1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.39 |
static const char RCSid[] = "$Id: pinterp.c,v 2.38 2003/10/20 16:01:55 greg Exp $"; |
3 |
greg |
1.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* Interpolate and extrapolate pictures with different view parameters. |
6 |
|
|
* |
7 |
|
|
* Greg Ward 09Dec89 |
8 |
|
|
*/ |
9 |
|
|
|
10 |
schorsch |
2.34 |
#include "copyright.h" |
11 |
greg |
1.1 |
|
12 |
greg |
2.3 |
#include <ctype.h> |
13 |
schorsch |
2.35 |
#include <string.h> |
14 |
greg |
2.3 |
|
15 |
greg |
2.39 |
#include "platform.h" |
16 |
schorsch |
2.34 |
#include "standard.h" |
17 |
|
|
#include "rtprocess.h" /* Windows: must come before color.h */ |
18 |
greg |
1.1 |
#include "view.h" |
19 |
|
|
#include "color.h" |
20 |
|
|
|
21 |
greg |
2.21 |
#define LOG2 0.69314718055994530942 |
22 |
|
|
|
23 |
greg |
1.17 |
#define pscan(y) (ourpict+(y)*hresolu) |
24 |
greg |
2.19 |
#define sscan(y) (ourspict+(y)*hresolu) |
25 |
|
|
#define wscan(y) (ourweigh+(y)*hresolu) |
26 |
greg |
1.17 |
#define zscan(y) (ourzbuf+(y)*hresolu) |
27 |
greg |
2.24 |
#define bscan(y) (ourbpict+(y)*hresolu) |
28 |
greg |
2.19 |
#define averaging (ourweigh != NULL) |
29 |
greg |
2.24 |
#define blurring (ourbpict != NULL) |
30 |
greg |
2.22 |
#define usematrix (hasmatrix & !averaging) |
31 |
schorsch |
2.37 |
#define zisnorm ((!usematrix) | (ourview.type != VT_PER)) |
32 |
greg |
1.1 |
|
33 |
greg |
2.20 |
#define MAXWT 1000. /* maximum pixel weight (averaging) */ |
34 |
greg |
2.19 |
|
35 |
greg |
1.13 |
#define F_FORE 1 /* fill foreground */ |
36 |
|
|
#define F_BACK 2 /* fill background */ |
37 |
greg |
1.11 |
|
38 |
greg |
2.3 |
#define PACKSIZ 256 /* max. calculation packet size */ |
39 |
greg |
1.13 |
|
40 |
gregl |
2.30 |
#define RTCOM "rtrace -h- -ovl -fff -ld- -i- -I- " |
41 |
greg |
1.13 |
|
42 |
greg |
1.3 |
#define ABS(x) ((x)>0?(x):-(x)) |
43 |
|
|
|
44 |
greg |
1.15 |
struct position {int x,y; float z;}; |
45 |
|
|
|
46 |
greg |
2.16 |
#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 |
greg |
1.17 |
VIEW ourview = STDVIEW; /* desired view */ |
52 |
|
|
int hresolu = 512; /* horizontal resolution */ |
53 |
|
|
int vresolu = 512; /* vertical resolution */ |
54 |
greg |
1.18 |
double pixaspect = 1.0; /* pixel aspect ratio */ |
55 |
greg |
1.1 |
|
56 |
greg |
1.8 |
double zeps = .02; /* allowed z epsilon */ |
57 |
greg |
1.1 |
|
58 |
greg |
2.19 |
COLR *ourpict; /* output picture (COLR's) */ |
59 |
greg |
2.20 |
COLOR *ourspict; /* output pixel sums (averaging) */ |
60 |
|
|
float *ourweigh = NULL; /* output pixel weights (averaging) */ |
61 |
greg |
1.1 |
float *ourzbuf; /* corresponding z-buffer */ |
62 |
greg |
2.25 |
COLOR *ourbpict = NULL; /* blurred picture (view averaging) */ |
63 |
greg |
1.1 |
|
64 |
greg |
2.24 |
VIEW avgview; /* average view for -B option */ |
65 |
|
|
int nvavg; /* number of views averaged */ |
66 |
|
|
|
67 |
greg |
1.1 |
char *progname; |
68 |
|
|
|
69 |
greg |
1.25 |
int fillo = F_FORE|F_BACK; /* selected fill options */ |
70 |
greg |
1.26 |
int fillsamp = 0; /* sample separation (0 == inf) */ |
71 |
greg |
1.14 |
extern int backfill(), rcalfill(); /* fill functions */ |
72 |
greg |
1.25 |
int (*fillfunc)() = backfill; /* selected fill function */ |
73 |
greg |
1.11 |
COLR backcolr = BLKCOLR; /* background color */ |
74 |
greg |
2.19 |
COLOR backcolor = BLKCOLOR; /* background color (float) */ |
75 |
greg |
1.13 |
double backz = 0.0; /* background z value */ |
76 |
greg |
2.22 |
int normdist = 1; /* i/o normalized distance? */ |
77 |
greg |
2.27 |
char ourfmt[LPICFMT+1] = PICFMT; /* original picture format */ |
78 |
greg |
2.21 |
double ourexp = -1; /* original picture exposure */ |
79 |
|
|
int expadj = 0; /* exposure adjustment (f-stops) */ |
80 |
|
|
double rexpadj = 1; /* real exposure adjustment */ |
81 |
greg |
1.11 |
|
82 |
greg |
2.24 |
VIEW theirview; /* input view */ |
83 |
greg |
1.16 |
int gotview; /* got input view? */ |
84 |
greg |
1.33 |
int wrongformat = 0; /* input in another format? */ |
85 |
greg |
1.34 |
RESOLU tresolu; /* input resolution */ |
86 |
greg |
1.17 |
double theirexp; /* input picture exposure */ |
87 |
greg |
2.19 |
MAT4 theirs2ours; /* transformation matrix */ |
88 |
greg |
1.30 |
int hasmatrix = 0; /* has transformation matrix */ |
89 |
greg |
1.1 |
|
90 |
schorsch |
2.34 |
static SUBPROC PDesc = SP_INACTIVE; /* rtrace process descriptor */ |
91 |
greg |
2.3 |
unsigned short queue[PACKSIZ][2]; /* pending pixels */ |
92 |
|
|
int packsiz; /* actual packet size */ |
93 |
greg |
2.26 |
int queuesiz = 0; /* number of pixels pending */ |
94 |
greg |
1.5 |
|
95 |
greg |
2.19 |
extern double movepixel(); |
96 |
greg |
1.13 |
|
97 |
greg |
2.19 |
|
98 |
greg |
1.1 |
main(argc, argv) /* interpolate pictures */ |
99 |
|
|
int argc; |
100 |
|
|
char *argv[]; |
101 |
|
|
{ |
102 |
greg |
2.24 |
#define check(ol,al) if (argv[an][ol] || \ |
103 |
|
|
badarg(argc-an-1,argv+an+1,al)) \ |
104 |
greg |
2.3 |
goto badopt |
105 |
greg |
1.1 |
int gotvfile = 0; |
106 |
greg |
2.19 |
int doavg = -1; |
107 |
greg |
2.24 |
int doblur = 0; |
108 |
greg |
1.11 |
char *zfile = NULL; |
109 |
greg |
2.21 |
char *expcomp = NULL; |
110 |
greg |
2.24 |
int i, an, rval; |
111 |
greg |
1.1 |
|
112 |
|
|
progname = argv[0]; |
113 |
|
|
|
114 |
greg |
2.24 |
for (an = 1; an < argc && argv[an][0] == '-'; an++) { |
115 |
|
|
rval = getviewopt(&ourview, argc-an, argv+an); |
116 |
greg |
1.17 |
if (rval >= 0) { |
117 |
greg |
2.24 |
an += rval; |
118 |
greg |
1.17 |
continue; |
119 |
|
|
} |
120 |
greg |
2.24 |
switch (argv[an][1]) { |
121 |
greg |
2.21 |
case 'e': /* exposure */ |
122 |
|
|
check(2,"f"); |
123 |
greg |
2.24 |
expcomp = argv[++an]; |
124 |
greg |
2.21 |
break; |
125 |
greg |
1.1 |
case 't': /* threshold */ |
126 |
greg |
2.3 |
check(2,"f"); |
127 |
greg |
2.24 |
zeps = atof(argv[++an]); |
128 |
greg |
1.1 |
break; |
129 |
greg |
2.19 |
case 'a': /* average */ |
130 |
|
|
check(2,NULL); |
131 |
|
|
doavg = 1; |
132 |
|
|
break; |
133 |
greg |
2.24 |
case 'B': /* blur views */ |
134 |
|
|
check(2,NULL); |
135 |
|
|
doblur = 1; |
136 |
|
|
break; |
137 |
greg |
2.19 |
case 'q': /* quick (no avg.) */ |
138 |
|
|
check(2,NULL); |
139 |
|
|
doavg = 0; |
140 |
|
|
break; |
141 |
greg |
1.11 |
case 'n': /* dist. normalized? */ |
142 |
greg |
2.3 |
check(2,NULL); |
143 |
greg |
1.11 |
normdist = !normdist; |
144 |
greg |
1.10 |
break; |
145 |
greg |
1.11 |
case 'f': /* fill type */ |
146 |
greg |
2.24 |
switch (argv[an][2]) { |
147 |
greg |
1.11 |
case '0': /* none */ |
148 |
greg |
2.3 |
check(3,NULL); |
149 |
greg |
1.25 |
fillo = 0; |
150 |
greg |
1.11 |
break; |
151 |
|
|
case 'f': /* foreground */ |
152 |
greg |
2.3 |
check(3,NULL); |
153 |
greg |
1.25 |
fillo = F_FORE; |
154 |
greg |
1.11 |
break; |
155 |
|
|
case 'b': /* background */ |
156 |
greg |
2.3 |
check(3,NULL); |
157 |
greg |
1.25 |
fillo = F_BACK; |
158 |
greg |
1.11 |
break; |
159 |
|
|
case 'a': /* all */ |
160 |
greg |
2.3 |
check(3,NULL); |
161 |
greg |
1.25 |
fillo = F_FORE|F_BACK; |
162 |
greg |
1.11 |
break; |
163 |
greg |
1.25 |
case 's': /* sample */ |
164 |
greg |
2.3 |
check(3,"i"); |
165 |
greg |
2.24 |
fillsamp = atoi(argv[++an]); |
166 |
greg |
1.25 |
break; |
167 |
greg |
1.11 |
case 'c': /* color */ |
168 |
greg |
2.3 |
check(3,"fff"); |
169 |
greg |
1.25 |
fillfunc = backfill; |
170 |
greg |
2.24 |
setcolor(backcolor, atof(argv[an+1]), |
171 |
|
|
atof(argv[an+2]), atof(argv[an+3])); |
172 |
greg |
2.19 |
setcolr(backcolr, colval(backcolor,RED), |
173 |
|
|
colval(backcolor,GRN), |
174 |
|
|
colval(backcolor,BLU)); |
175 |
greg |
2.24 |
an += 3; |
176 |
greg |
1.11 |
break; |
177 |
greg |
1.13 |
case 'z': /* z value */ |
178 |
greg |
2.3 |
check(3,"f"); |
179 |
greg |
1.25 |
fillfunc = backfill; |
180 |
greg |
2.24 |
backz = atof(argv[++an]); |
181 |
greg |
1.13 |
break; |
182 |
|
|
case 'r': /* rtrace */ |
183 |
greg |
2.3 |
check(3,"s"); |
184 |
greg |
1.25 |
fillfunc = rcalfill; |
185 |
greg |
2.24 |
calstart(RTCOM, argv[++an]); |
186 |
greg |
1.13 |
break; |
187 |
greg |
1.11 |
default: |
188 |
|
|
goto badopt; |
189 |
|
|
} |
190 |
|
|
break; |
191 |
|
|
case 'z': /* z file */ |
192 |
greg |
2.3 |
check(2,"s"); |
193 |
greg |
2.24 |
zfile = argv[++an]; |
194 |
greg |
1.11 |
break; |
195 |
greg |
1.6 |
case 'x': /* x resolution */ |
196 |
greg |
2.3 |
check(2,"i"); |
197 |
greg |
2.24 |
hresolu = atoi(argv[++an]); |
198 |
greg |
1.6 |
break; |
199 |
|
|
case 'y': /* y resolution */ |
200 |
greg |
2.3 |
check(2,"i"); |
201 |
greg |
2.24 |
vresolu = atoi(argv[++an]); |
202 |
greg |
1.6 |
break; |
203 |
greg |
1.18 |
case 'p': /* pixel aspect */ |
204 |
greg |
2.24 |
if (argv[an][2] != 'a') |
205 |
greg |
2.6 |
goto badopt; |
206 |
|
|
check(3,"f"); |
207 |
greg |
2.24 |
pixaspect = atof(argv[++an]); |
208 |
greg |
1.18 |
break; |
209 |
greg |
1.17 |
case 'v': /* view file */ |
210 |
greg |
2.24 |
if (argv[an][2] != 'f') |
211 |
greg |
1.1 |
goto badopt; |
212 |
greg |
2.3 |
check(3,"s"); |
213 |
greg |
2.33 |
gotvfile = viewfile(argv[++an], &ourview, NULL); |
214 |
greg |
2.10 |
if (gotvfile < 0) |
215 |
greg |
2.24 |
syserror(argv[an]); |
216 |
greg |
2.10 |
else if (gotvfile == 0) { |
217 |
greg |
1.17 |
fprintf(stderr, "%s: bad view file\n", |
218 |
greg |
2.24 |
argv[an]); |
219 |
greg |
1.17 |
exit(1); |
220 |
greg |
1.1 |
} |
221 |
|
|
break; |
222 |
|
|
default: |
223 |
|
|
badopt: |
224 |
greg |
1.10 |
fprintf(stderr, "%s: command line error at '%s'\n", |
225 |
greg |
2.24 |
progname, argv[an]); |
226 |
greg |
1.10 |
goto userr; |
227 |
greg |
1.1 |
} |
228 |
greg |
1.17 |
} |
229 |
greg |
1.1 |
/* check arguments */ |
230 |
greg |
2.24 |
if ((argc-an)%2) |
231 |
greg |
1.10 |
goto userr; |
232 |
greg |
2.3 |
if (fillsamp == 1) |
233 |
|
|
fillo &= ~F_BACK; |
234 |
greg |
2.20 |
if (doavg < 0) |
235 |
greg |
2.24 |
doavg = (argc-an) > 2; |
236 |
schorsch |
2.36 |
if (expcomp != NULL) { |
237 |
schorsch |
2.37 |
if ((expcomp[0] == '+') | (expcomp[0] == '-')) { |
238 |
greg |
2.21 |
expadj = atof(expcomp) + (expcomp[0]=='+' ? .5 : -.5); |
239 |
greg |
2.24 |
if (doavg | doblur) |
240 |
greg |
2.21 |
rexpadj = pow(2.0, atof(expcomp)); |
241 |
|
|
else |
242 |
|
|
rexpadj = pow(2.0, (double)expadj); |
243 |
|
|
} else { |
244 |
|
|
if (!isflt(expcomp)) |
245 |
|
|
goto userr; |
246 |
|
|
rexpadj = atof(expcomp); |
247 |
|
|
expadj = log(rexpadj)/LOG2 + (rexpadj>1 ? .5 : -.5); |
248 |
greg |
2.24 |
if (!(doavg | doblur)) |
249 |
greg |
2.21 |
rexpadj = pow(2.0, (double)expadj); |
250 |
|
|
} |
251 |
schorsch |
2.36 |
} |
252 |
greg |
1.1 |
/* set view */ |
253 |
greg |
2.28 |
if (nextview(doblur ? stdin : (FILE *)NULL) == EOF) { |
254 |
greg |
2.24 |
fprintf(stderr, "%s: no view on standard input!\n", |
255 |
|
|
progname); |
256 |
greg |
1.1 |
exit(1); |
257 |
|
|
} |
258 |
greg |
1.18 |
normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu); |
259 |
greg |
1.1 |
/* allocate frame */ |
260 |
greg |
2.19 |
if (doavg) { |
261 |
|
|
ourspict = (COLOR *)bmalloc(hresolu*vresolu*sizeof(COLOR)); |
262 |
|
|
ourweigh = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
263 |
schorsch |
2.37 |
if ((ourspict == NULL) | (ourweigh == NULL)) |
264 |
greg |
2.19 |
syserror(progname); |
265 |
|
|
} else { |
266 |
|
|
ourpict = (COLR *)bmalloc(hresolu*vresolu*sizeof(COLR)); |
267 |
|
|
if (ourpict == NULL) |
268 |
|
|
syserror(progname); |
269 |
|
|
} |
270 |
greg |
2.24 |
if (doblur) { |
271 |
|
|
ourbpict = (COLOR *)bmalloc(hresolu*vresolu*sizeof(COLOR)); |
272 |
|
|
if (ourbpict == NULL) |
273 |
|
|
syserror(progname); |
274 |
|
|
} |
275 |
greg |
2.7 |
ourzbuf = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
276 |
greg |
2.19 |
if (ourzbuf == NULL) |
277 |
greg |
2.10 |
syserror(progname); |
278 |
greg |
2.13 |
/* new header */ |
279 |
|
|
newheader("RADIANCE", stdout); |
280 |
greg |
2.33 |
fputnow(stdout); |
281 |
greg |
2.24 |
/* run pictures */ |
282 |
|
|
do { |
283 |
schorsch |
2.35 |
memset((char *)ourzbuf, '\0', hresolu*vresolu*sizeof(float)); |
284 |
greg |
2.24 |
for (i = an; i < argc; i += 2) |
285 |
|
|
addpicture(argv[i], argv[i+1]); |
286 |
|
|
if (fillo&F_BACK) /* fill in spaces */ |
287 |
|
|
backpicture(fillfunc, fillsamp); |
288 |
|
|
else |
289 |
|
|
fillpicture(fillfunc); |
290 |
|
|
/* aft clipping */ |
291 |
|
|
clipaft(); |
292 |
|
|
} while (addblur() && nextview(stdin) != EOF); |
293 |
greg |
1.13 |
/* close calculation */ |
294 |
greg |
1.14 |
caldone(); |
295 |
greg |
1.1 |
/* add to header */ |
296 |
|
|
printargs(argc, argv, stdout); |
297 |
greg |
2.24 |
compavgview(); |
298 |
|
|
if (doblur | gotvfile) { |
299 |
greg |
1.25 |
fputs(VIEWSTR, stdout); |
300 |
greg |
2.24 |
fprintview(&avgview, stdout); |
301 |
greg |
1.25 |
putc('\n', stdout); |
302 |
greg |
1.1 |
} |
303 |
schorsch |
2.37 |
if ((pixaspect < .99) | (pixaspect > 1.01)) |
304 |
greg |
1.18 |
fputaspect(pixaspect, stdout); |
305 |
greg |
2.21 |
if (ourexp > 0) |
306 |
|
|
ourexp *= rexpadj; |
307 |
|
|
else |
308 |
|
|
ourexp = rexpadj; |
309 |
schorsch |
2.37 |
if ((ourexp < .995) | (ourexp > 1.005)) |
310 |
greg |
1.16 |
fputexpos(ourexp, stdout); |
311 |
greg |
2.27 |
if (strcmp(ourfmt, PICFMT)) /* print format if known */ |
312 |
|
|
fputformat(ourfmt, stdout); |
313 |
greg |
1.25 |
putc('\n', stdout); |
314 |
greg |
1.11 |
/* write picture */ |
315 |
greg |
1.1 |
writepicture(); |
316 |
greg |
1.11 |
/* write z file */ |
317 |
|
|
if (zfile != NULL) |
318 |
|
|
writedistance(zfile); |
319 |
greg |
1.1 |
|
320 |
|
|
exit(0); |
321 |
greg |
1.10 |
userr: |
322 |
|
|
fprintf(stderr, |
323 |
greg |
2.24 |
"Usage: %s [view opts][-t eps][-z zout][-e spec][-B][-a|-q][-fT][-n] pfile zspec ..\n", |
324 |
greg |
1.10 |
progname); |
325 |
|
|
exit(1); |
326 |
greg |
1.1 |
#undef check |
327 |
|
|
} |
328 |
|
|
|
329 |
|
|
|
330 |
gwlarson |
2.31 |
int |
331 |
greg |
1.1 |
headline(s) /* process header string */ |
332 |
|
|
char *s; |
333 |
|
|
{ |
334 |
greg |
1.33 |
char fmt[32]; |
335 |
greg |
1.1 |
|
336 |
greg |
2.13 |
if (isheadid(s)) |
337 |
gwlarson |
2.31 |
return(0); |
338 |
greg |
2.13 |
if (formatval(fmt, s)) { |
339 |
greg |
2.27 |
if (globmatch(ourfmt, fmt)) { |
340 |
|
|
wrongformat = 0; |
341 |
|
|
strcpy(ourfmt, fmt); |
342 |
|
|
} else |
343 |
|
|
wrongformat = 1; |
344 |
gwlarson |
2.31 |
return(0); |
345 |
greg |
1.33 |
} |
346 |
greg |
2.24 |
if (nvavg < 2) { |
347 |
|
|
putc('\t', stdout); |
348 |
|
|
fputs(s, stdout); |
349 |
|
|
} |
350 |
greg |
1.16 |
if (isexpos(s)) { |
351 |
|
|
theirexp *= exposval(s); |
352 |
gwlarson |
2.31 |
return(0); |
353 |
greg |
1.16 |
} |
354 |
greg |
2.5 |
if (isview(s) && sscanview(&theirview, s) > 0) |
355 |
|
|
gotview++; |
356 |
gwlarson |
2.31 |
return(0); |
357 |
greg |
1.1 |
} |
358 |
|
|
|
359 |
|
|
|
360 |
greg |
2.24 |
nextview(fp) /* get and set next view */ |
361 |
|
|
FILE *fp; |
362 |
|
|
{ |
363 |
|
|
char linebuf[256]; |
364 |
|
|
char *err; |
365 |
|
|
register int i; |
366 |
|
|
|
367 |
|
|
if (fp != NULL) { |
368 |
|
|
do /* get new view */ |
369 |
|
|
if (fgets(linebuf, sizeof(linebuf), fp) == NULL) |
370 |
|
|
return(EOF); |
371 |
|
|
while (!isview(linebuf) || !sscanview(&ourview, linebuf)); |
372 |
|
|
} |
373 |
|
|
/* set new view */ |
374 |
|
|
if ((err = setview(&ourview)) != NULL) { |
375 |
|
|
fprintf(stderr, "%s: %s\n", progname, err); |
376 |
|
|
exit(1); |
377 |
|
|
} |
378 |
|
|
if (!nvavg) { /* first view */ |
379 |
schorsch |
2.36 |
avgview = ourview; |
380 |
greg |
2.24 |
return(nvavg++); |
381 |
|
|
} |
382 |
|
|
/* add to average view */ |
383 |
|
|
for (i = 0; i < 3; i++) { |
384 |
|
|
avgview.vp[i] += ourview.vp[i]; |
385 |
|
|
avgview.vdir[i] += ourview.vdir[i]; |
386 |
|
|
avgview.vup[i] += ourview.vup[i]; |
387 |
|
|
} |
388 |
|
|
avgview.horiz += ourview.horiz; |
389 |
|
|
avgview.vert += ourview.vert; |
390 |
|
|
avgview.hoff += ourview.hoff; |
391 |
|
|
avgview.voff += ourview.voff; |
392 |
|
|
avgview.vfore += ourview.vfore; |
393 |
|
|
avgview.vaft += ourview.vaft; |
394 |
|
|
return(nvavg++); |
395 |
|
|
} |
396 |
|
|
|
397 |
|
|
|
398 |
|
|
compavgview() /* compute average view */ |
399 |
|
|
{ |
400 |
|
|
register int i; |
401 |
|
|
double f; |
402 |
|
|
|
403 |
|
|
if (nvavg < 2) |
404 |
|
|
return; |
405 |
|
|
f = 1.0/nvavg; |
406 |
|
|
for (i = 0; i < 3; i++) { |
407 |
|
|
avgview.vp[i] *= f; |
408 |
|
|
avgview.vdir[i] *= f; |
409 |
|
|
avgview.vup[i] *= f; |
410 |
|
|
} |
411 |
|
|
avgview.horiz *= f; |
412 |
|
|
avgview.vert *= f; |
413 |
|
|
avgview.hoff *= f; |
414 |
|
|
avgview.voff *= f; |
415 |
|
|
avgview.vfore *= f; |
416 |
|
|
avgview.vaft *= f; |
417 |
|
|
if (setview(&avgview) != NULL) /* in case of emergency... */ |
418 |
schorsch |
2.36 |
avgview = ourview; |
419 |
greg |
2.24 |
pixaspect = viewaspect(&avgview) * hresolu / vresolu; |
420 |
|
|
} |
421 |
|
|
|
422 |
|
|
|
423 |
greg |
1.10 |
addpicture(pfile, zspec) /* add picture to output */ |
424 |
|
|
char *pfile, *zspec; |
425 |
greg |
1.1 |
{ |
426 |
greg |
1.19 |
FILE *pfp; |
427 |
|
|
int zfd; |
428 |
greg |
1.8 |
char *err; |
429 |
greg |
1.1 |
COLR *scanin; |
430 |
greg |
1.15 |
float *zin; |
431 |
|
|
struct position *plast; |
432 |
greg |
2.16 |
struct bound *xlim, ylim; |
433 |
greg |
1.1 |
int y; |
434 |
greg |
1.10 |
/* open picture file */ |
435 |
greg |
2.10 |
if ((pfp = fopen(pfile, "r")) == NULL) |
436 |
|
|
syserror(pfile); |
437 |
greg |
1.16 |
/* get header with exposure and view */ |
438 |
|
|
theirexp = 1.0; |
439 |
schorsch |
2.36 |
theirview = stdview; |
440 |
greg |
1.16 |
gotview = 0; |
441 |
greg |
2.24 |
if (nvavg < 2) |
442 |
|
|
printf("%s:\n", pfile); |
443 |
greg |
1.33 |
getheader(pfp, headline, NULL); |
444 |
greg |
1.34 |
if (wrongformat || !gotview || !fgetsresolu(&tresolu, pfp)) { |
445 |
greg |
1.33 |
fprintf(stderr, "%s: picture format error\n", pfile); |
446 |
greg |
1.1 |
exit(1); |
447 |
|
|
} |
448 |
greg |
1.16 |
if (ourexp <= 0) |
449 |
|
|
ourexp = theirexp; |
450 |
|
|
else if (ABS(theirexp-ourexp) > .01*ourexp) |
451 |
|
|
fprintf(stderr, "%s: different exposure (warning)\n", pfile); |
452 |
schorsch |
2.37 |
if ( (err = setview(&theirview)) ) { |
453 |
greg |
1.1 |
fprintf(stderr, "%s: %s\n", pfile, err); |
454 |
|
|
exit(1); |
455 |
|
|
} |
456 |
greg |
1.5 |
/* compute transformation */ |
457 |
greg |
1.30 |
hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
458 |
greg |
2.16 |
/* get z specification or file */ |
459 |
greg |
1.34 |
zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
460 |
greg |
2.16 |
if (zin == NULL) |
461 |
greg |
2.10 |
syserror(progname); |
462 |
greg |
1.19 |
if ((zfd = open(zspec, O_RDONLY)) == -1) { |
463 |
greg |
1.10 |
double zvalue; |
464 |
|
|
register int x; |
465 |
greg |
2.19 |
if (!isflt(zspec) || (zvalue = atof(zspec)) <= 0.0) |
466 |
greg |
2.10 |
syserror(zspec); |
467 |
greg |
1.34 |
for (x = scanlen(&tresolu); x-- > 0; ) |
468 |
greg |
1.10 |
zin[x] = zvalue; |
469 |
|
|
} |
470 |
greg |
2.16 |
/* compute transferrable perimeter */ |
471 |
|
|
xlim = (struct bound *)malloc(numscans(&tresolu)*sizeof(struct bound)); |
472 |
|
|
if (xlim == NULL) |
473 |
|
|
syserror(progname); |
474 |
|
|
if (!getperim(xlim, &ylim, zin, zfd)) { /* overlapping area? */ |
475 |
greg |
2.33 |
free((void *)zin); |
476 |
|
|
free((void *)xlim); |
477 |
greg |
2.16 |
if (zfd != -1) |
478 |
|
|
close(zfd); |
479 |
|
|
fclose(pfp); |
480 |
|
|
return; |
481 |
|
|
} |
482 |
|
|
/* allocate scanlines */ |
483 |
|
|
scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
484 |
|
|
plast = (struct position *)calloc(scanlen(&tresolu), |
485 |
|
|
sizeof(struct position)); |
486 |
schorsch |
2.37 |
if ((scanin == NULL) | (plast == NULL)) |
487 |
greg |
2.16 |
syserror(progname); |
488 |
|
|
/* skip to starting point */ |
489 |
|
|
for (y = 0; y < ylim.min; y++) |
490 |
|
|
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
491 |
|
|
fprintf(stderr, "%s: read error\n", pfile); |
492 |
|
|
exit(1); |
493 |
|
|
} |
494 |
|
|
if (zfd != -1 && lseek(zfd, |
495 |
greg |
2.38 |
(off_t)ylim.min*scanlen(&tresolu)*sizeof(float), |
496 |
|
|
SEEK_SET) < 0) |
497 |
greg |
2.16 |
syserror(zspec); |
498 |
greg |
1.1 |
/* load image */ |
499 |
greg |
2.16 |
for (y = ylim.min; y <= ylim.max; y++) { |
500 |
greg |
1.34 |
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
501 |
greg |
1.1 |
fprintf(stderr, "%s: read error\n", pfile); |
502 |
|
|
exit(1); |
503 |
|
|
} |
504 |
greg |
2.16 |
if (zfd != -1 && read(zfd, (char *)zin, |
505 |
greg |
1.34 |
scanlen(&tresolu)*sizeof(float)) |
506 |
greg |
2.16 |
< scanlen(&tresolu)*sizeof(float)) |
507 |
|
|
syserror(zspec); |
508 |
|
|
addscanline(xlim+y, y, scanin, zin, plast); |
509 |
greg |
1.1 |
} |
510 |
|
|
/* clean up */ |
511 |
greg |
2.33 |
free((void *)xlim); |
512 |
|
|
free((void *)scanin); |
513 |
|
|
free((void *)zin); |
514 |
|
|
free((void *)plast); |
515 |
greg |
1.1 |
fclose(pfp); |
516 |
greg |
1.19 |
if (zfd != -1) |
517 |
|
|
close(zfd); |
518 |
greg |
1.1 |
} |
519 |
|
|
|
520 |
|
|
|
521 |
greg |
1.5 |
pixform(xfmat, vw1, vw2) /* compute view1 to view2 matrix */ |
522 |
greg |
2.19 |
register MAT4 xfmat; |
523 |
greg |
1.5 |
register VIEW *vw1, *vw2; |
524 |
|
|
{ |
525 |
|
|
double m4t[4][4]; |
526 |
|
|
|
527 |
schorsch |
2.37 |
if ((vw1->type != VT_PER) & (vw1->type != VT_PAR)) |
528 |
greg |
1.30 |
return(0); |
529 |
schorsch |
2.37 |
if ((vw2->type != VT_PER) & (vw2->type != VT_PAR)) |
530 |
greg |
1.30 |
return(0); |
531 |
greg |
1.5 |
setident4(xfmat); |
532 |
greg |
1.17 |
xfmat[0][0] = vw1->hvec[0]; |
533 |
|
|
xfmat[0][1] = vw1->hvec[1]; |
534 |
|
|
xfmat[0][2] = vw1->hvec[2]; |
535 |
|
|
xfmat[1][0] = vw1->vvec[0]; |
536 |
|
|
xfmat[1][1] = vw1->vvec[1]; |
537 |
|
|
xfmat[1][2] = vw1->vvec[2]; |
538 |
greg |
1.5 |
xfmat[2][0] = vw1->vdir[0]; |
539 |
|
|
xfmat[2][1] = vw1->vdir[1]; |
540 |
|
|
xfmat[2][2] = vw1->vdir[2]; |
541 |
|
|
xfmat[3][0] = vw1->vp[0]; |
542 |
|
|
xfmat[3][1] = vw1->vp[1]; |
543 |
|
|
xfmat[3][2] = vw1->vp[2]; |
544 |
|
|
setident4(m4t); |
545 |
greg |
1.17 |
m4t[0][0] = vw2->hvec[0]/vw2->hn2; |
546 |
|
|
m4t[1][0] = vw2->hvec[1]/vw2->hn2; |
547 |
|
|
m4t[2][0] = vw2->hvec[2]/vw2->hn2; |
548 |
|
|
m4t[3][0] = -DOT(vw2->vp,vw2->hvec)/vw2->hn2; |
549 |
|
|
m4t[0][1] = vw2->vvec[0]/vw2->vn2; |
550 |
|
|
m4t[1][1] = vw2->vvec[1]/vw2->vn2; |
551 |
|
|
m4t[2][1] = vw2->vvec[2]/vw2->vn2; |
552 |
|
|
m4t[3][1] = -DOT(vw2->vp,vw2->vvec)/vw2->vn2; |
553 |
greg |
1.5 |
m4t[0][2] = vw2->vdir[0]; |
554 |
|
|
m4t[1][2] = vw2->vdir[1]; |
555 |
|
|
m4t[2][2] = vw2->vdir[2]; |
556 |
|
|
m4t[3][2] = -DOT(vw2->vp,vw2->vdir); |
557 |
|
|
multmat4(xfmat, xfmat, m4t); |
558 |
greg |
1.30 |
return(1); |
559 |
greg |
1.5 |
} |
560 |
|
|
|
561 |
|
|
|
562 |
greg |
2.16 |
addscanline(xl, y, pline, zline, lasty) /* add scanline to output */ |
563 |
|
|
struct bound *xl; |
564 |
greg |
1.1 |
int y; |
565 |
|
|
COLR *pline; |
566 |
|
|
float *zline; |
567 |
greg |
1.15 |
struct position *lasty; /* input/output */ |
568 |
greg |
1.1 |
{ |
569 |
greg |
1.30 |
FVECT pos; |
570 |
greg |
1.15 |
struct position lastx, newpos; |
571 |
greg |
2.19 |
double wt; |
572 |
greg |
1.1 |
register int x; |
573 |
|
|
|
574 |
greg |
1.20 |
lastx.z = 0; |
575 |
greg |
2.16 |
for (x = xl->max; x >= xl->min; x--) { |
576 |
greg |
1.34 |
pix2loc(pos, &tresolu, x, y); |
577 |
greg |
1.5 |
pos[2] = zline[x]; |
578 |
greg |
2.19 |
if ((wt = movepixel(pos)) <= FTINY) { |
579 |
greg |
1.15 |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
580 |
greg |
1.1 |
continue; |
581 |
greg |
1.15 |
} |
582 |
greg |
2.19 |
/* add pixel to our image */ |
583 |
greg |
1.17 |
newpos.x = pos[0] * hresolu; |
584 |
|
|
newpos.y = pos[1] * vresolu; |
585 |
greg |
1.15 |
newpos.z = zline[x]; |
586 |
greg |
2.19 |
addpixel(&newpos, &lastx, &lasty[x], pline[x], wt, pos[2]); |
587 |
|
|
lasty[x].x = lastx.x = newpos.x; |
588 |
|
|
lasty[x].y = lastx.y = newpos.y; |
589 |
|
|
lasty[x].z = lastx.z = newpos.z; |
590 |
greg |
1.1 |
} |
591 |
|
|
} |
592 |
|
|
|
593 |
|
|
|
594 |
greg |
2.19 |
addpixel(p0, p1, p2, pix, w, z) /* fill in pixel parallelogram */ |
595 |
greg |
1.15 |
struct position *p0, *p1, *p2; |
596 |
greg |
1.8 |
COLR pix; |
597 |
greg |
2.19 |
double w; |
598 |
greg |
1.8 |
double z; |
599 |
|
|
{ |
600 |
greg |
1.15 |
double zt = 2.*zeps*p0->z; /* threshold */ |
601 |
greg |
2.19 |
COLOR pval; /* converted+weighted pixel */ |
602 |
greg |
1.15 |
int s1x, s1y, s2x, s2y; /* step sizes */ |
603 |
|
|
int l1, l2, c1, c2; /* side lengths and counters */ |
604 |
|
|
int p1isy; /* p0p1 along y? */ |
605 |
|
|
int x1, y1; /* p1 position */ |
606 |
|
|
register int x, y; /* final position */ |
607 |
|
|
|
608 |
|
|
/* compute vector p0p1 */ |
609 |
greg |
1.25 |
if (fillo&F_FORE && ABS(p1->z-p0->z) <= zt) { |
610 |
greg |
1.15 |
s1x = p1->x - p0->x; |
611 |
|
|
s1y = p1->y - p0->y; |
612 |
|
|
l1 = ABS(s1x); |
613 |
schorsch |
2.37 |
if ( (p1isy = (ABS(s1y) > l1)) ) |
614 |
greg |
1.15 |
l1 = ABS(s1y); |
615 |
greg |
2.20 |
else if (l1 < 1) |
616 |
greg |
2.19 |
l1 = 1; |
617 |
greg |
1.15 |
} else { |
618 |
|
|
l1 = s1x = s1y = 1; |
619 |
|
|
p1isy = -1; |
620 |
|
|
} |
621 |
|
|
/* compute vector p0p2 */ |
622 |
greg |
1.25 |
if (fillo&F_FORE && ABS(p2->z-p0->z) <= zt) { |
623 |
greg |
1.15 |
s2x = p2->x - p0->x; |
624 |
|
|
s2y = p2->y - p0->y; |
625 |
|
|
if (p1isy == 1) |
626 |
|
|
l2 = ABS(s2x); |
627 |
|
|
else { |
628 |
|
|
l2 = ABS(s2y); |
629 |
|
|
if (p1isy != 0 && ABS(s2x) > l2) |
630 |
|
|
l2 = ABS(s2x); |
631 |
|
|
} |
632 |
greg |
2.19 |
if (l2 < 1) |
633 |
|
|
l2 = 1; |
634 |
greg |
1.15 |
} else |
635 |
|
|
l2 = s2x = s2y = 1; |
636 |
|
|
/* fill the parallelogram */ |
637 |
greg |
2.19 |
if (averaging) { |
638 |
|
|
colr_color(pval, pix); |
639 |
|
|
scalecolor(pval, w); |
640 |
|
|
} |
641 |
greg |
1.15 |
for (c1 = l1; c1-- > 0; ) { |
642 |
|
|
x1 = p0->x + c1*s1x/l1; |
643 |
|
|
y1 = p0->y + c1*s1y/l1; |
644 |
|
|
for (c2 = l2; c2-- > 0; ) { |
645 |
|
|
x = x1 + c2*s2x/l2; |
646 |
schorsch |
2.37 |
if ((x < 0) | (x >= hresolu)) |
647 |
greg |
1.28 |
continue; |
648 |
greg |
1.15 |
y = y1 + c2*s2y/l2; |
649 |
schorsch |
2.37 |
if ((y < 0) | (y >= vresolu)) |
650 |
greg |
1.28 |
continue; |
651 |
greg |
2.19 |
if (averaging) { |
652 |
|
|
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
653 |
greg |
1.15 |
> zeps*zscan(y)[x]) { |
654 |
greg |
2.19 |
copycolor(sscan(y)[x], pval); |
655 |
|
|
wscan(y)[x] = w; |
656 |
|
|
zscan(y)[x] = z; |
657 |
|
|
} else if (z-zscan(y)[x] <= zeps*zscan(y)[x]) { |
658 |
|
|
addcolor(sscan(y)[x], pval); |
659 |
|
|
wscan(y)[x] += w; |
660 |
|
|
} |
661 |
|
|
} else if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
662 |
|
|
> zeps*zscan(y)[x]) { |
663 |
|
|
copycolr(pscan(y)[x], pix); |
664 |
greg |
1.8 |
zscan(y)[x] = z; |
665 |
|
|
} |
666 |
greg |
1.15 |
} |
667 |
|
|
} |
668 |
greg |
2.16 |
} |
669 |
|
|
|
670 |
|
|
|
671 |
greg |
2.19 |
double |
672 |
greg |
2.18 |
movepixel(pos) /* reposition image point */ |
673 |
greg |
2.20 |
register FVECT pos; |
674 |
greg |
2.18 |
{ |
675 |
greg |
2.19 |
FVECT pt, tdir, odir; |
676 |
greg |
2.20 |
double d; |
677 |
greg |
2.18 |
|
678 |
|
|
if (pos[2] <= 0) /* empty pixel */ |
679 |
greg |
2.19 |
return(0); |
680 |
greg |
2.22 |
if (usematrix) { |
681 |
greg |
2.18 |
pos[0] += theirview.hoff - .5; |
682 |
|
|
pos[1] += theirview.voff - .5; |
683 |
schorsch |
2.37 |
if (normdist & (theirview.type == VT_PER)) |
684 |
greg |
2.23 |
d = sqrt(1. + pos[0]*pos[0]*theirview.hn2 |
685 |
|
|
+ pos[1]*pos[1]*theirview.vn2); |
686 |
|
|
else |
687 |
|
|
d = 1.; |
688 |
|
|
pos[2] += d*theirview.vfore; |
689 |
greg |
2.18 |
if (theirview.type == VT_PER) { |
690 |
greg |
2.23 |
pos[2] /= d; |
691 |
greg |
2.18 |
pos[0] *= pos[2]; |
692 |
|
|
pos[1] *= pos[2]; |
693 |
|
|
} |
694 |
|
|
multp3(pos, pos, theirs2ours); |
695 |
greg |
2.23 |
if (pos[2] <= ourview.vfore) |
696 |
greg |
2.19 |
return(0); |
697 |
greg |
2.18 |
if (ourview.type == VT_PER) { |
698 |
|
|
pos[0] /= pos[2]; |
699 |
|
|
pos[1] /= pos[2]; |
700 |
|
|
} |
701 |
|
|
pos[0] += .5 - ourview.hoff; |
702 |
|
|
pos[1] += .5 - ourview.voff; |
703 |
greg |
2.23 |
pos[2] -= ourview.vfore; |
704 |
greg |
2.19 |
} else { |
705 |
|
|
if (viewray(pt, tdir, &theirview, pos[0], pos[1]) < -FTINY) |
706 |
|
|
return(0); |
707 |
schorsch |
2.37 |
if ((!normdist) & (theirview.type == VT_PER)) /* adjust */ |
708 |
greg |
2.20 |
pos[2] *= sqrt(1. + pos[0]*pos[0]*theirview.hn2 |
709 |
|
|
+ pos[1]*pos[1]*theirview.vn2); |
710 |
greg |
2.19 |
pt[0] += tdir[0]*pos[2]; |
711 |
|
|
pt[1] += tdir[1]*pos[2]; |
712 |
|
|
pt[2] += tdir[2]*pos[2]; |
713 |
|
|
viewloc(pos, &ourview, pt); |
714 |
|
|
if (pos[2] <= 0) |
715 |
|
|
return(0); |
716 |
|
|
} |
717 |
schorsch |
2.37 |
if ((pos[0] < 0) | (pos[0] >= 1-FTINY) | (pos[1] < 0) | (pos[1] >= 1-FTINY)) |
718 |
greg |
2.18 |
return(0); |
719 |
greg |
2.19 |
if (!averaging) |
720 |
|
|
return(1); |
721 |
gwlarson |
2.32 |
/* compute pixel weight */ |
722 |
|
|
if (ourview.type == VT_PAR) { |
723 |
|
|
d = DOT(ourview.vdir,tdir); |
724 |
|
|
d = 1. - d*d; |
725 |
|
|
} else { |
726 |
|
|
VSUB(odir, pt, ourview.vp); |
727 |
|
|
d = DOT(odir,tdir); |
728 |
|
|
d = 1. - d*d/DOT(odir,odir); |
729 |
|
|
} |
730 |
|
|
if (d <= 1./MAXWT/MAXWT) |
731 |
greg |
2.19 |
return(MAXWT); /* clip to maximum weight */ |
732 |
gwlarson |
2.32 |
return(1./sqrt(d)); |
733 |
greg |
2.18 |
} |
734 |
|
|
|
735 |
|
|
|
736 |
greg |
2.16 |
getperim(xl, yl, zline, zfd) /* compute overlapping image area */ |
737 |
|
|
register struct bound *xl; |
738 |
|
|
struct bound *yl; |
739 |
|
|
float *zline; |
740 |
|
|
int zfd; |
741 |
|
|
{ |
742 |
|
|
int step; |
743 |
|
|
FVECT pos; |
744 |
|
|
register int x, y; |
745 |
|
|
/* set up step size */ |
746 |
|
|
if (scanlen(&tresolu) < numscans(&tresolu)) |
747 |
|
|
step = scanlen(&tresolu)/NSTEPS; |
748 |
|
|
else |
749 |
|
|
step = numscans(&tresolu)/NSTEPS; |
750 |
|
|
if (step < MINSTEP) { /* not worth cropping? */ |
751 |
|
|
yl->min = 0; |
752 |
|
|
yl->max = numscans(&tresolu) - 1; |
753 |
|
|
x = scanlen(&tresolu) - 1; |
754 |
|
|
for (y = numscans(&tresolu); y--; ) { |
755 |
|
|
xl[y].min = 0; |
756 |
|
|
xl[y].max = x; |
757 |
|
|
} |
758 |
|
|
return(1); |
759 |
|
|
} |
760 |
|
|
yl->min = 32000; yl->max = 0; /* search for points on image */ |
761 |
|
|
for (y = step - 1; y < numscans(&tresolu); y += step) { |
762 |
|
|
if (zfd != -1) { |
763 |
greg |
2.33 |
if (lseek(zfd, (off_t)y*scanlen(&tresolu)*sizeof(float), |
764 |
greg |
2.38 |
SEEK_SET) < 0) |
765 |
greg |
2.16 |
syserror("lseek"); |
766 |
|
|
if (read(zfd, (char *)zline, |
767 |
|
|
scanlen(&tresolu)*sizeof(float)) |
768 |
|
|
< scanlen(&tresolu)*sizeof(float)) |
769 |
|
|
syserror("read"); |
770 |
|
|
} |
771 |
|
|
xl[y].min = 32000; xl[y].max = 0; /* x max */ |
772 |
|
|
for (x = scanlen(&tresolu); (x -= step) > 0; ) { |
773 |
|
|
pix2loc(pos, &tresolu, x, y); |
774 |
|
|
pos[2] = zline[x]; |
775 |
greg |
2.19 |
if (movepixel(pos) > FTINY) { |
776 |
greg |
2.16 |
xl[y].max = x + step - 1; |
777 |
|
|
xl[y].min = x - step + 1; /* x min */ |
778 |
|
|
if (xl[y].min < 0) |
779 |
|
|
xl[y].min = 0; |
780 |
|
|
for (x = step - 1; x < xl[y].max; x += step) { |
781 |
|
|
pix2loc(pos, &tresolu, x, y); |
782 |
|
|
pos[2] = zline[x]; |
783 |
greg |
2.19 |
if (movepixel(pos) > FTINY) { |
784 |
greg |
2.16 |
xl[y].min = x - step + 1; |
785 |
|
|
break; |
786 |
|
|
} |
787 |
|
|
} |
788 |
|
|
if (y < yl->min) /* y limits */ |
789 |
|
|
yl->min = y - step + 1; |
790 |
|
|
yl->max = y + step - 1; |
791 |
|
|
break; |
792 |
|
|
} |
793 |
|
|
} |
794 |
|
|
/* fill in between */ |
795 |
greg |
2.18 |
if (y < step) { |
796 |
greg |
2.16 |
xl[y-1].min = xl[y].min; |
797 |
|
|
xl[y-1].max = xl[y].max; |
798 |
greg |
2.18 |
} else { |
799 |
|
|
if (xl[y].min < xl[y-step].min) |
800 |
|
|
xl[y-1].min = xl[y].min; |
801 |
|
|
else |
802 |
|
|
xl[y-1].min = xl[y-step].min; |
803 |
|
|
if (xl[y].max > xl[y-step].max) |
804 |
|
|
xl[y-1].max = xl[y].max; |
805 |
|
|
else |
806 |
|
|
xl[y-1].max = xl[y-step].max; |
807 |
|
|
} |
808 |
greg |
2.16 |
for (x = 2; x < step; x++) |
809 |
schorsch |
2.36 |
*(xl+y-x) = *(xl+y-1); |
810 |
greg |
2.16 |
} |
811 |
|
|
if (yl->max >= numscans(&tresolu)) |
812 |
|
|
yl->max = numscans(&tresolu) - 1; |
813 |
greg |
2.20 |
y -= step; |
814 |
greg |
2.16 |
for (x = numscans(&tresolu) - 1; x > y; x--) /* fill bottom rows */ |
815 |
schorsch |
2.36 |
*(xl+x) = *(xl+y); |
816 |
greg |
2.16 |
return(yl->max >= yl->min); |
817 |
greg |
1.8 |
} |
818 |
|
|
|
819 |
|
|
|
820 |
greg |
1.26 |
backpicture(fill, samp) /* background fill algorithm */ |
821 |
greg |
1.25 |
int (*fill)(); |
822 |
greg |
1.26 |
int samp; |
823 |
greg |
1.1 |
{ |
824 |
greg |
1.2 |
int *yback, xback; |
825 |
greg |
1.1 |
int y; |
826 |
greg |
1.2 |
register int x, i; |
827 |
|
|
/* get back buffer */ |
828 |
greg |
1.17 |
yback = (int *)malloc(hresolu*sizeof(int)); |
829 |
greg |
1.15 |
if (yback == NULL) |
830 |
greg |
2.10 |
syserror(progname); |
831 |
greg |
1.17 |
for (x = 0; x < hresolu; x++) |
832 |
greg |
1.4 |
yback[x] = -2; |
833 |
greg |
1.7 |
/* |
834 |
|
|
* Xback and yback are the pixel locations of suitable |
835 |
|
|
* background values in each direction. |
836 |
|
|
* A value of -2 means unassigned, and -1 means |
837 |
|
|
* that there is no suitable background in this direction. |
838 |
|
|
*/ |
839 |
greg |
1.2 |
/* fill image */ |
840 |
greg |
1.17 |
for (y = 0; y < vresolu; y++) { |
841 |
greg |
1.4 |
xback = -2; |
842 |
greg |
1.17 |
for (x = 0; x < hresolu; x++) |
843 |
greg |
1.8 |
if (zscan(y)[x] <= 0) { /* empty pixel */ |
844 |
greg |
1.7 |
/* |
845 |
|
|
* First, find background from above or below. |
846 |
|
|
* (farthest assigned pixel) |
847 |
|
|
*/ |
848 |
greg |
1.4 |
if (yback[x] == -2) { |
849 |
greg |
1.17 |
for (i = y+1; i < vresolu; i++) |
850 |
greg |
1.8 |
if (zscan(i)[x] > 0) |
851 |
greg |
1.4 |
break; |
852 |
greg |
1.17 |
if (i < vresolu |
853 |
greg |
1.2 |
&& (y <= 0 || zscan(y-1)[x] < zscan(i)[x])) |
854 |
greg |
1.4 |
yback[x] = i; |
855 |
|
|
else |
856 |
|
|
yback[x] = y-1; |
857 |
greg |
1.2 |
} |
858 |
greg |
1.7 |
/* |
859 |
|
|
* Next, find background from left or right. |
860 |
|
|
*/ |
861 |
greg |
1.4 |
if (xback == -2) { |
862 |
greg |
1.17 |
for (i = x+1; i < hresolu; i++) |
863 |
greg |
1.8 |
if (zscan(y)[i] > 0) |
864 |
greg |
1.4 |
break; |
865 |
greg |
1.17 |
if (i < hresolu |
866 |
greg |
1.4 |
&& (x <= 0 || zscan(y)[x-1] < zscan(y)[i])) |
867 |
|
|
xback = i; |
868 |
|
|
else |
869 |
|
|
xback = x-1; |
870 |
|
|
} |
871 |
greg |
1.7 |
/* |
872 |
greg |
1.26 |
* If we have no background for this pixel, |
873 |
|
|
* use the given fill function. |
874 |
greg |
1.11 |
*/ |
875 |
greg |
1.27 |
if (xback < 0 && yback[x] < 0) |
876 |
|
|
goto fillit; |
877 |
greg |
1.11 |
/* |
878 |
greg |
1.7 |
* Compare, and use the background that is |
879 |
|
|
* farther, unless one of them is next to us. |
880 |
greg |
1.27 |
* If the background is too distant, call |
881 |
|
|
* the fill function. |
882 |
greg |
1.7 |
*/ |
883 |
greg |
1.11 |
if ( yback[x] < 0 |
884 |
|
|
|| (xback >= 0 && ABS(x-xback) <= 1) |
885 |
greg |
1.4 |
|| ( ABS(y-yback[x]) > 1 |
886 |
greg |
1.11 |
&& zscan(yback[x])[x] |
887 |
greg |
1.13 |
< zscan(y)[xback] ) ) { |
888 |
greg |
1.27 |
if (samp > 0 && ABS(x-xback) >= samp) |
889 |
|
|
goto fillit; |
890 |
greg |
2.19 |
if (averaging) { |
891 |
|
|
copycolor(sscan(y)[x], |
892 |
|
|
sscan(y)[xback]); |
893 |
|
|
wscan(y)[x] = wscan(y)[xback]; |
894 |
|
|
} else |
895 |
|
|
copycolr(pscan(y)[x], |
896 |
|
|
pscan(y)[xback]); |
897 |
greg |
1.13 |
zscan(y)[x] = zscan(y)[xback]; |
898 |
|
|
} else { |
899 |
greg |
1.27 |
if (samp > 0 && ABS(y-yback[x]) > samp) |
900 |
|
|
goto fillit; |
901 |
greg |
2.19 |
if (averaging) { |
902 |
|
|
copycolor(sscan(y)[x], |
903 |
|
|
sscan(yback[x])[x]); |
904 |
|
|
wscan(y)[x] = |
905 |
|
|
wscan(yback[x])[x]; |
906 |
|
|
} else |
907 |
|
|
copycolr(pscan(y)[x], |
908 |
|
|
pscan(yback[x])[x]); |
909 |
greg |
1.13 |
zscan(y)[x] = zscan(yback[x])[x]; |
910 |
greg |
1.27 |
} |
911 |
|
|
continue; |
912 |
|
|
fillit: |
913 |
|
|
(*fill)(x,y); |
914 |
|
|
if (fill == rcalfill) { /* use it */ |
915 |
|
|
clearqueue(); |
916 |
|
|
xback = x; |
917 |
|
|
yback[x] = y; |
918 |
greg |
1.13 |
} |
919 |
greg |
1.4 |
} else { /* full pixel */ |
920 |
|
|
yback[x] = -2; |
921 |
|
|
xback = -2; |
922 |
|
|
} |
923 |
|
|
} |
924 |
greg |
2.33 |
free((void *)yback); |
925 |
greg |
1.1 |
} |
926 |
|
|
|
927 |
|
|
|
928 |
greg |
1.25 |
fillpicture(fill) /* paint in empty pixels using fill */ |
929 |
|
|
int (*fill)(); |
930 |
greg |
1.11 |
{ |
931 |
|
|
register int x, y; |
932 |
|
|
|
933 |
greg |
1.17 |
for (y = 0; y < vresolu; y++) |
934 |
|
|
for (x = 0; x < hresolu; x++) |
935 |
greg |
1.11 |
if (zscan(y)[x] <= 0) |
936 |
greg |
1.25 |
(*fill)(x,y); |
937 |
greg |
2.26 |
if (fill == rcalfill) |
938 |
|
|
clearqueue(); |
939 |
greg |
2.15 |
} |
940 |
|
|
|
941 |
|
|
|
942 |
|
|
clipaft() /* perform aft clipping as indicated */ |
943 |
|
|
{ |
944 |
|
|
register int x, y; |
945 |
schorsch |
2.37 |
int adjtest = (ourview.type == VT_PER) & zisnorm; |
946 |
greg |
2.15 |
double tstdist; |
947 |
|
|
double yzn2, vx; |
948 |
|
|
|
949 |
|
|
if (ourview.vaft <= FTINY) |
950 |
greg |
2.24 |
return(0); |
951 |
greg |
2.17 |
tstdist = ourview.vaft - ourview.vfore; |
952 |
greg |
2.15 |
for (y = 0; y < vresolu; y++) { |
953 |
greg |
2.22 |
if (adjtest) { /* adjust test */ |
954 |
greg |
2.15 |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
955 |
|
|
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
956 |
greg |
2.17 |
tstdist = (ourview.vaft - ourview.vfore)*sqrt(yzn2); |
957 |
greg |
2.15 |
} |
958 |
|
|
for (x = 0; x < hresolu; x++) |
959 |
|
|
if (zscan(y)[x] > tstdist) { |
960 |
greg |
2.22 |
if (adjtest) { |
961 |
greg |
2.15 |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
962 |
greg |
2.17 |
if (zscan(y)[x] <= (ourview.vaft - |
963 |
|
|
ourview.vfore) * |
964 |
greg |
2.15 |
sqrt(vx*vx*ourview.hn2 + yzn2)) |
965 |
|
|
continue; |
966 |
|
|
} |
967 |
greg |
2.19 |
if (averaging) |
968 |
schorsch |
2.35 |
memset(sscan(y)[x], '\0', sizeof(COLOR)); |
969 |
greg |
2.19 |
else |
970 |
schorsch |
2.35 |
memset(pscan(y)[x], '\0', sizeof(COLR)); |
971 |
greg |
2.15 |
zscan(y)[x] = 0.0; |
972 |
|
|
} |
973 |
|
|
} |
974 |
greg |
2.24 |
return(1); |
975 |
greg |
1.11 |
} |
976 |
|
|
|
977 |
|
|
|
978 |
greg |
2.24 |
addblur() /* add to blurred picture */ |
979 |
|
|
{ |
980 |
|
|
COLOR cval; |
981 |
|
|
double d; |
982 |
|
|
register int i; |
983 |
|
|
|
984 |
|
|
if (!blurring) |
985 |
|
|
return(0); |
986 |
|
|
i = hresolu*vresolu; |
987 |
|
|
if (nvavg < 2) |
988 |
|
|
if (averaging) |
989 |
|
|
while (i--) { |
990 |
|
|
copycolor(ourbpict[i], ourspict[i]); |
991 |
|
|
d = 1.0/ourweigh[i]; |
992 |
|
|
scalecolor(ourbpict[i], d); |
993 |
|
|
} |
994 |
|
|
else |
995 |
|
|
while (i--) |
996 |
|
|
colr_color(ourbpict[i], ourpict[i]); |
997 |
|
|
else |
998 |
|
|
if (averaging) |
999 |
|
|
while (i--) { |
1000 |
|
|
copycolor(cval, ourspict[i]); |
1001 |
|
|
d = 1.0/ourweigh[i]; |
1002 |
|
|
scalecolor(cval, d); |
1003 |
|
|
addcolor(ourbpict[i], cval); |
1004 |
|
|
} |
1005 |
|
|
else |
1006 |
|
|
while (i--) { |
1007 |
|
|
colr_color(cval, ourpict[i]); |
1008 |
|
|
addcolor(ourbpict[i], cval); |
1009 |
|
|
} |
1010 |
|
|
/* print view */ |
1011 |
|
|
printf("VIEW%d:", nvavg); |
1012 |
|
|
fprintview(&ourview, stdout); |
1013 |
|
|
putchar('\n'); |
1014 |
|
|
return(1); |
1015 |
|
|
} |
1016 |
|
|
|
1017 |
|
|
|
1018 |
greg |
2.21 |
writepicture() /* write out picture (alters buffer) */ |
1019 |
greg |
1.1 |
{ |
1020 |
|
|
int y; |
1021 |
greg |
2.19 |
register int x; |
1022 |
|
|
double d; |
1023 |
greg |
1.1 |
|
1024 |
greg |
1.34 |
fprtresolu(hresolu, vresolu, stdout); |
1025 |
greg |
1.17 |
for (y = vresolu-1; y >= 0; y--) |
1026 |
greg |
2.24 |
if (blurring) { |
1027 |
|
|
for (x = 0; x < hresolu; x++) { /* compute avg. */ |
1028 |
|
|
d = rexpadj/nvavg; |
1029 |
|
|
scalecolor(bscan(y)[x], d); |
1030 |
|
|
} |
1031 |
|
|
if (fwritescan(bscan(y), hresolu, stdout) < 0) |
1032 |
|
|
syserror(progname); |
1033 |
|
|
} else if (averaging) { |
1034 |
greg |
2.19 |
for (x = 0; x < hresolu; x++) { /* average pixels */ |
1035 |
greg |
2.21 |
d = rexpadj/wscan(y)[x]; |
1036 |
greg |
2.19 |
scalecolor(sscan(y)[x], d); |
1037 |
|
|
} |
1038 |
|
|
if (fwritescan(sscan(y), hresolu, stdout) < 0) |
1039 |
|
|
syserror(progname); |
1040 |
greg |
2.21 |
} else { |
1041 |
|
|
if (expadj) |
1042 |
|
|
shiftcolrs(pscan(y), hresolu, expadj); |
1043 |
|
|
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
1044 |
|
|
syserror(progname); |
1045 |
|
|
} |
1046 |
greg |
1.11 |
} |
1047 |
|
|
|
1048 |
|
|
|
1049 |
greg |
2.22 |
writedistance(fname) /* write out z file (alters buffer) */ |
1050 |
greg |
1.11 |
char *fname; |
1051 |
|
|
{ |
1052 |
greg |
2.22 |
int donorm = normdist & !zisnorm ? 1 : |
1053 |
schorsch |
2.37 |
(ourview.type == VT_PER) & !normdist & zisnorm ? -1 : 0; |
1054 |
greg |
1.19 |
int fd; |
1055 |
greg |
1.11 |
int y; |
1056 |
|
|
|
1057 |
greg |
2.10 |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) |
1058 |
|
|
syserror(fname); |
1059 |
greg |
1.17 |
for (y = vresolu-1; y >= 0; y--) { |
1060 |
greg |
1.11 |
if (donorm) { |
1061 |
greg |
2.22 |
double vx, yzn2, d; |
1062 |
greg |
1.11 |
register int x; |
1063 |
greg |
1.29 |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
1064 |
greg |
1.17 |
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
1065 |
|
|
for (x = 0; x < hresolu; x++) { |
1066 |
greg |
1.29 |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
1067 |
greg |
2.22 |
d = sqrt(vx*vx*ourview.hn2 + yzn2); |
1068 |
|
|
if (donorm > 0) |
1069 |
|
|
zscan(y)[x] *= d; |
1070 |
|
|
else |
1071 |
|
|
zscan(y)[x] /= d; |
1072 |
greg |
1.11 |
} |
1073 |
greg |
2.22 |
} |
1074 |
|
|
if (write(fd, (char *)zscan(y), hresolu*sizeof(float)) |
1075 |
greg |
2.10 |
< hresolu*sizeof(float)) |
1076 |
|
|
syserror(fname); |
1077 |
greg |
1.11 |
} |
1078 |
greg |
1.19 |
close(fd); |
1079 |
greg |
1.10 |
} |
1080 |
|
|
|
1081 |
|
|
|
1082 |
greg |
1.12 |
backfill(x, y) /* fill pixel with background */ |
1083 |
|
|
int x, y; |
1084 |
|
|
{ |
1085 |
greg |
2.19 |
if (averaging) { |
1086 |
|
|
copycolor(sscan(y)[x], backcolor); |
1087 |
|
|
wscan(y)[x] = 1; |
1088 |
|
|
} else |
1089 |
|
|
copycolr(pscan(y)[x], backcolr); |
1090 |
greg |
1.13 |
zscan(y)[x] = backz; |
1091 |
|
|
} |
1092 |
|
|
|
1093 |
|
|
|
1094 |
greg |
2.3 |
calstart(prog, args) /* start fill calculation */ |
1095 |
greg |
1.13 |
char *prog, *args; |
1096 |
|
|
{ |
1097 |
|
|
char combuf[512]; |
1098 |
greg |
2.3 |
char *argv[64]; |
1099 |
|
|
int rval; |
1100 |
|
|
register char **wp, *cp; |
1101 |
greg |
1.13 |
|
1102 |
schorsch |
2.34 |
if (PDesc.running) { |
1103 |
greg |
1.14 |
fprintf(stderr, "%s: too many calculations\n", progname); |
1104 |
|
|
exit(1); |
1105 |
|
|
} |
1106 |
greg |
2.3 |
strcpy(combuf, prog); |
1107 |
|
|
strcat(combuf, args); |
1108 |
|
|
cp = combuf; |
1109 |
|
|
wp = argv; |
1110 |
|
|
for ( ; ; ) { |
1111 |
greg |
2.11 |
while (isspace(*cp)) /* nullify spaces */ |
1112 |
|
|
*cp++ = '\0'; |
1113 |
|
|
if (!*cp) /* all done? */ |
1114 |
|
|
break; |
1115 |
|
|
*wp++ = cp; /* add argument to list */ |
1116 |
|
|
while (*++cp && !isspace(*cp)) |
1117 |
|
|
; |
1118 |
greg |
2.3 |
} |
1119 |
|
|
*wp = NULL; |
1120 |
|
|
/* start process */ |
1121 |
schorsch |
2.34 |
if ((rval = open_process(&PDesc, argv)) < 0) |
1122 |
greg |
2.10 |
syserror(progname); |
1123 |
greg |
2.3 |
if (rval == 0) { |
1124 |
|
|
fprintf(stderr, "%s: command not found\n", argv[0]); |
1125 |
|
|
exit(1); |
1126 |
greg |
1.13 |
} |
1127 |
greg |
2.3 |
packsiz = rval/(6*sizeof(float)) - 1; |
1128 |
|
|
if (packsiz > PACKSIZ) |
1129 |
|
|
packsiz = PACKSIZ; |
1130 |
greg |
1.13 |
queuesiz = 0; |
1131 |
|
|
} |
1132 |
|
|
|
1133 |
|
|
|
1134 |
greg |
2.3 |
caldone() /* done with calculation */ |
1135 |
greg |
1.13 |
{ |
1136 |
schorsch |
2.34 |
if (!PDesc.running) |
1137 |
greg |
1.14 |
return; |
1138 |
greg |
1.25 |
clearqueue(); |
1139 |
schorsch |
2.34 |
close_process(&PDesc); |
1140 |
greg |
1.13 |
} |
1141 |
|
|
|
1142 |
|
|
|
1143 |
greg |
1.14 |
rcalfill(x, y) /* fill with ray-calculated pixel */ |
1144 |
greg |
1.13 |
int x, y; |
1145 |
|
|
{ |
1146 |
greg |
2.3 |
if (queuesiz >= packsiz) /* flush queue if needed */ |
1147 |
greg |
1.25 |
clearqueue(); |
1148 |
greg |
1.22 |
/* add position to queue */ |
1149 |
greg |
1.13 |
queue[queuesiz][0] = x; |
1150 |
|
|
queue[queuesiz][1] = y; |
1151 |
|
|
queuesiz++; |
1152 |
|
|
} |
1153 |
|
|
|
1154 |
|
|
|
1155 |
greg |
1.25 |
clearqueue() /* process queue */ |
1156 |
greg |
1.13 |
{ |
1157 |
greg |
1.22 |
FVECT orig, dir; |
1158 |
greg |
2.3 |
float fbuf[6*(PACKSIZ+1)]; |
1159 |
|
|
register float *fbp; |
1160 |
greg |
1.13 |
register int i; |
1161 |
greg |
2.22 |
double vx, vy; |
1162 |
greg |
1.13 |
|
1163 |
greg |
2.10 |
if (queuesiz == 0) |
1164 |
|
|
return; |
1165 |
greg |
2.3 |
fbp = fbuf; |
1166 |
greg |
1.13 |
for (i = 0; i < queuesiz; i++) { |
1167 |
greg |
1.22 |
viewray(orig, dir, &ourview, |
1168 |
|
|
(queue[i][0]+.5)/hresolu, |
1169 |
|
|
(queue[i][1]+.5)/vresolu); |
1170 |
greg |
2.3 |
*fbp++ = orig[0]; *fbp++ = orig[1]; *fbp++ = orig[2]; |
1171 |
|
|
*fbp++ = dir[0]; *fbp++ = dir[1]; *fbp++ = dir[2]; |
1172 |
greg |
1.22 |
} |
1173 |
greg |
2.3 |
/* mark end and get results */ |
1174 |
schorsch |
2.35 |
memset((char *)fbp, '\0', 6*sizeof(float)); |
1175 |
schorsch |
2.34 |
if (process(&PDesc, (char *)fbuf, (char *)fbuf, |
1176 |
greg |
2.33 |
4*sizeof(float)*(queuesiz+1), |
1177 |
greg |
2.3 |
6*sizeof(float)*(queuesiz+1)) != |
1178 |
gregl |
2.29 |
4*sizeof(float)*(queuesiz+1)) { |
1179 |
greg |
2.3 |
fprintf(stderr, "%s: error reading from rtrace process\n", |
1180 |
|
|
progname); |
1181 |
|
|
exit(1); |
1182 |
|
|
} |
1183 |
|
|
fbp = fbuf; |
1184 |
greg |
1.22 |
for (i = 0; i < queuesiz; i++) { |
1185 |
greg |
1.16 |
if (ourexp > 0 && ourexp != 1.0) { |
1186 |
greg |
2.3 |
fbp[0] *= ourexp; |
1187 |
|
|
fbp[1] *= ourexp; |
1188 |
|
|
fbp[2] *= ourexp; |
1189 |
greg |
1.14 |
} |
1190 |
greg |
2.19 |
if (averaging) { |
1191 |
|
|
setcolor(sscan(queue[i][1])[queue[i][0]], |
1192 |
|
|
fbp[0], fbp[1], fbp[2]); |
1193 |
greg |
2.26 |
wscan(queue[i][1])[queue[i][0]] = 1; |
1194 |
greg |
2.19 |
} else |
1195 |
|
|
setcolr(pscan(queue[i][1])[queue[i][0]], |
1196 |
|
|
fbp[0], fbp[1], fbp[2]); |
1197 |
greg |
2.22 |
if (zisnorm) |
1198 |
|
|
zscan(queue[i][1])[queue[i][0]] = fbp[3]; |
1199 |
|
|
else { |
1200 |
|
|
vx = (queue[i][0]+.5)/hresolu + ourview.hoff - .5; |
1201 |
|
|
vy = (queue[i][1]+.5)/vresolu + ourview.voff - .5; |
1202 |
|
|
zscan(queue[i][1])[queue[i][0]] = fbp[3] / sqrt(1. + |
1203 |
|
|
vx*vx*ourview.hn2 + vy*vy*ourview.vn2); |
1204 |
|
|
} |
1205 |
greg |
2.3 |
fbp += 4; |
1206 |
greg |
1.13 |
} |
1207 |
|
|
queuesiz = 0; |
1208 |
greg |
1.14 |
} |
1209 |
|
|
|
1210 |
|
|
|
1211 |
greg |
2.10 |
syserror(s) /* report error and exit */ |
1212 |
|
|
char *s; |
1213 |
greg |
1.14 |
{ |
1214 |
greg |
2.10 |
perror(s); |
1215 |
greg |
1.14 |
exit(1); |
1216 |
greg |
1.1 |
} |