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/* Copyright (c) 1991 Regents of the University of California */ |
1 |
> |
/* Copyright (c) 1994 Regents of the University of California */ |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
12 |
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#include "standard.h" |
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|
15 |
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#include <fcntl.h> |
16 |
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|
15 |
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#include <ctype.h> |
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|
17 |
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#include "view.h" |
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|
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#include "resolu.h" |
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|
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< |
#ifndef BSD |
26 |
< |
#define vfork fork |
27 |
< |
#endif |
23 |
> |
#define LOG2 0.69314718055994530942 |
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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) |
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#define zscan(y) (ourzbuf+(y)*hresolu) |
29 |
+ |
#define averaging (ourweigh != NULL) |
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|
31 |
+ |
#define MAXWT 1000. /* maximum pixel weight (averaging) */ |
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+ |
|
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#define F_FORE 1 /* fill foreground */ |
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#define F_BACK 2 /* fill background */ |
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|
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#define PACKSIZ 256 /* max. calculation packet size */ |
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|
38 |
< |
#define RTCOM "rtrace -h- -ovl -fff" |
38 |
> |
#define RTCOM "rtrace -h- -ovl -fff " |
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|
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#define ABS(x) ((x)>0?(x):-(x)) |
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|
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struct position {int x,y; float z;}; |
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|
44 |
+ |
#define NSTEPS 64 /* number steps in overlap prescan */ |
45 |
+ |
#define MINSTEP 4 /* minimum worthwhile preview step */ |
46 |
+ |
|
47 |
+ |
struct bound {int min,max;}; |
48 |
+ |
|
49 |
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VIEW ourview = STDVIEW; /* desired view */ |
50 |
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int hresolu = 512; /* horizontal resolution */ |
51 |
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int vresolu = 512; /* vertical resolution */ |
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|
54 |
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double zeps = .02; /* allowed z epsilon */ |
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|
56 |
< |
COLR *ourpict; /* output picture */ |
56 |
> |
COLR *ourpict; /* output picture (COLR's) */ |
57 |
> |
COLOR *ourspict; /* output pixel sums (averaging) */ |
58 |
> |
float *ourweigh = NULL; /* output pixel weights (averaging) */ |
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float *ourzbuf; /* corresponding z-buffer */ |
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|
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char *progname; |
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extern int backfill(), rcalfill(); /* fill functions */ |
66 |
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int (*fillfunc)() = backfill; /* selected fill function */ |
67 |
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COLR backcolr = BLKCOLR; /* background color */ |
68 |
+ |
COLOR backcolor = BLKCOLOR; /* background color (float) */ |
69 |
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double backz = 0.0; /* background z value */ |
70 |
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int normdist = 1; /* normalized distance? */ |
71 |
< |
double ourexp = -1; /* output picture exposure */ |
71 |
> |
double ourexp = -1; /* original picture exposure */ |
72 |
> |
int expadj = 0; /* exposure adjustment (f-stops) */ |
73 |
> |
double rexpadj = 1; /* real exposure adjustment */ |
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|
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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 */ |
79 |
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double theirexp; /* input picture exposure */ |
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< |
double theirs2ours[4][4]; /* transformation matrix */ |
80 |
> |
MAT4 theirs2ours; /* transformation matrix */ |
81 |
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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 */ |
86 |
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int packsiz; /* actual packet size */ |
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int queuesiz; /* number of pixels pending */ |
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|
89 |
+ |
extern double movepixel(); |
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|
91 |
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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 |
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int gotvfile = 0; |
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+ |
int doavg = -1; |
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char *zfile = NULL; |
102 |
+ |
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; |
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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"); |
117 |
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expcomp = argv[++i]; |
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break; |
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case 't': /* threshold */ |
120 |
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check(2,"f"); |
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zeps = atof(argv[++i]); |
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break; |
123 |
+ |
case 'a': /* average */ |
124 |
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check(2,NULL); |
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doavg = 1; |
126 |
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break; |
127 |
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case 'q': /* quick (no avg.) */ |
128 |
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check(2,NULL); |
129 |
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doavg = 0; |
130 |
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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; |
160 |
< |
setcolr(backcolr, atof(argv[i+1]), |
160 |
> |
setcolor(backcolor, atof(argv[i+1]), |
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atof(argv[i+2]), atof(argv[i+3])); |
162 |
+ |
setcolr(backcolr, colval(backcolor,RED), |
163 |
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colval(backcolor,GRN), |
164 |
+ |
colval(backcolor,BLU)); |
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i += 3; |
166 |
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break; |
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case 'z': /* z value */ |
191 |
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vresolu = atoi(argv[++i]); |
192 |
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break; |
193 |
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case 'p': /* pixel aspect */ |
194 |
< |
check(2,"f"); |
194 |
> |
if (argv[i][2] != 'a') |
195 |
> |
goto badopt; |
196 |
> |
check(3,"f"); |
197 |
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pixaspect = atof(argv[++i]); |
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break; |
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case 'v': /* view file */ |
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goto badopt; |
202 |
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check(3,"s"); |
203 |
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gotvfile = viewfile(argv[++i], &ourview, 0, 0); |
204 |
< |
if (gotvfile < 0) { |
205 |
< |
perror(argv[i]); |
206 |
< |
exit(1); |
175 |
< |
} else if (gotvfile == 0) { |
204 |
> |
if (gotvfile < 0) |
205 |
> |
syserror(argv[i]); |
206 |
> |
else if (gotvfile == 0) { |
207 |
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fprintf(stderr, "%s: bad view file\n", |
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argv[i]); |
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exit(1); |
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goto userr; |
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if (fillsamp == 1) |
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fillo &= ~F_BACK; |
224 |
+ |
if (doavg < 0) |
225 |
+ |
doavg = (argc-i) > 2; |
226 |
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if (expcomp != NULL) |
227 |
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if (expcomp[0] == '+' | expcomp[0] == '-') { |
228 |
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expadj = atof(expcomp) + (expcomp[0]=='+' ? .5 : -.5); |
229 |
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if (doavg) |
230 |
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rexpadj = pow(2.0, atof(expcomp)); |
231 |
+ |
else |
232 |
+ |
rexpadj = pow(2.0, (double)expadj); |
233 |
+ |
} else { |
234 |
+ |
if (!isflt(expcomp)) |
235 |
+ |
goto userr; |
236 |
+ |
rexpadj = atof(expcomp); |
237 |
+ |
expadj = log(rexpadj)/LOG2 + (rexpadj>1 ? .5 : -.5); |
238 |
+ |
if (!doavg) |
239 |
+ |
rexpadj = pow(2.0, (double)expadj); |
240 |
+ |
} |
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/* set view */ |
242 |
< |
if (err = setview(&ourview)) { |
242 |
> |
if ((err = setview(&ourview)) != NULL) { |
243 |
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fprintf(stderr, "%s: %s\n", progname, err); |
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exit(1); |
245 |
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} |
246 |
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normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu); |
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/* allocate frame */ |
248 |
< |
ourpict = (COLR *)malloc(hresolu*vresolu*sizeof(COLR)); |
249 |
< |
ourzbuf = (float *)calloc(hresolu*vresolu,sizeof(float)); |
250 |
< |
if (ourpict == NULL || ourzbuf == NULL) |
251 |
< |
syserror(); |
248 |
> |
if (doavg) { |
249 |
> |
ourspict = (COLOR *)bmalloc(hresolu*vresolu*sizeof(COLOR)); |
250 |
> |
ourweigh = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
251 |
> |
if (ourspict == NULL | ourweigh == NULL) |
252 |
> |
syserror(progname); |
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> |
} else { |
254 |
> |
ourpict = (COLR *)bmalloc(hresolu*vresolu*sizeof(COLR)); |
255 |
> |
if (ourpict == NULL) |
256 |
> |
syserror(progname); |
257 |
> |
} |
258 |
> |
ourzbuf = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
259 |
> |
if (ourzbuf == NULL) |
260 |
> |
syserror(progname); |
261 |
> |
bzero((char *)ourzbuf, hresolu*vresolu*sizeof(float)); |
262 |
> |
/* new header */ |
263 |
> |
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 */ |
273 |
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caldone(); |
274 |
+ |
/* aft clipping */ |
275 |
+ |
clipaft(); |
276 |
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/* add to header */ |
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printargs(argc, argv, stdout); |
278 |
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if (gotvfile) { |
280 |
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fprintview(&ourview, stdout); |
281 |
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putc('\n', stdout); |
282 |
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} |
283 |
< |
if (pixaspect < .99 || pixaspect > 1.01) |
283 |
> |
if (pixaspect < .99 | pixaspect > 1.01) |
284 |
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fputaspect(pixaspect, stdout); |
285 |
< |
if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
285 |
> |
if (ourexp > 0) |
286 |
> |
ourexp *= rexpadj; |
287 |
> |
else |
288 |
> |
ourexp = rexpadj; |
289 |
> |
if (ourexp < .995 | ourexp > 1.005) |
290 |
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fputexpos(ourexp, stdout); |
291 |
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fputformat(COLRFMT, stdout); |
292 |
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putc('\n', stdout); |
299 |
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exit(0); |
300 |
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userr: |
301 |
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fprintf(stderr, |
302 |
< |
"Usage: %s [view opts][-t eps][-z zout][-fT][-n] pfile zspec ..\n", |
302 |
> |
"Usage: %s [view opts][-t eps][-z zout][-e spec][-a|-q][-fT][-n] pfile zspec ..\n", |
303 |
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progname); |
304 |
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exit(1); |
305 |
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#undef check |
309 |
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headline(s) /* process header string */ |
310 |
|
char *s; |
311 |
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{ |
246 |
– |
static char *altname[] = {VIEWSTR,"rpict","rview","pinterp",NULL}; |
247 |
– |
register char **an; |
312 |
|
char fmt[32]; |
313 |
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|
314 |
< |
if (isformat(s)) { |
315 |
< |
formatval(fmt, s); |
314 |
> |
if (isheadid(s)) |
315 |
> |
return; |
316 |
> |
if (formatval(fmt, s)) { |
317 |
|
wrongformat = strcmp(fmt, COLRFMT); |
318 |
|
return; |
319 |
|
} |
324 |
|
theirexp *= exposval(s); |
325 |
|
return; |
326 |
|
} |
327 |
< |
for (an = altname; *an != NULL; an++) |
328 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
264 |
< |
if (sscanview(&theirview, s+strlen(*an)) > 0) |
265 |
< |
gotview++; |
266 |
< |
break; |
267 |
< |
} |
327 |
> |
if (isview(s) && sscanview(&theirview, s) > 0) |
328 |
> |
gotview++; |
329 |
|
} |
330 |
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|
331 |
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|
338 |
|
COLR *scanin; |
339 |
|
float *zin; |
340 |
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struct position *plast; |
341 |
+ |
struct bound *xlim, ylim; |
342 |
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int y; |
343 |
|
/* open picture file */ |
344 |
< |
if ((pfp = fopen(pfile, "r")) == NULL) { |
345 |
< |
perror(pfile); |
284 |
< |
exit(1); |
285 |
< |
} |
344 |
> |
if ((pfp = fopen(pfile, "r")) == NULL) |
345 |
> |
syserror(pfile); |
346 |
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/* get header with exposure and view */ |
347 |
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theirexp = 1.0; |
348 |
|
gotview = 0; |
362 |
|
} |
363 |
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/* compute transformation */ |
364 |
|
hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
305 |
– |
/* allocate scanlines */ |
306 |
– |
scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
307 |
– |
zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
308 |
– |
plast = (struct position *)calloc(scanlen(&tresolu), |
309 |
– |
sizeof(struct position)); |
310 |
– |
if (scanin == NULL || zin == NULL || plast == NULL) |
311 |
– |
syserror(); |
365 |
|
/* get z specification or file */ |
366 |
+ |
zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
367 |
+ |
if (zin == NULL) |
368 |
+ |
syserror(progname); |
369 |
|
if ((zfd = open(zspec, O_RDONLY)) == -1) { |
370 |
|
double zvalue; |
371 |
|
register int x; |
372 |
< |
if (!isfloat(zspec) || (zvalue = atof(zspec)) <= 0.0) { |
373 |
< |
perror(zspec); |
318 |
< |
exit(1); |
319 |
< |
} |
372 |
> |
if (!isflt(zspec) || (zvalue = atof(zspec)) <= 0.0) |
373 |
> |
syserror(zspec); |
374 |
|
for (x = scanlen(&tresolu); x-- > 0; ) |
375 |
|
zin[x] = zvalue; |
376 |
|
} |
377 |
< |
/* load image */ |
378 |
< |
for (y = 0; y < numscans(&tresolu); y++) { |
377 |
> |
/* compute transferrable perimeter */ |
378 |
> |
xlim = (struct bound *)malloc(numscans(&tresolu)*sizeof(struct bound)); |
379 |
> |
if (xlim == NULL) |
380 |
> |
syserror(progname); |
381 |
> |
if (!getperim(xlim, &ylim, zin, zfd)) { /* overlapping area? */ |
382 |
> |
free((char *)zin); |
383 |
> |
free((char *)xlim); |
384 |
> |
if (zfd != -1) |
385 |
> |
close(zfd); |
386 |
> |
fclose(pfp); |
387 |
> |
return; |
388 |
> |
} |
389 |
> |
/* allocate scanlines */ |
390 |
> |
scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
391 |
> |
plast = (struct position *)calloc(scanlen(&tresolu), |
392 |
> |
sizeof(struct position)); |
393 |
> |
if (scanin == NULL | plast == NULL) |
394 |
> |
syserror(progname); |
395 |
> |
/* skip to starting point */ |
396 |
> |
for (y = 0; y < ylim.min; y++) |
397 |
|
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
398 |
|
fprintf(stderr, "%s: read error\n", pfile); |
399 |
|
exit(1); |
400 |
|
} |
401 |
< |
if (zfd != -1 && read(zfd,(char *)zin, |
402 |
< |
scanlen(&tresolu)*sizeof(float)) |
403 |
< |
< scanlen(&tresolu)*sizeof(float)) { |
404 |
< |
fprintf(stderr, "%s: read error\n", zspec); |
401 |
> |
if (zfd != -1 && lseek(zfd, |
402 |
> |
(long)ylim.min*scanlen(&tresolu)*sizeof(float), 0) < 0) |
403 |
> |
syserror(zspec); |
404 |
> |
/* load image */ |
405 |
> |
for (y = ylim.min; y <= ylim.max; y++) { |
406 |
> |
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
407 |
> |
fprintf(stderr, "%s: read error\n", pfile); |
408 |
|
exit(1); |
409 |
|
} |
410 |
< |
addscanline(y, scanin, zin, plast); |
410 |
> |
if (zfd != -1 && read(zfd, (char *)zin, |
411 |
> |
scanlen(&tresolu)*sizeof(float)) |
412 |
> |
< scanlen(&tresolu)*sizeof(float)) |
413 |
> |
syserror(zspec); |
414 |
> |
addscanline(xlim+y, y, scanin, zin, plast); |
415 |
|
} |
416 |
|
/* clean up */ |
417 |
+ |
free((char *)xlim); |
418 |
|
free((char *)scanin); |
419 |
|
free((char *)zin); |
420 |
|
free((char *)plast); |
425 |
|
|
426 |
|
|
427 |
|
pixform(xfmat, vw1, vw2) /* compute view1 to view2 matrix */ |
428 |
< |
register double xfmat[4][4]; |
428 |
> |
register MAT4 xfmat; |
429 |
|
register VIEW *vw1, *vw2; |
430 |
|
{ |
431 |
|
double m4t[4][4]; |
465 |
|
} |
466 |
|
|
467 |
|
|
468 |
< |
addscanline(y, pline, zline, lasty) /* add scanline to output */ |
468 |
> |
addscanline(xl, y, pline, zline, lasty) /* add scanline to output */ |
469 |
> |
struct bound *xl; |
470 |
|
int y; |
471 |
|
COLR *pline; |
472 |
|
float *zline; |
473 |
|
struct position *lasty; /* input/output */ |
474 |
|
{ |
394 |
– |
extern double sqrt(); |
475 |
|
FVECT pos; |
476 |
|
struct position lastx, newpos; |
477 |
+ |
double wt; |
478 |
|
register int x; |
479 |
|
|
480 |
|
lastx.z = 0; |
481 |
< |
for (x = scanlen(&tresolu); x-- > 0; ) { |
481 |
> |
for (x = xl->max; x >= xl->min; x--) { |
482 |
|
pix2loc(pos, &tresolu, x, y); |
483 |
|
pos[2] = zline[x]; |
484 |
< |
if (movepixel(pos) < 0) { |
484 |
> |
if ((wt = movepixel(pos)) <= FTINY) { |
485 |
|
lasty[x].z = lastx.z = 0; /* mark invalid */ |
486 |
|
continue; |
487 |
|
} |
488 |
+ |
/* add pixel to our image */ |
489 |
|
newpos.x = pos[0] * hresolu; |
490 |
|
newpos.y = pos[1] * vresolu; |
491 |
|
newpos.z = zline[x]; |
492 |
< |
/* add pixel to our image */ |
493 |
< |
if (pos[0] >= 0 && newpos.x < hresolu |
494 |
< |
&& pos[1] >= 0 && newpos.y < vresolu) { |
495 |
< |
addpixel(&newpos, &lastx, &lasty[x], pline[x], pos[2]); |
414 |
< |
lasty[x].x = lastx.x = newpos.x; |
415 |
< |
lasty[x].y = lastx.y = newpos.y; |
416 |
< |
lasty[x].z = lastx.z = newpos.z; |
417 |
< |
} else |
418 |
< |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
492 |
> |
addpixel(&newpos, &lastx, &lasty[x], pline[x], wt, pos[2]); |
493 |
> |
lasty[x].x = lastx.x = newpos.x; |
494 |
> |
lasty[x].y = lastx.y = newpos.y; |
495 |
> |
lasty[x].z = lastx.z = newpos.z; |
496 |
|
} |
497 |
|
} |
498 |
|
|
499 |
|
|
500 |
< |
addpixel(p0, p1, p2, pix, z) /* fill in pixel parallelogram */ |
500 |
> |
addpixel(p0, p1, p2, pix, w, z) /* fill in pixel parallelogram */ |
501 |
|
struct position *p0, *p1, *p2; |
502 |
|
COLR pix; |
503 |
+ |
double w; |
504 |
|
double z; |
505 |
|
{ |
506 |
|
double zt = 2.*zeps*p0->z; /* threshold */ |
507 |
+ |
COLOR pval; /* converted+weighted pixel */ |
508 |
|
int s1x, s1y, s2x, s2y; /* step sizes */ |
509 |
|
int l1, l2, c1, c2; /* side lengths and counters */ |
510 |
|
int p1isy; /* p0p1 along y? */ |
518 |
|
l1 = ABS(s1x); |
519 |
|
if (p1isy = (ABS(s1y) > l1)) |
520 |
|
l1 = ABS(s1y); |
521 |
+ |
else if (l1 < 1) |
522 |
+ |
l1 = 1; |
523 |
|
} else { |
524 |
|
l1 = s1x = s1y = 1; |
525 |
|
p1isy = -1; |
535 |
|
if (p1isy != 0 && ABS(s2x) > l2) |
536 |
|
l2 = ABS(s2x); |
537 |
|
} |
538 |
+ |
if (l2 < 1) |
539 |
+ |
l2 = 1; |
540 |
|
} else |
541 |
|
l2 = s2x = s2y = 1; |
542 |
|
/* fill the parallelogram */ |
543 |
+ |
if (averaging) { |
544 |
+ |
colr_color(pval, pix); |
545 |
+ |
scalecolor(pval, w); |
546 |
+ |
} |
547 |
|
for (c1 = l1; c1-- > 0; ) { |
548 |
|
x1 = p0->x + c1*s1x/l1; |
549 |
|
y1 = p0->y + c1*s1y/l1; |
554 |
|
y = y1 + c2*s2y/l2; |
555 |
|
if (y < 0 || y >= vresolu) |
556 |
|
continue; |
557 |
< |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
557 |
> |
if (averaging) { |
558 |
> |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
559 |
|
> zeps*zscan(y)[x]) { |
560 |
< |
zscan(y)[x] = z; |
560 |
> |
copycolor(sscan(y)[x], pval); |
561 |
> |
wscan(y)[x] = w; |
562 |
> |
zscan(y)[x] = z; |
563 |
> |
} else if (z-zscan(y)[x] <= zeps*zscan(y)[x]) { |
564 |
> |
addcolor(sscan(y)[x], pval); |
565 |
> |
wscan(y)[x] += w; |
566 |
> |
} |
567 |
> |
} else if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
568 |
> |
> zeps*zscan(y)[x]) { |
569 |
|
copycolr(pscan(y)[x], pix); |
570 |
+ |
zscan(y)[x] = z; |
571 |
|
} |
572 |
|
} |
573 |
|
} |
574 |
|
} |
575 |
|
|
576 |
|
|
577 |
+ |
double |
578 |
|
movepixel(pos) /* reposition image point */ |
579 |
< |
FVECT pos; |
579 |
> |
register FVECT pos; |
580 |
|
{ |
581 |
< |
FVECT pt, direc; |
581 |
> |
FVECT pt, tdir, odir; |
582 |
> |
double d; |
583 |
> |
register int i; |
584 |
|
|
585 |
|
if (pos[2] <= 0) /* empty pixel */ |
586 |
< |
return(-1); |
587 |
< |
if (hasmatrix) { |
586 |
> |
return(0); |
587 |
> |
if (!averaging && hasmatrix) { |
588 |
|
pos[0] += theirview.hoff - .5; |
589 |
|
pos[1] += theirview.voff - .5; |
590 |
|
if (theirview.type == VT_PER) { |
591 |
< |
if (normdist) /* adjust for eye-ray distance */ |
592 |
< |
pos[2] /= sqrt( 1. |
593 |
< |
+ pos[0]*pos[0]*theirview.hn2 |
494 |
< |
+ pos[1]*pos[1]*theirview.vn2 ); |
591 |
> |
if (normdist) /* adjust distance */ |
592 |
> |
pos[2] /= sqrt(1. + pos[0]*pos[0]*theirview.hn2 |
593 |
> |
+ pos[1]*pos[1]*theirview.vn2); |
594 |
|
pos[0] *= pos[2]; |
595 |
|
pos[1] *= pos[2]; |
596 |
|
} |
597 |
|
multp3(pos, pos, theirs2ours); |
598 |
|
if (pos[2] <= 0) |
599 |
< |
return(-1); |
599 |
> |
return(0); |
600 |
|
if (ourview.type == VT_PER) { |
601 |
|
pos[0] /= pos[2]; |
602 |
|
pos[1] /= pos[2]; |
603 |
|
} |
604 |
|
pos[0] += .5 - ourview.hoff; |
605 |
|
pos[1] += .5 - ourview.voff; |
606 |
+ |
} else { |
607 |
+ |
if (viewray(pt, tdir, &theirview, pos[0], pos[1]) < -FTINY) |
608 |
+ |
return(0); |
609 |
+ |
if (!normdist && theirview.type == VT_PER) /* adjust */ |
610 |
+ |
pos[2] *= sqrt(1. + pos[0]*pos[0]*theirview.hn2 |
611 |
+ |
+ pos[1]*pos[1]*theirview.vn2); |
612 |
+ |
pt[0] += tdir[0]*pos[2]; |
613 |
+ |
pt[1] += tdir[1]*pos[2]; |
614 |
+ |
pt[2] += tdir[2]*pos[2]; |
615 |
+ |
viewloc(pos, &ourview, pt); |
616 |
+ |
if (pos[2] <= 0) |
617 |
+ |
return(0); |
618 |
+ |
} |
619 |
+ |
if (pos[0] < 0 || pos[0] >= 1-FTINY || pos[1] < 0 || pos[1] >= 1-FTINY) |
620 |
|
return(0); |
621 |
+ |
if (!averaging) |
622 |
+ |
return(1); |
623 |
+ |
if (ourview.type == VT_PAR) /* compute our direction */ |
624 |
+ |
VCOPY(odir, ourview.vdir); |
625 |
+ |
else |
626 |
+ |
for (i = 0; i < 3; i++) |
627 |
+ |
odir[i] = (pt[i] - ourview.vp[i])/pos[2]; |
628 |
+ |
d = DOT(odir,tdir); /* compute pixel weight */ |
629 |
+ |
if (d >= 1.-1./MAXWT/MAXWT) |
630 |
+ |
return(MAXWT); /* clip to maximum weight */ |
631 |
+ |
return(1./sqrt(1.-d)); |
632 |
+ |
} |
633 |
+ |
|
634 |
+ |
|
635 |
+ |
getperim(xl, yl, zline, zfd) /* compute overlapping image area */ |
636 |
+ |
register struct bound *xl; |
637 |
+ |
struct bound *yl; |
638 |
+ |
float *zline; |
639 |
+ |
int zfd; |
640 |
+ |
{ |
641 |
+ |
int step; |
642 |
+ |
FVECT pos; |
643 |
+ |
register int x, y; |
644 |
+ |
/* set up step size */ |
645 |
+ |
if (scanlen(&tresolu) < numscans(&tresolu)) |
646 |
+ |
step = scanlen(&tresolu)/NSTEPS; |
647 |
+ |
else |
648 |
+ |
step = numscans(&tresolu)/NSTEPS; |
649 |
+ |
if (step < MINSTEP) { /* not worth cropping? */ |
650 |
+ |
yl->min = 0; |
651 |
+ |
yl->max = numscans(&tresolu) - 1; |
652 |
+ |
x = scanlen(&tresolu) - 1; |
653 |
+ |
for (y = numscans(&tresolu); y--; ) { |
654 |
+ |
xl[y].min = 0; |
655 |
+ |
xl[y].max = x; |
656 |
+ |
} |
657 |
+ |
return(1); |
658 |
|
} |
659 |
< |
if (viewray(pt, direc, &theirview, pos[0], pos[1]) < 0) |
660 |
< |
return(-1); |
661 |
< |
pt[0] += direc[0]*pos[2]; |
662 |
< |
pt[1] += direc[1]*pos[2]; |
663 |
< |
pt[2] += direc[2]*pos[2]; |
664 |
< |
viewloc(pos, &ourview, pt); |
665 |
< |
if (pos[2] <= 0) |
666 |
< |
return(-1); |
667 |
< |
return(0); |
659 |
> |
yl->min = 32000; yl->max = 0; /* search for points on image */ |
660 |
> |
for (y = step - 1; y < numscans(&tresolu); y += step) { |
661 |
> |
if (zfd != -1) { |
662 |
> |
if (lseek(zfd, (long)y*scanlen(&tresolu)*sizeof(float), |
663 |
> |
0) < 0) |
664 |
> |
syserror("lseek"); |
665 |
> |
if (read(zfd, (char *)zline, |
666 |
> |
scanlen(&tresolu)*sizeof(float)) |
667 |
> |
< scanlen(&tresolu)*sizeof(float)) |
668 |
> |
syserror("read"); |
669 |
> |
} |
670 |
> |
xl[y].min = 32000; xl[y].max = 0; /* x max */ |
671 |
> |
for (x = scanlen(&tresolu); (x -= step) > 0; ) { |
672 |
> |
pix2loc(pos, &tresolu, x, y); |
673 |
> |
pos[2] = zline[x]; |
674 |
> |
if (movepixel(pos) > FTINY) { |
675 |
> |
xl[y].max = x + step - 1; |
676 |
> |
xl[y].min = x - step + 1; /* x min */ |
677 |
> |
if (xl[y].min < 0) |
678 |
> |
xl[y].min = 0; |
679 |
> |
for (x = step - 1; x < xl[y].max; x += step) { |
680 |
> |
pix2loc(pos, &tresolu, x, y); |
681 |
> |
pos[2] = zline[x]; |
682 |
> |
if (movepixel(pos) > FTINY) { |
683 |
> |
xl[y].min = x - step + 1; |
684 |
> |
break; |
685 |
> |
} |
686 |
> |
} |
687 |
> |
if (y < yl->min) /* y limits */ |
688 |
> |
yl->min = y - step + 1; |
689 |
> |
yl->max = y + step - 1; |
690 |
> |
break; |
691 |
> |
} |
692 |
> |
} |
693 |
> |
/* fill in between */ |
694 |
> |
if (y < step) { |
695 |
> |
xl[y-1].min = xl[y].min; |
696 |
> |
xl[y-1].max = xl[y].max; |
697 |
> |
} else { |
698 |
> |
if (xl[y].min < xl[y-step].min) |
699 |
> |
xl[y-1].min = xl[y].min; |
700 |
> |
else |
701 |
> |
xl[y-1].min = xl[y-step].min; |
702 |
> |
if (xl[y].max > xl[y-step].max) |
703 |
> |
xl[y-1].max = xl[y].max; |
704 |
> |
else |
705 |
> |
xl[y-1].max = xl[y-step].max; |
706 |
> |
} |
707 |
> |
for (x = 2; x < step; x++) |
708 |
> |
copystruct(xl+y-x, xl+y-1); |
709 |
> |
} |
710 |
> |
if (yl->max >= numscans(&tresolu)) |
711 |
> |
yl->max = numscans(&tresolu) - 1; |
712 |
> |
y -= step; |
713 |
> |
for (x = numscans(&tresolu) - 1; x > y; x--) /* fill bottom rows */ |
714 |
> |
copystruct(xl+x, xl+y); |
715 |
> |
return(yl->max >= yl->min); |
716 |
|
} |
717 |
|
|
718 |
|
|
726 |
|
/* get back buffer */ |
727 |
|
yback = (int *)malloc(hresolu*sizeof(int)); |
728 |
|
if (yback == NULL) |
729 |
< |
syserror(); |
729 |
> |
syserror(progname); |
730 |
|
for (x = 0; x < hresolu; x++) |
731 |
|
yback[x] = -2; |
732 |
|
/* |
786 |
|
< zscan(y)[xback] ) ) { |
787 |
|
if (samp > 0 && ABS(x-xback) >= samp) |
788 |
|
goto fillit; |
789 |
< |
copycolr(pscan(y)[x],pscan(y)[xback]); |
789 |
> |
if (averaging) { |
790 |
> |
copycolor(sscan(y)[x], |
791 |
> |
sscan(y)[xback]); |
792 |
> |
wscan(y)[x] = wscan(y)[xback]; |
793 |
> |
} else |
794 |
> |
copycolr(pscan(y)[x], |
795 |
> |
pscan(y)[xback]); |
796 |
|
zscan(y)[x] = zscan(y)[xback]; |
797 |
|
} else { |
798 |
|
if (samp > 0 && ABS(y-yback[x]) > samp) |
799 |
|
goto fillit; |
800 |
< |
copycolr(pscan(y)[x],pscan(yback[x])[x]); |
800 |
> |
if (averaging) { |
801 |
> |
copycolor(sscan(y)[x], |
802 |
> |
sscan(yback[x])[x]); |
803 |
> |
wscan(y)[x] = |
804 |
> |
wscan(yback[x])[x]; |
805 |
> |
} else |
806 |
> |
copycolr(pscan(y)[x], |
807 |
> |
pscan(yback[x])[x]); |
808 |
|
zscan(y)[x] = zscan(yback[x])[x]; |
809 |
|
} |
810 |
|
continue; |
836 |
|
} |
837 |
|
|
838 |
|
|
839 |
< |
writepicture() /* write out picture */ |
839 |
> |
clipaft() /* perform aft clipping as indicated */ |
840 |
|
{ |
841 |
+ |
register int x, y; |
842 |
+ |
double tstdist; |
843 |
+ |
double yzn2, vx; |
844 |
+ |
|
845 |
+ |
if (ourview.vaft <= FTINY) |
846 |
+ |
return; |
847 |
+ |
tstdist = ourview.vaft - ourview.vfore; |
848 |
+ |
for (y = 0; y < vresolu; y++) { |
849 |
+ |
if (ourview.type == VT_PER) { /* adjust distance */ |
850 |
+ |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
851 |
+ |
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
852 |
+ |
tstdist = (ourview.vaft - ourview.vfore)*sqrt(yzn2); |
853 |
+ |
} |
854 |
+ |
for (x = 0; x < hresolu; x++) |
855 |
+ |
if (zscan(y)[x] > tstdist) { |
856 |
+ |
if (ourview.type == VT_PER) { |
857 |
+ |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
858 |
+ |
if (zscan(y)[x] <= (ourview.vaft - |
859 |
+ |
ourview.vfore) * |
860 |
+ |
sqrt(vx*vx*ourview.hn2 + yzn2)) |
861 |
+ |
continue; |
862 |
+ |
} |
863 |
+ |
if (averaging) |
864 |
+ |
bzero(sscan(y)[x], sizeof(COLOR)); |
865 |
+ |
else |
866 |
+ |
bzero(pscan(y)[x], sizeof(COLR)); |
867 |
+ |
zscan(y)[x] = 0.0; |
868 |
+ |
} |
869 |
+ |
} |
870 |
+ |
} |
871 |
+ |
|
872 |
+ |
|
873 |
+ |
writepicture() /* write out picture (alters buffer) */ |
874 |
+ |
{ |
875 |
|
int y; |
876 |
+ |
register int x; |
877 |
+ |
double d; |
878 |
|
|
879 |
|
fprtresolu(hresolu, vresolu, stdout); |
880 |
|
for (y = vresolu-1; y >= 0; y--) |
881 |
< |
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
882 |
< |
syserror(); |
881 |
> |
if (averaging) { |
882 |
> |
for (x = 0; x < hresolu; x++) { /* average pixels */ |
883 |
> |
d = rexpadj/wscan(y)[x]; |
884 |
> |
scalecolor(sscan(y)[x], d); |
885 |
> |
} |
886 |
> |
if (fwritescan(sscan(y), hresolu, stdout) < 0) |
887 |
> |
syserror(progname); |
888 |
> |
} else { |
889 |
> |
if (expadj) |
890 |
> |
shiftcolrs(pscan(y), hresolu, expadj); |
891 |
> |
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
892 |
> |
syserror(progname); |
893 |
> |
} |
894 |
|
} |
895 |
|
|
896 |
|
|
897 |
|
writedistance(fname) /* write out z file */ |
898 |
|
char *fname; |
899 |
|
{ |
900 |
< |
extern double sqrt(); |
901 |
< |
int donorm = normdist && ourview.type == VT_PER; |
900 |
> |
int donorm = normdist && ourview.type == VT_PER && |
901 |
> |
!averaging && hasmatrix; |
902 |
|
int fd; |
903 |
|
int y; |
904 |
|
float *zout; |
905 |
|
|
906 |
< |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) { |
907 |
< |
perror(fname); |
650 |
< |
exit(1); |
651 |
< |
} |
906 |
> |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) |
907 |
> |
syserror(fname); |
908 |
|
if (donorm |
909 |
|
&& (zout = (float *)malloc(hresolu*sizeof(float))) == NULL) |
910 |
< |
syserror(); |
910 |
> |
syserror(progname); |
911 |
|
for (y = vresolu-1; y >= 0; y--) { |
912 |
|
if (donorm) { |
913 |
|
double vx, yzn2; |
922 |
|
} else |
923 |
|
zout = zscan(y); |
924 |
|
if (write(fd, (char *)zout, hresolu*sizeof(float)) |
925 |
< |
< hresolu*sizeof(float)) { |
926 |
< |
perror(fname); |
671 |
< |
exit(1); |
672 |
< |
} |
925 |
> |
< hresolu*sizeof(float)) |
926 |
> |
syserror(fname); |
927 |
|
} |
928 |
|
if (donorm) |
929 |
|
free((char *)zout); |
931 |
|
} |
932 |
|
|
933 |
|
|
680 |
– |
isfloat(s) /* see if string is floating number */ |
681 |
– |
register char *s; |
682 |
– |
{ |
683 |
– |
for ( ; *s; s++) |
684 |
– |
if ((*s < '0' || *s > '9') && *s != '.' && *s != '-' |
685 |
– |
&& *s != 'e' && *s != 'E' && *s != '+') |
686 |
– |
return(0); |
687 |
– |
return(1); |
688 |
– |
} |
689 |
– |
|
690 |
– |
|
934 |
|
backfill(x, y) /* fill pixel with background */ |
935 |
|
int x, y; |
936 |
|
{ |
937 |
< |
register BYTE *dest = pscan(y)[x]; |
938 |
< |
|
939 |
< |
copycolr(dest, backcolr); |
937 |
> |
if (averaging) { |
938 |
> |
copycolor(sscan(y)[x], backcolor); |
939 |
> |
wscan(y)[x] = 1; |
940 |
> |
} else |
941 |
> |
copycolr(pscan(y)[x], backcolr); |
942 |
|
zscan(y)[x] = backz; |
943 |
|
} |
944 |
|
|
960 |
|
cp = combuf; |
961 |
|
wp = argv; |
962 |
|
for ( ; ; ) { |
963 |
< |
while (isspace(*cp)) cp++; |
964 |
< |
if (!*cp) break; |
965 |
< |
*wp++ = cp; |
966 |
< |
while (!isspace(*cp)) |
967 |
< |
if (!*cp++) goto done; |
968 |
< |
*cp++ = '\0'; |
963 |
> |
while (isspace(*cp)) /* nullify spaces */ |
964 |
> |
*cp++ = '\0'; |
965 |
> |
if (!*cp) /* all done? */ |
966 |
> |
break; |
967 |
> |
*wp++ = cp; /* add argument to list */ |
968 |
> |
while (*++cp && !isspace(*cp)) |
969 |
> |
; |
970 |
|
} |
725 |
– |
done: |
971 |
|
*wp = NULL; |
972 |
|
/* start process */ |
973 |
|
if ((rval = open_process(PDesc, argv)) < 0) |
974 |
< |
syserror(); |
974 |
> |
syserror(progname); |
975 |
|
if (rval == 0) { |
976 |
|
fprintf(stderr, "%s: command not found\n", argv[0]); |
977 |
|
exit(1); |
1012 |
|
register float *fbp; |
1013 |
|
register int i; |
1014 |
|
|
1015 |
+ |
if (queuesiz == 0) |
1016 |
+ |
return; |
1017 |
|
fbp = fbuf; |
1018 |
|
for (i = 0; i < queuesiz; i++) { |
1019 |
|
viewray(orig, dir, &ourview, |
1038 |
|
fbp[1] *= ourexp; |
1039 |
|
fbp[2] *= ourexp; |
1040 |
|
} |
1041 |
< |
setcolr(pscan(queue[i][1])[queue[i][0]], |
1042 |
< |
fbp[0], fbp[1], fbp[2]); |
1041 |
> |
if (averaging) { |
1042 |
> |
setcolor(sscan(queue[i][1])[queue[i][0]], |
1043 |
> |
fbp[0], fbp[1], fbp[2]); |
1044 |
> |
wscan(queue[i][1])[queue[i][0]] = 1; |
1045 |
> |
} else |
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]; |
1049 |
|
fbp += 4; |
1050 |
|
} |
1052 |
|
} |
1053 |
|
|
1054 |
|
|
1055 |
< |
syserror() /* report error and exit */ |
1055 |
> |
syserror(s) /* report error and exit */ |
1056 |
> |
char *s; |
1057 |
|
{ |
1058 |
< |
perror(progname); |
1058 |
> |
perror(s); |
1059 |
|
exit(1); |
1060 |
|
} |