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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 = .5; /* specular sampling threshold */ |
50 |
> |
double specthresh = .15; /* specular sampling threshold */ |
51 |
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double specjitter = 1.; /* specular sampling jitter */ |
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|
53 |
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int maxdepth = 6; /* maximum recursion depth */ |
77 |
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|
78 |
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
79 |
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|
80 |
+ |
#define RFTEMPLATE "rfXXXXXX" |
81 |
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#define HFTEMPLATE "/tmp/hfXXXXXX" |
82 |
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|
83 |
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static char *hfname = NULL; /* header file name */ |
84 |
+ |
static FILE *hfp = NULL; /* header file pointer */ |
85 |
+ |
|
86 |
+ |
static int hres, vres; /* resolution for this frame */ |
87 |
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|
88 |
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extern char *mktemp(); |
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|
90 |
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double pixvalue(); |
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|
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|
93 |
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quit(code) /* quit program */ |
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int code; |
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{ |
96 |
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if (code || ralrm > 0) /* report status */ |
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> |
if (code) /* report status */ |
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report(); |
98 |
< |
|
98 |
> |
if (hfname != NULL) { /* delete header file */ |
99 |
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if (hfp != NULL) |
100 |
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fclose(hfp); |
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unlink(hfname); |
102 |
> |
} |
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exit(code); |
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} |
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|
134 |
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#endif |
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|
136 |
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|
137 |
+ |
openheader() /* save standard output to header file */ |
138 |
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{ |
139 |
+ |
hfname = mktemp(HFTEMPLATE); |
140 |
+ |
if (freopen(hfname, "w", stdout) == NULL) { |
141 |
+ |
sprintf(errmsg, "cannot open header file \"%s\"", hfname); |
142 |
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error(SYSTEM, errmsg); |
143 |
+ |
} |
144 |
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} |
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|
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|
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closeheader() /* done with header output */ |
148 |
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{ |
149 |
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if (hfname == NULL) |
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return; |
151 |
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if (fflush(stdout) == EOF || (hfp = fopen(hfname, "r")) == NULL) |
152 |
+ |
error(SYSTEM, "error reopening header file"); |
153 |
+ |
} |
154 |
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|
155 |
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|
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dupheader() /* repeat header on standard output */ |
157 |
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{ |
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register int c; |
159 |
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|
160 |
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if (fseek(hfp, 0L, 0) < 0) |
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error(SYSTEM, "seek error on header file"); |
162 |
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while ((c = getc(hfp)) != EOF) |
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putchar(c); |
164 |
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} |
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|
166 |
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|
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rpict(seq, pout, zout, prvr) /* generate image(s) */ |
168 |
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int seq; |
169 |
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char *pout, *zout, *prvr; |
170 |
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/* |
171 |
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* If seq is greater than zero, then we will render a sequence of |
172 |
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* images based on view parameter strings read from the standard input. |
173 |
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* If pout is NULL, then all images will be sent to the standard ouput. |
174 |
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* If seq is greater than zero and prvr is an integer, then it is the |
175 |
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* frame number at which rendering should begin. Preceeding view parameter |
176 |
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* strings will be skipped in the input. |
177 |
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* If pout and prvr are the same, prvr is renamed to avoid overwriting. |
178 |
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* Note that pout and zout should contain %d format specifications for |
179 |
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* sequenced file naming. |
180 |
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*/ |
181 |
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{ |
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extern char *rindex(), *strncpy(), *strcat(); |
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char fbuf[128], fbuf2[128]; |
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register char *cp; |
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RESOLU rs; |
186 |
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double pa; |
187 |
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/* finished writing header */ |
188 |
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closeheader(); |
189 |
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/* check sampling */ |
190 |
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if (psample < 1) |
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psample = 1; |
192 |
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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); |
195 |
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error(WARNING, errmsg); |
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psample = MAXDIV; |
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} |
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/* get starting frame */ |
199 |
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if (seq <= 0) |
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seq = 0; |
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else if (prvr != NULL && isint(prvr)) { |
202 |
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register int rn; /* skip to specified view */ |
203 |
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if ((rn = atoi(prvr)) < seq) |
204 |
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error(USER, "recover frame less than start frame"); |
205 |
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if (pout == NULL) |
206 |
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error(USER, "missing output file specification"); |
207 |
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for ( ; seq < rn; seq++) |
208 |
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if (nextview(stdin) == EOF) |
209 |
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error(USER, "unexpected EOF on view input"); |
210 |
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prvr = fbuf; /* mark for renaming */ |
211 |
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} |
212 |
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if (pout != NULL) { |
213 |
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sprintf(fbuf, pout, seq); |
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if (!strcmp(prvr, fbuf)) { /* rename recover file */ |
215 |
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fbuf2[0] = '\0'; |
216 |
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if ((cp = rindex(fbuf, '/')) != NULL) |
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strncpy(fbuf2, fbuf, cp-fbuf+1); |
218 |
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strcat(fbuf2, RFTEMPLATE); |
219 |
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prvr = mktemp(fbuf2); |
220 |
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if (rename(fbuf, prvr) < 0 && errno != ENOENT) { |
221 |
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sprintf(errmsg, |
222 |
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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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} |
226 |
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} |
227 |
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} |
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/* render sequence */ |
229 |
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do { |
230 |
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if (seq && nextview(stdin) == EOF) |
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break; |
232 |
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if (pout != NULL) { |
233 |
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sprintf(fbuf, pout, seq); |
234 |
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if (freopen(fbuf, "w", stdout) == NULL) { |
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sprintf(errmsg, |
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"cannot open output file \"%s\"", fbuf); |
237 |
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error(SYSTEM, errmsg); |
238 |
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} |
239 |
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dupheader(); |
240 |
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} |
241 |
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hres = hresolu; vres = vresolu; pa = pixaspect; |
242 |
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if (prvr != NULL) |
243 |
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if (viewfile(prvr, &ourview, &rs) <= 0 |
244 |
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|| rs.or != PIXSTANDARD) { |
245 |
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sprintf(errmsg, |
246 |
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"cannot recover view parameters from \"%s\"", prvr); |
247 |
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error(WARNING, errmsg); |
248 |
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} else { |
249 |
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pa = 0.0; |
250 |
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hres = scanlen(&rs); |
251 |
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vres = numscans(&rs); |
252 |
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} |
253 |
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if ((cp = setview(&ourview)) != NULL) |
254 |
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error(USER, cp); |
255 |
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normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
256 |
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if (seq) { |
257 |
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if (ralrm > 0) { |
258 |
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sprintf(errmsg, "starting frame %d\n", seq); |
259 |
+ |
eputs(errmsg); |
260 |
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} |
261 |
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printf("FRAME=%d\n", seq); |
262 |
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} |
263 |
+ |
fputs(VIEWSTR, stdout); |
264 |
+ |
fprintview(&ourview, stdout); |
265 |
+ |
putchar('\n'); |
266 |
+ |
if (pa < .99 || pa > 1.01) |
267 |
+ |
fputaspect(pa, stdout); |
268 |
+ |
fputformat(COLRFMT, stdout); |
269 |
+ |
putchar('\n'); |
270 |
+ |
if (zout != NULL) |
271 |
+ |
sprintf(cp=fbuf, zout, seq); |
272 |
+ |
else |
273 |
+ |
cp = NULL; |
274 |
+ |
render(cp, prvr); |
275 |
+ |
prvr = NULL; |
276 |
+ |
} while (seq++); |
277 |
+ |
} |
278 |
+ |
|
279 |
+ |
|
280 |
+ |
nextview(fp) /* get next view from fp */ |
281 |
+ |
FILE *fp; |
282 |
+ |
{ |
283 |
+ |
char linebuf[256]; |
284 |
+ |
|
285 |
+ |
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
286 |
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if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
287 |
+ |
return(0); |
288 |
+ |
return(EOF); |
289 |
+ |
} |
290 |
+ |
|
291 |
+ |
|
292 |
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render(zfile, oldfile) /* render the scene */ |
293 |
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char *zfile, *oldfile; |
294 |
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{ |
303 |
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COLOR *colptr; |
304 |
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float *zptr; |
305 |
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register int i; |
137 |
– |
/* check sampling */ |
138 |
– |
if (psample < 1) |
139 |
– |
psample = 1; |
140 |
– |
else if (psample > MAXDIV) { |
141 |
– |
sprintf(errmsg, "pixel sampling reduced from %d to %d", |
142 |
– |
psample, MAXDIV); |
143 |
– |
error(WARNING, errmsg); |
144 |
– |
psample = MAXDIV; |
145 |
– |
} |
306 |
|
/* allocate scanlines */ |
307 |
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for (i = 0; i <= psample; i++) { |
308 |
< |
scanbar[i] = (COLOR *)malloc(hresolu*sizeof(COLOR)); |
308 |
> |
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
309 |
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if (scanbar[i] == NULL) |
310 |
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goto memerr; |
311 |
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} |
312 |
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hstep = (psample*140+49)/99; /* quincunx sampling */ |
313 |
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ystep = (psample*99+70)/140; |
314 |
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if (hstep > 2) { |
315 |
< |
i = hresolu/hstep + 2; |
315 |
> |
i = hres/hstep + 2; |
316 |
|
if ((sampdens = malloc(i)) == NULL) |
317 |
|
goto memerr; |
318 |
|
while (i--) |
326 |
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error(SYSTEM, errmsg); |
327 |
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} |
328 |
|
for (i = 0; i <= psample; i++) { |
329 |
< |
zbar[i] = (float *)malloc(hresolu*sizeof(float)); |
329 |
> |
zbar[i] = (float *)malloc(hres*sizeof(float)); |
330 |
|
if (zbar[i] == NULL) |
331 |
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goto memerr; |
332 |
|
} |
336 |
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zbar[i] = NULL; |
337 |
|
} |
338 |
|
/* write out boundaries */ |
339 |
< |
fprtresolu(hresolu, vresolu, stdout); |
339 |
> |
fprtresolu(hres, vres, stdout); |
340 |
|
/* recover file and compute first */ |
341 |
|
i = salvage(oldfile); |
342 |
|
if (zfd != -1 && i > 0 && |
343 |
< |
lseek(zfd, (long)i*hresolu*sizeof(float), 0) == -1) |
343 |
> |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
344 |
|
error(SYSTEM, "z file seek error in render"); |
345 |
< |
pctdone = 100.0*i/vresolu; |
345 |
> |
pctdone = 100.0*i/vres; |
346 |
|
if (ralrm > 0) /* report init stats */ |
347 |
|
report(); |
348 |
|
#ifndef BSD |
349 |
|
else |
350 |
|
#endif |
351 |
|
signal(SIGALRM, report); |
352 |
< |
ypos = vresolu-1 - i; |
353 |
< |
fillscanline(scanbar[0], zbar[0], sampdens, hresolu, ypos, hstep); |
352 |
> |
ypos = vres-1 - i; |
353 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
354 |
|
/* compute scanlines */ |
355 |
|
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
356 |
|
/* bottom adjust? */ |
366 |
|
zbar[0] = zptr; |
367 |
|
/* fill base line */ |
368 |
|
fillscanline(scanbar[0], zbar[0], sampdens, |
369 |
< |
hresolu, ypos, hstep); |
369 |
> |
hres, ypos, hstep); |
370 |
|
/* fill bar */ |
371 |
< |
fillscanbar(scanbar, zbar, hresolu, ypos, ystep); |
371 |
> |
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
372 |
|
/* write it out */ |
373 |
|
#ifndef BSD |
374 |
|
signal(SIGALRM, SIG_IGN); /* don't interrupt writes */ |
375 |
|
#endif |
376 |
|
for (i = ystep; i > 0; i--) { |
377 |
|
if (zfd != -1 && write(zfd, (char *)zbar[i], |
378 |
< |
hresolu*sizeof(float)) |
379 |
< |
< hresolu*sizeof(float)) |
378 |
> |
hres*sizeof(float)) |
379 |
> |
< hres*sizeof(float)) |
380 |
|
goto writerr; |
381 |
< |
if (fwritescan(scanbar[i], hresolu, stdout) < 0) |
381 |
> |
if (fwritescan(scanbar[i], hres, stdout) < 0) |
382 |
|
goto writerr; |
383 |
|
} |
384 |
|
if (fflush(stdout) == EOF) |
385 |
|
goto writerr; |
386 |
|
/* record progress */ |
387 |
< |
pctdone = 100.0*(vresolu-1-ypos)/vresolu; |
387 |
> |
pctdone = 100.0*(vres-1-ypos)/vres; |
388 |
|
if (ralrm > 0 && time((long *)0) >= tlastrept+ralrm) |
389 |
|
report(); |
390 |
|
#ifndef BSD |
393 |
|
#endif |
394 |
|
} |
395 |
|
/* clean up */ |
396 |
+ |
signal(SIGALRM, SIG_IGN); |
397 |
|
if (zfd != -1) { |
398 |
< |
if (write(zfd, (char *)zbar[0], hresolu*sizeof(float)) |
399 |
< |
< hresolu*sizeof(float)) |
398 |
> |
if (write(zfd, (char *)zbar[0], hres*sizeof(float)) |
399 |
> |
< hres*sizeof(float)) |
400 |
|
goto writerr; |
401 |
|
if (close(zfd) == -1) |
402 |
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goto writerr; |
403 |
|
for (i = 0; i <= psample; i++) |
404 |
|
free((char *)zbar[i]); |
405 |
|
} |
406 |
< |
fwritescan(scanbar[0], hresolu, stdout); |
406 |
> |
fwritescan(scanbar[0], hres, stdout); |
407 |
|
if (fflush(stdout) == EOF) |
408 |
|
goto writerr; |
409 |
|
for (i = 0; i <= psample; i++) |
548 |
|
static RAY thisray; |
549 |
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|
550 |
|
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
551 |
< |
(x+pixjitter())/hresolu, (y+pixjitter())/vresolu) < 0) { |
551 |
> |
(x+pixjitter())/hres, (y+pixjitter())/vres) < 0) { |
552 |
|
setcolor(col, 0.0, 0.0, 0.0); |
553 |
|
return(0.0); |
554 |
|
} |
555 |
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|
556 |
|
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
557 |
|
|
558 |
< |
samplendx = pixnumber(x,y,hresolu,vresolu); /* set pixel index */ |
558 |
> |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
559 |
|
|
560 |
|
rayvalue(&thisray); /* trace ray */ |
561 |
|
|
591 |
|
return(0); |
592 |
|
} |
593 |
|
|
594 |
< |
if (x != hresolu || y != vresolu) { |
594 |
> |
if (x != hres || y != vres) { |
595 |
|
sprintf(errmsg, "resolution mismatch in recover file \"%s\"", |
596 |
|
oldfile); |
597 |
|
error(USER, errmsg); |
598 |
|
} |
599 |
|
|
600 |
< |
scanline = (COLR *)malloc(hresolu*sizeof(COLR)); |
600 |
> |
scanline = (COLR *)malloc(hres*sizeof(COLR)); |
601 |
|
if (scanline == NULL) |
602 |
|
error(SYSTEM, "out of memory in salvage"); |
603 |
< |
for (y = 0; y < vresolu; y++) { |
604 |
< |
if (freadcolrs(scanline, hresolu, fp) < 0) |
603 |
> |
for (y = 0; y < vres; y++) { |
604 |
> |
if (freadcolrs(scanline, hres, fp) < 0) |
605 |
|
break; |
606 |
< |
if (fwritecolrs(scanline, hresolu, stdout) < 0) |
606 |
> |
if (fwritecolrs(scanline, hres, stdout) < 0) |
607 |
|
goto writerr; |
608 |
|
} |
609 |
|
if (fflush(stdout) == EOF) |
613 |
|
unlink(oldfile); |
614 |
|
return(y); |
615 |
|
writerr: |
616 |
< |
error(SYSTEM, "write error in salvage"); |
616 |
> |
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
617 |
> |
error(SYSTEM, errmsg); |
618 |
|
} |
619 |
|
|
620 |
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|