1 |
+ |
/* Copyright (c) 1994 Regents of the University of California */ |
2 |
+ |
|
3 |
|
#ifndef lint |
4 |
|
static char SCCSid[] = "$SunId$ LBL"; |
5 |
|
#endif |
12 |
|
|
13 |
|
#include "standard.h" |
14 |
|
|
15 |
+ |
#include <ctype.h> |
16 |
+ |
|
17 |
|
#include "view.h" |
18 |
|
|
19 |
|
#include "color.h" |
20 |
|
|
21 |
< |
#define pscan(y) (ourpict+(y)*ourview.hresolu) |
18 |
< |
#define zscan(y) (ourzbuf+(y)*ourview.hresolu) |
21 |
> |
#include "resolu.h" |
22 |
|
|
23 |
+ |
#define pscan(y) (ourpict+(y)*hresolu) |
24 |
+ |
#define sscan(y) (ourspict+(y)*hresolu) |
25 |
+ |
#define wscan(y) (ourweigh+(y)*hresolu) |
26 |
+ |
#define zscan(y) (ourzbuf+(y)*hresolu) |
27 |
+ |
#define averaging (ourweigh != NULL) |
28 |
+ |
|
29 |
+ |
#define MAXWT 1000. /* maximum pixel weight (averaging) */ |
30 |
+ |
|
31 |
+ |
#define F_FORE 1 /* fill foreground */ |
32 |
+ |
#define F_BACK 2 /* fill background */ |
33 |
+ |
|
34 |
+ |
#define PACKSIZ 256 /* max. calculation packet size */ |
35 |
+ |
|
36 |
+ |
#define RTCOM "rtrace -h- -ovl -fff " |
37 |
+ |
|
38 |
|
#define ABS(x) ((x)>0?(x):-(x)) |
39 |
|
|
40 |
< |
VIEW ourview = STDVIEW(512); /* desired view */ |
40 |
> |
struct position {int x,y; float z;}; |
41 |
|
|
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 |
+ |
VIEW ourview = STDVIEW; /* desired view */ |
48 |
+ |
int hresolu = 512; /* horizontal resolution */ |
49 |
+ |
int vresolu = 512; /* vertical resolution */ |
50 |
+ |
double pixaspect = 1.0; /* pixel aspect ratio */ |
51 |
+ |
|
52 |
|
double zeps = .02; /* allowed z epsilon */ |
53 |
|
|
54 |
< |
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 |
|
float *ourzbuf; /* corresponding z-buffer */ |
58 |
|
|
59 |
|
char *progname; |
60 |
|
|
61 |
< |
VIEW theirview = STDVIEW(512); /* input view */ |
61 |
> |
int fillo = F_FORE|F_BACK; /* selected fill options */ |
62 |
> |
int fillsamp = 0; /* sample separation (0 == inf) */ |
63 |
> |
extern int backfill(), rcalfill(); /* fill functions */ |
64 |
> |
int (*fillfunc)() = backfill; /* selected fill function */ |
65 |
> |
COLR backcolr = BLKCOLR; /* background color */ |
66 |
> |
COLOR backcolor = BLKCOLOR; /* background color (float) */ |
67 |
> |
double backz = 0.0; /* background z value */ |
68 |
> |
int normdist = 1; /* normalized distance? */ |
69 |
> |
double ourexp = -1; /* output picture exposure */ |
70 |
> |
|
71 |
> |
VIEW theirview = STDVIEW; /* input view */ |
72 |
|
int gotview; /* got input view? */ |
73 |
+ |
int wrongformat = 0; /* input in another format? */ |
74 |
+ |
RESOLU tresolu; /* input resolution */ |
75 |
+ |
double theirexp; /* input picture exposure */ |
76 |
+ |
MAT4 theirs2ours; /* transformation matrix */ |
77 |
+ |
int hasmatrix = 0; /* has transformation matrix */ |
78 |
|
|
79 |
< |
double theirs2ours[4][4]; /* transformation matrix */ |
79 |
> |
int PDesc[3] = {-1,-1,-1}; /* rtrace process descriptor */ |
80 |
> |
#define childpid (PDesc[2]) |
81 |
> |
unsigned short queue[PACKSIZ][2]; /* pending pixels */ |
82 |
> |
int packsiz; /* actual packet size */ |
83 |
> |
int queuesiz; /* number of pixels pending */ |
84 |
|
|
85 |
+ |
extern double movepixel(); |
86 |
|
|
87 |
+ |
|
88 |
|
main(argc, argv) /* interpolate pictures */ |
89 |
|
int argc; |
90 |
|
char *argv[]; |
91 |
|
{ |
92 |
< |
#define check(olen,narg) if (argv[i][olen] || narg >= argc-i) goto badopt |
92 |
> |
#define check(ol,al) if (argv[i][ol] || \ |
93 |
> |
badarg(argc-i-1,argv+i+1,al)) \ |
94 |
> |
goto badopt |
95 |
|
int gotvfile = 0; |
96 |
+ |
int doavg = -1; |
97 |
+ |
char *zfile = NULL; |
98 |
|
char *err; |
99 |
< |
int i; |
99 |
> |
int i, rval; |
100 |
|
|
101 |
|
progname = argv[0]; |
102 |
|
|
103 |
< |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
103 |
> |
for (i = 1; i < argc && argv[i][0] == '-'; i++) { |
104 |
> |
rval = getviewopt(&ourview, argc-i, argv+i); |
105 |
> |
if (rval >= 0) { |
106 |
> |
i += rval; |
107 |
> |
continue; |
108 |
> |
} |
109 |
|
switch (argv[i][1]) { |
110 |
|
case 't': /* threshold */ |
111 |
< |
check(2,1); |
111 |
> |
check(2,"f"); |
112 |
|
zeps = atof(argv[++i]); |
113 |
|
break; |
114 |
< |
case 'x': /* x resolution */ |
115 |
< |
check(2,1); |
116 |
< |
ourview.hresolu = atoi(argv[++i]); |
114 |
> |
case 'a': /* average */ |
115 |
> |
check(2,NULL); |
116 |
> |
doavg = 1; |
117 |
|
break; |
118 |
< |
case 'y': /* y resolution */ |
119 |
< |
check(2,1); |
120 |
< |
ourview.vresolu = atoi(argv[++i]); |
118 |
> |
case 'q': /* quick (no avg.) */ |
119 |
> |
check(2,NULL); |
120 |
> |
doavg = 0; |
121 |
|
break; |
122 |
< |
case 'v': /* view */ |
122 |
> |
case 'n': /* dist. normalized? */ |
123 |
> |
check(2,NULL); |
124 |
> |
normdist = !normdist; |
125 |
> |
break; |
126 |
> |
case 'f': /* fill type */ |
127 |
|
switch (argv[i][2]) { |
128 |
< |
case 't': /* type */ |
129 |
< |
check(4,0); |
130 |
< |
ourview.type = argv[i][3]; |
128 |
> |
case '0': /* none */ |
129 |
> |
check(3,NULL); |
130 |
> |
fillo = 0; |
131 |
|
break; |
132 |
< |
case 'p': /* point */ |
133 |
< |
check(3,3); |
134 |
< |
ourview.vp[0] = atof(argv[++i]); |
71 |
< |
ourview.vp[1] = atof(argv[++i]); |
72 |
< |
ourview.vp[2] = atof(argv[++i]); |
132 |
> |
case 'f': /* foreground */ |
133 |
> |
check(3,NULL); |
134 |
> |
fillo = F_FORE; |
135 |
|
break; |
136 |
< |
case 'd': /* direction */ |
137 |
< |
check(3,3); |
138 |
< |
ourview.vdir[0] = atof(argv[++i]); |
77 |
< |
ourview.vdir[1] = atof(argv[++i]); |
78 |
< |
ourview.vdir[2] = atof(argv[++i]); |
136 |
> |
case 'b': /* background */ |
137 |
> |
check(3,NULL); |
138 |
> |
fillo = F_BACK; |
139 |
|
break; |
140 |
< |
case 'u': /* up */ |
141 |
< |
check(3,3); |
142 |
< |
ourview.vup[0] = atof(argv[++i]); |
83 |
< |
ourview.vup[1] = atof(argv[++i]); |
84 |
< |
ourview.vup[2] = atof(argv[++i]); |
140 |
> |
case 'a': /* all */ |
141 |
> |
check(3,NULL); |
142 |
> |
fillo = F_FORE|F_BACK; |
143 |
|
break; |
144 |
< |
case 'h': /* horizontal */ |
145 |
< |
check(3,1); |
146 |
< |
ourview.horiz = atof(argv[++i]); |
144 |
> |
case 's': /* sample */ |
145 |
> |
check(3,"i"); |
146 |
> |
fillsamp = atoi(argv[++i]); |
147 |
|
break; |
148 |
< |
case 'v': /* vertical */ |
149 |
< |
check(3,1); |
150 |
< |
ourview.vert = atof(argv[++i]); |
148 |
> |
case 'c': /* color */ |
149 |
> |
check(3,"fff"); |
150 |
> |
fillfunc = backfill; |
151 |
> |
setcolor(backcolor, atof(argv[i+1]), |
152 |
> |
atof(argv[i+2]), atof(argv[i+3])); |
153 |
> |
setcolr(backcolr, colval(backcolor,RED), |
154 |
> |
colval(backcolor,GRN), |
155 |
> |
colval(backcolor,BLU)); |
156 |
> |
i += 3; |
157 |
|
break; |
158 |
< |
case 'f': /* file */ |
159 |
< |
check(3,1); |
160 |
< |
gotvfile = viewfile(argv[++i], &ourview); |
161 |
< |
if (gotvfile < 0) { |
98 |
< |
perror(argv[i]); |
99 |
< |
exit(1); |
100 |
< |
} else if (gotvfile == 0) { |
101 |
< |
fprintf(stderr, "%s: bad view file\n", |
102 |
< |
argv[i]); |
103 |
< |
exit(1); |
104 |
< |
} |
158 |
> |
case 'z': /* z value */ |
159 |
> |
check(3,"f"); |
160 |
> |
fillfunc = backfill; |
161 |
> |
backz = atof(argv[++i]); |
162 |
|
break; |
163 |
+ |
case 'r': /* rtrace */ |
164 |
+ |
check(3,"s"); |
165 |
+ |
fillfunc = rcalfill; |
166 |
+ |
calstart(RTCOM, argv[++i]); |
167 |
+ |
break; |
168 |
|
default: |
169 |
|
goto badopt; |
170 |
|
} |
171 |
|
break; |
172 |
+ |
case 'z': /* z file */ |
173 |
+ |
check(2,"s"); |
174 |
+ |
zfile = argv[++i]; |
175 |
+ |
break; |
176 |
+ |
case 'x': /* x resolution */ |
177 |
+ |
check(2,"i"); |
178 |
+ |
hresolu = atoi(argv[++i]); |
179 |
+ |
break; |
180 |
+ |
case 'y': /* y resolution */ |
181 |
+ |
check(2,"i"); |
182 |
+ |
vresolu = atoi(argv[++i]); |
183 |
+ |
break; |
184 |
+ |
case 'p': /* pixel aspect */ |
185 |
+ |
if (argv[i][2] != 'a') |
186 |
+ |
goto badopt; |
187 |
+ |
check(3,"f"); |
188 |
+ |
pixaspect = atof(argv[++i]); |
189 |
+ |
break; |
190 |
+ |
case 'v': /* view file */ |
191 |
+ |
if (argv[i][2] != 'f') |
192 |
+ |
goto badopt; |
193 |
+ |
check(3,"s"); |
194 |
+ |
gotvfile = viewfile(argv[++i], &ourview, 0, 0); |
195 |
+ |
if (gotvfile < 0) |
196 |
+ |
syserror(argv[i]); |
197 |
+ |
else if (gotvfile == 0) { |
198 |
+ |
fprintf(stderr, "%s: bad view file\n", |
199 |
+ |
argv[i]); |
200 |
+ |
exit(1); |
201 |
+ |
} |
202 |
+ |
break; |
203 |
|
default: |
204 |
|
badopt: |
205 |
< |
fprintf(stderr, "%s: unknown option '%s'\n", |
205 |
> |
fprintf(stderr, "%s: command line error at '%s'\n", |
206 |
|
progname, argv[i]); |
207 |
< |
exit(1); |
207 |
> |
goto userr; |
208 |
|
} |
116 |
– |
/* check arguments */ |
117 |
– |
if (argc-i < 2 || (argc-i)%2) { |
118 |
– |
fprintf(stderr, "Usage: %s [view args] pfile zfile ..\n", |
119 |
– |
progname); |
120 |
– |
exit(1); |
209 |
|
} |
210 |
+ |
/* check arguments */ |
211 |
+ |
if ((argc-i)%2) |
212 |
+ |
goto userr; |
213 |
+ |
if (fillsamp == 1) |
214 |
+ |
fillo &= ~F_BACK; |
215 |
+ |
if (doavg < 0) |
216 |
+ |
doavg = (argc-i) > 2; |
217 |
|
/* set view */ |
218 |
< |
if (err = setview(&ourview)) { |
218 |
> |
if ((err = setview(&ourview)) != NULL) { |
219 |
|
fprintf(stderr, "%s: %s\n", progname, err); |
220 |
|
exit(1); |
221 |
|
} |
222 |
+ |
normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu); |
223 |
|
/* allocate frame */ |
224 |
< |
ourpict = (COLR *)calloc(ourview.hresolu*ourview.vresolu,sizeof(COLR)); |
225 |
< |
ourzbuf = (float *)calloc(ourview.hresolu*ourview.vresolu,sizeof(float)); |
226 |
< |
if (ourpict == NULL || ourzbuf == NULL) { |
227 |
< |
perror(progname); |
228 |
< |
exit(1); |
224 |
> |
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 |
> |
} else { |
230 |
> |
ourpict = (COLR *)bmalloc(hresolu*vresolu*sizeof(COLR)); |
231 |
> |
if (ourpict == NULL) |
232 |
> |
syserror(progname); |
233 |
|
} |
234 |
+ |
ourzbuf = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
235 |
+ |
if (ourzbuf == NULL) |
236 |
+ |
syserror(progname); |
237 |
+ |
bzero((char *)ourzbuf, hresolu*vresolu*sizeof(float)); |
238 |
+ |
/* new header */ |
239 |
+ |
newheader("RADIANCE", stdout); |
240 |
|
/* get input */ |
241 |
|
for ( ; i < argc; i += 2) |
242 |
|
addpicture(argv[i], argv[i+1]); |
243 |
|
/* fill in spaces */ |
244 |
< |
fillpicture(); |
244 |
> |
if (fillo&F_BACK) |
245 |
> |
backpicture(fillfunc, fillsamp); |
246 |
> |
else |
247 |
> |
fillpicture(fillfunc); |
248 |
> |
/* close calculation */ |
249 |
> |
caldone(); |
250 |
> |
/* aft clipping */ |
251 |
> |
clipaft(); |
252 |
|
/* add to header */ |
253 |
|
printargs(argc, argv, stdout); |
254 |
|
if (gotvfile) { |
255 |
< |
printf(VIEWSTR); |
255 |
> |
fputs(VIEWSTR, stdout); |
256 |
|
fprintview(&ourview, stdout); |
257 |
< |
printf("\n"); |
257 |
> |
putc('\n', stdout); |
258 |
|
} |
259 |
< |
printf("\n"); |
260 |
< |
/* write output */ |
259 |
> |
if (pixaspect < .99 || pixaspect > 1.01) |
260 |
> |
fputaspect(pixaspect, stdout); |
261 |
> |
if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
262 |
> |
fputexpos(ourexp, stdout); |
263 |
> |
fputformat(COLRFMT, stdout); |
264 |
> |
putc('\n', stdout); |
265 |
> |
/* write picture */ |
266 |
|
writepicture(); |
267 |
+ |
/* write z file */ |
268 |
+ |
if (zfile != NULL) |
269 |
+ |
writedistance(zfile); |
270 |
|
|
271 |
|
exit(0); |
272 |
+ |
userr: |
273 |
+ |
fprintf(stderr, |
274 |
+ |
"Usage: %s [view opts][-t eps][-z zout][-fT][-n] pfile zspec ..\n", |
275 |
+ |
progname); |
276 |
+ |
exit(1); |
277 |
|
#undef check |
278 |
|
} |
279 |
|
|
281 |
|
headline(s) /* process header string */ |
282 |
|
char *s; |
283 |
|
{ |
284 |
< |
static char *altname[] = {"rview","rpict","pinterp",VIEWSTR,NULL}; |
159 |
< |
register char **an; |
284 |
> |
char fmt[32]; |
285 |
|
|
286 |
< |
printf("\t%s", s); |
286 |
> |
if (isheadid(s)) |
287 |
> |
return; |
288 |
> |
if (formatval(fmt, s)) { |
289 |
> |
wrongformat = strcmp(fmt, COLRFMT); |
290 |
> |
return; |
291 |
> |
} |
292 |
> |
putc('\t', stdout); |
293 |
> |
fputs(s, stdout); |
294 |
|
|
295 |
< |
for (an = altname; *an != NULL; an++) |
296 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
297 |
< |
if (sscanview(&theirview, s+strlen(*an)) == 0) |
298 |
< |
gotview++; |
299 |
< |
break; |
300 |
< |
} |
295 |
> |
if (isexpos(s)) { |
296 |
> |
theirexp *= exposval(s); |
297 |
> |
return; |
298 |
> |
} |
299 |
> |
if (isview(s) && sscanview(&theirview, s) > 0) |
300 |
> |
gotview++; |
301 |
|
} |
302 |
|
|
303 |
|
|
304 |
< |
addpicture(pfile, zfile) /* add picture to output */ |
305 |
< |
char *pfile, *zfile; |
304 |
> |
addpicture(pfile, zspec) /* add picture to output */ |
305 |
> |
char *pfile, *zspec; |
306 |
|
{ |
307 |
< |
FILE *pfp, *zfp; |
307 |
> |
FILE *pfp; |
308 |
> |
int zfd; |
309 |
|
char *err; |
310 |
|
COLR *scanin; |
311 |
< |
float *zin, *zlast; |
312 |
< |
int *plast; |
311 |
> |
float *zin; |
312 |
> |
struct position *plast; |
313 |
> |
struct bound *xlim, ylim; |
314 |
|
int y; |
315 |
< |
/* open input files */ |
316 |
< |
if ((pfp = fopen(pfile, "r")) == NULL) { |
317 |
< |
perror(pfile); |
318 |
< |
exit(1); |
319 |
< |
} |
186 |
< |
if ((zfp = fopen(zfile, "r")) == NULL) { |
187 |
< |
perror(zfile); |
188 |
< |
exit(1); |
189 |
< |
} |
190 |
< |
/* get header and view */ |
191 |
< |
printf("%s:\n", pfile); |
315 |
> |
/* open picture file */ |
316 |
> |
if ((pfp = fopen(pfile, "r")) == NULL) |
317 |
> |
syserror(pfile); |
318 |
> |
/* get header with exposure and view */ |
319 |
> |
theirexp = 1.0; |
320 |
|
gotview = 0; |
321 |
< |
getheader(pfp, headline); |
322 |
< |
if (!gotview || fgetresolu(&theirview.hresolu, &theirview.vresolu, pfp) |
323 |
< |
!= (YMAJOR|YDECR)) { |
324 |
< |
fprintf(stderr, "%s: picture view error\n", pfile); |
321 |
> |
printf("%s:\n", pfile); |
322 |
> |
getheader(pfp, headline, NULL); |
323 |
> |
if (wrongformat || !gotview || !fgetsresolu(&tresolu, pfp)) { |
324 |
> |
fprintf(stderr, "%s: picture format error\n", pfile); |
325 |
|
exit(1); |
326 |
|
} |
327 |
+ |
if (ourexp <= 0) |
328 |
+ |
ourexp = theirexp; |
329 |
+ |
else if (ABS(theirexp-ourexp) > .01*ourexp) |
330 |
+ |
fprintf(stderr, "%s: different exposure (warning)\n", pfile); |
331 |
|
if (err = setview(&theirview)) { |
332 |
|
fprintf(stderr, "%s: %s\n", pfile, err); |
333 |
|
exit(1); |
334 |
|
} |
335 |
|
/* compute transformation */ |
336 |
< |
pixform(theirs2ours, &theirview, &ourview); |
337 |
< |
/* allocate scanlines */ |
338 |
< |
scanin = (COLR *)malloc(theirview.hresolu*sizeof(COLR)); |
339 |
< |
zin = (float *)malloc(theirview.hresolu*sizeof(float)); |
340 |
< |
zlast = (float *)calloc(theirview.hresolu, sizeof(float)); |
341 |
< |
plast = (int *)calloc(theirview.hresolu, sizeof(int)); |
342 |
< |
if (scanin == NULL || zin == NULL || zlast == NULL || plast == NULL) { |
343 |
< |
perror(progname); |
344 |
< |
exit(1); |
336 |
> |
hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
337 |
> |
/* get z specification or file */ |
338 |
> |
zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
339 |
> |
if (zin == NULL) |
340 |
> |
syserror(progname); |
341 |
> |
if ((zfd = open(zspec, O_RDONLY)) == -1) { |
342 |
> |
double zvalue; |
343 |
> |
register int x; |
344 |
> |
if (!isflt(zspec) || (zvalue = atof(zspec)) <= 0.0) |
345 |
> |
syserror(zspec); |
346 |
> |
for (x = scanlen(&tresolu); x-- > 0; ) |
347 |
> |
zin[x] = zvalue; |
348 |
|
} |
349 |
< |
/* load image */ |
350 |
< |
for (y = theirview.vresolu-1; y >= 0; y--) { |
351 |
< |
if (freadcolrs(scanin, theirview.hresolu, pfp) < 0) { |
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 |
> |
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
370 |
|
fprintf(stderr, "%s: read error\n", pfile); |
371 |
|
exit(1); |
372 |
|
} |
373 |
< |
if (fread(zin, sizeof(float), theirview.hresolu, zfp) |
374 |
< |
< theirview.hresolu) { |
375 |
< |
fprintf(stderr, "%s: read error\n", zfile); |
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 |
|
exit(1); |
381 |
|
} |
382 |
< |
addscanline(y, scanin, zin, plast, zlast); |
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 |
|
free((char *)scanin); |
391 |
|
free((char *)zin); |
392 |
|
free((char *)plast); |
231 |
– |
free((char *)zlast); |
393 |
|
fclose(pfp); |
394 |
< |
fclose(zfp); |
394 |
> |
if (zfd != -1) |
395 |
> |
close(zfd); |
396 |
|
} |
397 |
|
|
398 |
|
|
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]; |
404 |
|
|
405 |
+ |
if (vw1->type != VT_PER && vw1->type != VT_PAR) |
406 |
+ |
return(0); |
407 |
+ |
if (vw2->type != VT_PER && vw2->type != VT_PAR) |
408 |
+ |
return(0); |
409 |
|
setident4(xfmat); |
410 |
< |
xfmat[0][0] = vw1->vhinc[0]; |
411 |
< |
xfmat[0][1] = vw1->vhinc[1]; |
412 |
< |
xfmat[0][2] = vw1->vhinc[2]; |
413 |
< |
xfmat[1][0] = vw1->vvinc[0]; |
414 |
< |
xfmat[1][1] = vw1->vvinc[1]; |
415 |
< |
xfmat[1][2] = vw1->vvinc[2]; |
410 |
> |
xfmat[0][0] = vw1->hvec[0]; |
411 |
> |
xfmat[0][1] = vw1->hvec[1]; |
412 |
> |
xfmat[0][2] = vw1->hvec[2]; |
413 |
> |
xfmat[1][0] = vw1->vvec[0]; |
414 |
> |
xfmat[1][1] = vw1->vvec[1]; |
415 |
> |
xfmat[1][2] = vw1->vvec[2]; |
416 |
|
xfmat[2][0] = vw1->vdir[0]; |
417 |
|
xfmat[2][1] = vw1->vdir[1]; |
418 |
|
xfmat[2][2] = vw1->vdir[2]; |
420 |
|
xfmat[3][1] = vw1->vp[1]; |
421 |
|
xfmat[3][2] = vw1->vp[2]; |
422 |
|
setident4(m4t); |
423 |
< |
m4t[0][0] = vw2->vhinc[0]/vw2->vhn2; |
424 |
< |
m4t[1][0] = vw2->vhinc[1]/vw2->vhn2; |
425 |
< |
m4t[2][0] = vw2->vhinc[2]/vw2->vhn2; |
426 |
< |
m4t[3][0] = -DOT(vw2->vp,vw2->vhinc)/vw2->vhn2; |
427 |
< |
m4t[0][1] = vw2->vvinc[0]/vw2->vvn2; |
428 |
< |
m4t[1][1] = vw2->vvinc[1]/vw2->vvn2; |
429 |
< |
m4t[2][1] = vw2->vvinc[2]/vw2->vvn2; |
430 |
< |
m4t[3][1] = -DOT(vw2->vp,vw2->vvinc)/vw2->vvn2; |
423 |
> |
m4t[0][0] = vw2->hvec[0]/vw2->hn2; |
424 |
> |
m4t[1][0] = vw2->hvec[1]/vw2->hn2; |
425 |
> |
m4t[2][0] = vw2->hvec[2]/vw2->hn2; |
426 |
> |
m4t[3][0] = -DOT(vw2->vp,vw2->hvec)/vw2->hn2; |
427 |
> |
m4t[0][1] = vw2->vvec[0]/vw2->vn2; |
428 |
> |
m4t[1][1] = vw2->vvec[1]/vw2->vn2; |
429 |
> |
m4t[2][1] = vw2->vvec[2]/vw2->vn2; |
430 |
> |
m4t[3][1] = -DOT(vw2->vp,vw2->vvec)/vw2->vn2; |
431 |
|
m4t[0][2] = vw2->vdir[0]; |
432 |
|
m4t[1][2] = vw2->vdir[1]; |
433 |
|
m4t[2][2] = vw2->vdir[2]; |
434 |
|
m4t[3][2] = -DOT(vw2->vp,vw2->vdir); |
435 |
|
multmat4(xfmat, xfmat, m4t); |
436 |
+ |
return(1); |
437 |
|
} |
438 |
|
|
439 |
|
|
440 |
< |
addscanline(y, pline, zline, lasty, lastyz) /* 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; |
445 |
< |
int *lasty; /* input/output */ |
278 |
< |
float *lastyz; /* input/output */ |
445 |
> |
struct position *lasty; /* input/output */ |
446 |
|
{ |
447 |
< |
extern double sqrt(), fabs(); |
448 |
< |
double pos[3]; |
449 |
< |
int lastx = 0; |
283 |
< |
double lastxz = 0; |
284 |
< |
double zt; |
285 |
< |
int xpos, ypos; |
447 |
> |
FVECT pos; |
448 |
> |
struct position lastx, newpos; |
449 |
> |
double wt; |
450 |
|
register int x; |
451 |
|
|
452 |
< |
for (x = theirview.hresolu-1; x >= 0; x--) { |
453 |
< |
pos[0] = x - .5*(theirview.hresolu-1); |
454 |
< |
pos[1] = y - .5*(theirview.vresolu-1); |
452 |
> |
lastx.z = 0; |
453 |
> |
for (x = xl->max; x >= xl->min; x--) { |
454 |
> |
pix2loc(pos, &tresolu, x, y); |
455 |
|
pos[2] = zline[x]; |
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 |
+ |
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, 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? */ |
483 |
+ |
int x1, y1; /* p1 position */ |
484 |
+ |
register int x, y; /* final position */ |
485 |
+ |
|
486 |
+ |
/* compute vector p0p1 */ |
487 |
+ |
if (fillo&F_FORE && ABS(p1->z-p0->z) <= zt) { |
488 |
+ |
s1x = p1->x - p0->x; |
489 |
+ |
s1y = p1->y - p0->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; |
498 |
+ |
} |
499 |
+ |
/* compute vector p0p2 */ |
500 |
+ |
if (fillo&F_FORE && ABS(p2->z-p0->z) <= zt) { |
501 |
+ |
s2x = p2->x - p0->x; |
502 |
+ |
s2y = p2->y - p0->y; |
503 |
+ |
if (p1isy == 1) |
504 |
+ |
l2 = ABS(s2x); |
505 |
+ |
else { |
506 |
+ |
l2 = ABS(s2y); |
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; |
522 |
+ |
for (c2 = l2; c2-- > 0; ) { |
523 |
+ |
x = x1 + c2*s2x/l2; |
524 |
+ |
if (x < 0 || x >= hresolu) |
525 |
+ |
continue; |
526 |
+ |
y = y1 + c2*s2y/l2; |
527 |
+ |
if (y < 0 || y >= vresolu) |
528 |
+ |
continue; |
529 |
+ |
if (averaging) { |
530 |
+ |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
531 |
+ |
> zeps*zscan(y)[x]) { |
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 |
+ |
register FVECT pos; |
552 |
+ |
{ |
553 |
+ |
FVECT pt, tdir, odir; |
554 |
+ |
double d; |
555 |
+ |
register int i; |
556 |
+ |
|
557 |
+ |
if (pos[2] <= 0) /* empty pixel */ |
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 |
< |
/* |
564 |
< |
* The following (single) statement can go |
565 |
< |
* if z is along the view direction rather |
296 |
< |
* than an eye ray. |
297 |
< |
*/ |
298 |
< |
pos[2] /= sqrt( 1. |
299 |
< |
+ pos[0]*pos[0]*theirview.vhn2 |
300 |
< |
+ pos[1]*pos[1]*theirview.vvn2 ); |
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 |
< |
continue; |
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.hresolu; |
577 |
< |
pos[1] += .5*ourview.vresolu; |
578 |
< |
if (pos[0] < 0 || (xpos = pos[0]) >= ourview.hresolu |
579 |
< |
|| pos[1] < 0 || (ypos = pos[1]) >= ourview.vresolu) |
580 |
< |
continue; |
581 |
< |
/* add pixel to our image */ |
582 |
< |
zt = 2.*zeps*zline[x]; |
583 |
< |
addpixel(xpos, ypos, |
584 |
< |
(fabs(zline[x]-lastxz) <= zt) ? lastx - xpos : 1, |
585 |
< |
(fabs(zline[x]-lastyz[x]) <= zt) ? lasty[x] - ypos : 1, |
586 |
< |
pline[x], pos[2]); |
587 |
< |
lastx = xpos; |
588 |
< |
lasty[x] = ypos; |
589 |
< |
lastxz = lastyz[x] = zline[x]; |
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 |
< |
addpixel(xstart, ystart, width, height, pix, z) /* fill in area for pixel */ |
608 |
< |
int xstart, ystart; |
609 |
< |
int width, height; |
610 |
< |
COLR pix; |
611 |
< |
double z; |
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 |
< |
/* make width and height positive */ |
617 |
< |
if (width < 0) { |
618 |
< |
width = -width; |
619 |
< |
xstart = xstart-width+1; |
620 |
< |
} else if (width == 0) |
621 |
< |
width = 1; |
622 |
< |
if (height < 0) { |
623 |
< |
height = -height; |
624 |
< |
ystart = ystart-height+1; |
625 |
< |
} else if (height == 0) |
626 |
< |
height = 1; |
627 |
< |
/* fill pixel(s) within rectangle */ |
628 |
< |
for (y = ystart; y < ystart+height; y++) |
629 |
< |
for (x = xstart; x < xstart+width; x++) |
630 |
< |
if (zscan(y)[x] <= 0 |
631 |
< |
|| zscan(y)[x]-z > zeps*zscan(y)[x]) { |
632 |
< |
zscan(y)[x] = z; |
633 |
< |
copycolr(pscan(y)[x], pix); |
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 |
> |
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 |
|
|
691 |
< |
fillpicture() /* fill in empty spaces */ |
691 |
> |
backpicture(fill, samp) /* background fill algorithm */ |
692 |
> |
int (*fill)(); |
693 |
> |
int samp; |
694 |
|
{ |
695 |
|
int *yback, xback; |
696 |
|
int y; |
362 |
– |
COLR pfill; |
697 |
|
register int x, i; |
698 |
|
/* get back buffer */ |
699 |
< |
yback = (int *)malloc(ourview.hresolu*sizeof(int)); |
700 |
< |
if (yback == NULL) { |
701 |
< |
perror(progname); |
702 |
< |
return; |
369 |
< |
} |
370 |
< |
for (x = 0; x < ourview.hresolu; x++) |
699 |
> |
yback = (int *)malloc(hresolu*sizeof(int)); |
700 |
> |
if (yback == NULL) |
701 |
> |
syserror(progname); |
702 |
> |
for (x = 0; x < hresolu; x++) |
703 |
|
yback[x] = -2; |
704 |
|
/* |
705 |
|
* Xback and yback are the pixel locations of suitable |
708 |
|
* that there is no suitable background in this direction. |
709 |
|
*/ |
710 |
|
/* fill image */ |
711 |
< |
for (y = 0; y < ourview.vresolu; y++) { |
711 |
> |
for (y = 0; y < vresolu; y++) { |
712 |
|
xback = -2; |
713 |
< |
for (x = 0; x < ourview.hresolu; x++) |
713 |
> |
for (x = 0; x < hresolu; x++) |
714 |
|
if (zscan(y)[x] <= 0) { /* empty pixel */ |
715 |
|
/* |
716 |
|
* First, find background from above or below. |
717 |
|
* (farthest assigned pixel) |
718 |
|
*/ |
719 |
|
if (yback[x] == -2) { |
720 |
< |
for (i = y+1; i < ourview.vresolu; i++) |
720 |
> |
for (i = y+1; i < vresolu; i++) |
721 |
|
if (zscan(i)[x] > 0) |
722 |
|
break; |
723 |
< |
if (i < ourview.vresolu |
723 |
> |
if (i < vresolu |
724 |
|
&& (y <= 0 || zscan(y-1)[x] < zscan(i)[x])) |
725 |
|
yback[x] = i; |
726 |
|
else |
730 |
|
* Next, find background from left or right. |
731 |
|
*/ |
732 |
|
if (xback == -2) { |
733 |
< |
for (i = x+1; x < ourview.hresolu; i++) |
733 |
> |
for (i = x+1; i < hresolu; i++) |
734 |
|
if (zscan(y)[i] > 0) |
735 |
|
break; |
736 |
< |
if (i < ourview.hresolu |
736 |
> |
if (i < hresolu |
737 |
|
&& (x <= 0 || zscan(y)[x-1] < zscan(y)[i])) |
738 |
|
xback = i; |
739 |
|
else |
740 |
|
xback = x-1; |
741 |
|
} |
742 |
+ |
/* |
743 |
+ |
* If we have no background for this pixel, |
744 |
+ |
* use the given fill function. |
745 |
+ |
*/ |
746 |
|
if (xback < 0 && yback[x] < 0) |
747 |
< |
continue; /* no background */ |
747 |
> |
goto fillit; |
748 |
|
/* |
749 |
|
* Compare, and use the background that is |
750 |
|
* farther, unless one of them is next to us. |
751 |
+ |
* If the background is too distant, call |
752 |
+ |
* the fill function. |
753 |
|
*/ |
754 |
< |
if (yback[x] < 0 || ABS(x-xback) <= 1 |
754 |
> |
if ( yback[x] < 0 |
755 |
> |
|| (xback >= 0 && ABS(x-xback) <= 1) |
756 |
|
|| ( ABS(y-yback[x]) > 1 |
757 |
< |
&& zscan(yback[x])[x] < zscan(y)[xback] )) |
758 |
< |
copycolr(pscan(y)[x],pscan(y)[xback]); |
759 |
< |
else |
760 |
< |
copycolr(pscan(y)[x],pscan(yback[x])[x]); |
757 |
> |
&& zscan(yback[x])[x] |
758 |
> |
< zscan(y)[xback] ) ) { |
759 |
> |
if (samp > 0 && ABS(x-xback) >= samp) |
760 |
> |
goto fillit; |
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 |
> |
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; |
783 |
> |
fillit: |
784 |
> |
(*fill)(x,y); |
785 |
> |
if (fill == rcalfill) { /* use it */ |
786 |
> |
clearqueue(); |
787 |
> |
xback = x; |
788 |
> |
yback[x] = y; |
789 |
> |
} |
790 |
|
} else { /* full pixel */ |
791 |
|
yback[x] = -2; |
792 |
|
xback = -2; |
796 |
|
} |
797 |
|
|
798 |
|
|
799 |
+ |
fillpicture(fill) /* paint in empty pixels using fill */ |
800 |
+ |
int (*fill)(); |
801 |
+ |
{ |
802 |
+ |
register int x, y; |
803 |
+ |
|
804 |
+ |
for (y = 0; y < vresolu; y++) |
805 |
+ |
for (x = 0; x < hresolu; x++) |
806 |
+ |
if (zscan(y)[x] <= 0) |
807 |
+ |
(*fill)(x,y); |
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 |
< |
fputresolu(YMAJOR|YDECR, ourview.hresolu, ourview.vresolu, stdout); |
852 |
< |
for (y = ourview.vresolu-1; y >= 0; y--) |
853 |
< |
if (fwritecolrs(pscan(y), ourview.hresolu, stdout) < 0) { |
854 |
< |
perror(progname); |
855 |
< |
exit(1); |
851 |
> |
fprtresolu(hresolu, vresolu, stdout); |
852 |
> |
for (y = vresolu-1; y >= 0; y--) |
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 |
> |
|
865 |
> |
|
866 |
> |
writedistance(fname) /* write out z file */ |
867 |
> |
char *fname; |
868 |
> |
{ |
869 |
> |
int donorm = normdist && ourview.type == VT_PER; |
870 |
> |
int fd; |
871 |
> |
int y; |
872 |
> |
float *zout; |
873 |
> |
|
874 |
> |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) |
875 |
> |
syserror(fname); |
876 |
> |
if (donorm |
877 |
> |
&& (zout = (float *)malloc(hresolu*sizeof(float))) == NULL) |
878 |
> |
syserror(progname); |
879 |
> |
for (y = vresolu-1; y >= 0; y--) { |
880 |
> |
if (donorm) { |
881 |
> |
double vx, yzn2; |
882 |
> |
register int x; |
883 |
> |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
884 |
> |
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
885 |
> |
for (x = 0; x < hresolu; x++) { |
886 |
> |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
887 |
> |
zout[x] = zscan(y)[x] |
888 |
> |
* sqrt(vx*vx*ourview.hn2 + yzn2); |
889 |
> |
} |
890 |
> |
} else |
891 |
> |
zout = zscan(y); |
892 |
> |
if (write(fd, (char *)zout, hresolu*sizeof(float)) |
893 |
> |
< hresolu*sizeof(float)) |
894 |
> |
syserror(fname); |
895 |
> |
} |
896 |
> |
if (donorm) |
897 |
> |
free((char *)zout); |
898 |
> |
close(fd); |
899 |
> |
} |
900 |
> |
|
901 |
> |
|
902 |
> |
backfill(x, y) /* fill pixel with background */ |
903 |
> |
int x, y; |
904 |
> |
{ |
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 |
> |
|
913 |
> |
|
914 |
> |
calstart(prog, args) /* start fill calculation */ |
915 |
> |
char *prog, *args; |
916 |
> |
{ |
917 |
> |
char combuf[512]; |
918 |
> |
char *argv[64]; |
919 |
> |
int rval; |
920 |
> |
register char **wp, *cp; |
921 |
> |
|
922 |
> |
if (childpid != -1) { |
923 |
> |
fprintf(stderr, "%s: too many calculations\n", progname); |
924 |
> |
exit(1); |
925 |
> |
} |
926 |
> |
strcpy(combuf, prog); |
927 |
> |
strcat(combuf, args); |
928 |
> |
cp = combuf; |
929 |
> |
wp = argv; |
930 |
> |
for ( ; ; ) { |
931 |
> |
while (isspace(*cp)) /* nullify spaces */ |
932 |
> |
*cp++ = '\0'; |
933 |
> |
if (!*cp) /* all done? */ |
934 |
> |
break; |
935 |
> |
*wp++ = cp; /* add argument to list */ |
936 |
> |
while (*++cp && !isspace(*cp)) |
937 |
> |
; |
938 |
> |
} |
939 |
> |
*wp = NULL; |
940 |
> |
/* start process */ |
941 |
> |
if ((rval = open_process(PDesc, argv)) < 0) |
942 |
> |
syserror(progname); |
943 |
> |
if (rval == 0) { |
944 |
> |
fprintf(stderr, "%s: command not found\n", argv[0]); |
945 |
> |
exit(1); |
946 |
> |
} |
947 |
> |
packsiz = rval/(6*sizeof(float)) - 1; |
948 |
> |
if (packsiz > PACKSIZ) |
949 |
> |
packsiz = PACKSIZ; |
950 |
> |
queuesiz = 0; |
951 |
> |
} |
952 |
> |
|
953 |
> |
|
954 |
> |
caldone() /* done with calculation */ |
955 |
> |
{ |
956 |
> |
if (childpid == -1) |
957 |
> |
return; |
958 |
> |
clearqueue(); |
959 |
> |
close_process(PDesc); |
960 |
> |
childpid = -1; |
961 |
> |
} |
962 |
> |
|
963 |
> |
|
964 |
> |
rcalfill(x, y) /* fill with ray-calculated pixel */ |
965 |
> |
int x, y; |
966 |
> |
{ |
967 |
> |
if (queuesiz >= packsiz) /* flush queue if needed */ |
968 |
> |
clearqueue(); |
969 |
> |
/* add position to queue */ |
970 |
> |
queue[queuesiz][0] = x; |
971 |
> |
queue[queuesiz][1] = y; |
972 |
> |
queuesiz++; |
973 |
> |
} |
974 |
> |
|
975 |
> |
|
976 |
> |
clearqueue() /* process queue */ |
977 |
> |
{ |
978 |
> |
FVECT orig, dir; |
979 |
> |
float fbuf[6*(PACKSIZ+1)]; |
980 |
> |
register float *fbp; |
981 |
> |
register int i; |
982 |
> |
|
983 |
> |
if (queuesiz == 0) |
984 |
> |
return; |
985 |
> |
fbp = fbuf; |
986 |
> |
for (i = 0; i < queuesiz; i++) { |
987 |
> |
viewray(orig, dir, &ourview, |
988 |
> |
(queue[i][0]+.5)/hresolu, |
989 |
> |
(queue[i][1]+.5)/vresolu); |
990 |
> |
*fbp++ = orig[0]; *fbp++ = orig[1]; *fbp++ = orig[2]; |
991 |
> |
*fbp++ = dir[0]; *fbp++ = dir[1]; *fbp++ = dir[2]; |
992 |
> |
} |
993 |
> |
/* mark end and get results */ |
994 |
> |
bzero((char *)fbp, 6*sizeof(float)); |
995 |
> |
if (process(PDesc, fbuf, fbuf, 4*sizeof(float)*queuesiz, |
996 |
> |
6*sizeof(float)*(queuesiz+1)) != |
997 |
> |
4*sizeof(float)*queuesiz) { |
998 |
> |
fprintf(stderr, "%s: error reading from rtrace process\n", |
999 |
> |
progname); |
1000 |
> |
exit(1); |
1001 |
> |
} |
1002 |
> |
fbp = fbuf; |
1003 |
> |
for (i = 0; i < queuesiz; i++) { |
1004 |
> |
if (ourexp > 0 && ourexp != 1.0) { |
1005 |
> |
fbp[0] *= ourexp; |
1006 |
> |
fbp[1] *= ourexp; |
1007 |
> |
fbp[2] *= ourexp; |
1008 |
|
} |
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 |
+ |
} |
1019 |
+ |
queuesiz = 0; |
1020 |
+ |
} |
1021 |
+ |
|
1022 |
+ |
|
1023 |
+ |
syserror(s) /* report error and exit */ |
1024 |
+ |
char *s; |
1025 |
+ |
{ |
1026 |
+ |
perror(s); |
1027 |
+ |
exit(1); |
1028 |
|
} |