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/* Copyright (c) 1986 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"; |
17 |
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#include <sys/resource.h> |
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#endif |
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|
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#include <signal.h> |
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|
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#include "view.h" |
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|
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#include "resolu.h" |
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|
26 |
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#include "random.h" |
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|
28 |
< |
VIEW ourview = STDVIEW(512); /* view parameters */ |
28 |
> |
#include "paths.h" |
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|
30 |
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#define RFTEMPLATE "rfXXXXXX" |
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|
32 |
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int dimlist[MAXDIM]; /* sampling dimensions */ |
33 |
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int ndims = 0; /* number of sampling dimensions */ |
34 |
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int samplendx; /* sample index number */ |
35 |
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|
36 |
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VIEW ourview = STDVIEW; /* view parameters */ |
37 |
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int hresolu = 512; /* horizontal resolution */ |
38 |
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int vresolu = 512; /* vertical resolution */ |
39 |
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double pixaspect = 1.0; /* pixel aspect ratio */ |
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|
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int psample = 4; /* pixel sample size */ |
42 |
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double maxdiff = .05; /* max. difference for interpolation */ |
43 |
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double dstrpix = 0.67; /* square pixel distribution */ |
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> |
double maxdiff = .05; /* max. difference for interpolation */ |
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double dstrpix = 0.67; /* square pixel distribution */ |
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|
45 |
< |
double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .05; /* shadow threshold */ |
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> |
double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .05; /* shadow threshold */ |
47 |
> |
double shadcert = .5; /* shadow certainty */ |
48 |
> |
int directrelay = 1; /* number of source relays */ |
49 |
> |
int vspretest = 512; /* virtual source pretest density */ |
50 |
> |
int directvis = 1; /* sources visible? */ |
51 |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
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|
53 |
+ |
double specthresh = .15; /* specular sampling threshold */ |
54 |
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double specjitter = 1.; /* specular sampling jitter */ |
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|
56 |
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int maxdepth = 6; /* maximum recursion depth */ |
57 |
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double minweight = 5e-3; /* minimum ray weight */ |
57 |
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double minweight = 5e-3; /* minimum ray weight */ |
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|
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COLOR ambval = BLKCOLOR; /* ambient value */ |
60 |
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double ambacc = 0.2; /* ambient accuracy */ |
61 |
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int ambres = 128; /* ambient resolution */ |
60 |
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double ambacc = 0.2; /* ambient accuracy */ |
61 |
> |
int ambres = 32; /* ambient resolution */ |
62 |
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int ambdiv = 128; /* ambient divisions */ |
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int ambssamp = 0; /* ambient super-samples */ |
64 |
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int ambounce = 0; /* ambient bounces */ |
65 |
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char *amblist[128]; /* ambient include/exclude list */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
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|
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#ifdef MSDOS |
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int ralrm = 60; /* seconds between reports */ |
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#else |
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int ralrm = 0; /* seconds between reports */ |
72 |
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#endif |
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|
74 |
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double pctdone = 0.0; /* percentage done */ |
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double pctdone = 0.0; /* percentage done */ |
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|
76 |
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long tlastrept = 0L; /* time at last report */ |
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|
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extern long time(); |
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extern long tstart; /* starting time */ |
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|
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extern long nrays; /* number of rays traced */ |
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|
83 |
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#define MAXDIV 32 /* maximum sample size */ |
83 |
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#define MAXDIV 16 /* maximum sample size */ |
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|
85 |
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
85 |
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#define pixjitter() (.5+dstrpix*(.5-frandom())) |
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|
87 |
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static int hres, vres; /* resolution for this frame */ |
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|
89 |
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extern char *mktemp(); |
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|
91 |
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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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headclean(); /* delete header file */ |
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pfclean(); /* clean up persist files */ |
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exit(code); |
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} |
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|
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|
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#ifdef BSD |
106 |
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report() /* report progress */ |
107 |
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{ |
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#ifdef BSD |
108 |
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struct rusage rubuf; |
109 |
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double t; |
109 |
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double t; |
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|
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getrusage(RUSAGE_SELF, &rubuf); |
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t = (rubuf.ru_utime.tv_usec + rubuf.ru_stime.tv_usec) / 1e6; |
117 |
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|
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sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f CPU hours\n", |
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nrays, pctdone, t/3600.0); |
120 |
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eputs(errmsg); |
121 |
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tlastrept = time((long *)0); |
122 |
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} |
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#else |
124 |
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sprintf(errmsg, "%ld rays, %4.2f%% done\n", nrays, pctdone); |
125 |
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#endif |
124 |
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report() /* report progress */ |
125 |
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{ |
126 |
> |
tlastrept = time((long *)0); |
127 |
> |
sprintf(errmsg, "%ld rays, %4.2f%% done after %5.4f hours\n", |
128 |
> |
nrays, pctdone, (tlastrept-tstart)/3600.0); |
129 |
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eputs(errmsg); |
130 |
+ |
signal(SIGALRM, report); |
131 |
+ |
} |
132 |
+ |
#endif |
133 |
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|
134 |
< |
if (ralrm > 0) |
135 |
< |
alarm(ralrm); |
134 |
> |
|
135 |
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rpict(seq, pout, zout, prvr) /* generate image(s) */ |
136 |
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int seq; |
137 |
> |
char *pout, *zout, *prvr; |
138 |
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/* |
139 |
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* If seq is greater than zero, then we will render a sequence of |
140 |
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* images based on view parameter strings read from the standard input. |
141 |
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* If pout is NULL, then all images will be sent to the standard ouput. |
142 |
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* If seq is greater than zero and prvr is an integer, then it is the |
143 |
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* frame number at which rendering should begin. Preceeding view parameter |
144 |
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* strings will be skipped in the input. |
145 |
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* If pout and prvr are the same, prvr is renamed to avoid overwriting. |
146 |
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* Note that pout and zout should contain %d format specifications for |
147 |
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* sequenced file naming. |
148 |
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*/ |
149 |
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{ |
150 |
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extern char *rindex(), *strncpy(), *strcat(), *strcpy(); |
151 |
> |
char fbuf[128], fbuf2[128]; |
152 |
> |
register char *cp; |
153 |
> |
RESOLU rs; |
154 |
> |
double pa; |
155 |
> |
/* check sampling */ |
156 |
> |
if (psample < 1) |
157 |
> |
psample = 1; |
158 |
> |
else if (psample > MAXDIV) { |
159 |
> |
sprintf(errmsg, "pixel sampling reduced from %d to %d", |
160 |
> |
psample, MAXDIV); |
161 |
> |
error(WARNING, errmsg); |
162 |
> |
psample = MAXDIV; |
163 |
> |
} |
164 |
> |
/* get starting frame */ |
165 |
> |
if (seq <= 0) |
166 |
> |
seq = 0; |
167 |
> |
else if (prvr != NULL && isint(prvr)) { |
168 |
> |
register int rn; /* skip to specified view */ |
169 |
> |
if ((rn = atoi(prvr)) < seq) |
170 |
> |
error(USER, "recover frame less than start frame"); |
171 |
> |
if (pout == NULL) |
172 |
> |
error(USER, "missing output file specification"); |
173 |
> |
for ( ; seq < rn; seq++) |
174 |
> |
if (nextview(stdin) == EOF) |
175 |
> |
error(USER, "unexpected EOF on view input"); |
176 |
> |
prvr = fbuf; /* mark for renaming */ |
177 |
> |
} |
178 |
> |
if (pout != NULL & prvr != NULL) { |
179 |
> |
sprintf(fbuf, pout, seq); |
180 |
> |
if (!strcmp(prvr, fbuf)) { /* rename */ |
181 |
> |
strcpy(fbuf2, fbuf); |
182 |
> |
for (cp = fbuf2; *cp; cp++) |
183 |
> |
; |
184 |
> |
while (cp > fbuf2 && !ISDIRSEP(cp[-1])) |
185 |
> |
cp--; |
186 |
> |
strcpy(cp, RFTEMPLATE); |
187 |
> |
prvr = mktemp(fbuf2); |
188 |
> |
if (rename(fbuf, prvr) < 0 && errno != ENOENT) { |
189 |
> |
sprintf(errmsg, |
190 |
> |
"cannot rename \"%s\" to \"%s\"", |
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fbuf, prvr); |
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> |
error(SYSTEM, errmsg); |
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> |
} |
194 |
> |
} |
195 |
> |
} |
196 |
> |
/* render sequence */ |
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> |
do { |
198 |
> |
if (seq && nextview(stdin) == EOF) |
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break; |
200 |
> |
if (pout != NULL) { |
201 |
> |
sprintf(fbuf, pout, seq); |
202 |
> |
if (freopen(fbuf, "w", stdout) == NULL) { |
203 |
> |
sprintf(errmsg, |
204 |
> |
"cannot open output file \"%s\"", fbuf); |
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> |
error(SYSTEM, errmsg); |
206 |
> |
} |
207 |
> |
#ifdef MSDOS |
208 |
> |
setmode(fileno(stdout), O_BINARY); |
209 |
> |
#endif |
210 |
> |
dupheader(); |
211 |
> |
} |
212 |
> |
hres = hresolu; vres = vresolu; pa = pixaspect; |
213 |
> |
if (prvr != NULL) |
214 |
> |
if (viewfile(prvr, &ourview, &rs) <= 0 |
215 |
> |
|| rs.or != PIXSTANDARD) { |
216 |
> |
sprintf(errmsg, |
217 |
> |
"cannot recover view parameters from \"%s\"", prvr); |
218 |
> |
error(WARNING, errmsg); |
219 |
> |
} else { |
220 |
> |
pa = 0.0; |
221 |
> |
hres = scanlen(&rs); |
222 |
> |
vres = numscans(&rs); |
223 |
> |
} |
224 |
> |
if ((cp = setview(&ourview)) != NULL) |
225 |
> |
error(USER, cp); |
226 |
> |
normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
227 |
> |
if (seq) { |
228 |
> |
if (ralrm > 0) { |
229 |
> |
fprintf(stderr, "FRAME %d:", seq); |
230 |
> |
fprintview(&ourview, stderr); |
231 |
> |
putc('\n', stderr); |
232 |
> |
fflush(stderr); |
233 |
> |
} |
234 |
> |
printf("FRAME=%d\n", seq); |
235 |
> |
} |
236 |
> |
fputs(VIEWSTR, stdout); |
237 |
> |
fprintview(&ourview, stdout); |
238 |
> |
putchar('\n'); |
239 |
> |
if (pa < .99 || pa > 1.01) |
240 |
> |
fputaspect(pa, stdout); |
241 |
> |
fputformat(COLRFMT, stdout); |
242 |
> |
putchar('\n'); |
243 |
> |
if (zout != NULL) |
244 |
> |
sprintf(cp=fbuf, zout, seq); |
245 |
> |
else |
246 |
> |
cp = NULL; |
247 |
> |
render(cp, prvr); |
248 |
> |
prvr = NULL; |
249 |
> |
} while (seq++); |
250 |
|
} |
251 |
|
|
252 |
|
|
253 |
< |
render(oldfile) /* render the scene */ |
254 |
< |
char *oldfile; |
253 |
> |
nextview(fp) /* get next view from fp */ |
254 |
> |
FILE *fp; |
255 |
|
{ |
256 |
+ |
char linebuf[256]; |
257 |
+ |
|
258 |
+ |
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
259 |
+ |
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
260 |
+ |
return(0); |
261 |
+ |
return(EOF); |
262 |
+ |
} |
263 |
+ |
|
264 |
+ |
|
265 |
+ |
render(zfile, oldfile) /* render the scene */ |
266 |
+ |
char *zfile, *oldfile; |
267 |
+ |
{ |
268 |
+ |
extern long lseek(); |
269 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
270 |
+ |
float *zbar[MAXDIV+1]; /* z values */ |
271 |
+ |
char *sampdens; /* previous sample density */ |
272 |
|
int ypos; /* current scanline */ |
273 |
+ |
int ystep; /* current y step size */ |
274 |
+ |
int hstep; /* h step size */ |
275 |
+ |
int zfd; |
276 |
|
COLOR *colptr; |
277 |
+ |
float *zptr; |
278 |
|
register int i; |
279 |
< |
|
99 |
< |
if (psample < 1) |
100 |
< |
psample = 1; |
101 |
< |
else if (psample > MAXDIV) |
102 |
< |
psample = MAXDIV; |
103 |
< |
|
104 |
< |
ourview.hresolu -= ourview.hresolu % psample; |
105 |
< |
ourview.vresolu -= ourview.vresolu % psample; |
106 |
< |
|
279 |
> |
/* allocate scanlines */ |
280 |
|
for (i = 0; i <= psample; i++) { |
281 |
< |
scanbar[i] = (COLOR *)malloc((ourview.hresolu+1)*sizeof(COLOR)); |
281 |
> |
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
282 |
|
if (scanbar[i] == NULL) |
283 |
< |
error(SYSTEM, "out of memory in render"); |
283 |
> |
goto memerr; |
284 |
|
} |
285 |
< |
|
285 |
> |
hstep = (psample*140+49)/99; /* quincunx sampling */ |
286 |
> |
ystep = (psample*99+70)/140; |
287 |
> |
if (hstep > 2) { |
288 |
> |
i = hres/hstep + 2; |
289 |
> |
if ((sampdens = malloc(i)) == NULL) |
290 |
> |
goto memerr; |
291 |
> |
while (i--) |
292 |
> |
sampdens[i] = hstep; |
293 |
> |
} else |
294 |
> |
sampdens = NULL; |
295 |
> |
/* open z file */ |
296 |
> |
if (zfile != NULL) { |
297 |
> |
if ((zfd = open(zfile, O_WRONLY|O_CREAT, 0666)) == -1) { |
298 |
> |
sprintf(errmsg, "cannot open z file \"%s\"", zfile); |
299 |
> |
error(SYSTEM, errmsg); |
300 |
> |
} |
301 |
> |
#ifdef MSDOS |
302 |
> |
setmode(zfd, O_BINARY); |
303 |
> |
#endif |
304 |
> |
for (i = 0; i <= psample; i++) { |
305 |
> |
zbar[i] = (float *)malloc(hres*sizeof(float)); |
306 |
> |
if (zbar[i] == NULL) |
307 |
> |
goto memerr; |
308 |
> |
} |
309 |
> |
} else { |
310 |
> |
zfd = -1; |
311 |
> |
for (i = 0; i <= psample; i++) |
312 |
> |
zbar[i] = NULL; |
313 |
> |
} |
314 |
|
/* write out boundaries */ |
315 |
< |
printf("-Y %d +X %d\n", ourview.vresolu, ourview.hresolu); |
316 |
< |
|
317 |
< |
ypos = ourview.vresolu - salvage(oldfile); /* find top line */ |
318 |
< |
fillscanline(scanbar[0], ypos, psample); /* top scan */ |
319 |
< |
|
320 |
< |
for (ypos -= psample; ypos > -psample; ypos -= psample) { |
321 |
< |
|
322 |
< |
colptr = scanbar[psample]; /* get last scanline */ |
323 |
< |
scanbar[psample] = scanbar[0]; |
315 |
> |
fprtresolu(hres, vres, stdout); |
316 |
> |
/* recover file and compute first */ |
317 |
> |
i = salvage(oldfile); |
318 |
> |
if (zfd != -1 && i > 0 && |
319 |
> |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
320 |
> |
error(SYSTEM, "z file seek error in render"); |
321 |
> |
pctdone = 100.0*i/vres; |
322 |
> |
if (ralrm > 0) /* report init stats */ |
323 |
> |
report(); |
324 |
> |
#ifndef BSD |
325 |
> |
else |
326 |
> |
#endif |
327 |
> |
signal(SIGALRM, report); |
328 |
> |
ypos = vres-1 - i; |
329 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
330 |
> |
/* compute scanlines */ |
331 |
> |
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
332 |
> |
/* bottom adjust? */ |
333 |
> |
if (ypos < 0) { |
334 |
> |
ystep += ypos; |
335 |
> |
ypos = 0; |
336 |
> |
} |
337 |
> |
colptr = scanbar[ystep]; /* move base to top */ |
338 |
> |
scanbar[ystep] = scanbar[0]; |
339 |
|
scanbar[0] = colptr; |
340 |
< |
|
341 |
< |
fillscanline(scanbar[0], ypos, psample); /* base scan */ |
342 |
< |
|
343 |
< |
fillscanbar(scanbar, ypos, psample); |
344 |
< |
|
345 |
< |
for (i = psample-1; i >= 0; i--) |
346 |
< |
if (fwritescan(scanbar[i], ourview.hresolu, stdout) < 0) |
340 |
> |
zptr = zbar[ystep]; |
341 |
> |
zbar[ystep] = zbar[0]; |
342 |
> |
zbar[0] = zptr; |
343 |
> |
/* fill base line */ |
344 |
> |
fillscanline(scanbar[0], zbar[0], sampdens, |
345 |
> |
hres, ypos, hstep); |
346 |
> |
/* fill bar */ |
347 |
> |
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
348 |
> |
/* write it out */ |
349 |
> |
#ifndef BSD |
350 |
> |
signal(SIGALRM, SIG_IGN); /* don't interrupt writes */ |
351 |
> |
#endif |
352 |
> |
for (i = ystep; i > 0; i--) { |
353 |
> |
if (zfd != -1 && write(zfd, (char *)zbar[i], |
354 |
> |
hres*sizeof(float)) |
355 |
> |
< hres*sizeof(float)) |
356 |
|
goto writerr; |
357 |
+ |
if (fwritescan(scanbar[i], hres, stdout) < 0) |
358 |
+ |
goto writerr; |
359 |
+ |
} |
360 |
|
if (fflush(stdout) == EOF) |
361 |
|
goto writerr; |
362 |
< |
pctdone = 100.0*(ourview.vresolu-ypos)/ourview.vresolu; |
362 |
> |
/* record progress */ |
363 |
> |
pctdone = 100.0*(vres-1-ypos)/vres; |
364 |
> |
if (ralrm > 0 && time((long *)0) >= tlastrept+ralrm) |
365 |
> |
report(); |
366 |
> |
#ifndef BSD |
367 |
> |
else |
368 |
> |
signal(SIGALRM, report); |
369 |
> |
#endif |
370 |
|
} |
371 |
< |
|
371 |
> |
/* clean up */ |
372 |
> |
signal(SIGALRM, SIG_IGN); |
373 |
> |
if (zfd != -1) { |
374 |
> |
if (write(zfd, (char *)zbar[0], hres*sizeof(float)) |
375 |
> |
< hres*sizeof(float)) |
376 |
> |
goto writerr; |
377 |
> |
if (close(zfd) == -1) |
378 |
> |
goto writerr; |
379 |
> |
for (i = 0; i <= psample; i++) |
380 |
> |
free((char *)zbar[i]); |
381 |
> |
} |
382 |
> |
fwritescan(scanbar[0], hres, stdout); |
383 |
> |
if (fflush(stdout) == EOF) |
384 |
> |
goto writerr; |
385 |
|
for (i = 0; i <= psample; i++) |
386 |
|
free((char *)scanbar[i]); |
387 |
+ |
if (sampdens != NULL) |
388 |
+ |
free(sampdens); |
389 |
+ |
pctdone = 100.0; |
390 |
+ |
if (ralrm > 0) |
391 |
+ |
report(); |
392 |
|
return; |
393 |
|
writerr: |
394 |
|
error(SYSTEM, "write error in render"); |
395 |
+ |
memerr: |
396 |
+ |
error(SYSTEM, "out of memory in render"); |
397 |
|
} |
398 |
|
|
399 |
|
|
400 |
< |
fillscanline(scanline, y, xstep) /* fill scan line at y */ |
401 |
< |
register COLOR *scanline; |
402 |
< |
int y, xstep; |
400 |
> |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
401 |
> |
register COLOR *scanline; |
402 |
> |
register float *zline; |
403 |
> |
register char *sd; |
404 |
> |
int xres, y, xstep; |
405 |
|
{ |
406 |
< |
int b = xstep; |
406 |
> |
static int nc = 0; /* number of calls */ |
407 |
> |
int bl = xstep, b = xstep; |
408 |
> |
double z; |
409 |
|
register int i; |
410 |
|
|
411 |
< |
pixvalue(scanline[0], 0, y); |
412 |
< |
|
413 |
< |
for (i = xstep; i <= ourview.hresolu; i += xstep) { |
414 |
< |
|
415 |
< |
pixvalue(scanline[i], i, y); |
416 |
< |
|
417 |
< |
b = fillsample(scanline+i-xstep, i-xstep, y, xstep, 0, b/2); |
411 |
> |
z = pixvalue(scanline[0], 0, y); |
412 |
> |
if (zline) zline[0] = z; |
413 |
> |
/* zig-zag start for quincunx pattern */ |
414 |
> |
for (i = ++nc & 1 ? xstep : xstep/2; i < xres-1+xstep; i += xstep) { |
415 |
> |
if (i >= xres) { |
416 |
> |
xstep += xres-1-i; |
417 |
> |
i = xres-1; |
418 |
> |
} |
419 |
> |
z = pixvalue(scanline[i], i, y); |
420 |
> |
if (zline) zline[i] = z; |
421 |
> |
if (sd) b = sd[0] > sd[1] ? sd[0] : sd[1]; |
422 |
> |
if (i <= xstep) |
423 |
> |
b = fillsample(scanline, zline, 0, y, i, 0, b/2); |
424 |
> |
else |
425 |
> |
b = fillsample(scanline+i-xstep, |
426 |
> |
zline ? zline+i-xstep : NULL, |
427 |
> |
i-xstep, y, xstep, 0, b/2); |
428 |
> |
if (sd) *sd++ = nc & 1 ? bl : b; |
429 |
> |
bl = b; |
430 |
|
} |
431 |
+ |
if (sd && nc & 1) *sd = bl; |
432 |
|
} |
433 |
|
|
434 |
|
|
435 |
< |
fillscanbar(scanbar, y, ysize) /* fill interior */ |
436 |
< |
register COLOR *scanbar[]; |
437 |
< |
int y, ysize; |
435 |
> |
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
436 |
> |
register COLOR *scanbar[]; |
437 |
> |
register float *zbar[]; |
438 |
> |
int xres, y, ysize; |
439 |
|
{ |
440 |
|
COLOR vline[MAXDIV+1]; |
441 |
+ |
float zline[MAXDIV+1]; |
442 |
|
int b = ysize; |
443 |
|
register int i, j; |
444 |
|
|
445 |
< |
for (i = 0; i < ourview.hresolu; i++) { |
445 |
> |
for (i = 0; i < xres; i++) { |
446 |
|
|
447 |
|
copycolor(vline[0], scanbar[0][i]); |
448 |
|
copycolor(vline[ysize], scanbar[ysize][i]); |
449 |
+ |
if (zbar[0]) { |
450 |
+ |
zline[0] = zbar[0][i]; |
451 |
+ |
zline[ysize] = zbar[ysize][i]; |
452 |
+ |
} |
453 |
|
|
454 |
< |
b = fillsample(vline, i, y, 0, ysize, b/2); |
454 |
> |
b = fillsample(vline, zbar[0] ? zline : NULL, |
455 |
> |
i, y, 0, ysize, b/2); |
456 |
|
|
457 |
|
for (j = 1; j < ysize; j++) |
458 |
|
copycolor(scanbar[j][i], vline[j]); |
459 |
+ |
if (zbar[0]) |
460 |
+ |
for (j = 1; j < ysize; j++) |
461 |
+ |
zbar[j][i] = zline[j]; |
462 |
|
} |
463 |
|
} |
464 |
|
|
465 |
|
|
466 |
|
int |
467 |
< |
fillsample(colline, x, y, xlen, ylen, b) /* fill interior points */ |
468 |
< |
register COLOR *colline; |
467 |
> |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
468 |
> |
register COLOR *colline; |
469 |
> |
register float *zline; |
470 |
|
int x, y; |
471 |
|
int xlen, ylen; |
472 |
|
int b; |
473 |
|
{ |
474 |
< |
double ratio; |
474 |
> |
double ratio; |
475 |
> |
double z; |
476 |
|
COLOR ctmp; |
477 |
|
int ncut; |
478 |
|
register int len; |
485 |
|
if (len <= 1) /* limit recursion */ |
486 |
|
return(0); |
487 |
|
|
488 |
< |
if (b > 0 || bigdiff(colline[0], colline[len], maxdiff)) { |
488 |
> |
if (b > 0 |
489 |
> |
|| (zline && 2.*fabs(zline[0]-zline[len]) > maxdiff*(zline[0]+zline[len])) |
490 |
> |
|| bigdiff(colline[0], colline[len], maxdiff)) { |
491 |
|
|
492 |
< |
pixvalue(colline[len>>1], x + (xlen>>1), y + (ylen>>1)); |
492 |
> |
z = pixvalue(colline[len>>1], x + (xlen>>1), y + (ylen>>1)); |
493 |
> |
if (zline) zline[len>>1] = z; |
494 |
|
ncut = 1; |
495 |
|
|
496 |
|
} else { /* interpolate */ |
498 |
|
copycolor(colline[len>>1], colline[len]); |
499 |
|
ratio = (double)(len>>1) / len; |
500 |
|
scalecolor(colline[len>>1], ratio); |
501 |
< |
copycolor(ctmp, colline[0]); |
501 |
> |
if (zline) zline[len>>1] = zline[len] * ratio; |
502 |
|
ratio = 1.0 - ratio; |
503 |
+ |
copycolor(ctmp, colline[0]); |
504 |
|
scalecolor(ctmp, ratio); |
505 |
|
addcolor(colline[len>>1], ctmp); |
506 |
+ |
if (zline) zline[len>>1] += zline[0] * ratio; |
507 |
|
ncut = 0; |
508 |
|
} |
509 |
|
/* recurse */ |
510 |
< |
ncut += fillsample(colline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
510 |
> |
ncut += fillsample(colline, zline, x, y, xlen>>1, ylen>>1, (b-1)/2); |
511 |
|
|
512 |
< |
ncut += fillsample(colline + (len>>1), x + (xlen>>1), y + (ylen>>1), |
513 |
< |
xlen - (xlen>>1), ylen - (ylen>>1), b/2); |
512 |
> |
ncut += fillsample(colline+(len>>1), zline ? zline+(len>>1) : NULL, |
513 |
> |
x+(xlen>>1), y+(ylen>>1), |
514 |
> |
xlen-(xlen>>1), ylen-(ylen>>1), b/2); |
515 |
|
|
516 |
|
return(ncut); |
517 |
|
} |
518 |
|
|
519 |
|
|
520 |
+ |
double |
521 |
|
pixvalue(col, x, y) /* compute pixel value */ |
522 |
|
COLOR col; /* returned color */ |
523 |
|
int x, y; /* pixel position */ |
524 |
|
{ |
525 |
< |
static RAY thisray; /* our ray for this pixel */ |
525 |
> |
static RAY thisray; |
526 |
|
|
527 |
< |
rayview(thisray.rorg, thisray.rdir, &ourview, |
528 |
< |
x + pixjitter(), y + pixjitter()); |
527 |
> |
if (viewray(thisray.rorg, thisray.rdir, &ourview, |
528 |
> |
(x+pixjitter())/hres, (y+pixjitter())/vres) < 0) { |
529 |
> |
setcolor(col, 0.0, 0.0, 0.0); |
530 |
> |
return(0.0); |
531 |
> |
} |
532 |
|
|
533 |
|
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
534 |
< |
|
534 |
> |
|
535 |
> |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
536 |
> |
|
537 |
|
rayvalue(&thisray); /* trace ray */ |
538 |
|
|
539 |
|
copycolor(col, thisray.rcol); /* return color */ |
540 |
+ |
|
541 |
+ |
return(thisray.rt); /* return distance */ |
542 |
|
} |
543 |
|
|
544 |
|
|
552 |
|
|
553 |
|
if (oldfile == NULL) |
554 |
|
return(0); |
555 |
< |
else if ((fp = fopen(oldfile, "r")) == NULL) { |
555 |
> |
|
556 |
> |
if ((fp = fopen(oldfile, "r")) == NULL) { |
557 |
|
sprintf(errmsg, "cannot open recover file \"%s\"", oldfile); |
558 |
|
error(WARNING, errmsg); |
559 |
|
return(0); |
560 |
|
} |
561 |
+ |
#ifdef MSDOS |
562 |
+ |
setmode(fileno(fp), O_BINARY); |
563 |
+ |
#endif |
564 |
|
/* discard header */ |
565 |
< |
getheader(fp, NULL); |
565 |
> |
getheader(fp, NULL, NULL); |
566 |
|
/* get picture size */ |
567 |
< |
if (fscanf(fp, "-Y %d +X %d\n", &y, &x) != 2) { |
567 |
> |
if (!fscnresolu(&x, &y, fp)) { |
568 |
|
sprintf(errmsg, "bad recover file \"%s\"", oldfile); |
569 |
|
error(WARNING, errmsg); |
570 |
|
fclose(fp); |
571 |
|
return(0); |
572 |
|
} |
573 |
|
|
574 |
< |
if (x != ourview.hresolu || y != ourview.vresolu) { |
574 |
> |
if (x != hres || y != vres) { |
575 |
|
sprintf(errmsg, "resolution mismatch in recover file \"%s\"", |
576 |
|
oldfile); |
577 |
|
error(USER, errmsg); |
276 |
– |
return(0); |
578 |
|
} |
579 |
|
|
580 |
< |
scanline = (COLR *)malloc(ourview.hresolu*sizeof(COLR)); |
580 |
> |
scanline = (COLR *)malloc(hres*sizeof(COLR)); |
581 |
|
if (scanline == NULL) |
582 |
|
error(SYSTEM, "out of memory in salvage"); |
583 |
< |
for (y = 0; y < ourview.vresolu; y++) { |
584 |
< |
if (freadcolrs(scanline, ourview.hresolu, fp) < 0) |
583 |
> |
for (y = 0; y < vres; y++) { |
584 |
> |
if (freadcolrs(scanline, hres, fp) < 0) |
585 |
|
break; |
586 |
< |
if (fwritecolrs(scanline, ourview.hresolu, stdout) < 0) |
586 |
> |
if (fwritecolrs(scanline, hres, stdout) < 0) |
587 |
|
goto writerr; |
588 |
|
} |
589 |
|
if (fflush(stdout) == EOF) |
593 |
|
unlink(oldfile); |
594 |
|
return(y); |
595 |
|
writerr: |
596 |
< |
error(SYSTEM, "write error in salvage"); |
596 |
> |
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
597 |
> |
error(SYSTEM, errmsg); |
598 |
> |
} |
599 |
> |
|
600 |
> |
|
601 |
> |
int |
602 |
> |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
603 |
> |
register int x, y; |
604 |
> |
int xres, yres; |
605 |
> |
{ |
606 |
> |
x -= y; |
607 |
> |
while (x < 0) |
608 |
> |
x += xres; |
609 |
> |
return((((x>>2)*yres + y) << 2) + (x & 3)); |
610 |
|
} |