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/* Copyright (c) 1995 Regents of the University of California */ |
2 |
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|
1 |
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
6 |
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|
4 |
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/* |
5 |
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* rpict.c - routines and variables for picture generation. |
6 |
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*/ |
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|
8 |
< |
#include "ray.h" |
8 |
> |
#include "copyright.h" |
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|
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#include <sys/types.h> |
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|
12 |
< |
#ifndef NIX |
13 |
< |
#ifdef BSD |
14 |
< |
#include <sys/time.h> |
15 |
< |
#include <sys/resource.h> |
12 |
> |
#include "platform.h" |
13 |
> |
#ifdef NON_POSIX |
14 |
> |
#ifdef MINGW |
15 |
> |
#include <sys/time.h> |
16 |
> |
#endif |
17 |
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#else |
18 |
< |
#include <sys/times.h> |
19 |
< |
#include <unistd.h> |
18 |
> |
#ifdef BSD |
19 |
> |
#include <sys/time.h> |
20 |
> |
#include <sys/resource.h> |
21 |
> |
#else |
22 |
> |
#include <sys/times.h> |
23 |
> |
#include <unistd.h> |
24 |
> |
#endif |
25 |
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#endif |
23 |
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#endif |
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|
27 |
< |
extern time_t time(); |
26 |
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|
27 |
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#include <time.h> |
28 |
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#include <signal.h> |
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|
30 |
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#include "ray.h" |
31 |
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#include "paths.h" |
32 |
+ |
#include "ambient.h" |
33 |
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#include "view.h" |
30 |
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|
31 |
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#include "resolu.h" |
32 |
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|
34 |
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#include "random.h" |
34 |
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|
35 |
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#include "paths.h" |
36 |
+ |
#include "rtmisc.h" /* myhostname() */ |
37 |
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|
38 |
+ |
|
39 |
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#define RFTEMPLATE "rfXXXXXX" |
40 |
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|
41 |
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#ifndef SIGCONT |
42 |
+ |
#ifdef SIGIO /* XXX can we live without this? */ |
43 |
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#define SIGCONT SIGIO |
44 |
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#endif |
45 |
+ |
#endif |
46 |
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|
47 |
+ |
CUBE thescene; /* our scene */ |
48 |
+ |
OBJECT nsceneobjs; /* number of objects in our scene */ |
49 |
+ |
|
50 |
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int dimlist[MAXDIM]; /* sampling dimensions */ |
51 |
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int ndims = 0; /* number of sampling dimensions */ |
52 |
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int samplendx; /* sample index number */ |
53 |
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|
54 |
+ |
void (*addobjnotify[])() = {ambnotify, NULL}; |
55 |
+ |
|
56 |
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VIEW ourview = STDVIEW; /* view parameters */ |
57 |
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int hresolu = 512; /* horizontal resolution */ |
58 |
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int vresolu = 512; /* vertical resolution */ |
62 |
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double maxdiff = .05; /* max. difference for interpolation */ |
63 |
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double dstrpix = 0.67; /* square pixel distribution */ |
64 |
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|
65 |
+ |
double mblur = 0.; /* motion blur parameter */ |
66 |
+ |
|
67 |
+ |
double dblur = 0.; /* depth-of-field blur parameter */ |
68 |
+ |
|
69 |
+ |
void (*trace)() = NULL; /* trace call */ |
70 |
+ |
|
71 |
+ |
int do_irrad = 0; /* compute irradiance? */ |
72 |
+ |
|
73 |
+ |
int rand_samp = 0; /* pure Monte Carlo sampling? */ |
74 |
+ |
|
75 |
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double dstrsrc = 0.0; /* square source distribution */ |
76 |
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double shadthresh = .05; /* shadow threshold */ |
77 |
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double shadcert = .5; /* shadow certainty */ |
81 |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
82 |
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|
83 |
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COLOR cextinction = BLKCOLOR; /* global extinction coefficient */ |
84 |
< |
double salbedo = 0.; /* global scattering albedo */ |
84 |
> |
COLOR salbedo = BLKCOLOR; /* global scattering albedo */ |
85 |
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double seccg = 0.; /* global scattering eccentricity */ |
86 |
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double ssampdist = 0.; /* scatter sampling distance */ |
87 |
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|
90 |
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|
91 |
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int backvis = 1; /* back face visibility */ |
92 |
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|
93 |
< |
int maxdepth = 6; /* maximum recursion depth */ |
94 |
< |
double minweight = 5e-3; /* minimum ray weight */ |
93 |
> |
int maxdepth = 7; /* maximum recursion depth */ |
94 |
> |
double minweight = 1e-3; /* minimum ray weight */ |
95 |
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|
96 |
+ |
char *ambfile = NULL; /* ambient file name */ |
97 |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
98 |
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int ambvwt = 0; /* initial weight for ambient value */ |
99 |
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double ambacc = 0.2; /* ambient accuracy */ |
100 |
< |
int ambres = 32; /* ambient resolution */ |
101 |
< |
int ambdiv = 128; /* ambient divisions */ |
102 |
< |
int ambssamp = 0; /* ambient super-samples */ |
100 |
> |
int ambres = 64; /* ambient resolution */ |
101 |
> |
int ambdiv = 512; /* ambient divisions */ |
102 |
> |
int ambssamp = 128; /* ambient super-samples */ |
103 |
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int ambounce = 0; /* ambient bounces */ |
104 |
< |
char *amblist[128]; /* ambient include/exclude list */ |
104 |
> |
char *amblist[AMBLLEN]; /* ambient include/exclude list */ |
105 |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
106 |
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|
87 |
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#ifdef MSDOS |
88 |
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int ralrm = 60; /* seconds between reports */ |
89 |
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#else |
107 |
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int ralrm = 0; /* seconds between reports */ |
91 |
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#endif |
108 |
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|
109 |
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double pctdone = 0.0; /* percentage done */ |
94 |
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|
110 |
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time_t tlastrept = 0L; /* time at last report */ |
111 |
+ |
time_t tstart; /* starting time */ |
112 |
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|
97 |
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extern time_t tstart; /* starting time */ |
98 |
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|
99 |
– |
extern unsigned long nrays; /* number of rays traced */ |
100 |
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|
113 |
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#define MAXDIV 16 /* maximum sample size */ |
114 |
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|
115 |
|
#define pixjitter() (.5+dstrpix*(.5-frandom())) |
116 |
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|
117 |
< |
static int hres, vres; /* resolution for this frame */ |
117 |
> |
int hres, vres; /* resolution for this frame */ |
118 |
|
|
119 |
< |
extern char *mktemp(); |
119 |
> |
static VIEW lastview; /* the previous view input */ |
120 |
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|
121 |
< |
double pixvalue(); |
121 |
> |
static void report(int); |
122 |
> |
static int nextview(FILE *fp); |
123 |
> |
static void render(char *zfile, char *oldfile); |
124 |
> |
static void fillscanline(COLOR *scanline, float *zline, char *sd, int xres, |
125 |
> |
int y, int xstep); |
126 |
> |
static void fillscanbar(COLOR *scanbar[], float *zbar[], int xres, |
127 |
> |
int y, int ysize); |
128 |
> |
static int fillsample(COLOR *colline, float *zline, int x, int y, |
129 |
> |
int xlen, int ylen, int b); |
130 |
> |
static double pixvalue(COLOR col, int x, int y); |
131 |
> |
static int salvage(char *oldfile); |
132 |
> |
static int pixnumber(int x, int y, int xres, int yres); |
133 |
|
|
134 |
< |
#ifdef NIX |
135 |
< |
#define file_exists(f) (access(f,F_OK)==0) |
136 |
< |
#else |
134 |
> |
|
135 |
> |
|
136 |
> |
#ifdef RHAS_STAT |
137 |
|
#include <sys/types.h> |
138 |
|
#include <sys/stat.h> |
139 |
|
int |
144 |
|
if (stat(fname, &sbuf) < 0) return(0); |
145 |
|
return((sbuf.st_mode & S_IFREG) != 0); |
146 |
|
} |
147 |
+ |
#else |
148 |
+ |
#define file_exists(f) (access(f,F_OK)==0) |
149 |
|
#endif |
150 |
|
|
151 |
|
|
152 |
+ |
void |
153 |
|
quit(code) /* quit program */ |
154 |
|
int code; |
155 |
|
{ |
156 |
|
if (code) /* report status */ |
157 |
< |
report(); |
157 |
> |
report(0); |
158 |
> |
#ifndef NON_POSIX |
159 |
|
headclean(); /* delete header file */ |
160 |
|
pfclean(); /* clean up persist files */ |
161 |
+ |
#endif |
162 |
|
exit(code); |
163 |
|
} |
164 |
|
|
165 |
|
|
166 |
< |
#ifndef NIX |
167 |
< |
report() /* report progress */ |
166 |
> |
#ifndef NON_POSIX |
167 |
> |
static void |
168 |
> |
report(int dummy) /* report progress */ |
169 |
|
{ |
141 |
– |
extern char *myhostname(); |
170 |
|
double u, s; |
171 |
|
#ifdef BSD |
172 |
|
struct rusage rubuf; |
199 |
|
nrays, pctdone, u/3600., s/3600., |
200 |
|
(tlastrept-tstart)/3600., myhostname()); |
201 |
|
eputs(errmsg); |
202 |
< |
#ifndef BSD |
202 |
> |
#ifdef SIGCONT |
203 |
|
signal(SIGCONT, report); |
204 |
|
#endif |
205 |
|
} |
206 |
|
#else |
207 |
< |
report() /* report progress */ |
207 |
> |
static void |
208 |
> |
report(int dummy) /* report progress */ |
209 |
|
{ |
210 |
|
tlastrept = time((time_t *)NULL); |
211 |
|
sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
215 |
|
#endif |
216 |
|
|
217 |
|
|
218 |
< |
rpict(seq, pout, zout, prvr) /* generate image(s) */ |
219 |
< |
int seq; |
220 |
< |
char *pout, *zout, *prvr; |
218 |
> |
extern void |
219 |
> |
rpict( /* generate image(s) */ |
220 |
> |
int seq, |
221 |
> |
char *pout, |
222 |
> |
char *zout, |
223 |
> |
char *prvr |
224 |
> |
) |
225 |
|
/* |
226 |
|
* If seq is greater than zero, then we will render a sequence of |
227 |
|
* images based on view parameter strings read from the standard input. |
234 |
|
* sequenced file naming. |
235 |
|
*/ |
236 |
|
{ |
204 |
– |
extern char *rindex(), *strncpy(), *strcat(), *strcpy(); |
237 |
|
char fbuf[128], fbuf2[128]; |
238 |
|
int npicts; |
239 |
|
register char *cp; |
260 |
|
for ( ; seq < rn; seq++) |
261 |
|
if (nextview(stdin) == EOF) |
262 |
|
error(USER, "unexpected EOF on view input"); |
263 |
+ |
setview(&ourview); |
264 |
|
prvr = fbuf; /* mark for renaming */ |
265 |
|
} |
266 |
< |
if (pout != NULL & prvr != NULL) { |
266 |
> |
if ((pout != NULL) & (prvr != NULL)) { |
267 |
|
sprintf(fbuf, pout, seq); |
268 |
|
if (!strcmp(prvr, fbuf)) { /* rename */ |
269 |
|
strcpy(fbuf2, fbuf); |
273 |
|
cp--; |
274 |
|
strcpy(cp, RFTEMPLATE); |
275 |
|
prvr = mktemp(fbuf2); |
276 |
< |
if (rename(fbuf, prvr) < 0) |
276 |
> |
if (rename(fbuf, prvr) < 0) { |
277 |
|
if (errno == ENOENT) { /* ghost file */ |
278 |
|
sprintf(errmsg, |
279 |
|
"new output file \"%s\"", |
286 |
|
fbuf, prvr); |
287 |
|
error(SYSTEM, errmsg); |
288 |
|
} |
289 |
+ |
} |
290 |
|
} |
291 |
|
} |
292 |
|
npicts = 0; /* render sequence */ |
303 |
|
fbuf); |
304 |
|
error(USER, errmsg); |
305 |
|
} |
306 |
+ |
setview(&ourview); |
307 |
|
continue; /* don't clobber */ |
308 |
|
} |
309 |
|
if (freopen(fbuf, "w", stdout) == NULL) { |
311 |
|
"cannot open output file \"%s\"", fbuf); |
312 |
|
error(SYSTEM, errmsg); |
313 |
|
} |
314 |
< |
#ifdef MSDOS |
280 |
< |
setmode(fileno(stdout), O_BINARY); |
281 |
< |
#endif |
314 |
> |
SET_FILE_BINARY(stdout); |
315 |
|
dupheader(); |
316 |
|
} |
317 |
|
hres = hresolu; vres = vresolu; pa = pixaspect; |
318 |
< |
if (prvr != NULL) |
319 |
< |
if (viewfile(prvr, &ourview, &rs) <= 0 |
287 |
< |
|| rs.or != PIXSTANDARD) { |
318 |
> |
if (prvr != NULL) { |
319 |
> |
if (viewfile(prvr, &ourview, &rs) <= 0) { |
320 |
|
sprintf(errmsg, |
321 |
|
"cannot recover view parameters from \"%s\"", prvr); |
322 |
|
error(WARNING, errmsg); |
325 |
|
hres = scanlen(&rs); |
326 |
|
vres = numscans(&rs); |
327 |
|
} |
328 |
+ |
} |
329 |
|
if ((cp = setview(&ourview)) != NULL) |
330 |
|
error(USER, cp); |
331 |
|
normaspect(viewaspect(&ourview), &pa, &hres, &vres); |
343 |
|
putchar('\n'); |
344 |
|
if (pa < .99 || pa > 1.01) |
345 |
|
fputaspect(pa, stdout); |
346 |
+ |
fputnow(stdout); |
347 |
|
fputformat(COLRFMT, stdout); |
348 |
|
putchar('\n'); |
349 |
|
if (zout != NULL) |
360 |
|
} |
361 |
|
|
362 |
|
|
363 |
< |
nextview(fp) /* get next view from fp */ |
364 |
< |
FILE *fp; |
363 |
> |
static int |
364 |
> |
nextview( /* get next view from fp */ |
365 |
> |
FILE *fp |
366 |
> |
) |
367 |
|
{ |
368 |
|
char linebuf[256]; |
369 |
|
|
370 |
+ |
lastview = ourview; |
371 |
|
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) |
372 |
|
if (isview(linebuf) && sscanview(&ourview, linebuf) > 0) |
373 |
|
return(0); |
375 |
|
} |
376 |
|
|
377 |
|
|
378 |
< |
render(zfile, oldfile) /* render the scene */ |
379 |
< |
char *zfile, *oldfile; |
378 |
> |
static void |
379 |
> |
render( /* render the scene */ |
380 |
> |
char *zfile, |
381 |
> |
char *oldfile |
382 |
> |
) |
383 |
|
{ |
344 |
– |
extern long lseek(); |
384 |
|
COLOR *scanbar[MAXDIV+1]; /* scanline arrays of pixel values */ |
385 |
|
float *zbar[MAXDIV+1]; /* z values */ |
386 |
|
char *sampdens; /* previous sample density */ |
391 |
|
COLOR *colptr; |
392 |
|
float *zptr; |
393 |
|
register int i; |
394 |
+ |
/* check for empty image */ |
395 |
+ |
if (hres <= 0 || vres <= 0) { |
396 |
+ |
error(WARNING, "empty output picture"); |
397 |
+ |
fprtresolu(0, 0, stdout); |
398 |
+ |
return; |
399 |
+ |
} |
400 |
|
/* allocate scanlines */ |
401 |
|
for (i = 0; i <= psample; i++) { |
402 |
|
scanbar[i] = (COLOR *)malloc(hres*sizeof(COLOR)); |
407 |
|
ystep = (psample*99+70)/140; |
408 |
|
if (hstep > 2) { |
409 |
|
i = hres/hstep + 2; |
410 |
< |
if ((sampdens = malloc(i)) == NULL) |
410 |
> |
if ((sampdens = (char *)malloc(i)) == NULL) |
411 |
|
goto memerr; |
412 |
|
while (i--) |
413 |
|
sampdens[i] = hstep; |
419 |
|
sprintf(errmsg, "cannot open z-file \"%s\"", zfile); |
420 |
|
error(SYSTEM, errmsg); |
421 |
|
} |
422 |
< |
#ifdef MSDOS |
378 |
< |
setmode(zfd, O_BINARY); |
379 |
< |
#endif |
422 |
> |
SET_FD_BINARY(zfd); |
423 |
|
for (i = 0; i <= psample; i++) { |
424 |
|
zbar[i] = (float *)malloc(hres*sizeof(float)); |
425 |
|
if (zbar[i] == NULL) |
437 |
|
if (i >= vres) |
438 |
|
goto alldone; |
439 |
|
if (zfd != -1 && i > 0 && |
440 |
< |
lseek(zfd, (long)i*hres*sizeof(float), 0) == -1) |
440 |
> |
lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
441 |
|
error(SYSTEM, "z-file seek error in render"); |
442 |
|
pctdone = 100.0*i/vres; |
443 |
|
if (ralrm > 0) /* report init stats */ |
444 |
< |
report(); |
445 |
< |
#ifndef BSD |
444 |
> |
report(0); |
445 |
> |
#ifdef SIGCONT |
446 |
|
else |
404 |
– |
#endif |
447 |
|
signal(SIGCONT, report); |
448 |
< |
ypos = vres-1 - i; |
448 |
> |
#endif |
449 |
> |
ypos = vres-1 - i; /* initialize sampling */ |
450 |
> |
if (directvis) |
451 |
> |
init_drawsources(psample); |
452 |
|
fillscanline(scanbar[0], zbar[0], sampdens, hres, ypos, hstep); |
453 |
|
/* compute scanlines */ |
454 |
|
for (ypos -= ystep; ypos > -ystep; ypos -= ystep) { |
468 |
|
hres, ypos, hstep); |
469 |
|
/* fill bar */ |
470 |
|
fillscanbar(scanbar, zbar, hres, ypos, ystep); |
471 |
< |
/* add bitty sources */ |
472 |
< |
drawsources(&ourview, hres, vres, scanbar, zbar, |
428 |
< |
0, hres, ypos, ystep, psample); |
471 |
> |
if (directvis) /* add bitty sources */ |
472 |
> |
drawsources(scanbar, zbar, 0, hres, ypos, ystep); |
473 |
|
/* write it out */ |
474 |
< |
#ifndef BSD |
474 |
> |
#ifdef SIGCONT |
475 |
|
signal(SIGCONT, SIG_IGN); /* don't interrupt writes */ |
476 |
|
#endif |
477 |
|
for (i = ystep; i > 0; i--) { |
487 |
|
/* record progress */ |
488 |
|
pctdone = 100.0*(vres-1-ypos)/vres; |
489 |
|
if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm) |
490 |
< |
report(); |
491 |
< |
#ifndef BSD |
490 |
> |
report(0); |
491 |
> |
#ifdef SIGCONT |
492 |
|
else |
493 |
|
signal(SIGCONT, report); |
494 |
|
#endif |
495 |
|
} |
496 |
|
/* clean up */ |
497 |
+ |
#ifdef SIGCONT |
498 |
|
signal(SIGCONT, SIG_IGN); |
499 |
+ |
#endif |
500 |
|
if (zfd != -1 && write(zfd, (char *)zbar[0], hres*sizeof(float)) |
501 |
|
< hres*sizeof(float)) |
502 |
|
goto writerr; |
508 |
|
if (close(zfd) == -1) |
509 |
|
goto writerr; |
510 |
|
for (i = 0; i <= psample; i++) |
511 |
< |
free((char *)zbar[i]); |
511 |
> |
free((void *)zbar[i]); |
512 |
|
} |
513 |
|
for (i = 0; i <= psample; i++) |
514 |
< |
free((char *)scanbar[i]); |
514 |
> |
free((void *)scanbar[i]); |
515 |
|
if (sampdens != NULL) |
516 |
|
free(sampdens); |
517 |
|
pctdone = 100.0; |
518 |
|
if (ralrm > 0) |
519 |
< |
report(); |
519 |
> |
report(0); |
520 |
> |
#ifdef SIGCONT |
521 |
|
signal(SIGCONT, SIG_DFL); |
522 |
+ |
#endif |
523 |
|
return; |
524 |
|
writerr: |
525 |
|
error(SYSTEM, "write error in render"); |
528 |
|
} |
529 |
|
|
530 |
|
|
531 |
< |
fillscanline(scanline, zline, sd, xres, y, xstep) /* fill scan at y */ |
532 |
< |
register COLOR *scanline; |
533 |
< |
register float *zline; |
534 |
< |
register char *sd; |
535 |
< |
int xres, y, xstep; |
531 |
> |
static void |
532 |
> |
fillscanline( /* fill scan at y */ |
533 |
> |
register COLOR *scanline, |
534 |
> |
register float *zline, |
535 |
> |
register char *sd, |
536 |
> |
int xres, |
537 |
> |
int y, |
538 |
> |
int xstep |
539 |
> |
) |
540 |
|
{ |
541 |
|
static int nc = 0; /* number of calls */ |
542 |
|
int bl = xstep, b = xstep; |
567 |
|
} |
568 |
|
|
569 |
|
|
570 |
< |
fillscanbar(scanbar, zbar, xres, y, ysize) /* fill interior */ |
571 |
< |
register COLOR *scanbar[]; |
572 |
< |
register float *zbar[]; |
573 |
< |
int xres, y, ysize; |
570 |
> |
static void |
571 |
> |
fillscanbar( /* fill interior */ |
572 |
> |
register COLOR *scanbar[], |
573 |
> |
register float *zbar[], |
574 |
> |
int xres, |
575 |
> |
int y, |
576 |
> |
int ysize |
577 |
> |
) |
578 |
|
{ |
579 |
|
COLOR vline[MAXDIV+1]; |
580 |
|
float zline[MAXDIV+1]; |
600 |
|
} |
601 |
|
|
602 |
|
|
603 |
< |
int |
604 |
< |
fillsample(colline, zline, x, y, xlen, ylen, b) /* fill interior points */ |
605 |
< |
register COLOR *colline; |
606 |
< |
register float *zline; |
607 |
< |
int x, y; |
608 |
< |
int xlen, ylen; |
609 |
< |
int b; |
603 |
> |
static int |
604 |
> |
fillsample( /* fill interior points */ |
605 |
> |
register COLOR *colline, |
606 |
> |
register float *zline, |
607 |
> |
int x, |
608 |
> |
int y, |
609 |
> |
int xlen, |
610 |
> |
int ylen, |
611 |
> |
int b |
612 |
> |
) |
613 |
|
{ |
614 |
|
double ratio; |
615 |
|
double z; |
656 |
|
} |
657 |
|
|
658 |
|
|
659 |
< |
double |
660 |
< |
pixvalue(col, x, y) /* compute pixel value */ |
661 |
< |
COLOR col; /* returned color */ |
662 |
< |
int x, y; /* pixel position */ |
659 |
> |
static double |
660 |
> |
pixvalue( /* compute pixel value */ |
661 |
> |
COLOR col, /* returned color */ |
662 |
> |
int x, /* pixel position */ |
663 |
> |
int y |
664 |
> |
) |
665 |
|
{ |
666 |
< |
static RAY thisray; |
667 |
< |
|
668 |
< |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, &ourview, |
669 |
< |
(x+pixjitter())/hres, (y+pixjitter())/vres)) < -FTINY) { |
666 |
> |
RAY thisray; |
667 |
> |
FVECT lorg, ldir; |
668 |
> |
double hpos, vpos, vdist, lmax; |
669 |
> |
register int i; |
670 |
> |
/* compute view ray */ |
671 |
> |
hpos = (x+pixjitter())/hres; |
672 |
> |
vpos = (y+pixjitter())/vres; |
673 |
> |
if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
674 |
> |
&ourview, hpos, vpos)) < -FTINY) { |
675 |
|
setcolor(col, 0.0, 0.0, 0.0); |
676 |
|
return(0.0); |
677 |
|
} |
678 |
+ |
vdist = ourview.vdist; |
679 |
+ |
/* set pixel index */ |
680 |
+ |
samplendx = pixnumber(x,y,hres,vres); |
681 |
+ |
/* optional motion blur */ |
682 |
+ |
if (lastview.type && mblur > FTINY && (lmax = viewray(lorg, ldir, |
683 |
+ |
&lastview, hpos, vpos)) >= -FTINY) { |
684 |
+ |
register double d = mblur*(.5-urand(281+samplendx)); |
685 |
|
|
686 |
< |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
686 |
> |
thisray.rmax = (1.-d)*thisray.rmax + d*lmax; |
687 |
> |
for (i = 3; i--; ) { |
688 |
> |
thisray.rorg[i] = (1.-d)*thisray.rorg[i] + d*lorg[i]; |
689 |
> |
thisray.rdir[i] = (1.-d)*thisray.rdir[i] + d*ldir[i]; |
690 |
> |
} |
691 |
> |
if (normalize(thisray.rdir) == 0.0) |
692 |
> |
return(0.0); |
693 |
> |
vdist = (1.-d)*vdist + d*lastview.vdist; |
694 |
> |
} |
695 |
> |
/* optional depth-of-field */ |
696 |
> |
if (dblur > FTINY && vdist > FTINY) { |
697 |
> |
double vc, dfh, dfv; |
698 |
> |
/* square/circle conv. */ |
699 |
> |
dfh = vc = 1. - 2.*frandom(); |
700 |
> |
dfv = 1. - 2.*frandom(); |
701 |
> |
dfh *= .5*dblur*sqrt(1. - .5*dfv*dfv); |
702 |
> |
dfv *= .5*dblur*sqrt(1. - .5*vc*vc); |
703 |
> |
if (ourview.type == VT_PER || ourview.type == VT_PAR) { |
704 |
> |
dfh /= sqrt(ourview.hn2); |
705 |
> |
dfv /= sqrt(ourview.vn2); |
706 |
> |
for (i = 3; i--; ) { |
707 |
> |
vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
708 |
> |
thisray.rorg[i] += dfh*ourview.hvec[i] + |
709 |
> |
dfv*ourview.vvec[i] ; |
710 |
> |
thisray.rdir[i] = vc - thisray.rorg[i]; |
711 |
> |
} |
712 |
> |
} else { /* non-standard view case */ |
713 |
> |
double dfd = PI/4.*dblur*(.5 - frandom()); |
714 |
> |
if (ourview.type != VT_ANG && ourview.type != VT_PLS) { |
715 |
> |
if (ourview.type != VT_CYL) |
716 |
> |
dfh /= sqrt(ourview.hn2); |
717 |
> |
dfv /= sqrt(ourview.vn2); |
718 |
> |
} |
719 |
> |
for (i = 3; i--; ) { |
720 |
> |
vc = thisray.rorg[i] + vdist*thisray.rdir[i]; |
721 |
> |
thisray.rorg[i] += dfh*ourview.hvec[i] + |
722 |
> |
dfv*ourview.vvec[i] + |
723 |
> |
dfd*ourview.vdir[i] ; |
724 |
> |
thisray.rdir[i] = vc - thisray.rorg[i]; |
725 |
> |
} |
726 |
> |
} |
727 |
> |
if (normalize(thisray.rdir) == 0.0) |
728 |
> |
return(0.0); |
729 |
> |
} |
730 |
|
|
731 |
< |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
731 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
732 |
|
|
733 |
|
rayvalue(&thisray); /* trace ray */ |
734 |
|
|
738 |
|
} |
739 |
|
|
740 |
|
|
741 |
< |
int |
742 |
< |
salvage(oldfile) /* salvage scanlines from killed program */ |
743 |
< |
char *oldfile; |
741 |
> |
static int |
742 |
> |
salvage( /* salvage scanlines from killed program */ |
743 |
> |
char *oldfile |
744 |
> |
) |
745 |
|
{ |
746 |
|
COLR *scanline; |
747 |
|
FILE *fp; |
755 |
|
error(WARNING, errmsg); |
756 |
|
goto gotzip; |
757 |
|
} |
758 |
< |
#ifdef MSDOS |
642 |
< |
setmode(fileno(fp), O_BINARY); |
643 |
< |
#endif |
758 |
> |
SET_FILE_BINARY(fp); |
759 |
|
/* discard header */ |
760 |
|
getheader(fp, NULL, NULL); |
761 |
|
/* get picture size */ |
784 |
|
} |
785 |
|
if (fflush(stdout) == EOF) |
786 |
|
goto writerr; |
787 |
< |
free((char *)scanline); |
787 |
> |
free((void *)scanline); |
788 |
|
fclose(fp); |
789 |
|
unlink(oldfile); |
790 |
|
return(y); |
795 |
|
writerr: |
796 |
|
sprintf(errmsg, "write error during recovery of \"%s\"", oldfile); |
797 |
|
error(SYSTEM, errmsg); |
798 |
+ |
return -1; /* pro forma return */ |
799 |
|
} |
800 |
|
|
801 |
< |
|
802 |
< |
int |
803 |
< |
pixnumber(x, y, xres, yres) /* compute pixel index (brushed) */ |
804 |
< |
register int x, y; |
805 |
< |
int xres, yres; |
801 |
> |
static int |
802 |
> |
pixnumber( /* compute pixel index (brushed) */ |
803 |
> |
register int x, |
804 |
> |
register int y, |
805 |
> |
int xres, |
806 |
> |
int yres |
807 |
> |
) |
808 |
|
{ |
809 |
|
x -= y; |
810 |
|
while (x < 0) |