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/* Copyright (c) 1991 Regents of the University of California */ |
1 |
> |
/* Copyright (c) 1994 Regents of the University of California */ |
2 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
20 |
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#include "resolu.h" |
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|
23 |
< |
#ifndef BSD |
24 |
< |
#define vfork fork |
25 |
< |
#endif |
23 |
> |
#define LOG2 0.69314718055994530942 |
24 |
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|
25 |
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#define pscan(y) (ourpict+(y)*hresolu) |
26 |
+ |
#define sscan(y) (ourspict+(y)*hresolu) |
27 |
+ |
#define wscan(y) (ourweigh+(y)*hresolu) |
28 |
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#define zscan(y) (ourzbuf+(y)*hresolu) |
29 |
+ |
#define averaging (ourweigh != NULL) |
30 |
+ |
#define usematrix (hasmatrix & !averaging) |
31 |
+ |
#define zisnorm (!usematrix | ourview.type != VT_PER) |
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|
33 |
+ |
#define MAXWT 1000. /* maximum pixel weight (averaging) */ |
34 |
+ |
|
35 |
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#define F_FORE 1 /* fill foreground */ |
36 |
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#define F_BACK 2 /* fill background */ |
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|
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|
44 |
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struct position {int x,y; float z;}; |
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|
46 |
+ |
#define NSTEPS 64 /* number steps in overlap prescan */ |
47 |
+ |
#define MINSTEP 4 /* minimum worthwhile preview step */ |
48 |
+ |
|
49 |
+ |
struct bound {int min,max;}; |
50 |
+ |
|
51 |
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VIEW ourview = STDVIEW; /* desired view */ |
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int hresolu = 512; /* horizontal resolution */ |
53 |
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int vresolu = 512; /* vertical resolution */ |
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|
56 |
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double zeps = .02; /* allowed z epsilon */ |
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|
58 |
< |
COLR *ourpict; /* output picture */ |
58 |
> |
COLR *ourpict; /* output picture (COLR's) */ |
59 |
> |
COLOR *ourspict; /* output pixel sums (averaging) */ |
60 |
> |
float *ourweigh = NULL; /* output pixel weights (averaging) */ |
61 |
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float *ourzbuf; /* corresponding z-buffer */ |
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|
63 |
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char *progname; |
67 |
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extern int backfill(), rcalfill(); /* fill functions */ |
68 |
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int (*fillfunc)() = backfill; /* selected fill function */ |
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COLR backcolr = BLKCOLR; /* background color */ |
70 |
+ |
COLOR backcolor = BLKCOLOR; /* background color (float) */ |
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double backz = 0.0; /* background z value */ |
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< |
int normdist = 1; /* normalized distance? */ |
73 |
< |
double ourexp = -1; /* output picture exposure */ |
72 |
> |
int normdist = 1; /* i/o normalized distance? */ |
73 |
> |
double ourexp = -1; /* original picture exposure */ |
74 |
> |
int expadj = 0; /* exposure adjustment (f-stops) */ |
75 |
> |
double rexpadj = 1; /* real exposure adjustment */ |
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|
77 |
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VIEW theirview = STDVIEW; /* input view */ |
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int gotview; /* got input view? */ |
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int wrongformat = 0; /* input in another format? */ |
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RESOLU tresolu; /* input resolution */ |
81 |
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double theirexp; /* input picture exposure */ |
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double theirs2ours[4][4]; /* transformation matrix */ |
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> |
MAT4 theirs2ours; /* transformation matrix */ |
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int hasmatrix = 0; /* has transformation matrix */ |
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|
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int PDesc[3] = {-1,-1,-1}; /* rtrace process descriptor */ |
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int packsiz; /* actual packet size */ |
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int queuesiz; /* number of pixels pending */ |
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|
91 |
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extern double movepixel(); |
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|
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|
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main(argc, argv) /* interpolate pictures */ |
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int argc; |
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char *argv[]; |
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badarg(argc-i-1,argv+i+1,al)) \ |
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goto badopt |
101 |
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int gotvfile = 0; |
102 |
+ |
int doavg = -1; |
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char *zfile = NULL; |
104 |
+ |
char *expcomp = NULL; |
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char *err; |
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int i, rval; |
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|
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continue; |
115 |
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} |
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switch (argv[i][1]) { |
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case 'e': /* exposure */ |
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check(2,"f"); |
119 |
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expcomp = argv[++i]; |
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break; |
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case 't': /* threshold */ |
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check(2,"f"); |
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zeps = atof(argv[++i]); |
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break; |
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case 'a': /* average */ |
126 |
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check(2,NULL); |
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doavg = 1; |
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break; |
129 |
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case 'q': /* quick (no avg.) */ |
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check(2,NULL); |
131 |
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doavg = 0; |
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break; |
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case 'n': /* dist. normalized? */ |
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check(2,NULL); |
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normdist = !normdist; |
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case 'c': /* color */ |
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check(3,"fff"); |
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fillfunc = backfill; |
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setcolr(backcolr, atof(argv[i+1]), |
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setcolor(backcolor, atof(argv[i+1]), |
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atof(argv[i+2]), atof(argv[i+3])); |
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setcolr(backcolr, colval(backcolor,RED), |
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colval(backcolor,GRN), |
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colval(backcolor,BLU)); |
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i += 3; |
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break; |
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case 'z': /* z value */ |
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goto badopt; |
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check(3,"s"); |
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gotvfile = viewfile(argv[++i], &ourview, 0, 0); |
206 |
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if (gotvfile < 0) { |
207 |
< |
perror(argv[i]); |
208 |
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exit(1); |
175 |
< |
} else if (gotvfile == 0) { |
206 |
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if (gotvfile < 0) |
207 |
> |
syserror(argv[i]); |
208 |
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else if (gotvfile == 0) { |
209 |
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fprintf(stderr, "%s: bad view file\n", |
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argv[i]); |
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exit(1); |
223 |
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goto userr; |
224 |
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if (fillsamp == 1) |
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fillo &= ~F_BACK; |
226 |
+ |
if (doavg < 0) |
227 |
+ |
doavg = (argc-i) > 2; |
228 |
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if (expcomp != NULL) |
229 |
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if (expcomp[0] == '+' | expcomp[0] == '-') { |
230 |
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expadj = atof(expcomp) + (expcomp[0]=='+' ? .5 : -.5); |
231 |
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if (doavg) |
232 |
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rexpadj = pow(2.0, atof(expcomp)); |
233 |
+ |
else |
234 |
+ |
rexpadj = pow(2.0, (double)expadj); |
235 |
+ |
} else { |
236 |
+ |
if (!isflt(expcomp)) |
237 |
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goto userr; |
238 |
+ |
rexpadj = atof(expcomp); |
239 |
+ |
expadj = log(rexpadj)/LOG2 + (rexpadj>1 ? .5 : -.5); |
240 |
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if (!doavg) |
241 |
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rexpadj = pow(2.0, (double)expadj); |
242 |
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} |
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/* set view */ |
244 |
< |
if (err = setview(&ourview)) { |
244 |
> |
if ((err = setview(&ourview)) != NULL) { |
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fprintf(stderr, "%s: %s\n", progname, err); |
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exit(1); |
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} |
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normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu); |
249 |
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/* allocate frame */ |
250 |
< |
ourpict = (COLR *)bmalloc(hresolu*vresolu*sizeof(COLR)); |
250 |
> |
if (doavg) { |
251 |
> |
ourspict = (COLOR *)bmalloc(hresolu*vresolu*sizeof(COLOR)); |
252 |
> |
ourweigh = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
253 |
> |
if (ourspict == NULL | ourweigh == NULL) |
254 |
> |
syserror(progname); |
255 |
> |
} else { |
256 |
> |
ourpict = (COLR *)bmalloc(hresolu*vresolu*sizeof(COLR)); |
257 |
> |
if (ourpict == NULL) |
258 |
> |
syserror(progname); |
259 |
> |
} |
260 |
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ourzbuf = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
261 |
< |
if (ourpict == NULL || ourzbuf == NULL) |
262 |
< |
syserror(); |
261 |
> |
if (ourzbuf == NULL) |
262 |
> |
syserror(progname); |
263 |
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bzero((char *)ourzbuf, hresolu*vresolu*sizeof(float)); |
264 |
+ |
/* new header */ |
265 |
+ |
newheader("RADIANCE", stdout); |
266 |
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/* get input */ |
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for ( ; i < argc; i += 2) |
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addpicture(argv[i], argv[i+1]); |
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fillpicture(fillfunc); |
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/* close calculation */ |
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caldone(); |
276 |
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/* aft clipping */ |
277 |
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clipaft(); |
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/* add to header */ |
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printargs(argc, argv, stdout); |
280 |
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if (gotvfile) { |
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fprintview(&ourview, stdout); |
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putc('\n', stdout); |
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} |
285 |
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if (pixaspect < .99 || pixaspect > 1.01) |
285 |
> |
if (pixaspect < .99 | pixaspect > 1.01) |
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fputaspect(pixaspect, stdout); |
287 |
< |
if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
287 |
> |
if (ourexp > 0) |
288 |
> |
ourexp *= rexpadj; |
289 |
> |
else |
290 |
> |
ourexp = rexpadj; |
291 |
> |
if (ourexp < .995 | ourexp > 1.005) |
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fputexpos(ourexp, stdout); |
293 |
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fputformat(COLRFMT, stdout); |
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putc('\n', stdout); |
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exit(0); |
302 |
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userr: |
303 |
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fprintf(stderr, |
304 |
< |
"Usage: %s [view opts][-t eps][-z zout][-fT][-n] pfile zspec ..\n", |
304 |
> |
"Usage: %s [view opts][-t eps][-z zout][-e spec][-a|-q][-fT][-n] pfile zspec ..\n", |
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progname); |
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exit(1); |
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#undef check |
313 |
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{ |
314 |
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char fmt[32]; |
315 |
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|
316 |
< |
if (isformat(s)) { |
317 |
< |
formatval(fmt, s); |
316 |
> |
if (isheadid(s)) |
317 |
> |
return; |
318 |
> |
if (formatval(fmt, s)) { |
319 |
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wrongformat = strcmp(fmt, COLRFMT); |
320 |
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return; |
321 |
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} |
340 |
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COLR *scanin; |
341 |
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float *zin; |
342 |
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struct position *plast; |
343 |
+ |
struct bound *xlim, ylim; |
344 |
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int y; |
345 |
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/* open picture file */ |
346 |
< |
if ((pfp = fopen(pfile, "r")) == NULL) { |
347 |
< |
perror(pfile); |
279 |
< |
exit(1); |
280 |
< |
} |
346 |
> |
if ((pfp = fopen(pfile, "r")) == NULL) |
347 |
> |
syserror(pfile); |
348 |
|
/* get header with exposure and view */ |
349 |
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theirexp = 1.0; |
350 |
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gotview = 0; |
364 |
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} |
365 |
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/* compute transformation */ |
366 |
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hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
300 |
– |
/* allocate scanlines */ |
301 |
– |
scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
302 |
– |
zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
303 |
– |
plast = (struct position *)calloc(scanlen(&tresolu), |
304 |
– |
sizeof(struct position)); |
305 |
– |
if (scanin == NULL || zin == NULL || plast == NULL) |
306 |
– |
syserror(); |
367 |
|
/* get z specification or file */ |
368 |
+ |
zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
369 |
+ |
if (zin == NULL) |
370 |
+ |
syserror(progname); |
371 |
|
if ((zfd = open(zspec, O_RDONLY)) == -1) { |
372 |
|
double zvalue; |
373 |
|
register int x; |
374 |
< |
if (!isfloat(zspec) || (zvalue = atof(zspec)) <= 0.0) { |
375 |
< |
perror(zspec); |
313 |
< |
exit(1); |
314 |
< |
} |
374 |
> |
if (!isflt(zspec) || (zvalue = atof(zspec)) <= 0.0) |
375 |
> |
syserror(zspec); |
376 |
|
for (x = scanlen(&tresolu); x-- > 0; ) |
377 |
|
zin[x] = zvalue; |
378 |
|
} |
379 |
< |
/* load image */ |
380 |
< |
for (y = 0; y < numscans(&tresolu); y++) { |
379 |
> |
/* compute transferrable perimeter */ |
380 |
> |
xlim = (struct bound *)malloc(numscans(&tresolu)*sizeof(struct bound)); |
381 |
> |
if (xlim == NULL) |
382 |
> |
syserror(progname); |
383 |
> |
if (!getperim(xlim, &ylim, zin, zfd)) { /* overlapping area? */ |
384 |
> |
free((char *)zin); |
385 |
> |
free((char *)xlim); |
386 |
> |
if (zfd != -1) |
387 |
> |
close(zfd); |
388 |
> |
fclose(pfp); |
389 |
> |
return; |
390 |
> |
} |
391 |
> |
/* allocate scanlines */ |
392 |
> |
scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
393 |
> |
plast = (struct position *)calloc(scanlen(&tresolu), |
394 |
> |
sizeof(struct position)); |
395 |
> |
if (scanin == NULL | plast == NULL) |
396 |
> |
syserror(progname); |
397 |
> |
/* skip to starting point */ |
398 |
> |
for (y = 0; y < ylim.min; y++) |
399 |
|
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
400 |
|
fprintf(stderr, "%s: read error\n", pfile); |
401 |
|
exit(1); |
402 |
|
} |
403 |
< |
if (zfd != -1 && read(zfd,(char *)zin, |
404 |
< |
scanlen(&tresolu)*sizeof(float)) |
405 |
< |
< scanlen(&tresolu)*sizeof(float)) { |
406 |
< |
fprintf(stderr, "%s: read error\n", zspec); |
403 |
> |
if (zfd != -1 && lseek(zfd, |
404 |
> |
(long)ylim.min*scanlen(&tresolu)*sizeof(float), 0) < 0) |
405 |
> |
syserror(zspec); |
406 |
> |
/* load image */ |
407 |
> |
for (y = ylim.min; y <= ylim.max; y++) { |
408 |
> |
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
409 |
> |
fprintf(stderr, "%s: read error\n", pfile); |
410 |
|
exit(1); |
411 |
|
} |
412 |
< |
addscanline(y, scanin, zin, plast); |
412 |
> |
if (zfd != -1 && read(zfd, (char *)zin, |
413 |
> |
scanlen(&tresolu)*sizeof(float)) |
414 |
> |
< scanlen(&tresolu)*sizeof(float)) |
415 |
> |
syserror(zspec); |
416 |
> |
addscanline(xlim+y, y, scanin, zin, plast); |
417 |
|
} |
418 |
|
/* clean up */ |
419 |
+ |
free((char *)xlim); |
420 |
|
free((char *)scanin); |
421 |
|
free((char *)zin); |
422 |
|
free((char *)plast); |
427 |
|
|
428 |
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|
429 |
|
pixform(xfmat, vw1, vw2) /* compute view1 to view2 matrix */ |
430 |
< |
register double xfmat[4][4]; |
430 |
> |
register MAT4 xfmat; |
431 |
|
register VIEW *vw1, *vw2; |
432 |
|
{ |
433 |
|
double m4t[4][4]; |
467 |
|
} |
468 |
|
|
469 |
|
|
470 |
< |
addscanline(y, pline, zline, lasty) /* add scanline to output */ |
470 |
> |
addscanline(xl, y, pline, zline, lasty) /* add scanline to output */ |
471 |
> |
struct bound *xl; |
472 |
|
int y; |
473 |
|
COLR *pline; |
474 |
|
float *zline; |
476 |
|
{ |
477 |
|
FVECT pos; |
478 |
|
struct position lastx, newpos; |
479 |
+ |
double wt; |
480 |
|
register int x; |
481 |
|
|
482 |
|
lastx.z = 0; |
483 |
< |
for (x = scanlen(&tresolu); x-- > 0; ) { |
483 |
> |
for (x = xl->max; x >= xl->min; x--) { |
484 |
|
pix2loc(pos, &tresolu, x, y); |
485 |
|
pos[2] = zline[x]; |
486 |
< |
if (movepixel(pos) < 0) { |
486 |
> |
if ((wt = movepixel(pos)) <= FTINY) { |
487 |
|
lasty[x].z = lastx.z = 0; /* mark invalid */ |
488 |
|
continue; |
489 |
|
} |
490 |
+ |
/* add pixel to our image */ |
491 |
|
newpos.x = pos[0] * hresolu; |
492 |
|
newpos.y = pos[1] * vresolu; |
493 |
|
newpos.z = zline[x]; |
494 |
< |
/* add pixel to our image */ |
495 |
< |
if (pos[0] >= 0 && newpos.x < hresolu |
496 |
< |
&& pos[1] >= 0 && newpos.y < vresolu) { |
497 |
< |
addpixel(&newpos, &lastx, &lasty[x], pline[x], pos[2]); |
408 |
< |
lasty[x].x = lastx.x = newpos.x; |
409 |
< |
lasty[x].y = lastx.y = newpos.y; |
410 |
< |
lasty[x].z = lastx.z = newpos.z; |
411 |
< |
} else |
412 |
< |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
494 |
> |
addpixel(&newpos, &lastx, &lasty[x], pline[x], wt, pos[2]); |
495 |
> |
lasty[x].x = lastx.x = newpos.x; |
496 |
> |
lasty[x].y = lastx.y = newpos.y; |
497 |
> |
lasty[x].z = lastx.z = newpos.z; |
498 |
|
} |
499 |
|
} |
500 |
|
|
501 |
|
|
502 |
< |
addpixel(p0, p1, p2, pix, z) /* fill in pixel parallelogram */ |
502 |
> |
addpixel(p0, p1, p2, pix, w, z) /* fill in pixel parallelogram */ |
503 |
|
struct position *p0, *p1, *p2; |
504 |
|
COLR pix; |
505 |
+ |
double w; |
506 |
|
double z; |
507 |
|
{ |
508 |
|
double zt = 2.*zeps*p0->z; /* threshold */ |
509 |
+ |
COLOR pval; /* converted+weighted pixel */ |
510 |
|
int s1x, s1y, s2x, s2y; /* step sizes */ |
511 |
|
int l1, l2, c1, c2; /* side lengths and counters */ |
512 |
|
int p1isy; /* p0p1 along y? */ |
520 |
|
l1 = ABS(s1x); |
521 |
|
if (p1isy = (ABS(s1y) > l1)) |
522 |
|
l1 = ABS(s1y); |
523 |
+ |
else if (l1 < 1) |
524 |
+ |
l1 = 1; |
525 |
|
} else { |
526 |
|
l1 = s1x = s1y = 1; |
527 |
|
p1isy = -1; |
537 |
|
if (p1isy != 0 && ABS(s2x) > l2) |
538 |
|
l2 = ABS(s2x); |
539 |
|
} |
540 |
+ |
if (l2 < 1) |
541 |
+ |
l2 = 1; |
542 |
|
} else |
543 |
|
l2 = s2x = s2y = 1; |
544 |
|
/* fill the parallelogram */ |
545 |
+ |
if (averaging) { |
546 |
+ |
colr_color(pval, pix); |
547 |
+ |
scalecolor(pval, w); |
548 |
+ |
} |
549 |
|
for (c1 = l1; c1-- > 0; ) { |
550 |
|
x1 = p0->x + c1*s1x/l1; |
551 |
|
y1 = p0->y + c1*s1y/l1; |
556 |
|
y = y1 + c2*s2y/l2; |
557 |
|
if (y < 0 || y >= vresolu) |
558 |
|
continue; |
559 |
< |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
559 |
> |
if (averaging) { |
560 |
> |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
561 |
|
> zeps*zscan(y)[x]) { |
562 |
< |
zscan(y)[x] = z; |
562 |
> |
copycolor(sscan(y)[x], pval); |
563 |
> |
wscan(y)[x] = w; |
564 |
> |
zscan(y)[x] = z; |
565 |
> |
} else if (z-zscan(y)[x] <= zeps*zscan(y)[x]) { |
566 |
> |
addcolor(sscan(y)[x], pval); |
567 |
> |
wscan(y)[x] += w; |
568 |
> |
} |
569 |
> |
} else if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
570 |
> |
> zeps*zscan(y)[x]) { |
571 |
|
copycolr(pscan(y)[x], pix); |
572 |
+ |
zscan(y)[x] = z; |
573 |
|
} |
574 |
|
} |
575 |
|
} |
576 |
|
} |
577 |
|
|
578 |
|
|
579 |
+ |
double |
580 |
|
movepixel(pos) /* reposition image point */ |
581 |
< |
FVECT pos; |
581 |
> |
register FVECT pos; |
582 |
|
{ |
583 |
< |
FVECT pt, direc; |
583 |
> |
FVECT pt, tdir, odir; |
584 |
> |
double d; |
585 |
> |
register int i; |
586 |
|
|
587 |
|
if (pos[2] <= 0) /* empty pixel */ |
588 |
< |
return(-1); |
589 |
< |
if (hasmatrix) { |
588 |
> |
return(0); |
589 |
> |
if (usematrix) { |
590 |
|
pos[0] += theirview.hoff - .5; |
591 |
|
pos[1] += theirview.voff - .5; |
592 |
+ |
if (normdist && theirview.type == VT_PER) |
593 |
+ |
d = sqrt(1. + pos[0]*pos[0]*theirview.hn2 |
594 |
+ |
+ pos[1]*pos[1]*theirview.vn2); |
595 |
+ |
else |
596 |
+ |
d = 1.; |
597 |
+ |
pos[2] += d*theirview.vfore; |
598 |
|
if (theirview.type == VT_PER) { |
599 |
< |
if (normdist) /* adjust for eye-ray distance */ |
486 |
< |
pos[2] /= sqrt( 1. |
487 |
< |
+ pos[0]*pos[0]*theirview.hn2 |
488 |
< |
+ pos[1]*pos[1]*theirview.vn2 ); |
599 |
> |
pos[2] /= d; |
600 |
|
pos[0] *= pos[2]; |
601 |
|
pos[1] *= pos[2]; |
602 |
|
} |
603 |
|
multp3(pos, pos, theirs2ours); |
604 |
< |
if (pos[2] <= 0) |
605 |
< |
return(-1); |
604 |
> |
if (pos[2] <= ourview.vfore) |
605 |
> |
return(0); |
606 |
|
if (ourview.type == VT_PER) { |
607 |
|
pos[0] /= pos[2]; |
608 |
|
pos[1] /= pos[2]; |
609 |
|
} |
610 |
|
pos[0] += .5 - ourview.hoff; |
611 |
|
pos[1] += .5 - ourview.voff; |
612 |
+ |
pos[2] -= ourview.vfore; |
613 |
+ |
} else { |
614 |
+ |
if (viewray(pt, tdir, &theirview, pos[0], pos[1]) < -FTINY) |
615 |
+ |
return(0); |
616 |
+ |
if (!normdist & theirview.type == VT_PER) /* adjust */ |
617 |
+ |
pos[2] *= sqrt(1. + pos[0]*pos[0]*theirview.hn2 |
618 |
+ |
+ pos[1]*pos[1]*theirview.vn2); |
619 |
+ |
pt[0] += tdir[0]*pos[2]; |
620 |
+ |
pt[1] += tdir[1]*pos[2]; |
621 |
+ |
pt[2] += tdir[2]*pos[2]; |
622 |
+ |
viewloc(pos, &ourview, pt); |
623 |
+ |
if (pos[2] <= 0) |
624 |
+ |
return(0); |
625 |
+ |
} |
626 |
+ |
if (pos[0] < 0 || pos[0] >= 1-FTINY || pos[1] < 0 || pos[1] >= 1-FTINY) |
627 |
|
return(0); |
628 |
+ |
if (!averaging) |
629 |
+ |
return(1); |
630 |
+ |
if (ourview.type == VT_PAR) /* compute our direction */ |
631 |
+ |
VCOPY(odir, ourview.vdir); |
632 |
+ |
else |
633 |
+ |
for (i = 0; i < 3; i++) |
634 |
+ |
odir[i] = (pt[i] - ourview.vp[i])/pos[2]; |
635 |
+ |
d = DOT(odir,tdir); /* compute pixel weight */ |
636 |
+ |
if (d >= 1.-1./MAXWT/MAXWT) |
637 |
+ |
return(MAXWT); /* clip to maximum weight */ |
638 |
+ |
return(1./sqrt(1.-d)); |
639 |
+ |
} |
640 |
+ |
|
641 |
+ |
|
642 |
+ |
getperim(xl, yl, zline, zfd) /* compute overlapping image area */ |
643 |
+ |
register struct bound *xl; |
644 |
+ |
struct bound *yl; |
645 |
+ |
float *zline; |
646 |
+ |
int zfd; |
647 |
+ |
{ |
648 |
+ |
int step; |
649 |
+ |
FVECT pos; |
650 |
+ |
register int x, y; |
651 |
+ |
/* set up step size */ |
652 |
+ |
if (scanlen(&tresolu) < numscans(&tresolu)) |
653 |
+ |
step = scanlen(&tresolu)/NSTEPS; |
654 |
+ |
else |
655 |
+ |
step = numscans(&tresolu)/NSTEPS; |
656 |
+ |
if (step < MINSTEP) { /* not worth cropping? */ |
657 |
+ |
yl->min = 0; |
658 |
+ |
yl->max = numscans(&tresolu) - 1; |
659 |
+ |
x = scanlen(&tresolu) - 1; |
660 |
+ |
for (y = numscans(&tresolu); y--; ) { |
661 |
+ |
xl[y].min = 0; |
662 |
+ |
xl[y].max = x; |
663 |
+ |
} |
664 |
+ |
return(1); |
665 |
|
} |
666 |
< |
if (viewray(pt, direc, &theirview, pos[0], pos[1]) < 0) |
667 |
< |
return(-1); |
668 |
< |
pt[0] += direc[0]*pos[2]; |
669 |
< |
pt[1] += direc[1]*pos[2]; |
670 |
< |
pt[2] += direc[2]*pos[2]; |
671 |
< |
viewloc(pos, &ourview, pt); |
672 |
< |
if (pos[2] <= 0) |
673 |
< |
return(-1); |
674 |
< |
return(0); |
666 |
> |
yl->min = 32000; yl->max = 0; /* search for points on image */ |
667 |
> |
for (y = step - 1; y < numscans(&tresolu); y += step) { |
668 |
> |
if (zfd != -1) { |
669 |
> |
if (lseek(zfd, (long)y*scanlen(&tresolu)*sizeof(float), |
670 |
> |
0) < 0) |
671 |
> |
syserror("lseek"); |
672 |
> |
if (read(zfd, (char *)zline, |
673 |
> |
scanlen(&tresolu)*sizeof(float)) |
674 |
> |
< scanlen(&tresolu)*sizeof(float)) |
675 |
> |
syserror("read"); |
676 |
> |
} |
677 |
> |
xl[y].min = 32000; xl[y].max = 0; /* x max */ |
678 |
> |
for (x = scanlen(&tresolu); (x -= step) > 0; ) { |
679 |
> |
pix2loc(pos, &tresolu, x, y); |
680 |
> |
pos[2] = zline[x]; |
681 |
> |
if (movepixel(pos) > FTINY) { |
682 |
> |
xl[y].max = x + step - 1; |
683 |
> |
xl[y].min = x - step + 1; /* x min */ |
684 |
> |
if (xl[y].min < 0) |
685 |
> |
xl[y].min = 0; |
686 |
> |
for (x = step - 1; x < xl[y].max; x += step) { |
687 |
> |
pix2loc(pos, &tresolu, x, y); |
688 |
> |
pos[2] = zline[x]; |
689 |
> |
if (movepixel(pos) > FTINY) { |
690 |
> |
xl[y].min = x - step + 1; |
691 |
> |
break; |
692 |
> |
} |
693 |
> |
} |
694 |
> |
if (y < yl->min) /* y limits */ |
695 |
> |
yl->min = y - step + 1; |
696 |
> |
yl->max = y + step - 1; |
697 |
> |
break; |
698 |
> |
} |
699 |
> |
} |
700 |
> |
/* fill in between */ |
701 |
> |
if (y < step) { |
702 |
> |
xl[y-1].min = xl[y].min; |
703 |
> |
xl[y-1].max = xl[y].max; |
704 |
> |
} else { |
705 |
> |
if (xl[y].min < xl[y-step].min) |
706 |
> |
xl[y-1].min = xl[y].min; |
707 |
> |
else |
708 |
> |
xl[y-1].min = xl[y-step].min; |
709 |
> |
if (xl[y].max > xl[y-step].max) |
710 |
> |
xl[y-1].max = xl[y].max; |
711 |
> |
else |
712 |
> |
xl[y-1].max = xl[y-step].max; |
713 |
> |
} |
714 |
> |
for (x = 2; x < step; x++) |
715 |
> |
copystruct(xl+y-x, xl+y-1); |
716 |
> |
} |
717 |
> |
if (yl->max >= numscans(&tresolu)) |
718 |
> |
yl->max = numscans(&tresolu) - 1; |
719 |
> |
y -= step; |
720 |
> |
for (x = numscans(&tresolu) - 1; x > y; x--) /* fill bottom rows */ |
721 |
> |
copystruct(xl+x, xl+y); |
722 |
> |
return(yl->max >= yl->min); |
723 |
|
} |
724 |
|
|
725 |
|
|
733 |
|
/* get back buffer */ |
734 |
|
yback = (int *)malloc(hresolu*sizeof(int)); |
735 |
|
if (yback == NULL) |
736 |
< |
syserror(); |
736 |
> |
syserror(progname); |
737 |
|
for (x = 0; x < hresolu; x++) |
738 |
|
yback[x] = -2; |
739 |
|
/* |
793 |
|
< zscan(y)[xback] ) ) { |
794 |
|
if (samp > 0 && ABS(x-xback) >= samp) |
795 |
|
goto fillit; |
796 |
< |
copycolr(pscan(y)[x],pscan(y)[xback]); |
796 |
> |
if (averaging) { |
797 |
> |
copycolor(sscan(y)[x], |
798 |
> |
sscan(y)[xback]); |
799 |
> |
wscan(y)[x] = wscan(y)[xback]; |
800 |
> |
} else |
801 |
> |
copycolr(pscan(y)[x], |
802 |
> |
pscan(y)[xback]); |
803 |
|
zscan(y)[x] = zscan(y)[xback]; |
804 |
|
} else { |
805 |
|
if (samp > 0 && ABS(y-yback[x]) > samp) |
806 |
|
goto fillit; |
807 |
< |
copycolr(pscan(y)[x],pscan(yback[x])[x]); |
807 |
> |
if (averaging) { |
808 |
> |
copycolor(sscan(y)[x], |
809 |
> |
sscan(yback[x])[x]); |
810 |
> |
wscan(y)[x] = |
811 |
> |
wscan(yback[x])[x]; |
812 |
> |
} else |
813 |
> |
copycolr(pscan(y)[x], |
814 |
> |
pscan(yback[x])[x]); |
815 |
|
zscan(y)[x] = zscan(yback[x])[x]; |
816 |
|
} |
817 |
|
continue; |
843 |
|
} |
844 |
|
|
845 |
|
|
846 |
< |
writepicture() /* write out picture */ |
846 |
> |
clipaft() /* perform aft clipping as indicated */ |
847 |
|
{ |
848 |
+ |
register int x, y; |
849 |
+ |
int adjtest = ourview.type == VT_PER & zisnorm; |
850 |
+ |
double tstdist; |
851 |
+ |
double yzn2, vx; |
852 |
+ |
|
853 |
+ |
if (ourview.vaft <= FTINY) |
854 |
+ |
return; |
855 |
+ |
tstdist = ourview.vaft - ourview.vfore; |
856 |
+ |
for (y = 0; y < vresolu; y++) { |
857 |
+ |
if (adjtest) { /* adjust test */ |
858 |
+ |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
859 |
+ |
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
860 |
+ |
tstdist = (ourview.vaft - ourview.vfore)*sqrt(yzn2); |
861 |
+ |
} |
862 |
+ |
for (x = 0; x < hresolu; x++) |
863 |
+ |
if (zscan(y)[x] > tstdist) { |
864 |
+ |
if (adjtest) { |
865 |
+ |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
866 |
+ |
if (zscan(y)[x] <= (ourview.vaft - |
867 |
+ |
ourview.vfore) * |
868 |
+ |
sqrt(vx*vx*ourview.hn2 + yzn2)) |
869 |
+ |
continue; |
870 |
+ |
} |
871 |
+ |
if (averaging) |
872 |
+ |
bzero(sscan(y)[x], sizeof(COLOR)); |
873 |
+ |
else |
874 |
+ |
bzero(pscan(y)[x], sizeof(COLR)); |
875 |
+ |
zscan(y)[x] = 0.0; |
876 |
+ |
} |
877 |
+ |
} |
878 |
+ |
} |
879 |
+ |
|
880 |
+ |
|
881 |
+ |
writepicture() /* write out picture (alters buffer) */ |
882 |
+ |
{ |
883 |
|
int y; |
884 |
+ |
register int x; |
885 |
+ |
double d; |
886 |
|
|
887 |
|
fprtresolu(hresolu, vresolu, stdout); |
888 |
|
for (y = vresolu-1; y >= 0; y--) |
889 |
< |
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
890 |
< |
syserror(); |
889 |
> |
if (averaging) { |
890 |
> |
for (x = 0; x < hresolu; x++) { /* average pixels */ |
891 |
> |
d = rexpadj/wscan(y)[x]; |
892 |
> |
scalecolor(sscan(y)[x], d); |
893 |
> |
} |
894 |
> |
if (fwritescan(sscan(y), hresolu, stdout) < 0) |
895 |
> |
syserror(progname); |
896 |
> |
} else { |
897 |
> |
if (expadj) |
898 |
> |
shiftcolrs(pscan(y), hresolu, expadj); |
899 |
> |
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
900 |
> |
syserror(progname); |
901 |
> |
} |
902 |
|
} |
903 |
|
|
904 |
|
|
905 |
< |
writedistance(fname) /* write out z file */ |
905 |
> |
writedistance(fname) /* write out z file (alters buffer) */ |
906 |
|
char *fname; |
907 |
|
{ |
908 |
< |
int donorm = normdist && ourview.type == VT_PER; |
908 |
> |
int donorm = normdist & !zisnorm ? 1 : |
909 |
> |
ourview.type == VT_PER & !normdist & zisnorm ? -1 : 0; |
910 |
|
int fd; |
911 |
|
int y; |
639 |
– |
float *zout; |
912 |
|
|
913 |
< |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) { |
914 |
< |
perror(fname); |
643 |
< |
exit(1); |
644 |
< |
} |
645 |
< |
if (donorm |
646 |
< |
&& (zout = (float *)malloc(hresolu*sizeof(float))) == NULL) |
647 |
< |
syserror(); |
913 |
> |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) |
914 |
> |
syserror(fname); |
915 |
|
for (y = vresolu-1; y >= 0; y--) { |
916 |
|
if (donorm) { |
917 |
< |
double vx, yzn2; |
917 |
> |
double vx, yzn2, d; |
918 |
|
register int x; |
919 |
|
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
920 |
|
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
921 |
|
for (x = 0; x < hresolu; x++) { |
922 |
|
vx = (x+.5)/hresolu + ourview.hoff - .5; |
923 |
< |
zout[x] = zscan(y)[x] |
924 |
< |
* sqrt(vx*vx*ourview.hn2 + yzn2); |
923 |
> |
d = sqrt(vx*vx*ourview.hn2 + yzn2); |
924 |
> |
if (donorm > 0) |
925 |
> |
zscan(y)[x] *= d; |
926 |
> |
else |
927 |
> |
zscan(y)[x] /= d; |
928 |
|
} |
659 |
– |
} else |
660 |
– |
zout = zscan(y); |
661 |
– |
if (write(fd, (char *)zout, hresolu*sizeof(float)) |
662 |
– |
< hresolu*sizeof(float)) { |
663 |
– |
perror(fname); |
664 |
– |
exit(1); |
929 |
|
} |
930 |
+ |
if (write(fd, (char *)zscan(y), hresolu*sizeof(float)) |
931 |
+ |
< hresolu*sizeof(float)) |
932 |
+ |
syserror(fname); |
933 |
|
} |
667 |
– |
if (donorm) |
668 |
– |
free((char *)zout); |
934 |
|
close(fd); |
935 |
|
} |
936 |
|
|
937 |
|
|
673 |
– |
isfloat(s) /* see if string is floating number */ |
674 |
– |
register char *s; |
675 |
– |
{ |
676 |
– |
for ( ; *s; s++) |
677 |
– |
if ((*s < '0' || *s > '9') && *s != '.' && *s != '-' |
678 |
– |
&& *s != 'e' && *s != 'E' && *s != '+') |
679 |
– |
return(0); |
680 |
– |
return(1); |
681 |
– |
} |
682 |
– |
|
683 |
– |
|
938 |
|
backfill(x, y) /* fill pixel with background */ |
939 |
|
int x, y; |
940 |
|
{ |
941 |
< |
register BYTE *dest = pscan(y)[x]; |
942 |
< |
|
943 |
< |
copycolr(dest, backcolr); |
941 |
> |
if (averaging) { |
942 |
> |
copycolor(sscan(y)[x], backcolor); |
943 |
> |
wscan(y)[x] = 1; |
944 |
> |
} else |
945 |
> |
copycolr(pscan(y)[x], backcolr); |
946 |
|
zscan(y)[x] = backz; |
947 |
|
} |
948 |
|
|
964 |
|
cp = combuf; |
965 |
|
wp = argv; |
966 |
|
for ( ; ; ) { |
967 |
< |
while (isspace(*cp)) cp++; |
968 |
< |
if (!*cp) break; |
969 |
< |
*wp++ = cp; |
970 |
< |
while (!isspace(*cp)) |
971 |
< |
if (!*cp++) goto done; |
972 |
< |
*cp++ = '\0'; |
967 |
> |
while (isspace(*cp)) /* nullify spaces */ |
968 |
> |
*cp++ = '\0'; |
969 |
> |
if (!*cp) /* all done? */ |
970 |
> |
break; |
971 |
> |
*wp++ = cp; /* add argument to list */ |
972 |
> |
while (*++cp && !isspace(*cp)) |
973 |
> |
; |
974 |
|
} |
718 |
– |
done: |
975 |
|
*wp = NULL; |
976 |
|
/* start process */ |
977 |
|
if ((rval = open_process(PDesc, argv)) < 0) |
978 |
< |
syserror(); |
978 |
> |
syserror(progname); |
979 |
|
if (rval == 0) { |
980 |
|
fprintf(stderr, "%s: command not found\n", argv[0]); |
981 |
|
exit(1); |
1015 |
|
float fbuf[6*(PACKSIZ+1)]; |
1016 |
|
register float *fbp; |
1017 |
|
register int i; |
1018 |
+ |
double vx, vy; |
1019 |
|
|
1020 |
+ |
if (queuesiz == 0) |
1021 |
+ |
return; |
1022 |
|
fbp = fbuf; |
1023 |
|
for (i = 0; i < queuesiz; i++) { |
1024 |
|
viewray(orig, dir, &ourview, |
1043 |
|
fbp[1] *= ourexp; |
1044 |
|
fbp[2] *= ourexp; |
1045 |
|
} |
1046 |
< |
setcolr(pscan(queue[i][1])[queue[i][0]], |
1047 |
< |
fbp[0], fbp[1], fbp[2]); |
1048 |
< |
zscan(queue[i][1])[queue[i][0]] = fbp[3]; |
1046 |
> |
if (averaging) { |
1047 |
> |
setcolor(sscan(queue[i][1])[queue[i][0]], |
1048 |
> |
fbp[0], fbp[1], fbp[2]); |
1049 |
> |
wscan(queue[i][1])[queue[i][0]] = 1; |
1050 |
> |
} else |
1051 |
> |
setcolr(pscan(queue[i][1])[queue[i][0]], |
1052 |
> |
fbp[0], fbp[1], fbp[2]); |
1053 |
> |
if (zisnorm) |
1054 |
> |
zscan(queue[i][1])[queue[i][0]] = fbp[3]; |
1055 |
> |
else { |
1056 |
> |
vx = (queue[i][0]+.5)/hresolu + ourview.hoff - .5; |
1057 |
> |
vy = (queue[i][1]+.5)/vresolu + ourview.voff - .5; |
1058 |
> |
zscan(queue[i][1])[queue[i][0]] = fbp[3] / sqrt(1. + |
1059 |
> |
vx*vx*ourview.hn2 + vy*vy*ourview.vn2); |
1060 |
> |
} |
1061 |
|
fbp += 4; |
1062 |
|
} |
1063 |
|
queuesiz = 0; |
1064 |
|
} |
1065 |
|
|
1066 |
|
|
1067 |
< |
syserror() /* report error and exit */ |
1067 |
> |
syserror(s) /* report error and exit */ |
1068 |
> |
char *s; |
1069 |
|
{ |
1070 |
< |
perror(progname); |
1070 |
> |
perror(s); |
1071 |
|
exit(1); |
1072 |
|
} |