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/* Copyright (c) 1991 Regents of the University of California */ |
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/* Copyright (c) 1992 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
47 |
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int directinvis = 0; /* sources invisible? */ |
48 |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
49 |
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|
50 |
+ |
double specthresh = .15; /* specular sampling threshold */ |
51 |
+ |
double specjitter = 1.; /* specular sampling jitter */ |
52 |
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|
53 |
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int maxdepth = 6; /* maximum recursion depth */ |
54 |
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double minweight = 5e-3; /* minimum ray weight */ |
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|
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|
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
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|
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#define HFTEMPLATE "/tmp/hfXXXXXX" |
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|
82 |
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static char *hfname = NULL; /* header file name */ |
83 |
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static FILE *hfp = NULL; /* header file pointer */ |
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|
85 |
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static int hres, vres; /* resolution for this frame */ |
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|
87 |
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extern char *mktemp(); |
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|
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double pixvalue(); |
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|
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|
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quit(code) /* quit program */ |
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int code; |
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{ |
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if (code || ralrm > 0) /* report status */ |
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if (code) /* report status */ |
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report(); |
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|
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if (hfname != NULL) { /* delete header file */ |
98 |
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if (hfp != NULL) |
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fclose(hfp); |
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unlink(hfname); |
101 |
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} |
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exit(code); |
103 |
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} |
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|
133 |
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#endif |
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|
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|
136 |
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openheader() /* save standard output to header file */ |
137 |
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{ |
138 |
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hfname = mktemp(HFTEMPLATE); |
139 |
+ |
if (freopen(hfname, "w", stdout) == NULL) { |
140 |
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sprintf(errmsg, "cannot open header file \"%s\"", hfname); |
141 |
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error(SYSTEM, errmsg); |
142 |
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} |
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} |
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|
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|
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closeheader() /* done with header output */ |
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{ |
148 |
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if (hfname == NULL) |
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return; |
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if (fflush(stdout) == EOF || (hfp = fopen(hfname, "r")) == NULL) |
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error(SYSTEM, "error reopening header file"); |
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} |
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|
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|
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dupheader() /* repeat header on standard output */ |
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{ |
157 |
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register int c; |
158 |
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|
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if (fseek(hfp, 0L, 0) < 0) |
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error(SYSTEM, "seek error on header file"); |
161 |
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while ((c = getc(hfp)) != EOF) |
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putchar(c); |
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} |
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|
165 |
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|
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rpict(seq, pout, zout, prvr) /* generate image(s) */ |
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int seq; |
168 |
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char *pout, *zout, *prvr; |
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/* |
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* If seq is greater than zero, then we will render a sequence of |
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* images based on view parameter strings read from the standard input. |
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* If pout is NULL, then all images will be sent to the standard ouput. |
173 |
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* If seq is greater than zero and prvr is an integer, then it is the |
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* frame number at which rendering should begin. Preceeding view parameter |
175 |
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* strings will be skipped in the input. |
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* If pout and prvr are the same, prvr is renamed to avoid overwriting. |
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* Note that pout and zout should contain %d format specifications for |
178 |
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* sequenced file naming. |
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*/ |
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{ |
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extern char *rindex(), *strncpy(), *strcat(); |
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char fbuf[128], fbuf2[128], *zf; |
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RESOLU rs; |
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double pa; |
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/* finished writing header */ |
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closeheader(); |
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/* check sampling */ |
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if (psample < 1) |
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psample = 1; |
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else if (psample > MAXDIV) { |
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sprintf(errmsg, "pixel sampling reduced from %d to %d", |
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psample, MAXDIV); |
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error(WARNING, errmsg); |
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psample = MAXDIV; |
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} |
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/* get starting frame */ |
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if (seq <= 0) |
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seq = 0; |
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else if (prvr != NULL && isint(prvr)) { |
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int rn; /* skip to specified view */ |
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if ((rn = atoi(prvr)) < seq) |
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error(USER, "recover frame less than start frame"); |
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if (pout == NULL) |
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error(USER, "missing output file specification"); |
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for ( ; seq < rn; seq++) |
206 |
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if (nextview(stdin) == EOF) |
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error(USER, "unexpected EOF on view input"); |
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prvr = fbuf; /* mark for renaming */ |
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} |
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if (pout != NULL) { |
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sprintf(fbuf, pout, seq); |
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if (!strcmp(prvr, fbuf)) { /* rename recover file */ |
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fbuf2[0] = '\0'; |
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if ((prvr = rindex(fbuf, '/')) != NULL) |
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strncpy(fbuf2, fbuf, prvr-fbuf+1); |
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strcat(fbuf2, "rfXXXXXX"); |
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prvr = mktemp(fbuf2); |
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if (rename(fbuf, prvr) < 0 && errno != ENOENT) { |
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sprintf(errmsg, |
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"cannot rename \"%s\" to \"%s\"", |
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fbuf, prvr); |
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error(SYSTEM, errmsg); |
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} |
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} |
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} |
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/* render sequence */ |
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do { |
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if (seq && nextview(stdin) == EOF) |
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break; |
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if (pout != NULL) { |
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sprintf(fbuf, pout, seq); |
232 |
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if (freopen(fbuf, "w", stdout) == NULL) { |
233 |
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sprintf(errmsg, |
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"cannot open output file \"%s\"", fbuf); |
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error(SYSTEM, errmsg); |
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} |
237 |
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dupheader(); |
238 |
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} |
239 |
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hres = hresolu; vres = vresolu; pa = pixaspect; |
240 |
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if (prvr != NULL) |
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if (viewfile(prvr, &ourview, &rs) <= 0 |
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|| rs.or != PIXSTANDARD) { |
243 |
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sprintf(errmsg, |
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"cannot recover view parameters from \"%s\"", prvr); |
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error(WARNING, errmsg); |
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} else { |
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char *err; |
248 |
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if ((err = setview(&ourview)) != NULL) |
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error(USER, err); |
250 |
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pa = 0.0; |
251 |
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hres = scanlen(&rs); |
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vres = numscans(&rs); |
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} |
254 |
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normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
255 |
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if (seq) { |
256 |
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if (ralrm > 0) { |
257 |
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sprintf(errmsg, "starting frame %d\n", seq); |
258 |
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eputs(errmsg); |
259 |
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} |
260 |
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printf("FRAME=%d\n", seq); |
261 |
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} |
262 |
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fputs(VIEWSTR, stdout); |
263 |
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fprintview(&ourview, stdout); |
264 |
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putchar('\n'); |
265 |
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if (pa < .99 || pa > 1.01) |
266 |
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fputaspect(pa, stdout); |
267 |
+ |
fputformat(COLRFMT, stdout); |
268 |
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putchar('\n'); |
269 |
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if (zout != NULL) |
270 |
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sprintf(zf=fbuf, zout, seq); |
271 |
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else |
272 |
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zf = NULL; |
273 |
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render(zf, prvr); |
274 |
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prvr = NULL; |
275 |
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} while (seq++); |
276 |
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} |
277 |
+ |
|
278 |
+ |
|
279 |
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nextview(fp) /* get next view from fp */ |
280 |
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FILE *fp; |
281 |
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{ |
282 |
+ |
char linebuf[256], *err; |
283 |
+ |
|
284 |
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while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
285 |
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if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) { |
286 |
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if ((err = setview(&ourview)) != NULL) |
287 |
+ |
error(USER, err); |
288 |
+ |
return(0); |
289 |
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} |
290 |
+ |
return(EOF); |
291 |
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} |
292 |
+ |
|
293 |
+ |
|
294 |
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render(zfile, oldfile) /* render the scene */ |
295 |
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char *zfile, *oldfile; |
296 |
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{ |
305 |
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COLOR *colptr; |
306 |
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float *zptr; |
307 |
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register int i; |
134 |
– |
/* check sampling */ |
135 |
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if (psample < 1) |
136 |
– |
psample = 1; |
137 |
– |
else if (psample > MAXDIV) { |
138 |
– |
sprintf(errmsg, "pixel sampling reduced from %d to %d", |
139 |
– |
psample, MAXDIV); |
140 |
– |
error(WARNING, errmsg); |
141 |
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psample = MAXDIV; |
142 |
– |
} |
308 |
|
/* allocate scanlines */ |
309 |
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for (i = 0; i <= psample; i++) { |
310 |
< |
scanbar[i] = (COLOR *)malloc(hresolu*sizeof(COLOR)); |
310 |
> |
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
311 |
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if (scanbar[i] == NULL) |
312 |
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goto memerr; |
313 |
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} |
314 |
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hstep = (psample*140+49)/99; /* quincunx sampling */ |
315 |
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ystep = (psample*99+70)/140; |
316 |
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if (hstep > 2) { |
317 |
< |
i = hresolu/hstep + 2; |
317 |
> |
i = hres/hstep + 2; |
318 |
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if ((sampdens = malloc(i)) == NULL) |
319 |
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goto memerr; |
320 |
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while (i--) |
328 |
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error(SYSTEM, errmsg); |
329 |
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} |
330 |
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for (i = 0; i <= psample; i++) { |
331 |
< |
zbar[i] = (float *)malloc(hresolu*sizeof(float)); |
331 |
> |
zbar[i] = (float *)malloc(hres*sizeof(float)); |
332 |
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if (zbar[i] == NULL) |
333 |
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goto memerr; |
334 |
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} |
338 |
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zbar[i] = NULL; |
339 |
|
} |
340 |
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/* write out boundaries */ |
341 |
< |
fprtresolu(hresolu, vresolu, stdout); |
341 |
> |
fprtresolu(hres, vres, stdout); |
342 |
|
/* recover file and compute first */ |
343 |
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i = salvage(oldfile); |
344 |
|
if (zfd != -1 && i > 0 && |
345 |
< |
lseek(zfd, (long)i*hresolu*sizeof(float), 0) == -1) |
345 |
> |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
346 |
|
error(SYSTEM, "z file seek error in render"); |
347 |
< |
pctdone = 100.0*i/vresolu; |
347 |
> |
pctdone = 100.0*i/vres; |
348 |
|
if (ralrm > 0) /* report init stats */ |
349 |
|
report(); |
350 |
|
#ifndef BSD |
351 |
|
else |
352 |
|
#endif |
353 |
|
signal(SIGALRM, report); |
354 |
< |
ypos = vresolu-1 - i; |
355 |
< |
fillscanline(scanbar[0], zbar[0], sampdens, hresolu, ypos, hstep); |
354 |
> |
ypos = vres-1 - i; |
355 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
356 |
|
/* compute scanlines */ |
357 |
|
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
358 |
|
/* bottom adjust? */ |
368 |
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zbar[0] = zptr; |
369 |
|
/* fill base line */ |
370 |
|
fillscanline(scanbar[0], zbar[0], sampdens, |
371 |
< |
hresolu, ypos, hstep); |
371 |
> |
hres, ypos, hstep); |
372 |
|
/* fill bar */ |
373 |
< |
fillscanbar(scanbar, zbar, hresolu, ypos, ystep); |
373 |
> |
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
374 |
|
/* write it out */ |
375 |
|
#ifndef BSD |
376 |
|
signal(SIGALRM, SIG_IGN); /* don't interrupt writes */ |
377 |
|
#endif |
378 |
|
for (i = ystep; i > 0; i--) { |
379 |
|
if (zfd != -1 && write(zfd, (char *)zbar[i], |
380 |
< |
hresolu*sizeof(float)) |
381 |
< |
< hresolu*sizeof(float)) |
380 |
> |
hres*sizeof(float)) |
381 |
> |
< hres*sizeof(float)) |
382 |
|
goto writerr; |
383 |
< |
if (fwritescan(scanbar[i], hresolu, stdout) < 0) |
383 |
> |
if (fwritescan(scanbar[i], hres, stdout) < 0) |
384 |
|
goto writerr; |
385 |
|
} |
386 |
|
if (fflush(stdout) == EOF) |
387 |
|
goto writerr; |
388 |
|
/* record progress */ |
389 |
< |
pctdone = 100.0*(vresolu-1-ypos)/vresolu; |
389 |
> |
pctdone = 100.0*(vres-1-ypos)/vres; |
390 |
|
if (ralrm > 0 && time((long *)0) >= tlastrept+ralrm) |
391 |
|
report(); |
392 |
|
#ifndef BSD |
395 |
|
#endif |
396 |
|
} |
397 |
|
/* clean up */ |
398 |
+ |
signal(SIGALRM, SIG_IGN); |
399 |
|
if (zfd != -1) { |
400 |
< |
if (write(zfd, (char *)zbar[0], hresolu*sizeof(float)) |
401 |
< |
< hresolu*sizeof(float)) |
400 |
> |
if (write(zfd, (char *)zbar[0], hres*sizeof(float)) |
401 |
> |
< hres*sizeof(float)) |
402 |
|
goto writerr; |
403 |
|
if (close(zfd) == -1) |
404 |
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goto writerr; |
405 |
|
for (i = 0; i <= psample; i++) |
406 |
|
free((char *)zbar[i]); |
407 |
|
} |
408 |
< |
fwritescan(scanbar[0], hresolu, stdout); |
408 |
> |
fwritescan(scanbar[0], hres, stdout); |
409 |
|
if (fflush(stdout) == EOF) |
410 |
|
goto writerr; |
411 |
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for (i = 0; i <= psample; i++) |
550 |
|
static RAY thisray; |
551 |
|
|
552 |
|
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
553 |
< |
(x+pixjitter())/hresolu, (y+pixjitter())/vresolu) < 0) { |
553 |
> |
(x+pixjitter())/hres, (y+pixjitter())/vres) < 0) { |
554 |
|
setcolor(col, 0.0, 0.0, 0.0); |
555 |
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return(0.0); |
556 |
|
} |
557 |
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|
558 |
|
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
559 |
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|
560 |
< |
samplendx = pixnumber(x,y,hresolu,vresolu); /* set pixel index */ |
560 |
> |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
561 |
|
|
562 |
|
rayvalue(&thisray); /* trace ray */ |
563 |
|
|
593 |
|
return(0); |
594 |
|
} |
595 |
|
|
596 |
< |
if (x != hresolu || y != vresolu) { |
596 |
> |
if (x != hres || y != vres) { |
597 |
|
sprintf(errmsg, "resolution mismatch in recover file \"%s\"", |
598 |
|
oldfile); |
599 |
|
error(USER, errmsg); |
600 |
|
} |
601 |
|
|
602 |
< |
scanline = (COLR *)malloc(hresolu*sizeof(COLR)); |
602 |
> |
scanline = (COLR *)malloc(hres*sizeof(COLR)); |
603 |
|
if (scanline == NULL) |
604 |
|
error(SYSTEM, "out of memory in salvage"); |
605 |
< |
for (y = 0; y < vresolu; y++) { |
606 |
< |
if (freadcolrs(scanline, hresolu, fp) < 0) |
605 |
> |
for (y = 0; y < vres; y++) { |
606 |
> |
if (freadcolrs(scanline, hres, fp) < 0) |
607 |
|
break; |
608 |
< |
if (fwritecolrs(scanline, hresolu, stdout) < 0) |
608 |
> |
if (fwritecolrs(scanline, hres, stdout) < 0) |
609 |
|
goto writerr; |
610 |
|
} |
611 |
|
if (fflush(stdout) == EOF) |