1 |
/* Copyright (c) 1995 Regents of the University of California */ |
2 |
|
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#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 |
*/ |
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|
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#include "ray.h" |
14 |
|
15 |
#include "octree.h" |
16 |
|
17 |
#include "otypes.h" |
18 |
|
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#include "rpaint.h" |
20 |
|
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#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(); |
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|
35 |
extern FILE *popen(); |
36 |
|
37 |
extern char rifname[128]; /* rad input file name */ |
38 |
|
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extern char VersionID[]; |
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extern char *progname; |
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extern char *octname; |
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|
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|
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getframe(s) /* get a new frame */ |
45 |
char *s; |
46 |
{ |
47 |
if (getrect(s, &pframe) < 0) |
48 |
return; |
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pdepth = 0; |
50 |
} |
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|
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|
53 |
getrepaint(s) /* get area and repaint */ |
54 |
char *s; |
55 |
{ |
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RECT box; |
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|
58 |
if (getrect(s, &box) < 0) |
59 |
return; |
60 |
paintrect(&ptrunk, 0, 0, hresolu, vresolu, &box); |
61 |
} |
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|
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|
64 |
getview(s) /* get/show view parameters */ |
65 |
char *s; |
66 |
{ |
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FILE *fp; |
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char buf[128]; |
69 |
char *fname; |
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int change = 0; |
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VIEW nv; |
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|
73 |
while (isspace(*s)) |
74 |
s++; |
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if (*s == '-') { /* command line parameters */ |
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copystruct(&nv, &ourview); |
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if (sscanview(&nv, s)) |
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newview(&nv); |
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else |
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error(COMMAND, "bad view option(s)"); |
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return; |
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} |
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if (sscanf(s, "%s", buf) == 1) { /* write parameters to a file */ |
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if ((fname = getpath(buf, NULL, 0)) == NULL || |
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(fp = fopen(fname, "a")) == NULL) { |
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sprintf(errmsg, "cannot open \"%s\"", buf); |
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error(COMMAND, errmsg); |
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return; |
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} |
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fputs(progname, fp); |
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fprintview(&ourview, fp); |
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fputs(sskip(s), fp); |
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putc('\n', fp); |
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fclose(fp); |
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return; |
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} |
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sprintf(buf, "view type (%c): ", ourview.type); |
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(*dev->comout)(buf); |
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(*dev->comin)(buf, NULL); |
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if (buf[0] == CTRL('C')) return; |
101 |
if (buf[0] && buf[0] != ourview.type) { |
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nv.type = buf[0]; |
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change++; |
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} else |
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nv.type = ourview.type; |
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sprintf(buf, "view point (%.6g %.6g %.6g): ", |
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ourview.vp[0], ourview.vp[1], ourview.vp[2]); |
108 |
(*dev->comout)(buf); |
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(*dev->comin)(buf, NULL); |
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if (buf[0] == CTRL('C')) return; |
111 |
if (sscanvec(buf, nv.vp)) |
112 |
change++; |
113 |
else |
114 |
VCOPY(nv.vp, ourview.vp); |
115 |
sprintf(buf, "view direction (%.6g %.6g %.6g): ", |
116 |
ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]); |
117 |
(*dev->comout)(buf); |
118 |
(*dev->comin)(buf, NULL); |
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if (buf[0] == CTRL('C')) return; |
120 |
if (sscanvec(buf, nv.vdir)) |
121 |
change++; |
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else |
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VCOPY(nv.vdir, ourview.vdir); |
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sprintf(buf, "view up (%.6g %.6g %.6g): ", |
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ourview.vup[0], ourview.vup[1], ourview.vup[2]); |
126 |
(*dev->comout)(buf); |
127 |
(*dev->comin)(buf, NULL); |
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if (buf[0] == CTRL('C')) return; |
129 |
if (sscanvec(buf, nv.vup)) |
130 |
change++; |
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else |
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VCOPY(nv.vup, ourview.vup); |
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sprintf(buf, "view horiz and vert size (%.6g %.6g): ", |
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ourview.horiz, ourview.vert); |
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(*dev->comout)(buf); |
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(*dev->comin)(buf, NULL); |
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if (buf[0] == CTRL('C')) return; |
138 |
if (sscanf(buf, "%lf %lf", &nv.horiz, &nv.vert) == 2) |
139 |
change++; |
140 |
else { |
141 |
nv.horiz = ourview.horiz; nv.vert = ourview.vert; |
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} |
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sprintf(buf, "fore and aft clipping plane (%.6g %.6g): ", |
144 |
ourview.vfore, ourview.vaft); |
145 |
(*dev->comout)(buf); |
146 |
(*dev->comin)(buf, NULL); |
147 |
if (buf[0] == CTRL('C')) return; |
148 |
if (sscanf(buf, "%lf %lf", &nv.vfore, &nv.vaft) == 2) |
149 |
change++; |
150 |
else { |
151 |
nv.vfore = ourview.vfore; nv.vaft = ourview.vaft; |
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} |
153 |
sprintf(buf, "view shift and lift (%.6g %.6g): ", |
154 |
ourview.hoff, ourview.voff); |
155 |
(*dev->comout)(buf); |
156 |
(*dev->comin)(buf, NULL); |
157 |
if (buf[0] == CTRL('C')) return; |
158 |
if (sscanf(buf, "%lf %lf", &nv.hoff, &nv.voff) == 2) |
159 |
change++; |
160 |
else { |
161 |
nv.hoff = ourview.hoff; nv.voff = ourview.voff; |
162 |
} |
163 |
if (change) |
164 |
newview(&nv); |
165 |
} |
166 |
|
167 |
|
168 |
lastview(s) /* return to a previous view */ |
169 |
char *s; |
170 |
{ |
171 |
char buf[128]; |
172 |
char *fname; |
173 |
int success; |
174 |
VIEW nv; |
175 |
|
176 |
if (sscanf(s, "%s", buf) == 1) { /* get parameters from a file */ |
177 |
copystruct(&nv, &stdview); |
178 |
if ((fname = getpath(buf, "", R_OK)) == NULL || |
179 |
(success = viewfile(fname, &nv, NULL)) == -1) { |
180 |
sprintf(errmsg, "cannot open \"%s\"", buf); |
181 |
error(COMMAND, errmsg); |
182 |
return; |
183 |
} |
184 |
if (!success) |
185 |
error(COMMAND, "wrong file format"); |
186 |
else |
187 |
newview(&nv); |
188 |
return; |
189 |
} |
190 |
if (oldview.type == 0) { /* no old view! */ |
191 |
error(COMMAND, "no previous view"); |
192 |
return; |
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} |
194 |
copystruct(&nv, &ourview); |
195 |
copystruct(&ourview, &oldview); |
196 |
copystruct(&oldview, &nv); |
197 |
newimage(); |
198 |
} |
199 |
|
200 |
|
201 |
saveview(s) /* save view to rad file */ |
202 |
char *s; |
203 |
{ |
204 |
char view[64]; |
205 |
char *fname; |
206 |
FILE *fp; |
207 |
|
208 |
if (*atos(view, sizeof(view), s)) { |
209 |
if (isint(view)) { |
210 |
error(COMMAND, "cannot write view by number"); |
211 |
return; |
212 |
} |
213 |
s = sskip(s); |
214 |
} |
215 |
while (isspace(*s)) |
216 |
s++; |
217 |
if (*s) |
218 |
atos(rifname, sizeof(rifname), s); |
219 |
else if (rifname[0] == '\0') { |
220 |
error(COMMAND, "no previous rad file"); |
221 |
return; |
222 |
} |
223 |
if ((fname = getpath(rifname, NULL, 0)) == NULL || |
224 |
(fp = fopen(fname, "a")) == NULL) { |
225 |
sprintf(errmsg, "cannot open \"%s\"", rifname); |
226 |
error(COMMAND, errmsg); |
227 |
return; |
228 |
} |
229 |
fputs("view= ", fp); |
230 |
fputs(view, fp); |
231 |
fprintview(&ourview, fp); |
232 |
putc('\n', fp); |
233 |
fclose(fp); |
234 |
} |
235 |
|
236 |
|
237 |
loadview(s) /* load view from rad file */ |
238 |
char *s; |
239 |
{ |
240 |
char buf[512]; |
241 |
char *fname; |
242 |
FILE *fp; |
243 |
VIEW nv; |
244 |
|
245 |
strcpy(buf, "rad -n -s -V -v "); |
246 |
if (sscanf(s, "%s", buf+strlen(buf)) == 1) |
247 |
s = sskip(s); |
248 |
else |
249 |
strcat(buf, "1"); |
250 |
if (*s) |
251 |
atos(rifname, sizeof(rifname), s); |
252 |
else if (rifname[0] == '\0') { |
253 |
error(COMMAND, "no previous rad file"); |
254 |
return; |
255 |
} |
256 |
if ((fname = getpath(rifname, "", R_OK)) == NULL) { |
257 |
sprintf(errmsg, "cannot access \"%s\"", rifname); |
258 |
error(COMMAND, errmsg); |
259 |
return; |
260 |
} |
261 |
sprintf(buf+strlen(buf), " %s", fname); |
262 |
if ((fp = popen(buf, "r")) == NULL) { |
263 |
error(COMMAND, "cannot run rad"); |
264 |
return; |
265 |
} |
266 |
buf[0] = '\0'; |
267 |
fgets(buf, sizeof(buf), fp); |
268 |
pclose(fp); |
269 |
copystruct(&nv, &stdview); |
270 |
if (!sscanview(&nv, buf)) { |
271 |
error(COMMAND, "rad error -- no such view?"); |
272 |
return; |
273 |
} |
274 |
newview(&nv); |
275 |
} |
276 |
|
277 |
|
278 |
getaim(s) /* aim camera */ |
279 |
char *s; |
280 |
{ |
281 |
double zfact; |
282 |
VIEW nv; |
283 |
|
284 |
if (getinterest(s, 1, nv.vdir, &zfact) < 0) |
285 |
return; |
286 |
nv.type = ourview.type; |
287 |
VCOPY(nv.vp, ourview.vp); |
288 |
VCOPY(nv.vup, ourview.vup); |
289 |
nv.horiz = ourview.horiz; nv.vert = ourview.vert; |
290 |
nv.vfore = ourview.vfore; nv.vaft = ourview.vaft; |
291 |
nv.hoff = ourview.hoff; nv.voff = ourview.voff; |
292 |
zoomview(&nv, zfact); |
293 |
newview(&nv); |
294 |
} |
295 |
|
296 |
|
297 |
getmove(s) /* move camera */ |
298 |
char *s; |
299 |
{ |
300 |
FVECT vc; |
301 |
double mag; |
302 |
|
303 |
if (getinterest(s, 0, vc, &mag) < 0) |
304 |
return; |
305 |
moveview(0.0, 0.0, mag, vc); |
306 |
} |
307 |
|
308 |
|
309 |
getrotate(s) /* rotate camera */ |
310 |
char *s; |
311 |
{ |
312 |
VIEW nv; |
313 |
FVECT v1; |
314 |
double angle, elev, zfact; |
315 |
|
316 |
elev = 0.0; zfact = 1.0; |
317 |
if (sscanf(s, "%lf %lf %lf", &angle, &elev, &zfact) < 1) { |
318 |
error(COMMAND, "missing angle"); |
319 |
return; |
320 |
} |
321 |
nv.type = ourview.type; |
322 |
VCOPY(nv.vp, ourview.vp); |
323 |
VCOPY(nv.vup, ourview.vup); |
324 |
nv.hoff = ourview.hoff; nv.voff = ourview.voff; |
325 |
nv.vfore = ourview.vfore; nv.vaft = ourview.vaft; |
326 |
spinvector(nv.vdir, ourview.vdir, ourview.vup, angle*(PI/180.)); |
327 |
if (elev != 0.0) { |
328 |
fcross(v1, nv.vdir, ourview.vup); |
329 |
normalize(v1); |
330 |
spinvector(nv.vdir, nv.vdir, v1, elev*(PI/180.)); |
331 |
} |
332 |
nv.horiz = ourview.horiz; nv.vert = ourview.vert; |
333 |
zoomview(&nv, zfact); |
334 |
newview(&nv); |
335 |
} |
336 |
|
337 |
|
338 |
getpivot(s) /* pivot viewpoint */ |
339 |
register char *s; |
340 |
{ |
341 |
FVECT vc; |
342 |
double angle, elev, mag; |
343 |
|
344 |
elev = 0.0; |
345 |
if (sscanf(s, "%lf %lf", &angle, &elev) < 1) { |
346 |
error(COMMAND, "missing angle"); |
347 |
return; |
348 |
} |
349 |
if (getinterest(sskip2(s,2), 0, vc, &mag) < 0) |
350 |
return; |
351 |
moveview(angle, elev, mag, vc); |
352 |
} |
353 |
|
354 |
|
355 |
getexposure(s) /* get new exposure */ |
356 |
char *s; |
357 |
{ |
358 |
char buf[128]; |
359 |
register char *cp; |
360 |
RECT r; |
361 |
int x, y; |
362 |
register PNODE *p = &ptrunk; |
363 |
int adapt = 0; |
364 |
double e = 1.0; |
365 |
|
366 |
for (cp = s; isspace(*cp); cp++) |
367 |
; |
368 |
if (*cp == '@') { |
369 |
adapt++; |
370 |
while (isspace(*++cp)) |
371 |
; |
372 |
} |
373 |
if (*cp == '\0') { /* normalize to point */ |
374 |
if (dev->getcur == NULL) |
375 |
return; |
376 |
(*dev->comout)("Pick point for exposure\n"); |
377 |
if ((*dev->getcur)(&x, &y) == ABORT) |
378 |
return; |
379 |
r.l = r.d = 0; |
380 |
r.r = hresolu; r.u = vresolu; |
381 |
p = findrect(x, y, &ptrunk, &r, -1); |
382 |
} else { |
383 |
if (*cp == '=') { /* absolute setting */ |
384 |
p = NULL; |
385 |
e = 1.0/exposure; |
386 |
for (cp++; isspace(*cp); cp++) |
387 |
; |
388 |
if (*cp == '\0') { /* interactive */ |
389 |
sprintf(buf, "exposure (%f): ", exposure); |
390 |
(*dev->comout)(buf); |
391 |
(*dev->comin)(buf, NULL); |
392 |
for (cp = buf; isspace(*cp); cp++) |
393 |
; |
394 |
if (*cp == '\0') |
395 |
return; |
396 |
} |
397 |
} |
398 |
if (*cp == '+' || *cp == '-') /* f-stops */ |
399 |
e *= pow(2.0, atof(cp)); |
400 |
else /* multiplier */ |
401 |
e *= atof(cp); |
402 |
} |
403 |
if (p != NULL) { /* relative setting */ |
404 |
if (bright(p->v) < 1e-15) { |
405 |
error(COMMAND, "cannot normalize to zero"); |
406 |
return; |
407 |
} |
408 |
if (adapt) |
409 |
e *= 106./pow(1.219+pow(luminance(p->v)/exposure,.4),2.5)/exposure; |
410 |
else |
411 |
e *= 0.5 / bright(p->v); |
412 |
} |
413 |
if (e <= FTINY || fabs(1.0 - e) <= FTINY) |
414 |
return; |
415 |
scalepict(&ptrunk, e); |
416 |
exposure *= e; |
417 |
redraw(); |
418 |
} |
419 |
|
420 |
|
421 |
getparam(str, dsc, typ, ptr) /* get variable from user */ |
422 |
char *str, *dsc; |
423 |
int typ; |
424 |
register union {int i; double d; COLOR C;} *ptr; |
425 |
{ |
426 |
extern char *index(); |
427 |
int i0; |
428 |
double d0, d1, d2; |
429 |
char buf[48]; |
430 |
|
431 |
switch (typ) { |
432 |
case 'i': /* integer */ |
433 |
if (sscanf(str, "%d", &i0) != 1) { |
434 |
(*dev->comout)(dsc); |
435 |
sprintf(buf, " (%d): ", ptr->i); |
436 |
(*dev->comout)(buf); |
437 |
(*dev->comin)(buf, NULL); |
438 |
if (sscanf(buf, "%d", &i0) != 1) |
439 |
return(0); |
440 |
} |
441 |
ptr->i = i0; |
442 |
return(1); |
443 |
case 'r': /* real */ |
444 |
if (sscanf(str, "%lf", &d0) != 1) { |
445 |
(*dev->comout)(dsc); |
446 |
sprintf(buf, " (%.6g): ", ptr->d); |
447 |
(*dev->comout)(buf); |
448 |
(*dev->comin)(buf, NULL); |
449 |
if (sscanf(buf, "%lf", &d0) != 1) |
450 |
return(0); |
451 |
} |
452 |
ptr->d = d0; |
453 |
return(1); |
454 |
case 'b': /* boolean */ |
455 |
if (sscanf(str, "%1s", buf) != 1) { |
456 |
(*dev->comout)(dsc); |
457 |
sprintf(buf, "? (%c): ", ptr->i ? 'y' : 'n'); |
458 |
(*dev->comout)(buf); |
459 |
(*dev->comin)(buf, NULL); |
460 |
if (buf[0] == '\0' || |
461 |
index("yY+1tTnN-0fF", buf[0]) == NULL) |
462 |
return(0); |
463 |
} |
464 |
ptr->i = index("yY+1tT", buf[0]) != NULL; |
465 |
return(1); |
466 |
case 'C': /* color */ |
467 |
if (sscanf(str, "%lf %lf %lf", &d0, &d1, &d2) != 3) { |
468 |
(*dev->comout)(dsc); |
469 |
sprintf(buf, " (%.6g %.6g %.6g): ", |
470 |
colval(ptr->C,RED), |
471 |
colval(ptr->C,GRN), |
472 |
colval(ptr->C,BLU)); |
473 |
(*dev->comout)(buf); |
474 |
(*dev->comin)(buf, NULL); |
475 |
if (sscanf(buf, "%lf %lf %lf", &d0, &d1, &d2) != 3) |
476 |
return(0); |
477 |
} |
478 |
setcolor(ptr->C, d0, d1, d2); |
479 |
return(1); |
480 |
} |
481 |
} |
482 |
|
483 |
|
484 |
setparam(s) /* get/set program parameter */ |
485 |
register char *s; |
486 |
{ |
487 |
extern int psample; |
488 |
extern double maxdiff; |
489 |
extern double minweight; |
490 |
extern int maxdepth; |
491 |
extern double dstrsrc; |
492 |
extern double shadthresh; |
493 |
extern double shadcert; |
494 |
extern COLOR ambval; |
495 |
extern int ambvwt; |
496 |
extern double ambacc; |
497 |
extern int ambres; |
498 |
extern int ambdiv; |
499 |
extern int ambssamp; |
500 |
extern int ambounce; |
501 |
extern COLOR cextinction; |
502 |
extern COLOR salbedo; |
503 |
extern double seccg; |
504 |
extern double ssampdist; |
505 |
extern int directvis; |
506 |
extern double srcsizerat; |
507 |
extern int do_irrad; |
508 |
extern double specjitter; |
509 |
extern double specthresh; |
510 |
extern int backvis; |
511 |
char buf[128]; |
512 |
|
513 |
if (s[0] == '\0') { |
514 |
(*dev->comout)( |
515 |
"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: "); |
516 |
(*dev->comin)(buf, NULL); |
517 |
s = buf; |
518 |
} |
519 |
switch (s[0]) { |
520 |
case 'l': /* limit */ |
521 |
switch (s[1]) { |
522 |
case 'w': /* weight */ |
523 |
getparam(s+2, "limit weight", 'r', &minweight); |
524 |
break; |
525 |
case 'r': /* reflection */ |
526 |
getparam(s+2, "limit reflection", 'i', &maxdepth); |
527 |
break; |
528 |
default: |
529 |
goto badparam; |
530 |
} |
531 |
break; |
532 |
case 'd': /* direct */ |
533 |
switch (s[1]) { |
534 |
case 'j': /* jitter */ |
535 |
getparam(s+2, "direct jitter", 'r', &dstrsrc); |
536 |
break; |
537 |
case 'c': /* certainty */ |
538 |
getparam(s+2, "direct certainty", 'r', &shadcert); |
539 |
break; |
540 |
case 't': /* threshold */ |
541 |
getparam(s+2, "direct threshold", 'r', &shadthresh); |
542 |
break; |
543 |
case 'v': /* visibility */ |
544 |
getparam(s+2, "direct visibility", |
545 |
'b', &directvis); |
546 |
break; |
547 |
case 's': /* sampling */ |
548 |
getparam(s+2, "direct sampling", 'r', &srcsizerat); |
549 |
break; |
550 |
default: |
551 |
goto badparam; |
552 |
} |
553 |
break; |
554 |
case 'b': /* back faces or black and white */ |
555 |
switch (s[1]) { |
556 |
case 'v': /* back face visibility */ |
557 |
getparam(s+2, "back face visibility", 'b', &backvis); |
558 |
break; |
559 |
case '\0': /* black and white */ |
560 |
case ' ': |
561 |
case 'y': case 'Y': case 't': case 'T': case '1': case '+': |
562 |
case 'n': case 'N': case 'f': case 'F': case '0': case '-': |
563 |
getparam(s+1, "black and white", 'b', &greyscale); |
564 |
break; |
565 |
default: |
566 |
goto badparam; |
567 |
} |
568 |
break; |
569 |
case 'i': /* irradiance */ |
570 |
getparam(s+1, "irradiance", 'b', &do_irrad); |
571 |
break; |
572 |
case 'a': /* ambient */ |
573 |
switch (s[1]) { |
574 |
case 'v': /* value */ |
575 |
getparam(s+2, "ambient value", 'C', (COLOR *)ambval); |
576 |
break; |
577 |
case 'w': /* weight */ |
578 |
getparam(s+2, "ambient value weight", 'i', &ambvwt); |
579 |
break; |
580 |
case 'a': /* accuracy */ |
581 |
if (getparam(s+2, "ambient accuracy", 'r', &ambacc)) |
582 |
setambacc(ambacc); |
583 |
break; |
584 |
case 'd': /* divisions */ |
585 |
getparam(s+2, "ambient divisions", 'i', &ambdiv); |
586 |
break; |
587 |
case 's': /* samples */ |
588 |
getparam(s+2, "ambient super-samples", 'i', &ambssamp); |
589 |
break; |
590 |
case 'b': /* bounces */ |
591 |
getparam(s+2, "ambient bounces", 'i', &ambounce); |
592 |
break; |
593 |
case 'r': |
594 |
if (getparam(s+2, "ambient resolution", 'i', &ambres)) |
595 |
setambres(ambres); |
596 |
break; |
597 |
default: |
598 |
goto badparam; |
599 |
} |
600 |
break; |
601 |
case 'm': /* medium */ |
602 |
switch (s[1]) { |
603 |
case 'e': /* extinction coefficient */ |
604 |
getparam(s+2, "extinction coefficient", 'C', |
605 |
(COLOR *)cextinction); |
606 |
break; |
607 |
case 'a': /* scattering albedo */ |
608 |
getparam(s+2, "scattering albedo", 'C', |
609 |
(COLOR *)salbedo); |
610 |
break; |
611 |
case 'g': /* scattering eccentricity */ |
612 |
getparam(s+2, "scattering eccentricity", 'r', &seccg); |
613 |
break; |
614 |
case 's': /* sampling distance */ |
615 |
getparam(s+2, "mist sampling distance", 'r', |
616 |
&ssampdist); |
617 |
break; |
618 |
default: |
619 |
goto badparam; |
620 |
} |
621 |
break; |
622 |
case 'p': /* pixel */ |
623 |
switch (s[1]) { |
624 |
case 's': /* sample */ |
625 |
if (getparam(s+2, "pixel sample", 'i', &psample)) |
626 |
pdepth = 0; |
627 |
break; |
628 |
case 't': /* threshold */ |
629 |
if (getparam(s+2, "pixel threshold", 'r', &maxdiff)) |
630 |
pdepth = 0; |
631 |
break; |
632 |
default: |
633 |
goto badparam; |
634 |
} |
635 |
break; |
636 |
case 's': /* specular */ |
637 |
switch (s[1]) { |
638 |
case 'j': /* jitter */ |
639 |
getparam(s+2, "specular jitter", 'r', &specjitter); |
640 |
break; |
641 |
case 't': /* threshold */ |
642 |
getparam(s+2, "specular threshold", 'r', &specthresh); |
643 |
break; |
644 |
default: |
645 |
goto badparam; |
646 |
} |
647 |
break; |
648 |
case '\0': /* nothing */ |
649 |
break; |
650 |
default:; |
651 |
badparam: |
652 |
*sskip(s) = '\0'; |
653 |
sprintf(errmsg, "%s: unknown variable", s); |
654 |
error(COMMAND, errmsg); |
655 |
break; |
656 |
} |
657 |
} |
658 |
|
659 |
|
660 |
traceray(s) /* trace a single ray */ |
661 |
char *s; |
662 |
{ |
663 |
char buf[128]; |
664 |
int x, y; |
665 |
OBJREC *ino; |
666 |
RAY thisray; |
667 |
|
668 |
thisray.rmax = 0.0; |
669 |
|
670 |
if (!sscanvec(s, thisray.rorg) || |
671 |
!sscanvec(sskip2(s,3), thisray.rdir)) { |
672 |
|
673 |
if (dev->getcur == NULL) |
674 |
return; |
675 |
(*dev->comout)("Pick ray\n"); |
676 |
if ((*dev->getcur)(&x, &y) == ABORT) |
677 |
return; |
678 |
|
679 |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
680 |
&ourview, (x+.5)/hresolu, (y+.5)/vresolu)) < -FTINY) { |
681 |
error(COMMAND, "not on image"); |
682 |
return; |
683 |
} |
684 |
|
685 |
} else if (normalize(thisray.rdir) == 0.0) { |
686 |
error(COMMAND, "zero ray direction"); |
687 |
return; |
688 |
} |
689 |
|
690 |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
691 |
|
692 |
rayvalue(&thisray); |
693 |
|
694 |
if (thisray.ro == NULL) |
695 |
(*dev->comout)("ray hit nothing"); |
696 |
else { |
697 |
sprintf(buf, "ray hit %s%s %s \"%s\"", |
698 |
thisray.rod < 0.0 ? "back of " : "", |
699 |
thisray.ro->omod == OVOID ? VOIDID : |
700 |
objptr(thisray.ro->omod)->oname, |
701 |
ofun[thisray.ro->otype].funame, |
702 |
thisray.ro->oname); |
703 |
if ((ino = objptr(thisray.robj)) != thisray.ro) |
704 |
sprintf(buf+strlen(buf), " in %s \"%s\"", |
705 |
ofun[ino->otype].funame, ino->oname); |
706 |
(*dev->comout)(buf); |
707 |
(*dev->comin)(buf, NULL); |
708 |
if (thisray.rot >= FHUGE) |
709 |
(*dev->comout)("at infinity"); |
710 |
else { |
711 |
sprintf(buf, "at (%.6g %.6g %.6g) (%.6g)", |
712 |
thisray.rop[0], thisray.rop[1], |
713 |
thisray.rop[2], thisray.rt); |
714 |
(*dev->comout)(buf); |
715 |
} |
716 |
(*dev->comin)(buf, NULL); |
717 |
sprintf(buf, "value (%.5g %.5g %.5g) (%.1fL)", |
718 |
colval(thisray.rcol,RED), |
719 |
colval(thisray.rcol,GRN), |
720 |
colval(thisray.rcol,BLU), |
721 |
luminance(thisray.rcol)); |
722 |
(*dev->comout)(buf); |
723 |
} |
724 |
(*dev->comin)(buf, NULL); |
725 |
} |
726 |
|
727 |
|
728 |
writepict(s) /* write the picture to a file */ |
729 |
char *s; |
730 |
{ |
731 |
static char buf[128]; |
732 |
char *fname; |
733 |
FILE *fp; |
734 |
COLR *scanline; |
735 |
int y; |
736 |
|
737 |
while (isspace(*s)) |
738 |
s++; |
739 |
if (*s) |
740 |
atos(buf, sizeof(buf), s); |
741 |
else if (buf[0] == '\0') { |
742 |
error(COMMAND, "no file"); |
743 |
return; |
744 |
} |
745 |
if ((fname = getpath(buf, NULL, 0)) == NULL || |
746 |
(fp = fopen(fname, "w")) == NULL) { |
747 |
sprintf(errmsg, "cannot open \"%s\"", buf); |
748 |
error(COMMAND, errmsg); |
749 |
return; |
750 |
} |
751 |
#ifdef MSDOS |
752 |
setmode(fileno(fp), O_BINARY); |
753 |
#endif |
754 |
(*dev->comout)("writing \""); |
755 |
(*dev->comout)(fname); |
756 |
(*dev->comout)("\"...\n"); |
757 |
/* write header */ |
758 |
newheader("RADIANCE", fp); |
759 |
fputs(progname, fp); |
760 |
fprintview(&ourview, fp); |
761 |
if (octname != NULL) |
762 |
fprintf(fp, " %s\n", octname); |
763 |
else |
764 |
putc('\n', fp); |
765 |
fprintf(fp, "SOFTWARE= %s\n", VersionID); |
766 |
if (exposure != 1.0) |
767 |
fputexpos(exposure, fp); |
768 |
if (dev->pixaspect != 1.0) |
769 |
fputaspect(dev->pixaspect, fp); |
770 |
fputformat(COLRFMT, fp); |
771 |
putc('\n', fp); |
772 |
fprtresolu(hresolu, vresolu, fp); |
773 |
|
774 |
scanline = (COLR *)malloc(hresolu*sizeof(COLR)); |
775 |
if (scanline == NULL) { |
776 |
error(COMMAND, "not enough memory!"); |
777 |
fclose(fp); |
778 |
unlink(fname); |
779 |
return; |
780 |
} |
781 |
for (y = vresolu-1; y >= 0; y--) { |
782 |
getpictcolrs(y, scanline, &ptrunk, hresolu, vresolu); |
783 |
if (fwritecolrs(scanline, hresolu, fp) < 0) |
784 |
break; |
785 |
} |
786 |
free((char *)scanline); |
787 |
if (fclose(fp) < 0) |
788 |
error(COMMAND, "write error"); |
789 |
} |