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/* Copyright (c) 1993 Regents of the University of California */ |
1 |
> |
/* Copyright (c) 1994 Regents of the University of California */ |
2 |
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3 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
21 |
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#include "resolu.h" |
22 |
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|
23 |
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#define pscan(y) (ourpict+(y)*hresolu) |
24 |
+ |
#define sscan(y) (ourspict+(y)*hresolu) |
25 |
+ |
#define wscan(y) (ourweigh+(y)*hresolu) |
26 |
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#define zscan(y) (ourzbuf+(y)*hresolu) |
27 |
+ |
#define averaging (ourweigh != NULL) |
28 |
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|
29 |
+ |
#define MAXWT 1000. /* maximum pixel weight (averaging) */ |
30 |
+ |
|
31 |
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#define F_FORE 1 /* fill foreground */ |
32 |
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#define F_BACK 2 /* fill background */ |
33 |
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|
39 |
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|
40 |
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struct position {int x,y; float z;}; |
41 |
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|
42 |
+ |
#define NSTEPS 64 /* number steps in overlap prescan */ |
43 |
+ |
#define MINSTEP 4 /* minimum worthwhile preview step */ |
44 |
+ |
|
45 |
+ |
struct bound {int min,max;}; |
46 |
+ |
|
47 |
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VIEW ourview = STDVIEW; /* desired view */ |
48 |
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int hresolu = 512; /* horizontal resolution */ |
49 |
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int vresolu = 512; /* vertical resolution */ |
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|
52 |
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double zeps = .02; /* allowed z epsilon */ |
53 |
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|
54 |
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COLR *ourpict; /* output picture */ |
54 |
> |
COLR *ourpict; /* output picture (COLR's) */ |
55 |
> |
COLOR *ourspict; /* output pixel sums (averaging) */ |
56 |
> |
float *ourweigh = NULL; /* output pixel weights (averaging) */ |
57 |
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float *ourzbuf; /* corresponding z-buffer */ |
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|
59 |
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char *progname; |
63 |
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extern int backfill(), rcalfill(); /* fill functions */ |
64 |
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int (*fillfunc)() = backfill; /* selected fill function */ |
65 |
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COLR backcolr = BLKCOLR; /* background color */ |
66 |
+ |
COLOR backcolor = BLKCOLOR; /* background color (float) */ |
67 |
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double backz = 0.0; /* background z value */ |
68 |
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int normdist = 1; /* normalized distance? */ |
69 |
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double ourexp = -1; /* output picture exposure */ |
73 |
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int wrongformat = 0; /* input in another format? */ |
74 |
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RESOLU tresolu; /* input resolution */ |
75 |
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double theirexp; /* input picture exposure */ |
76 |
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double theirs2ours[4][4]; /* transformation matrix */ |
76 |
> |
MAT4 theirs2ours; /* transformation matrix */ |
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int hasmatrix = 0; /* has transformation matrix */ |
78 |
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|
79 |
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int PDesc[3] = {-1,-1,-1}; /* rtrace process descriptor */ |
82 |
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int packsiz; /* actual packet size */ |
83 |
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int queuesiz; /* number of pixels pending */ |
84 |
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|
85 |
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extern double movepixel(); |
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|
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|
88 |
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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 |
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int gotvfile = 0; |
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int doavg = -1; |
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char *zfile = NULL; |
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char *err; |
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int i, rval; |
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check(2,"f"); |
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zeps = atof(argv[++i]); |
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break; |
114 |
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case 'a': /* average */ |
115 |
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check(2,NULL); |
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doavg = 1; |
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break; |
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case 'q': /* quick (no avg.) */ |
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check(2,NULL); |
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doavg = 0; |
121 |
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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; |
151 |
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setcolr(backcolr, atof(argv[i+1]), |
151 |
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setcolor(backcolor, atof(argv[i+1]), |
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atof(argv[i+2]), atof(argv[i+3])); |
153 |
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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 userr; |
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if (fillsamp == 1) |
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fillo &= ~F_BACK; |
215 |
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if (doavg < 0) |
216 |
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doavg = (argc-i) > 2; |
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/* set view */ |
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if (err = setview(&ourview)) { |
218 |
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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); |
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/* allocate frame */ |
224 |
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ourpict = (COLR *)bmalloc(hresolu*vresolu*sizeof(COLR)); |
224 |
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if (doavg) { |
225 |
> |
ourspict = (COLOR *)bmalloc(hresolu*vresolu*sizeof(COLOR)); |
226 |
> |
ourweigh = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
227 |
> |
if (ourspict == NULL | ourweigh == NULL) |
228 |
> |
syserror(progname); |
229 |
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} else { |
230 |
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ourpict = (COLR *)bmalloc(hresolu*vresolu*sizeof(COLR)); |
231 |
> |
if (ourpict == NULL) |
232 |
> |
syserror(progname); |
233 |
> |
} |
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ourzbuf = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
235 |
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if (ourpict == NULL || ourzbuf == NULL) |
235 |
> |
if (ourzbuf == NULL) |
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syserror(progname); |
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bzero((char *)ourzbuf, hresolu*vresolu*sizeof(float)); |
238 |
+ |
/* new header */ |
239 |
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newheader("RADIANCE", stdout); |
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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(); |
250 |
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/* aft clipping */ |
251 |
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clipaft(); |
252 |
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/* add to header */ |
253 |
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printargs(argc, argv, stdout); |
254 |
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if (gotvfile) { |
283 |
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{ |
284 |
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char fmt[32]; |
285 |
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|
286 |
< |
if (isformat(s)) { |
287 |
< |
formatval(fmt, s); |
286 |
> |
if (isheadid(s)) |
287 |
> |
return; |
288 |
> |
if (formatval(fmt, s)) { |
289 |
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wrongformat = strcmp(fmt, COLRFMT); |
290 |
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return; |
291 |
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} |
310 |
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COLR *scanin; |
311 |
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float *zin; |
312 |
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struct position *plast; |
313 |
+ |
struct bound *xlim, ylim; |
314 |
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int y; |
315 |
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/* open picture file */ |
316 |
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if ((pfp = fopen(pfile, "r")) == NULL) |
334 |
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} |
335 |
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/* compute transformation */ |
336 |
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hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
337 |
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/* allocate scanlines */ |
294 |
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scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
337 |
> |
/* get z specification or file */ |
338 |
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zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
339 |
< |
plast = (struct position *)calloc(scanlen(&tresolu), |
297 |
< |
sizeof(struct position)); |
298 |
< |
if (scanin == NULL || zin == NULL || plast == NULL) |
339 |
> |
if (zin == NULL) |
340 |
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syserror(progname); |
300 |
– |
/* get z specification or file */ |
341 |
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if ((zfd = open(zspec, O_RDONLY)) == -1) { |
342 |
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double zvalue; |
343 |
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register int x; |
344 |
< |
if (!isfloat(zspec) || (zvalue = atof(zspec)) <= 0.0) |
344 |
> |
if (!isflt(zspec) || (zvalue = atof(zspec)) <= 0.0) |
345 |
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syserror(zspec); |
346 |
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for (x = scanlen(&tresolu); x-- > 0; ) |
347 |
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zin[x] = zvalue; |
348 |
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} |
349 |
< |
/* load image */ |
350 |
< |
for (y = 0; y < numscans(&tresolu); y++) { |
349 |
> |
/* compute transferrable perimeter */ |
350 |
> |
xlim = (struct bound *)malloc(numscans(&tresolu)*sizeof(struct bound)); |
351 |
> |
if (xlim == NULL) |
352 |
> |
syserror(progname); |
353 |
> |
if (!getperim(xlim, &ylim, zin, zfd)) { /* overlapping area? */ |
354 |
> |
free((char *)zin); |
355 |
> |
free((char *)xlim); |
356 |
> |
if (zfd != -1) |
357 |
> |
close(zfd); |
358 |
> |
fclose(pfp); |
359 |
> |
return; |
360 |
> |
} |
361 |
> |
/* allocate scanlines */ |
362 |
> |
scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
363 |
> |
plast = (struct position *)calloc(scanlen(&tresolu), |
364 |
> |
sizeof(struct position)); |
365 |
> |
if (scanin == NULL | plast == NULL) |
366 |
> |
syserror(progname); |
367 |
> |
/* skip to starting point */ |
368 |
> |
for (y = 0; y < ylim.min; y++) |
369 |
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if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
370 |
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fprintf(stderr, "%s: read error\n", pfile); |
371 |
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exit(1); |
372 |
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} |
373 |
< |
if (zfd != -1 && read(zfd,(char *)zin, |
374 |
< |
scanlen(&tresolu)*sizeof(float)) |
375 |
< |
< scanlen(&tresolu)*sizeof(float)) { |
376 |
< |
fprintf(stderr, "%s: read error\n", zspec); |
373 |
> |
if (zfd != -1 && lseek(zfd, |
374 |
> |
(long)ylim.min*scanlen(&tresolu)*sizeof(float), 0) < 0) |
375 |
> |
syserror(zspec); |
376 |
> |
/* load image */ |
377 |
> |
for (y = ylim.min; y <= ylim.max; y++) { |
378 |
> |
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
379 |
> |
fprintf(stderr, "%s: read error\n", pfile); |
380 |
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exit(1); |
381 |
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} |
382 |
< |
addscanline(y, scanin, zin, plast); |
382 |
> |
if (zfd != -1 && read(zfd, (char *)zin, |
383 |
> |
scanlen(&tresolu)*sizeof(float)) |
384 |
> |
< scanlen(&tresolu)*sizeof(float)) |
385 |
> |
syserror(zspec); |
386 |
> |
addscanline(xlim+y, y, scanin, zin, plast); |
387 |
|
} |
388 |
|
/* clean up */ |
389 |
+ |
free((char *)xlim); |
390 |
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free((char *)scanin); |
391 |
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free((char *)zin); |
392 |
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free((char *)plast); |
397 |
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|
398 |
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|
399 |
|
pixform(xfmat, vw1, vw2) /* compute view1 to view2 matrix */ |
400 |
< |
register double xfmat[4][4]; |
400 |
> |
register MAT4 xfmat; |
401 |
|
register VIEW *vw1, *vw2; |
402 |
|
{ |
403 |
|
double m4t[4][4]; |
437 |
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} |
438 |
|
|
439 |
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|
440 |
< |
addscanline(y, pline, zline, lasty) /* add scanline to output */ |
440 |
> |
addscanline(xl, y, pline, zline, lasty) /* add scanline to output */ |
441 |
> |
struct bound *xl; |
442 |
|
int y; |
443 |
|
COLR *pline; |
444 |
|
float *zline; |
446 |
|
{ |
447 |
|
FVECT pos; |
448 |
|
struct position lastx, newpos; |
449 |
+ |
double wt; |
450 |
|
register int x; |
451 |
|
|
452 |
|
lastx.z = 0; |
453 |
< |
for (x = scanlen(&tresolu); x-- > 0; ) { |
453 |
> |
for (x = xl->max; x >= xl->min; x--) { |
454 |
|
pix2loc(pos, &tresolu, x, y); |
455 |
|
pos[2] = zline[x]; |
456 |
< |
if (movepixel(pos) < 0) { |
456 |
> |
if ((wt = movepixel(pos)) <= FTINY) { |
457 |
|
lasty[x].z = lastx.z = 0; /* mark invalid */ |
458 |
|
continue; |
459 |
|
} |
460 |
+ |
/* add pixel to our image */ |
461 |
|
newpos.x = pos[0] * hresolu; |
462 |
|
newpos.y = pos[1] * vresolu; |
463 |
|
newpos.z = zline[x]; |
464 |
< |
/* add pixel to our image */ |
465 |
< |
if (pos[0] >= 0 && newpos.x < hresolu |
466 |
< |
&& pos[1] >= 0 && newpos.y < vresolu) { |
467 |
< |
addpixel(&newpos, &lastx, &lasty[x], pline[x], pos[2]); |
399 |
< |
lasty[x].x = lastx.x = newpos.x; |
400 |
< |
lasty[x].y = lastx.y = newpos.y; |
401 |
< |
lasty[x].z = lastx.z = newpos.z; |
402 |
< |
} else |
403 |
< |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
464 |
> |
addpixel(&newpos, &lastx, &lasty[x], pline[x], wt, pos[2]); |
465 |
> |
lasty[x].x = lastx.x = newpos.x; |
466 |
> |
lasty[x].y = lastx.y = newpos.y; |
467 |
> |
lasty[x].z = lastx.z = newpos.z; |
468 |
|
} |
469 |
|
} |
470 |
|
|
471 |
|
|
472 |
< |
addpixel(p0, p1, p2, pix, z) /* fill in pixel parallelogram */ |
472 |
> |
addpixel(p0, p1, p2, pix, w, z) /* fill in pixel parallelogram */ |
473 |
|
struct position *p0, *p1, *p2; |
474 |
|
COLR pix; |
475 |
+ |
double w; |
476 |
|
double z; |
477 |
|
{ |
478 |
|
double zt = 2.*zeps*p0->z; /* threshold */ |
479 |
+ |
COLOR pval; /* converted+weighted pixel */ |
480 |
|
int s1x, s1y, s2x, s2y; /* step sizes */ |
481 |
|
int l1, l2, c1, c2; /* side lengths and counters */ |
482 |
|
int p1isy; /* p0p1 along y? */ |
490 |
|
l1 = ABS(s1x); |
491 |
|
if (p1isy = (ABS(s1y) > l1)) |
492 |
|
l1 = ABS(s1y); |
493 |
+ |
else if (l1 < 1) |
494 |
+ |
l1 = 1; |
495 |
|
} else { |
496 |
|
l1 = s1x = s1y = 1; |
497 |
|
p1isy = -1; |
507 |
|
if (p1isy != 0 && ABS(s2x) > l2) |
508 |
|
l2 = ABS(s2x); |
509 |
|
} |
510 |
+ |
if (l2 < 1) |
511 |
+ |
l2 = 1; |
512 |
|
} else |
513 |
|
l2 = s2x = s2y = 1; |
514 |
|
/* fill the parallelogram */ |
515 |
+ |
if (averaging) { |
516 |
+ |
colr_color(pval, pix); |
517 |
+ |
scalecolor(pval, w); |
518 |
+ |
} |
519 |
|
for (c1 = l1; c1-- > 0; ) { |
520 |
|
x1 = p0->x + c1*s1x/l1; |
521 |
|
y1 = p0->y + c1*s1y/l1; |
526 |
|
y = y1 + c2*s2y/l2; |
527 |
|
if (y < 0 || y >= vresolu) |
528 |
|
continue; |
529 |
< |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
529 |
> |
if (averaging) { |
530 |
> |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
531 |
|
> zeps*zscan(y)[x]) { |
532 |
< |
zscan(y)[x] = z; |
532 |
> |
copycolor(sscan(y)[x], pval); |
533 |
> |
wscan(y)[x] = w; |
534 |
> |
zscan(y)[x] = z; |
535 |
> |
} else if (z-zscan(y)[x] <= zeps*zscan(y)[x]) { |
536 |
> |
addcolor(sscan(y)[x], pval); |
537 |
> |
wscan(y)[x] += w; |
538 |
> |
} |
539 |
> |
} else if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
540 |
> |
> zeps*zscan(y)[x]) { |
541 |
|
copycolr(pscan(y)[x], pix); |
542 |
+ |
zscan(y)[x] = z; |
543 |
|
} |
544 |
|
} |
545 |
|
} |
546 |
|
} |
547 |
|
|
548 |
|
|
549 |
+ |
double |
550 |
|
movepixel(pos) /* reposition image point */ |
551 |
< |
FVECT pos; |
551 |
> |
register FVECT pos; |
552 |
|
{ |
553 |
< |
FVECT pt, direc; |
553 |
> |
FVECT pt, tdir, odir; |
554 |
> |
double d; |
555 |
> |
register int i; |
556 |
|
|
557 |
|
if (pos[2] <= 0) /* empty pixel */ |
558 |
< |
return(-1); |
559 |
< |
if (hasmatrix) { |
558 |
> |
return(0); |
559 |
> |
if (!averaging && hasmatrix) { |
560 |
|
pos[0] += theirview.hoff - .5; |
561 |
|
pos[1] += theirview.voff - .5; |
562 |
|
if (theirview.type == VT_PER) { |
563 |
< |
if (normdist) /* adjust for eye-ray distance */ |
564 |
< |
pos[2] /= sqrt( 1. |
565 |
< |
+ pos[0]*pos[0]*theirview.hn2 |
479 |
< |
+ pos[1]*pos[1]*theirview.vn2 ); |
563 |
> |
if (normdist) /* adjust distance */ |
564 |
> |
pos[2] /= sqrt(1. + pos[0]*pos[0]*theirview.hn2 |
565 |
> |
+ pos[1]*pos[1]*theirview.vn2); |
566 |
|
pos[0] *= pos[2]; |
567 |
|
pos[1] *= pos[2]; |
568 |
|
} |
569 |
|
multp3(pos, pos, theirs2ours); |
570 |
|
if (pos[2] <= 0) |
571 |
< |
return(-1); |
571 |
> |
return(0); |
572 |
|
if (ourview.type == VT_PER) { |
573 |
|
pos[0] /= pos[2]; |
574 |
|
pos[1] /= pos[2]; |
575 |
|
} |
576 |
|
pos[0] += .5 - ourview.hoff; |
577 |
|
pos[1] += .5 - ourview.voff; |
578 |
+ |
} else { |
579 |
+ |
if (viewray(pt, tdir, &theirview, pos[0], pos[1]) < -FTINY) |
580 |
+ |
return(0); |
581 |
+ |
if (!normdist && theirview.type == VT_PER) /* adjust */ |
582 |
+ |
pos[2] *= sqrt(1. + pos[0]*pos[0]*theirview.hn2 |
583 |
+ |
+ pos[1]*pos[1]*theirview.vn2); |
584 |
+ |
pt[0] += tdir[0]*pos[2]; |
585 |
+ |
pt[1] += tdir[1]*pos[2]; |
586 |
+ |
pt[2] += tdir[2]*pos[2]; |
587 |
+ |
viewloc(pos, &ourview, pt); |
588 |
+ |
if (pos[2] <= 0) |
589 |
+ |
return(0); |
590 |
+ |
} |
591 |
+ |
if (pos[0] < 0 || pos[0] >= 1-FTINY || pos[1] < 0 || pos[1] >= 1-FTINY) |
592 |
|
return(0); |
593 |
+ |
if (!averaging) |
594 |
+ |
return(1); |
595 |
+ |
if (ourview.type == VT_PAR) /* compute our direction */ |
596 |
+ |
VCOPY(odir, ourview.vdir); |
597 |
+ |
else |
598 |
+ |
for (i = 0; i < 3; i++) |
599 |
+ |
odir[i] = (pt[i] - ourview.vp[i])/pos[2]; |
600 |
+ |
d = DOT(odir,tdir); /* compute pixel weight */ |
601 |
+ |
if (d >= 1.-1./MAXWT/MAXWT) |
602 |
+ |
return(MAXWT); /* clip to maximum weight */ |
603 |
+ |
return(1./sqrt(1.-d)); |
604 |
+ |
} |
605 |
+ |
|
606 |
+ |
|
607 |
+ |
getperim(xl, yl, zline, zfd) /* compute overlapping image area */ |
608 |
+ |
register struct bound *xl; |
609 |
+ |
struct bound *yl; |
610 |
+ |
float *zline; |
611 |
+ |
int zfd; |
612 |
+ |
{ |
613 |
+ |
int step; |
614 |
+ |
FVECT pos; |
615 |
+ |
register int x, y; |
616 |
+ |
/* set up step size */ |
617 |
+ |
if (scanlen(&tresolu) < numscans(&tresolu)) |
618 |
+ |
step = scanlen(&tresolu)/NSTEPS; |
619 |
+ |
else |
620 |
+ |
step = numscans(&tresolu)/NSTEPS; |
621 |
+ |
if (step < MINSTEP) { /* not worth cropping? */ |
622 |
+ |
yl->min = 0; |
623 |
+ |
yl->max = numscans(&tresolu) - 1; |
624 |
+ |
x = scanlen(&tresolu) - 1; |
625 |
+ |
for (y = numscans(&tresolu); y--; ) { |
626 |
+ |
xl[y].min = 0; |
627 |
+ |
xl[y].max = x; |
628 |
+ |
} |
629 |
+ |
return(1); |
630 |
|
} |
631 |
< |
if (viewray(pt, direc, &theirview, pos[0], pos[1]) < 0) |
632 |
< |
return(-1); |
633 |
< |
pt[0] += direc[0]*pos[2]; |
634 |
< |
pt[1] += direc[1]*pos[2]; |
635 |
< |
pt[2] += direc[2]*pos[2]; |
636 |
< |
viewloc(pos, &ourview, pt); |
637 |
< |
if (pos[2] <= 0) |
638 |
< |
return(-1); |
639 |
< |
return(0); |
631 |
> |
yl->min = 32000; yl->max = 0; /* search for points on image */ |
632 |
> |
for (y = step - 1; y < numscans(&tresolu); y += step) { |
633 |
> |
if (zfd != -1) { |
634 |
> |
if (lseek(zfd, (long)y*scanlen(&tresolu)*sizeof(float), |
635 |
> |
0) < 0) |
636 |
> |
syserror("lseek"); |
637 |
> |
if (read(zfd, (char *)zline, |
638 |
> |
scanlen(&tresolu)*sizeof(float)) |
639 |
> |
< scanlen(&tresolu)*sizeof(float)) |
640 |
> |
syserror("read"); |
641 |
> |
} |
642 |
> |
xl[y].min = 32000; xl[y].max = 0; /* x max */ |
643 |
> |
for (x = scanlen(&tresolu); (x -= step) > 0; ) { |
644 |
> |
pix2loc(pos, &tresolu, x, y); |
645 |
> |
pos[2] = zline[x]; |
646 |
> |
if (movepixel(pos) > FTINY) { |
647 |
> |
xl[y].max = x + step - 1; |
648 |
> |
xl[y].min = x - step + 1; /* x min */ |
649 |
> |
if (xl[y].min < 0) |
650 |
> |
xl[y].min = 0; |
651 |
> |
for (x = step - 1; x < xl[y].max; x += step) { |
652 |
> |
pix2loc(pos, &tresolu, x, y); |
653 |
> |
pos[2] = zline[x]; |
654 |
> |
if (movepixel(pos) > FTINY) { |
655 |
> |
xl[y].min = x - step + 1; |
656 |
> |
break; |
657 |
> |
} |
658 |
> |
} |
659 |
> |
if (y < yl->min) /* y limits */ |
660 |
> |
yl->min = y - step + 1; |
661 |
> |
yl->max = y + step - 1; |
662 |
> |
break; |
663 |
> |
} |
664 |
> |
} |
665 |
> |
/* fill in between */ |
666 |
> |
if (y < step) { |
667 |
> |
xl[y-1].min = xl[y].min; |
668 |
> |
xl[y-1].max = xl[y].max; |
669 |
> |
} else { |
670 |
> |
if (xl[y].min < xl[y-step].min) |
671 |
> |
xl[y-1].min = xl[y].min; |
672 |
> |
else |
673 |
> |
xl[y-1].min = xl[y-step].min; |
674 |
> |
if (xl[y].max > xl[y-step].max) |
675 |
> |
xl[y-1].max = xl[y].max; |
676 |
> |
else |
677 |
> |
xl[y-1].max = xl[y-step].max; |
678 |
> |
} |
679 |
> |
for (x = 2; x < step; x++) |
680 |
> |
copystruct(xl+y-x, xl+y-1); |
681 |
> |
} |
682 |
> |
if (yl->max >= numscans(&tresolu)) |
683 |
> |
yl->max = numscans(&tresolu) - 1; |
684 |
> |
y -= step; |
685 |
> |
for (x = numscans(&tresolu) - 1; x > y; x--) /* fill bottom rows */ |
686 |
> |
copystruct(xl+x, xl+y); |
687 |
> |
return(yl->max >= yl->min); |
688 |
|
} |
689 |
|
|
690 |
|
|
758 |
|
< zscan(y)[xback] ) ) { |
759 |
|
if (samp > 0 && ABS(x-xback) >= samp) |
760 |
|
goto fillit; |
761 |
< |
copycolr(pscan(y)[x],pscan(y)[xback]); |
761 |
> |
if (averaging) { |
762 |
> |
copycolor(sscan(y)[x], |
763 |
> |
sscan(y)[xback]); |
764 |
> |
wscan(y)[x] = wscan(y)[xback]; |
765 |
> |
} else |
766 |
> |
copycolr(pscan(y)[x], |
767 |
> |
pscan(y)[xback]); |
768 |
|
zscan(y)[x] = zscan(y)[xback]; |
769 |
|
} else { |
770 |
|
if (samp > 0 && ABS(y-yback[x]) > samp) |
771 |
|
goto fillit; |
772 |
< |
copycolr(pscan(y)[x],pscan(yback[x])[x]); |
772 |
> |
if (averaging) { |
773 |
> |
copycolor(sscan(y)[x], |
774 |
> |
sscan(yback[x])[x]); |
775 |
> |
wscan(y)[x] = |
776 |
> |
wscan(yback[x])[x]; |
777 |
> |
} else |
778 |
> |
copycolr(pscan(y)[x], |
779 |
> |
pscan(yback[x])[x]); |
780 |
|
zscan(y)[x] = zscan(yback[x])[x]; |
781 |
|
} |
782 |
|
continue; |
808 |
|
} |
809 |
|
|
810 |
|
|
811 |
+ |
clipaft() /* perform aft clipping as indicated */ |
812 |
+ |
{ |
813 |
+ |
register int x, y; |
814 |
+ |
double tstdist; |
815 |
+ |
double yzn2, vx; |
816 |
+ |
|
817 |
+ |
if (ourview.vaft <= FTINY) |
818 |
+ |
return; |
819 |
+ |
tstdist = ourview.vaft - ourview.vfore; |
820 |
+ |
for (y = 0; y < vresolu; y++) { |
821 |
+ |
if (ourview.type == VT_PER) { /* adjust distance */ |
822 |
+ |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
823 |
+ |
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
824 |
+ |
tstdist = (ourview.vaft - ourview.vfore)*sqrt(yzn2); |
825 |
+ |
} |
826 |
+ |
for (x = 0; x < hresolu; x++) |
827 |
+ |
if (zscan(y)[x] > tstdist) { |
828 |
+ |
if (ourview.type == VT_PER) { |
829 |
+ |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
830 |
+ |
if (zscan(y)[x] <= (ourview.vaft - |
831 |
+ |
ourview.vfore) * |
832 |
+ |
sqrt(vx*vx*ourview.hn2 + yzn2)) |
833 |
+ |
continue; |
834 |
+ |
} |
835 |
+ |
if (averaging) |
836 |
+ |
bzero(sscan(y)[x], sizeof(COLOR)); |
837 |
+ |
else |
838 |
+ |
bzero(pscan(y)[x], sizeof(COLR)); |
839 |
+ |
zscan(y)[x] = 0.0; |
840 |
+ |
} |
841 |
+ |
} |
842 |
+ |
} |
843 |
+ |
|
844 |
+ |
|
845 |
|
writepicture() /* write out picture */ |
846 |
|
{ |
847 |
|
int y; |
848 |
+ |
register int x; |
849 |
+ |
double d; |
850 |
|
|
851 |
|
fprtresolu(hresolu, vresolu, stdout); |
852 |
|
for (y = vresolu-1; y >= 0; y--) |
853 |
< |
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
853 |
> |
if (averaging) { |
854 |
> |
for (x = 0; x < hresolu; x++) { /* average pixels */ |
855 |
> |
d = 1./wscan(y)[x]; |
856 |
> |
scalecolor(sscan(y)[x], d); |
857 |
> |
wscan(y)[x] = 1; |
858 |
> |
} |
859 |
> |
if (fwritescan(sscan(y), hresolu, stdout) < 0) |
860 |
> |
syserror(progname); |
861 |
> |
} else if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
862 |
|
syserror(progname); |
863 |
|
} |
864 |
|
|
899 |
|
} |
900 |
|
|
901 |
|
|
660 |
– |
isfloat(s) /* see if string is floating number */ |
661 |
– |
register char *s; |
662 |
– |
{ |
663 |
– |
for ( ; *s; s++) |
664 |
– |
if ((*s < '0' || *s > '9') && *s != '.' && *s != '-' |
665 |
– |
&& *s != 'e' && *s != 'E' && *s != '+') |
666 |
– |
return(0); |
667 |
– |
return(1); |
668 |
– |
} |
669 |
– |
|
670 |
– |
|
902 |
|
backfill(x, y) /* fill pixel with background */ |
903 |
|
int x, y; |
904 |
|
{ |
905 |
< |
register BYTE *dest = pscan(y)[x]; |
906 |
< |
|
907 |
< |
copycolr(dest, backcolr); |
905 |
> |
if (averaging) { |
906 |
> |
copycolor(sscan(y)[x], backcolor); |
907 |
> |
wscan(y)[x] = 1; |
908 |
> |
} else |
909 |
> |
copycolr(pscan(y)[x], backcolr); |
910 |
|
zscan(y)[x] = backz; |
911 |
|
} |
912 |
|
|
1006 |
|
fbp[1] *= ourexp; |
1007 |
|
fbp[2] *= ourexp; |
1008 |
|
} |
1009 |
< |
setcolr(pscan(queue[i][1])[queue[i][0]], |
1010 |
< |
fbp[0], fbp[1], fbp[2]); |
1009 |
> |
if (averaging) { |
1010 |
> |
setcolor(sscan(queue[i][1])[queue[i][0]], |
1011 |
> |
fbp[0], fbp[1], fbp[2]); |
1012 |
> |
wscan(queue[i][1])[queue[i][0]] = 1; |
1013 |
> |
} else |
1014 |
> |
setcolr(pscan(queue[i][1])[queue[i][0]], |
1015 |
> |
fbp[0], fbp[1], fbp[2]); |
1016 |
|
zscan(queue[i][1])[queue[i][0]] = fbp[3]; |
1017 |
|
fbp += 4; |
1018 |
|
} |