID[]; |
38 |
extern char *progname; |
39 |
extern char *octname; |
40 |
|
41 |
|
42 |
getframe(s) /* get a new frame */ |
43 |
char *s; |
44 |
{ |
45 |
if (getrect(s, &pframe) < 0) |
46 |
return; |
47 |
pdepth = 0; |
48 |
} |
49 |
|
50 |
|
51 |
getrepaint(s) /* get area and repaint */ |
52 |
char *s; |
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 |
getview(s) /* get/show view parameters */ |
63 |
char *s; |
64 |
{ |
65 |
FILE *fp; |
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char buf[128]; |
67 |
char *fname; |
68 |
int change = 0; |
69 |
VIEW nv; |
70 |
|
71 |
while (isspace(*s)) |
72 |
s++; |
73 |
if (*s == '-') { /* command line parameters */ |
74 |
copystruct(&nv, &ourview); |
75 |
if (sscanview(&nv, s)) |
76 |
newview(&nv); |
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else |
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error(COMMAND, "bad view option(s)"); |
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return; |
80 |
} |
81 |
if (sscanf(s, "%s", buf) == 1) { /* write parameters to a file */ |
82 |
if ((fname = getpath(buf, NULL, 0)) == NULL || |
83 |
(fp = fopen(fname, "a")) == NULL) { |
84 |
sprintf(errmsg, "cannot open \"%s\"", buf); |
85 |
error(COMMAND, errmsg); |
86 |
return; |
87 |
} |
88 |
fputs(progname, fp); |
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fprintview(&ourview, fp); |
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fputs(sskip(s), fp); |
91 |
putc('\n', fp); |
92 |
fclose(fp); |
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return; |
94 |
} |
95 |
sprintf(buf, "view type (%c): ", ourview.type); |
96 |
(*dev->comout)(buf); |
97 |
(*dev->comin)(buf, NULL); |
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if (buf[0] == CTRL('C')) return; |
99 |
if (buf[0] && buf[0] != ourview.type) { |
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nv.type = buf[0]; |
101 |
change++; |
102 |
} else |
103 |
nv.type = ourview.type; |
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 |
else |
112 |
VCOPY(nv.vp, ourview.vp); |
113 |
sprintf(buf, "view direction (%.6g %.6g %.6g): ", |
114 |
ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]); |
115 |
(*dev->comout)(buf); |
116 |
(*dev->comin)(buf, NULL); |
117 |
if (buf[0] == CTRL('C')) return; |
118 |
if (sscanvec(buf, nv.vdir)) |
119 |
change++; |
120 |
else |
121 |
VCOPY(nv.vdir, ourview.vdir); |
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 |
else |
130 |
VCOPY(nv.vup, ourview.vup); |
131 |
sprintf(buf, "view horiz and vert size (%.6g %.6g): ", |
132 |
ourview.horiz, ourview.vert); |
133 |
(*dev->comout)(buf); |
134 |
(*dev->comin)(buf, NULL); |
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if (buf[0] == CTRL('C')) return; |
136 |
if (sscanf(buf, "%lf %lf", &nv.horiz, &nv.vert) == 2) |
137 |
change++; |
138 |
else { |
139 |
nv.horiz = ourview.horiz; nv.vert = ourview.vert; |
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} |
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sprintf(buf, "view shift and lift (%.6g %.6g): ", |
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ourview.hoff, ourview.voff); |
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(*dev->comout)(buf); |
144 |
(*dev->comin)(buf, NULL); |
145 |
if (buf[0] == CTRL('C')) return; |
146 |
if (sscanf(buf, "%lf %lf", &nv.hoff, &nv.voff) == 2) |
147 |
change++; |
148 |
else { |
149 |
nv.hoff = ourview.hoff; nv.voff = ourview.voff; |
150 |
} |
151 |
if (change) |
152 |
newview(&nv); |
153 |
} |
154 |
|
155 |
|
156 |
lastview(s) /* return to a previous view */ |
157 |
char *s; |
158 |
{ |
159 |
char buf[128]; |
160 |
char *fname; |
161 |
int success; |
162 |
VIEW nv; |
163 |
|
164 |
if (sscanf(s, "%s", buf) == 1) { /* get parameters from a file */ |
165 |
copystruct(&nv, &stdview); |
166 |
if ((fname = getpath(buf, NULL, 0)) == NULL || |
167 |
(success = viewfile(fname, &nv, NULL)) == -1) { |
168 |
sprintf(errmsg, "cannot open \"%s\"", buf); |
169 |
error(COMMAND, errmsg); |
170 |
return; |
171 |
} |
172 |
if (!success) |
173 |
error(COMMAND, "wrong file format"); |
174 |
else |
175 |
newview(&nv); |
176 |
return; |
177 |
} |
178 |
if (oldview.type == 0) { /* no old view! */ |
179 |
error(COMMAND, "no previous view"); |
180 |
return; |
181 |
} |
182 |
copystruct(&nv, &ourview); |
183 |
copystruct(&ourview, &oldview); |
184 |
copystruct(&oldview, &nv); |
185 |
newimage(); |
186 |
} |
187 |
|
188 |
|
189 |
saveview(s) /* save view to rad file */ |
190 |
char *s; |
191 |
{ |
192 |
char view[64]; |
193 |
char *fname; |
194 |
FILE *fp; |
195 |
|
196 |
if (*atos(view, sizeof(view), s)) |
197 |
s = sskip(s); |
198 |
if (sscanf(s, "%s", rifname) != 1 && rifname[0] == '\0') { |
199 |
error(COMMAND, "no previous rad file"); |
200 |
return; |
201 |
} |
202 |
if ((fname = getpath(rifname, NULL, 0)) == NULL || |
203 |
(fp = fopen(fname, "a")) == NULL) { |
204 |
sprintf(errmsg, "cannot open \"%s\"", rifname); |
205 |
error(COMMAND, errmsg); |
206 |
return; |
207 |
} |
208 |
fputs("view= ", fp); |
209 |
fputs(view, fp); |
210 |
fprintview(&ourview, fp); |
211 |
putc('\n', fp); |
212 |
fclose(fp); |
213 |
} |
214 |
|
215 |
|
216 |
loadview(s) /* load view from rad file */ |
217 |
char *s; |
218 |
{ |
219 |
char buf[512]; |
220 |
char *fname; |
221 |
FILE *fp; |
222 |
VIEW nv; |
223 |
|
224 |
strcpy(buf, "rad -n -s -V -v "); |
225 |
if (sscanf(s, "%s", buf+strlen(buf)) == 1) |
226 |
s = sskip(s); |
227 |
else |
228 |
strcat(buf, "1"); |
229 |
if (sscanf(s, "%s", rifname) != 1 && rifname[0] == '\0') { |
230 |
error(COMMAND, "no previous rad file"); |
231 |
return; |
232 |
} |
233 |
fname = getpath(rifname, NULL, 0); |
234 |
if (fname == NULL || access(fname, R_OK) == -1) { |
235 |
sprintf(errmsg, "cannot access \"%s\"", rifname); |
236 |
error(COMMAND, errmsg); |
237 |
return; |
238 |
} |
239 |
sprintf(buf+strlen(buf), " %s", fname); |
240 |
if ((fp = popen(buf, "r")) == NULL) { |
241 |
error(COMMAND, "cannot run rad"); |
242 |
return; |
243 |
} |
244 |
buf[0] = '\0'; |
245 |
fgets(buf, sizeof(buf), fp); |
246 |
pclose(fp); |
247 |
copystruct(&nv, &stdview); |
248 |
if (!sscanview(&nv, buf)) { |
249 |
error(COMMAND, "rad error -- no such view?"); |
250 |
return; |
251 |
} |
252 |
newview(&nv); |
253 |
} |
254 |
|
255 |
|
256 |
getaim(s) /* aim camera */ |
257 |
char *s; |
258 |
{ |
259 |
double zfact; |
260 |
VIEW nv; |
261 |
|
262 |
if (getinterest(s, 1, nv.vdir, &zfact) < 0) |
263 |
return; |
264 |
nv.type = ourview.type; |
265 |
VCOPY(nv.vp, ourview.vp); |
266 |
VCOPY(nv.vup, ourview.vup); |
267 |
nv.hoff = ourview.hoff; nv.voff = ourview.voff; |
268 |
nv.horiz = ourview.horiz; nv.vert = ourview.vert; |
269 |
zoomview(&nv, zfact); |
270 |
newview(&nv); |
271 |
} |
272 |
|
273 |
|
274 |
getmove(s) /* move camera */ |
275 |
char *s; |
276 |
{ |
277 |
FVECT vc; |
278 |
double mag; |
279 |
|
280 |
if (getinterest(s, 0, vc, &mag) < 0) |
281 |
return; |
282 |
moveview(0.0, 0.0, mag, vc); |
283 |
} |
284 |
|
285 |
|
286 |
getrotate(s) /* rotate camera */ |
287 |
char *s; |
288 |
{ |
289 |
VIEW nv; |
290 |
FVECT v1; |
291 |
double angle, elev, zfact; |
292 |
|
293 |
elev = 0.0; zfact = 1.0; |
294 |
if (sscanf(s, "%lf %lf %lf", &angle, &elev, &zfact) < 1) { |
295 |
error(COMMAND, "missing angle"); |
296 |
return; |
297 |
} |
298 |
nv.type = ourview.type; |
299 |
VCOPY(nv.vp, ourview.vp); |
300 |
VCOPY(nv.vup, ourview.vup); |
301 |
nv.hoff = ourview.hoff; nv.voff = ourview.voff; |
302 |
spinvector(nv.vdir, ourview.vdir, ourview.vup, angle*(PI/180.)); |
303 |
if (elev != 0.0) { |
304 |
fcross(v1, nv.vdir, ourview.vup); |
305 |
normalize(v1); |
306 |
spinvector(nv.vdir, nv.vdir, v1, elev*(PI/180.)); |
307 |
} |
308 |
nv.horiz = ourview.horiz; nv.vert = ourview.vert; |
309 |
zoomview(&nv, zfact); |
310 |
newview(&nv); |
311 |
} |
312 |
|
313 |
|
314 |
getpivot(s) /* pivot viewpoint */ |
315 |
register char *s; |
316 |
{ |
317 |
FVECT vc; |
318 |
double angle, elev, mag; |
319 |
|
320 |
elev = 0.0; |
321 |
if (sscanf(s, "%lf %lf", &angle, &elev) < 1) { |
322 |
error(COMMAND, "missing angle"); |
323 |
return; |
324 |
} |
325 |
if (getinterest(sskip(sskip(s)), 0, vc, &mag) < 0) |
326 |
return; |
327 |
moveview(angle, elev, mag, vc); |
328 |
} |
329 |
|
330 |
|
331 |
getexposure(s) /* get new exposure */ |
332 |
char *s; |
333 |
{ |
334 |
char buf[128]; |
335 |
register char *cp; |
336 |
RECT r; |
337 |
int x, y; |
338 |
register PNODE *p = &ptrunk; |
339 |
int adapt = 0; |
340 |
double e = 1.0; |
341 |
start: |
342 |
for (cp = s; isspace(*cp); cp++) |
343 |
; |
344 |
if (*cp == '@') { |
345 |
adapt++; |
346 |
goto start; |
347 |
} |
348 |
if (*cp == '\0') { /* normalize to point */ |
349 |
if (dev->getcur == NULL) |
350 |
return; |
351 |
(*dev->comout)("Pick point for exposure\n"); |
352 |
if ((*dev->getcur)(&x, &y) == ABORT) |
353 |
return; |
354 |
r.l = r.d = 0; |
355 |
r.r = hresolu; r.u = vresolu; |
356 |
p = findrect(x, y, &ptrunk, &r, -1); |
357 |
} else { |
358 |
if (*cp == '=') { /* absolute setting */ |
359 |
p = NULL; |
360 |
e = 1.0/exposure; |
361 |
for (cp++; isspace(*cp); cp++) |
362 |
; |
363 |
if (*cp == '\0') { /* interactive */ |
364 |
sprintf(buf, "exposure (%f): ", exposure); |
365 |
(*dev->comout)(buf); |
366 |
(*dev->comin)(buf, NULL); |
367 |
for (cp = buf; isspace(*cp); cp++) |
368 |
; |
369 |
if (*cp == '\0') |
370 |
return; |
371 |
} |
372 |
} |
373 |
if (*cp == '+' || *cp == '-') /* f-stops */ |
374 |
e *= pow(2.0, atof(cp)); |
375 |
else /* multiplier */ |
376 |
e *= atof(cp); |
377 |
} |
378 |
if (p != NULL) { /* relative setting */ |
379 |
if (bright(p->v) < 1e-15) { |
380 |
error(COMMAND, "cannot normalize to zero"); |
381 |
return; |
382 |
} |
383 |
if (adapt) |
384 |
e *= 106./pow(1.219+pow(luminance(p->v)/exposure,.4),2.5)/exposure; |
385 |
else |
386 |
e *= 0.5 / bright(p->v); |
387 |
} |
388 |
if (e <= FTINY || fabs(1.0 - e) <= FTINY) |
389 |
return; |
390 |
scalepict(&ptrunk, e); |
391 |
exposure *= e; |
392 |
redraw(); |
393 |
} |
394 |
|
395 |
|
396 |
getparam(str, dsc, typ, ptr) /* get variable from user */ |
397 |
char *str, *dsc; |
398 |
int typ; |
399 |
register union {int i; double d; COLOR C;} *ptr; |
400 |
{ |
401 |
extern char *index(); |
402 |
int i0; |
403 |
double d0, d1, d2; |
404 |
char buf[48]; |
405 |
|
406 |
switch (typ) { |
407 |
case 'i': /* integer */ |
408 |
if (sscanf(str, "%d", &i0) != 1) { |
409 |
(*dev->comout)(dsc); |
410 |
sprintf(buf, " (%d): ", ptr->i); |
411 |
(*dev->comout)(buf); |
412 |
(*dev->comin)(buf, NULL); |
413 |
if (sscanf(buf, "%d", &i0) != 1) |
414 |
return(0); |
415 |
} |
416 |
ptr->i = i0; |
417 |
return(1); |
418 |
case 'r': /* real */ |
419 |
if (sscanf(str, "%lf", &d0) != 1) { |
420 |
(*dev->comout)(dsc); |
421 |
sprintf(buf, " (%.6g): ", ptr->d); |
422 |
(*dev->comout)(buf); |
423 |
(*dev->comin)(buf, NULL); |
424 |
if (sscanf(buf, "%lf", &d0) != 1) |
425 |
return(0); |
426 |
} |
427 |
ptr->d = d0; |
428 |
return(1); |
429 |
case 'b': /* boolean */ |
430 |
if (sscanf(str, "%1s", buf) != 1) { |
431 |
(*dev->comout)(dsc); |
432 |
sprintf(buf, "? (%c): ", ptr->i ? 'y' : 'n'); |
433 |
(*dev->comout)(buf); |
434 |
(*dev->comin)(buf, NULL); |
435 |
if (buf[0] == '\0' || |
436 |
index("yY+1tTnN-0fF", buf[0]) == NULL) |
437 |
return(0); |
438 |
} |
439 |
ptr->i = index("yY+1tT", buf[0]) != NULL; |
440 |
return(1); |
441 |
case 'C': /* color */ |
442 |
if (sscanf(str, "%lf %lf %lf", &d0, &d1, &d2) != 3) { |
443 |
(*dev->comout)(dsc); |
444 |
sprintf(buf, " (%.6g %.6g %.6g): ", |
445 |
colval(ptr->C,RED), |
446 |
colval(ptr->C,GRN), |
447 |
colval(ptr->C,BLU)); |
448 |
(*dev->comout)(buf); |
449 |
(*dev->comin)(buf, NULL); |
450 |
if (sscanf(buf, "%lf %lf %lf", &d0, &d1, &d2) != 3) |
451 |
return(0); |
452 |
} |
453 |
setcolor(ptr->C, d0, d1, d2); |
454 |
return(1); |
455 |
} |
456 |
} |
457 |
|
458 |
|
459 |
setparam(s) /* get/set program parameter */ |
460 |
register char *s; |
461 |
{ |
462 |
extern int psample; |
463 |
extern double maxdiff; |
464 |
extern double minweight; |
465 |
extern int maxdepth; |
466 |
extern double dstrsrc; |
467 |
extern double shadthresh; |
468 |
extern double shadcert; |
469 |
extern COLOR ambval; |
470 |
extern double ambacc; |
471 |
extern int ambres; |
472 |
extern int ambdiv; |
473 |
extern int ambssamp; |
474 |
extern int ambounce; |
475 |
extern int directvis; |
476 |
extern double srcsizerat; |
477 |
extern int do_irrad; |
478 |
extern double specjitter; |
479 |
extern double specthresh; |
480 |
char buf[128]; |
481 |
|
482 |
if (s[0] == '\0') { |
483 |
(*dev->comout)( |
484 |
"aa ab ad ar as av b dc di dj ds dt i lr lw ps pt sj st: "); |
485 |
(*dev->comin)(buf, NULL); |
486 |
s = buf; |
487 |
} |
488 |
switch (s[0]) { |
489 |
case 'l': /* limit */ |
490 |
switch (s[1]) { |
491 |
case 'w': /* weight */ |
492 |
getparam(s+2, "limit weight", 'r', &minweight); |
493 |
break; |
494 |
case 'r': /* reflection */ |
495 |
getparam(s+2, "limit reflection", 'i', &maxdepth); |
496 |
break; |
497 |
default: |
498 |
goto badparam; |
499 |
} |
500 |
break; |
501 |
case 'd': /* direct */ |
502 |
switch (s[1]) { |
503 |
case 'j': /* jitter */ |
504 |
getparam(s+2, "direct jitter", 'r', &dstrsrc); |
505 |
break; |
506 |
case 'c': /* certainty */ |
507 |
getparam(s+2, "direct certainty", 'r', &shadcert); |
508 |
break; |
509 |
case 't': /* threshold */ |
510 |
getparam(s+2, "direct threshold", 'r', &shadthresh); |
511 |
break; |
512 |
case 'v': /* visibility */ |
513 |
getparam(s+2, "direct visibility", |
514 |
'b', &directvis); |
515 |
break; |
516 |
case 's': /* sampling */ |
517 |
getparam(s+2, "direct sampling", 'r', &srcsizerat); |
518 |
break; |
519 |
default: |
520 |
goto badparam; |
521 |
} |
522 |
break; |
523 |
case 'b': /* black and white */ |
524 |
getparam(s+1, "black and white", 'b', &greyscale); |
525 |
break; |
526 |
case 'i': /* irradiance */ |
527 |
getparam(s+1, "irradiance", 'b', &do_irrad); |
528 |
break; |
529 |
case 'a': /* ambient */ |
530 |
switch (s[1]) { |
531 |
case 'v': /* value */ |
532 |
getparam(s+2, "ambient value", 'C', (COLOR *)ambval); |
533 |
break; |
534 |
case 'a': /* accuracy */ |
535 |
if (getparam(s+2, "ambient accuracy", 'r', &ambacc)) |
536 |
setambacc(ambacc); |
537 |
break; |
538 |
case 'd': /* divisions */ |
539 |
getparam(s+2, "ambient divisions", 'i', &ambdiv); |
540 |
break; |
541 |
case 's': /* samples */ |
542 |
getparam(s+2, "ambient super-samples", 'i', &ambssamp); |
543 |
break; |
544 |
case 'b': /* bounces */ |
545 |
getparam(s+2, "ambient bounces", 'i', &ambounce); |
546 |
break; |
547 |
case 'r': |
548 |
if (getparam(s+2, "ambient resolution", 'i', &ambres)) |
549 |
setambres(ambres); |
550 |
break; |
551 |
default: |
552 |
goto badparam; |
553 |
} |
554 |
break; |
555 |
case 'p': /* pixel */ |
556 |
switch (s[1]) { |
557 |
case 's': /* sample */ |
558 |
if (getparam(s+2, "pixel sample", 'i', &psample)) |
559 |
pdepth = 0; |
560 |
break; |
561 |
case 't': /* threshold */ |
562 |
if (getparam(s+2, "pixel threshold", 'r', &maxdiff)) |
563 |
pdepth = 0; |
564 |
break; |
565 |
default: |
566 |
goto badparam; |
567 |
} |
568 |
break; |
569 |
case 's': /* specular */ |
570 |
switch (s[1]) { |
571 |
case 'j': /* jitter */ |
572 |
getparam(s+2, "specular jitter", 'r', &specjitter); |
573 |
break; |
574 |
case 't': /* threshold */ |
575 |
getparam(s+2, "specular threshold", 'r', &specthresh); |
576 |
break; |
577 |
default: |
578 |
goto badparam; |
579 |
} |
580 |
break; |
581 |
case '\0': /* nothing */ |
582 |
break; |
583 |
default:; |
584 |
badparam: |
585 |
*sskip(s) = '\0'; |
586 |
sprintf(errmsg, "%s: unknown variable", s); |
587 |
error(COMMAND, errmsg); |
588 |
break; |
589 |
} |
590 |
} |
591 |
|
592 |
|
593 |
traceray(s) /* trace a single ray */ |
594 |
char *s; |
595 |
{ |
596 |
char buf[128]; |
597 |
int x, y; |
598 |
RAY thisray; |
599 |
|
600 |
if (!sscanvec(s, thisray.rorg) || |
601 |
!sscanvec(sskip(sskip(sskip(s))), thisray.rdir)) { |
602 |
|
603 |
if (dev->getcur == NULL) |
604 |
return; |
605 |
(*dev->comout)("Pick ray\n"); |
606 |
if ((*dev->getcur)(&x, &y) == ABORT) |
607 |
return; |
608 |
|
609 |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
610 |
(x+.5)/hresolu, (y+.5)/vresolu) < 0) { |
611 |
error(COMMAND, "not on image"); |
612 |
return; |
613 |
} |
614 |
|
615 |
} else if (normalize(thisray.rdir) == 0.0) { |
616 |
error(COMMAND, "zero ray direction"); |
617 |
return; |
618 |
} |
619 |
|
620 |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
621 |
|
622 |
rayvalue(&thisray); |
623 |
|
624 |
if (thisray.ro == NULL) |
625 |
(*dev->comout)("ray hit nothing"); |
626 |
else { |
627 |
sprintf(buf, "ray hit %s %s \"%s\"", |
628 |
objptr(thisray.ro->omod)->oname, |
629 |
ofun[thisray.ro->otype].funame, |
630 |
thisray.ro->oname); |
631 |
(*dev->comout)(buf); |
632 |
(*dev->comin)(buf, NULL); |
633 |
if (thisray.rot >= FHUGE) |
634 |
(*dev->comout)("at infinity"); |
635 |
else { |
636 |
sprintf(buf, "at (%.6g %.6g %.6g)", thisray.rop[0], |
637 |
thisray.rop[1], thisray.rop[2]); |
638 |
(*dev->comout)(buf); |
639 |
} |
640 |
(*dev->comin)(buf, NULL); |
641 |
sprintf(buf, "value (%.5g %.5g %.5g) (%.1fL)", |
642 |
colval(thisray.rcol,RED), |
643 |
colval(thisray.rcol,GRN), |
644 |
colval(thisray.rcol,BLU), |
645 |
luminance(thisray.rcol)); |
646 |
(*dev->comout)(buf); |
647 |
} |
648 |
(*dev->comin)(buf, NULL); |
649 |
} |
650 |
|
651 |
|
652 |
writepict(s) /* write the picture to a file */ |
653 |
char *s; |
654 |
{ |
655 |
static char buf[128]; |
656 |
char *fname; |
657 |
FILE *fp; |
658 |
COLR *scanline; |
659 |
int y; |
660 |
|
661 |
if (sscanf(s, "%s", buf) != 1 && buf[0] == '\0') { |
662 |
error(COMMAND, "no file"); |
663 |
return; |
664 |
} |
665 |
if ((fname = getpath(buf, NULL, 0)) == NULL || |
666 |
(fp = fopen(fname, "w")) == NULL) { |
667 |
sprintf(errmsg, "cannot open \"%s\"", buf); |
668 |
error(COMMAND, errmsg); |
669 |
return; |
670 |
} |
671 |
#ifdef MSDOS |
672 |
setmode(fileno(fp), O_BINARY); |
673 |
#endif |
674 |
(*dev->comout)("writing \""); |
675 |
(*dev->comout)(fname); |
676 |
(*dev->comout)("\"...\n"); |
677 |
/* write header */ |
678 |
fputs(progname, fp); |
679 |
fprintview(&ourview, fp); |
680 |
if (octname != NULL) |
681 |
fprintf(fp, " %s\n", octname); |
682 |
else |
683 |
putc('\n', fp); |
684 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
685 |
if (exposure != 1.0) |
686 |
fputexpos(exposure, fp); |
687 |
if (dev->pixaspect != 1.0) |
688 |
fputaspect(dev->pixaspect, fp); |
689 |
fputformat(COLRFMT, fp); |
690 |
putc('\n', fp); |
691 |
fprtresolu(hresolu, vresolu, fp); |
692 |
|
693 |
scanline = (COLR *)malloc(hresolu*sizeof(COLR)); |
694 |
if (scanline == NULL) { |
695 |
error(COMMAND, "not enough memory!"); |
696 |
fclose(fp); |
697 |
unlink(fname); |
698 |
return; |
699 |
} |
700 |
for (y = vresolu-1; y >= 0; y--) { |
701 |
getpictcolrs(y, scanline, &ptrunk, hresolu, vresolu); |
702 |
if (fwritecolrs(scanline, hresolu, fp) < 0) |
703 |
break; |
704 |
} |
705 |
free((char *)scanline); |
706 |
if (fclose(fp) < 0) |
707 |
error(COMMAND, "write error"); |
708 |
} |