1 |
– |
/* Copyright (c) 1996 Regents of the University of California */ |
2 |
– |
|
1 |
|
#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
|
#endif |
6 |
– |
|
4 |
|
/* |
5 |
|
* rpict.c - routines and variables for picture generation. |
6 |
|
*/ |
7 |
|
|
8 |
+ |
#include "copyright.h" |
9 |
+ |
|
10 |
|
#include "ray.h" |
11 |
|
|
12 |
|
#include <sys/types.h> |
27 |
|
|
28 |
|
#include "view.h" |
29 |
|
|
31 |
– |
#include "resolu.h" |
32 |
– |
|
30 |
|
#include "random.h" |
31 |
|
|
32 |
|
#include "paths.h" |
37 |
|
#define SIGCONT SIGIO |
38 |
|
#endif |
39 |
|
|
40 |
+ |
CUBE thescene; /* our scene */ |
41 |
+ |
OBJECT nsceneobjs; /* number of objects in our scene */ |
42 |
+ |
|
43 |
|
int dimlist[MAXDIM]; /* sampling dimensions */ |
44 |
|
int ndims = 0; /* number of sampling dimensions */ |
45 |
|
int samplendx; /* sample index number */ |
46 |
|
|
47 |
+ |
extern void ambnotify(); |
48 |
+ |
void (*addobjnotify[])() = {ambnotify, NULL}; |
49 |
+ |
|
50 |
|
VIEW ourview = STDVIEW; /* view parameters */ |
51 |
|
int hresolu = 512; /* horizontal resolution */ |
52 |
|
int vresolu = 512; /* vertical resolution */ |
58 |
|
|
59 |
|
double mblur = 0.; /* motion blur parameter */ |
60 |
|
|
61 |
+ |
void (*trace)() = NULL; /* trace call */ |
62 |
+ |
|
63 |
+ |
int do_irrad = 0; /* compute irradiance? */ |
64 |
+ |
|
65 |
|
double dstrsrc = 0.0; /* square source distribution */ |
66 |
|
double shadthresh = .05; /* shadow threshold */ |
67 |
|
double shadcert = .5; /* shadow certainty */ |
83 |
|
int maxdepth = 6; /* maximum recursion depth */ |
84 |
|
double minweight = 5e-3; /* minimum ray weight */ |
85 |
|
|
86 |
+ |
char *ambfile = NULL; /* ambient file name */ |
87 |
|
COLOR ambval = BLKCOLOR; /* ambient value */ |
88 |
|
int ambvwt = 0; /* initial weight for ambient value */ |
89 |
|
double ambacc = 0.2; /* ambient accuracy */ |
94 |
|
char *amblist[128]; /* ambient include/exclude list */ |
95 |
|
int ambincl = -1; /* include == 1, exclude == 0 */ |
96 |
|
|
89 |
– |
#ifdef MSDOS |
90 |
– |
int ralrm = 60; /* seconds between reports */ |
91 |
– |
#else |
97 |
|
int ralrm = 0; /* seconds between reports */ |
93 |
– |
#endif |
98 |
|
|
99 |
|
double pctdone = 0.0; /* percentage done */ |
96 |
– |
|
100 |
|
time_t tlastrept = 0L; /* time at last report */ |
101 |
+ |
time_t tstart; /* starting time */ |
102 |
|
|
99 |
– |
extern time_t tstart; /* starting time */ |
100 |
– |
|
101 |
– |
extern unsigned long nrays; /* number of rays traced */ |
102 |
– |
|
103 |
|
#define MAXDIV 16 /* maximum sample size */ |
104 |
|
|
105 |
|
#define pixjitter() (.5+dstrpix*(.5-frandom())) |
110 |
|
|
111 |
|
extern char *mktemp(); |
112 |
|
|
113 |
+ |
void report(); |
114 |
+ |
|
115 |
|
double pixvalue(); |
116 |
|
|
117 |
|
#ifdef NIX |
130 |
|
#endif |
131 |
|
|
132 |
|
|
133 |
+ |
void |
134 |
|
quit(code) /* quit program */ |
135 |
|
int code; |
136 |
|
{ |
137 |
|
if (code) /* report status */ |
138 |
|
report(); |
139 |
+ |
#ifndef NIX |
140 |
|
headclean(); /* delete header file */ |
141 |
|
pfclean(); /* clean up persist files */ |
142 |
+ |
#endif |
143 |
|
exit(code); |
144 |
|
} |
145 |
|
|
146 |
|
|
147 |
|
#ifndef NIX |
148 |
+ |
void |
149 |
|
report() /* report progress */ |
150 |
|
{ |
151 |
|
extern char *myhostname(); |
186 |
|
#endif |
187 |
|
} |
188 |
|
#else |
189 |
+ |
void |
190 |
|
report() /* report progress */ |
191 |
|
{ |
192 |
|
tlastrept = time((time_t *)NULL); |
197 |
|
#endif |
198 |
|
|
199 |
|
|
200 |
+ |
void |
201 |
|
rpict(seq, pout, zout, prvr) /* generate image(s) */ |
202 |
|
int seq; |
203 |
|
char *pout, *zout, *prvr; |
240 |
|
for ( ; seq < rn; seq++) |
241 |
|
if (nextview(stdin) == EOF) |
242 |
|
error(USER, "unexpected EOF on view input"); |
243 |
+ |
setview(&ourview); |
244 |
|
prvr = fbuf; /* mark for renaming */ |
245 |
|
} |
246 |
|
if (pout != NULL & prvr != NULL) { |
282 |
|
fbuf); |
283 |
|
error(USER, errmsg); |
284 |
|
} |
285 |
+ |
setview(&ourview); |
286 |
|
continue; /* don't clobber */ |
287 |
|
} |
288 |
|
if (freopen(fbuf, "w", stdout) == NULL) { |
298 |
|
hres = hresolu; vres = vresolu; pa = pixaspect; |
299 |
|
if (prvr != NULL) |
300 |
|
if (viewfile(prvr, &ourview, &rs) <= 0 |
301 |
< |
|| rs.or != PIXSTANDARD) { |
301 |
> |
|| rs.rt != PIXSTANDARD) { |
302 |
|
sprintf(errmsg, |
303 |
|
"cannot recover view parameters from \"%s\"", prvr); |
304 |
|
error(WARNING, errmsg); |
356 |
|
render(zfile, oldfile) /* render the scene */ |
357 |
|
char *zfile, *oldfile; |
358 |
|
{ |
349 |
– |
extern long lseek(); |
359 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
360 |
|
float *zbar[MAXDIV+1]; /* z values */ |
361 |
|
char *sampdens; /* previous sample density */ |
366 |
|
COLOR *colptr; |
367 |
|
float *zptr; |
368 |
|
register int i; |
369 |
+ |
/* check for empty image */ |
370 |
+ |
if (hres <= 0 || vres <= 0) { |
371 |
+ |
error(WARNING, "empty output picture"); |
372 |
+ |
fprtresolu(0, 0, stdout); |
373 |
+ |
return; |
374 |
+ |
} |
375 |
|
/* allocate scanlines */ |
376 |
|
for (i = 0; i <= psample; i++) { |
377 |
|
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
382 |
|
ystep = (psample*99+70)/140; |
383 |
|
if (hstep > 2) { |
384 |
|
i = hres/hstep + 2; |
385 |
< |
if ((sampdens = malloc(i)) == NULL) |
385 |
> |
if ((sampdens = (char *)malloc(i)) == NULL) |
386 |
|
goto memerr; |
387 |
|
while (i--) |
388 |
|
sampdens[i] = hstep; |
414 |
|
if (i >= vres) |
415 |
|
goto alldone; |
416 |
|
if (zfd != -1 && i > 0 && |
417 |
< |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
417 |
> |
lseek(zfd, (off_t)i*hres*sizeof(float), 0) < 0) |
418 |
|
error(SYSTEM, "z-file seek error in render"); |
419 |
|
pctdone = 100.0*i/vres; |
420 |
|
if (ralrm > 0) /* report init stats */ |
483 |
|
if (close(zfd) == -1) |
484 |
|
goto writerr; |
485 |
|
for (i = 0; i <= psample; i++) |
486 |
< |
free((char *)zbar[i]); |
486 |
> |
free((void *)zbar[i]); |
487 |
|
} |
488 |
|
for (i = 0; i <= psample; i++) |
489 |
< |
free((char *)scanbar[i]); |
489 |
> |
free((void *)scanbar[i]); |
490 |
|
if (sampdens != NULL) |
491 |
|
free(sampdens); |
492 |
|
pctdone = 100.0; |
709 |
|
} |
710 |
|
if (fflush(stdout) == EOF) |
711 |
|
goto writerr; |
712 |
< |
free((char *)scanline); |
712 |
> |
free((void *)scanline); |
713 |
|
fclose(fp); |
714 |
|
unlink(oldfile); |
715 |
|
return(y); |