10 |
|
|
11 |
|
#include "standard.h" |
12 |
|
|
13 |
+ |
#include <fcntl.h> |
14 |
+ |
|
15 |
|
#include "view.h" |
16 |
|
|
17 |
|
#include "color.h" |
18 |
|
|
19 |
< |
#define pscan(y) (ourpict+(y)*ourview.hresolu) |
18 |
< |
#define zscan(y) (ourzbuf+(y)*ourview.hresolu) |
19 |
> |
#include "random.h" |
20 |
|
|
21 |
< |
#define F_FORE 1 /* fill foreground */ |
22 |
< |
#define F_BACK 2 /* fill background */ |
21 |
> |
#ifndef BSD |
22 |
> |
#define vfork fork |
23 |
> |
#endif |
24 |
|
|
25 |
+ |
#define pscan(y) (ourpict+(y)*hresolu) |
26 |
+ |
#define zscan(y) (ourzbuf+(y)*hresolu) |
27 |
+ |
|
28 |
+ |
#define PMASK 0xfffffff /* probability mask */ |
29 |
+ |
#define sampval(x) (long)((x)*(PMASK+1)+.5) |
30 |
+ |
#define samp(p) ((p) > (random()&PMASK)) |
31 |
+ |
|
32 |
+ |
#define F_FORE 1 /* fill foreground */ |
33 |
+ |
#define F_BACK 2 /* fill background */ |
34 |
+ |
|
35 |
+ |
#define PACKSIZ 42 /* calculation packet size */ |
36 |
+ |
|
37 |
+ |
#define RTCOM "rtrace -h -ovl -fff %s" |
38 |
+ |
|
39 |
|
#define ABS(x) ((x)>0?(x):-(x)) |
40 |
|
|
41 |
< |
VIEW ourview = STDVIEW(512); /* desired view */ |
41 |
> |
struct position {int x,y; float z;}; |
42 |
|
|
43 |
+ |
VIEW ourview = STDVIEW; /* desired view */ |
44 |
+ |
int hresolu = 512; /* horizontal resolution */ |
45 |
+ |
int vresolu = 512; /* vertical resolution */ |
46 |
+ |
double pixaspect = 1.0; /* pixel aspect ratio */ |
47 |
+ |
|
48 |
|
double zeps = .02; /* allowed z epsilon */ |
49 |
|
|
50 |
|
COLR *ourpict; /* output picture */ |
52 |
|
|
53 |
|
char *progname; |
54 |
|
|
55 |
< |
VIEW theirview = STDVIEW(512); /* input view */ |
56 |
< |
int gotview; /* got input view? */ |
57 |
< |
|
58 |
< |
int fill = F_FORE|F_BACK; /* selected fill algorithm */ |
38 |
< |
extern int backfill(); /* fill functions */ |
39 |
< |
int (*deffill)() = backfill; /* selected fill function */ |
55 |
> |
int fillo = F_FORE|F_BACK; /* selected fill options */ |
56 |
> |
long sampprob = 0; /* sample probability */ |
57 |
> |
extern int backfill(), rcalfill(); /* fill functions */ |
58 |
> |
int (*fillfunc)() = backfill; /* selected fill function */ |
59 |
|
COLR backcolr = BLKCOLR; /* background color */ |
60 |
+ |
double backz = 0.0; /* background z value */ |
61 |
+ |
int normdist = 1; /* normalized distance? */ |
62 |
+ |
double ourexp = -1; /* output picture exposure */ |
63 |
|
|
64 |
+ |
VIEW theirview = STDVIEW; /* input view */ |
65 |
+ |
int gotview; /* got input view? */ |
66 |
+ |
int thresolu, tvresolu; /* input resolution */ |
67 |
+ |
double theirexp; /* input picture exposure */ |
68 |
|
double theirs2ours[4][4]; /* transformation matrix */ |
43 |
– |
int normdist = 1; /* normalized distance? */ |
69 |
|
|
70 |
+ |
int childpid = -1; /* id of fill process */ |
71 |
+ |
FILE *psend, *precv; /* pipes to/from fill calculation */ |
72 |
+ |
int queue[PACKSIZ][2]; /* pending pixels */ |
73 |
+ |
int queuesiz; /* number of pixels pending */ |
74 |
|
|
75 |
+ |
|
76 |
|
main(argc, argv) /* interpolate pictures */ |
77 |
|
int argc; |
78 |
|
char *argv[]; |
82 |
|
int gotvfile = 0; |
83 |
|
char *zfile = NULL; |
84 |
|
char *err; |
85 |
< |
int i; |
85 |
> |
int i, rval; |
86 |
|
|
87 |
|
progname = argv[0]; |
88 |
|
|
89 |
< |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
89 |
> |
for (i = 1; i < argc && argv[i][0] == '-'; i++) { |
90 |
> |
rval = getviewopt(&ourview, argc-i, argv+i); |
91 |
> |
if (rval >= 0) { |
92 |
> |
i += rval; |
93 |
> |
continue; |
94 |
> |
} |
95 |
|
switch (argv[i][1]) { |
96 |
|
case 't': /* threshold */ |
97 |
|
check(2,1); |
105 |
|
switch (argv[i][2]) { |
106 |
|
case '0': /* none */ |
107 |
|
check(3,0); |
108 |
< |
fill = 0; |
108 |
> |
fillo = 0; |
109 |
|
break; |
110 |
|
case 'f': /* foreground */ |
111 |
|
check(3,0); |
112 |
< |
fill = F_FORE; |
112 |
> |
fillo = F_FORE; |
113 |
|
break; |
114 |
|
case 'b': /* background */ |
115 |
|
check(3,0); |
116 |
< |
fill = F_BACK; |
116 |
> |
fillo = F_BACK; |
117 |
|
break; |
118 |
|
case 'a': /* all */ |
119 |
|
check(3,0); |
120 |
< |
fill = F_FORE|F_BACK; |
120 |
> |
fillo = F_FORE|F_BACK; |
121 |
|
break; |
122 |
+ |
case 's': /* sample */ |
123 |
+ |
check(3,1); |
124 |
+ |
sampprob = sampval(atof(argv[++i])); |
125 |
+ |
break; |
126 |
|
case 'c': /* color */ |
127 |
|
check(3,3); |
128 |
< |
deffill = backfill; |
128 |
> |
fillfunc = backfill; |
129 |
|
setcolr(backcolr, atof(argv[i+1]), |
130 |
|
atof(argv[i+2]), atof(argv[i+3])); |
131 |
|
i += 3; |
132 |
|
break; |
133 |
+ |
case 'z': /* z value */ |
134 |
+ |
check(3,1); |
135 |
+ |
fillfunc = backfill; |
136 |
+ |
backz = atof(argv[++i]); |
137 |
+ |
break; |
138 |
+ |
case 'r': /* rtrace */ |
139 |
+ |
check(3,1); |
140 |
+ |
fillfunc = rcalfill; |
141 |
+ |
calstart(RTCOM, argv[++i]); |
142 |
+ |
break; |
143 |
|
default: |
144 |
|
goto badopt; |
145 |
|
} |
150 |
|
break; |
151 |
|
case 'x': /* x resolution */ |
152 |
|
check(2,1); |
153 |
< |
ourview.hresolu = atoi(argv[++i]); |
153 |
> |
hresolu = atoi(argv[++i]); |
154 |
|
break; |
155 |
|
case 'y': /* y resolution */ |
156 |
|
check(2,1); |
157 |
< |
ourview.vresolu = atoi(argv[++i]); |
157 |
> |
vresolu = atoi(argv[++i]); |
158 |
|
break; |
159 |
< |
case 'v': /* view */ |
160 |
< |
switch (argv[i][2]) { |
161 |
< |
case 't': /* type */ |
162 |
< |
check(4,0); |
163 |
< |
ourview.type = argv[i][3]; |
164 |
< |
break; |
116 |
< |
case 'p': /* point */ |
117 |
< |
check(3,3); |
118 |
< |
ourview.vp[0] = atof(argv[++i]); |
119 |
< |
ourview.vp[1] = atof(argv[++i]); |
120 |
< |
ourview.vp[2] = atof(argv[++i]); |
121 |
< |
break; |
122 |
< |
case 'd': /* direction */ |
123 |
< |
check(3,3); |
124 |
< |
ourview.vdir[0] = atof(argv[++i]); |
125 |
< |
ourview.vdir[1] = atof(argv[++i]); |
126 |
< |
ourview.vdir[2] = atof(argv[++i]); |
127 |
< |
break; |
128 |
< |
case 'u': /* up */ |
129 |
< |
check(3,3); |
130 |
< |
ourview.vup[0] = atof(argv[++i]); |
131 |
< |
ourview.vup[1] = atof(argv[++i]); |
132 |
< |
ourview.vup[2] = atof(argv[++i]); |
133 |
< |
break; |
134 |
< |
case 'h': /* horizontal */ |
135 |
< |
check(3,1); |
136 |
< |
ourview.horiz = atof(argv[++i]); |
137 |
< |
break; |
138 |
< |
case 'v': /* vertical */ |
139 |
< |
check(3,1); |
140 |
< |
ourview.vert = atof(argv[++i]); |
141 |
< |
break; |
142 |
< |
case 'f': /* file */ |
143 |
< |
check(3,1); |
144 |
< |
gotvfile = viewfile(argv[++i], &ourview); |
145 |
< |
if (gotvfile < 0) { |
146 |
< |
perror(argv[i]); |
147 |
< |
exit(1); |
148 |
< |
} else if (gotvfile == 0) { |
149 |
< |
fprintf(stderr, "%s: bad view file\n", |
150 |
< |
argv[i]); |
151 |
< |
exit(1); |
152 |
< |
} |
153 |
< |
break; |
154 |
< |
default: |
159 |
> |
case 'p': /* pixel aspect */ |
160 |
> |
check(2,1); |
161 |
> |
pixaspect = atof(argv[++i]); |
162 |
> |
break; |
163 |
> |
case 'v': /* view file */ |
164 |
> |
if (argv[i][2] != 'f') |
165 |
|
goto badopt; |
166 |
+ |
check(3,1); |
167 |
+ |
gotvfile = viewfile(argv[++i], &ourview, 0, 0); |
168 |
+ |
if (gotvfile < 0) { |
169 |
+ |
perror(argv[i]); |
170 |
+ |
exit(1); |
171 |
+ |
} else if (gotvfile == 0) { |
172 |
+ |
fprintf(stderr, "%s: bad view file\n", |
173 |
+ |
argv[i]); |
174 |
+ |
exit(1); |
175 |
|
} |
176 |
|
break; |
177 |
|
default: |
180 |
|
progname, argv[i]); |
181 |
|
goto userr; |
182 |
|
} |
183 |
+ |
} |
184 |
|
/* check arguments */ |
185 |
< |
if (argc-i < 2 || (argc-i)%2) |
185 |
> |
if ((argc-i)%2) |
186 |
|
goto userr; |
187 |
|
/* set view */ |
188 |
|
if (err = setview(&ourview)) { |
189 |
|
fprintf(stderr, "%s: %s\n", progname, err); |
190 |
|
exit(1); |
191 |
|
} |
192 |
+ |
normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu); |
193 |
|
/* allocate frame */ |
194 |
< |
ourpict = (COLR *)malloc(ourview.hresolu*ourview.vresolu*sizeof(COLR)); |
195 |
< |
ourzbuf = (float *)calloc(ourview.hresolu*ourview.vresolu,sizeof(float)); |
196 |
< |
if (ourpict == NULL || ourzbuf == NULL) { |
197 |
< |
perror(progname); |
177 |
< |
exit(1); |
178 |
< |
} |
194 |
> |
ourpict = (COLR *)malloc(hresolu*vresolu*sizeof(COLR)); |
195 |
> |
ourzbuf = (float *)calloc(hresolu*vresolu,sizeof(float)); |
196 |
> |
if (ourpict == NULL || ourzbuf == NULL) |
197 |
> |
syserror(); |
198 |
|
/* get input */ |
199 |
|
for ( ; i < argc; i += 2) |
200 |
|
addpicture(argv[i], argv[i+1]); |
201 |
|
/* fill in spaces */ |
202 |
< |
if (fill&F_BACK) |
203 |
< |
backpicture(); |
202 |
> |
if (fillo&F_BACK) |
203 |
> |
backpicture(fillfunc, sampprob); |
204 |
|
else |
205 |
< |
fillpicture(); |
205 |
> |
fillpicture(fillfunc); |
206 |
> |
/* close calculation */ |
207 |
> |
caldone(); |
208 |
|
/* add to header */ |
209 |
|
printargs(argc, argv, stdout); |
210 |
|
if (gotvfile) { |
211 |
< |
printf(VIEWSTR); |
211 |
> |
fputs(VIEWSTR, stdout); |
212 |
|
fprintview(&ourview, stdout); |
213 |
< |
printf("\n"); |
213 |
> |
putc('\n', stdout); |
214 |
|
} |
215 |
< |
printf("\n"); |
215 |
> |
if (pixaspect < .99 || pixaspect > 1.01) |
216 |
> |
fputaspect(pixaspect, stdout); |
217 |
> |
if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
218 |
> |
fputexpos(ourexp, stdout); |
219 |
> |
putc('\n', stdout); |
220 |
|
/* write picture */ |
221 |
|
writepicture(); |
222 |
|
/* write z file */ |
226 |
|
exit(0); |
227 |
|
userr: |
228 |
|
fprintf(stderr, |
229 |
< |
"Usage: %s [view opts][-t zthresh][-z zout][-fT][-n] pfile zspec ..\n", |
229 |
> |
"Usage: %s [view opts][-t eps][-z zout][-fT][-n] pfile zspec ..\n", |
230 |
|
progname); |
231 |
|
exit(1); |
232 |
|
#undef check |
236 |
|
headline(s) /* process header string */ |
237 |
|
char *s; |
238 |
|
{ |
239 |
< |
static char *altname[] = {"rview","rpict","pinterp",VIEWSTR,NULL}; |
239 |
> |
static char *altname[] = {VIEWSTR,"rpict","rview","pinterp",NULL}; |
240 |
|
register char **an; |
241 |
|
|
242 |
< |
printf("\t%s", s); |
242 |
> |
putc('\t', stdout); |
243 |
> |
fputs(s, stdout); |
244 |
|
|
245 |
+ |
if (isexpos(s)) { |
246 |
+ |
theirexp *= exposval(s); |
247 |
+ |
return; |
248 |
+ |
} |
249 |
|
for (an = altname; *an != NULL; an++) |
250 |
|
if (!strncmp(*an, s, strlen(*an))) { |
251 |
< |
if (sscanview(&theirview, s+strlen(*an)) == 0) |
251 |
> |
if (sscanview(&theirview, s+strlen(*an)) > 0) |
252 |
|
gotview++; |
253 |
|
break; |
254 |
|
} |
259 |
|
char *pfile, *zspec; |
260 |
|
{ |
261 |
|
extern double atof(); |
262 |
< |
FILE *pfp, *zfp; |
262 |
> |
FILE *pfp; |
263 |
> |
int zfd; |
264 |
|
char *err; |
265 |
|
COLR *scanin; |
266 |
< |
float *zin, *zlast; |
267 |
< |
int *plast; |
266 |
> |
float *zin; |
267 |
> |
struct position *plast; |
268 |
|
int y; |
269 |
|
/* open picture file */ |
270 |
|
if ((pfp = fopen(pfile, "r")) == NULL) { |
271 |
|
perror(pfile); |
272 |
|
exit(1); |
273 |
|
} |
274 |
< |
/* get header and view */ |
275 |
< |
printf("%s:\n", pfile); |
274 |
> |
/* get header with exposure and view */ |
275 |
> |
theirexp = 1.0; |
276 |
|
gotview = 0; |
277 |
+ |
printf("%s:\n", pfile); |
278 |
|
getheader(pfp, headline); |
279 |
< |
if (!gotview || fgetresolu(&theirview.hresolu, &theirview.vresolu, pfp) |
279 |
> |
if (!gotview || fgetresolu(&thresolu, &tvresolu, pfp) |
280 |
|
!= (YMAJOR|YDECR)) { |
281 |
|
fprintf(stderr, "%s: picture view error\n", pfile); |
282 |
|
exit(1); |
283 |
|
} |
284 |
+ |
if (ourexp <= 0) |
285 |
+ |
ourexp = theirexp; |
286 |
+ |
else if (ABS(theirexp-ourexp) > .01*ourexp) |
287 |
+ |
fprintf(stderr, "%s: different exposure (warning)\n", pfile); |
288 |
|
if (err = setview(&theirview)) { |
289 |
|
fprintf(stderr, "%s: %s\n", pfile, err); |
290 |
|
exit(1); |
292 |
|
/* compute transformation */ |
293 |
|
pixform(theirs2ours, &theirview, &ourview); |
294 |
|
/* allocate scanlines */ |
295 |
< |
scanin = (COLR *)malloc(theirview.hresolu*sizeof(COLR)); |
296 |
< |
zin = (float *)malloc(theirview.hresolu*sizeof(float)); |
297 |
< |
plast = (int *)calloc(theirview.hresolu, sizeof(int)); |
298 |
< |
zlast = (float *)calloc(theirview.hresolu, sizeof(float)); |
299 |
< |
if (scanin == NULL || zin == NULL || plast == NULL || zlast == NULL) { |
264 |
< |
perror(progname); |
265 |
< |
exit(1); |
266 |
< |
} |
295 |
> |
scanin = (COLR *)malloc(thresolu*sizeof(COLR)); |
296 |
> |
zin = (float *)malloc(thresolu*sizeof(float)); |
297 |
> |
plast = (struct position *)calloc(thresolu, sizeof(struct position)); |
298 |
> |
if (scanin == NULL || zin == NULL || plast == NULL) |
299 |
> |
syserror(); |
300 |
|
/* get z specification or file */ |
301 |
< |
if ((zfp = fopen(zspec, "r")) == NULL) { |
301 |
> |
if ((zfd = open(zspec, O_RDONLY)) == -1) { |
302 |
|
double zvalue; |
303 |
|
register int x; |
304 |
|
if (!isfloat(zspec) || (zvalue = atof(zspec)) <= 0.0) { |
305 |
|
perror(zspec); |
306 |
|
exit(1); |
307 |
|
} |
308 |
< |
for (x = 0; x < theirview.hresolu; x++) |
308 |
> |
for (x = 0; x < thresolu; x++) |
309 |
|
zin[x] = zvalue; |
310 |
|
} |
311 |
|
/* load image */ |
312 |
< |
for (y = theirview.vresolu-1; y >= 0; y--) { |
313 |
< |
if (freadcolrs(scanin, theirview.hresolu, pfp) < 0) { |
312 |
> |
for (y = tvresolu-1; y >= 0; y--) { |
313 |
> |
if (freadcolrs(scanin, thresolu, pfp) < 0) { |
314 |
|
fprintf(stderr, "%s: read error\n", pfile); |
315 |
|
exit(1); |
316 |
|
} |
317 |
< |
if (zfp != NULL |
318 |
< |
&& fread(zin,sizeof(float),theirview.hresolu,zfp) |
286 |
< |
< theirview.hresolu) { |
317 |
> |
if (zfd != -1 && read(zfd,(char *)zin,thresolu*sizeof(float)) |
318 |
> |
< thresolu*sizeof(float)) { |
319 |
|
fprintf(stderr, "%s: read error\n", zspec); |
320 |
|
exit(1); |
321 |
|
} |
322 |
< |
addscanline(y, scanin, zin, plast, zlast); |
322 |
> |
addscanline(y, scanin, zin, plast); |
323 |
|
} |
324 |
|
/* clean up */ |
325 |
|
free((char *)scanin); |
326 |
|
free((char *)zin); |
327 |
|
free((char *)plast); |
296 |
– |
free((char *)zlast); |
328 |
|
fclose(pfp); |
329 |
< |
if (zfp != NULL) |
330 |
< |
fclose(zfp); |
329 |
> |
if (zfd != -1) |
330 |
> |
close(zfd); |
331 |
|
} |
332 |
|
|
333 |
|
|
338 |
|
double m4t[4][4]; |
339 |
|
|
340 |
|
setident4(xfmat); |
341 |
< |
xfmat[0][0] = vw1->vhinc[0]; |
342 |
< |
xfmat[0][1] = vw1->vhinc[1]; |
343 |
< |
xfmat[0][2] = vw1->vhinc[2]; |
344 |
< |
xfmat[1][0] = vw1->vvinc[0]; |
345 |
< |
xfmat[1][1] = vw1->vvinc[1]; |
346 |
< |
xfmat[1][2] = vw1->vvinc[2]; |
341 |
> |
xfmat[0][0] = vw1->hvec[0]; |
342 |
> |
xfmat[0][1] = vw1->hvec[1]; |
343 |
> |
xfmat[0][2] = vw1->hvec[2]; |
344 |
> |
xfmat[1][0] = vw1->vvec[0]; |
345 |
> |
xfmat[1][1] = vw1->vvec[1]; |
346 |
> |
xfmat[1][2] = vw1->vvec[2]; |
347 |
|
xfmat[2][0] = vw1->vdir[0]; |
348 |
|
xfmat[2][1] = vw1->vdir[1]; |
349 |
|
xfmat[2][2] = vw1->vdir[2]; |
351 |
|
xfmat[3][1] = vw1->vp[1]; |
352 |
|
xfmat[3][2] = vw1->vp[2]; |
353 |
|
setident4(m4t); |
354 |
< |
m4t[0][0] = vw2->vhinc[0]/vw2->vhn2; |
355 |
< |
m4t[1][0] = vw2->vhinc[1]/vw2->vhn2; |
356 |
< |
m4t[2][0] = vw2->vhinc[2]/vw2->vhn2; |
357 |
< |
m4t[3][0] = -DOT(vw2->vp,vw2->vhinc)/vw2->vhn2; |
358 |
< |
m4t[0][1] = vw2->vvinc[0]/vw2->vvn2; |
359 |
< |
m4t[1][1] = vw2->vvinc[1]/vw2->vvn2; |
360 |
< |
m4t[2][1] = vw2->vvinc[2]/vw2->vvn2; |
361 |
< |
m4t[3][1] = -DOT(vw2->vp,vw2->vvinc)/vw2->vvn2; |
354 |
> |
m4t[0][0] = vw2->hvec[0]/vw2->hn2; |
355 |
> |
m4t[1][0] = vw2->hvec[1]/vw2->hn2; |
356 |
> |
m4t[2][0] = vw2->hvec[2]/vw2->hn2; |
357 |
> |
m4t[3][0] = -DOT(vw2->vp,vw2->hvec)/vw2->hn2; |
358 |
> |
m4t[0][1] = vw2->vvec[0]/vw2->vn2; |
359 |
> |
m4t[1][1] = vw2->vvec[1]/vw2->vn2; |
360 |
> |
m4t[2][1] = vw2->vvec[2]/vw2->vn2; |
361 |
> |
m4t[3][1] = -DOT(vw2->vp,vw2->vvec)/vw2->vn2; |
362 |
|
m4t[0][2] = vw2->vdir[0]; |
363 |
|
m4t[1][2] = vw2->vdir[1]; |
364 |
|
m4t[2][2] = vw2->vdir[2]; |
367 |
|
} |
368 |
|
|
369 |
|
|
370 |
< |
addscanline(y, pline, zline, lasty, lastyz) /* add scanline to output */ |
370 |
> |
addscanline(y, pline, zline, lasty) /* add scanline to output */ |
371 |
|
int y; |
372 |
|
COLR *pline; |
373 |
|
float *zline; |
374 |
< |
int *lasty; /* input/output */ |
344 |
< |
float *lastyz; /* input/output */ |
374 |
> |
struct position *lasty; /* input/output */ |
375 |
|
{ |
376 |
|
extern double sqrt(); |
377 |
|
double pos[3]; |
378 |
< |
int lastx = 0; |
349 |
< |
double lastxz = 0; |
350 |
< |
double zt; |
351 |
< |
int xpos, ypos; |
378 |
> |
struct position lastx, newpos; |
379 |
|
register int x; |
380 |
|
|
381 |
< |
for (x = theirview.hresolu-1; x >= 0; x--) { |
382 |
< |
pos[0] = x - .5*(theirview.hresolu-1); |
383 |
< |
pos[1] = y - .5*(theirview.vresolu-1); |
381 |
> |
lastx.z = 0; |
382 |
> |
for (x = thresolu-1; x >= 0; x--) { |
383 |
> |
pos[0] = (x+.5)/thresolu + theirview.hoff - .5; |
384 |
> |
pos[1] = (y+.5)/tvresolu + theirview.voff - .5; |
385 |
|
pos[2] = zline[x]; |
386 |
|
if (theirview.type == VT_PER) { |
387 |
|
if (normdist) /* adjust for eye-ray distance */ |
388 |
|
pos[2] /= sqrt( 1. |
389 |
< |
+ pos[0]*pos[0]*theirview.vhn2 |
390 |
< |
+ pos[1]*pos[1]*theirview.vvn2 ); |
389 |
> |
+ pos[0]*pos[0]*theirview.hn2 |
390 |
> |
+ pos[1]*pos[1]*theirview.vn2 ); |
391 |
|
pos[0] *= pos[2]; |
392 |
|
pos[1] *= pos[2]; |
393 |
|
} |
394 |
|
multp3(pos, pos, theirs2ours); |
395 |
< |
if (pos[2] <= 0) |
395 |
> |
if (pos[2] <= 0) { |
396 |
> |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
397 |
|
continue; |
398 |
+ |
} |
399 |
|
if (ourview.type == VT_PER) { |
400 |
|
pos[0] /= pos[2]; |
401 |
|
pos[1] /= pos[2]; |
402 |
|
} |
403 |
< |
pos[0] += .5*ourview.hresolu; |
404 |
< |
pos[1] += .5*ourview.vresolu; |
405 |
< |
if (pos[0] < 0 || (xpos = pos[0]) >= ourview.hresolu |
406 |
< |
|| pos[1] < 0 || (ypos = pos[1]) >= ourview.vresolu) |
407 |
< |
continue; |
403 |
> |
pos[0] += .5 - ourview.hoff; |
404 |
> |
pos[1] += .5 - ourview.voff; |
405 |
> |
newpos.x = pos[0] * hresolu; |
406 |
> |
newpos.y = pos[1] * vresolu; |
407 |
> |
newpos.z = zline[x]; |
408 |
|
/* add pixel to our image */ |
409 |
< |
zt = 2.*zeps*zline[x]; |
410 |
< |
addpixel(xpos, ypos, |
411 |
< |
(fill&F_FORE && ABS(zline[x]-lastxz) <= zt) |
412 |
< |
? lastx - xpos : 1, |
413 |
< |
(fill&F_FORE && ABS(zline[x]-lastyz[x]) <= zt) |
414 |
< |
? lasty[x] - ypos : 1, |
415 |
< |
pline[x], pos[2]); |
416 |
< |
lastx = xpos; |
387 |
< |
lasty[x] = ypos; |
388 |
< |
lastxz = lastyz[x] = zline[x]; |
409 |
> |
if (pos[0] >= 0 && newpos.x < hresolu |
410 |
> |
&& pos[1] >= 0 && newpos.y < vresolu) { |
411 |
> |
addpixel(&newpos, &lastx, &lasty[x], pline[x], pos[2]); |
412 |
> |
lasty[x].x = lastx.x = newpos.x; |
413 |
> |
lasty[x].y = lastx.y = newpos.y; |
414 |
> |
lasty[x].z = lastx.z = newpos.z; |
415 |
> |
} else |
416 |
> |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
417 |
|
} |
418 |
|
} |
419 |
|
|
420 |
|
|
421 |
< |
addpixel(xstart, ystart, width, height, pix, z) /* fill in area for pixel */ |
422 |
< |
int xstart, ystart; |
395 |
< |
int width, height; |
421 |
> |
addpixel(p0, p1, p2, pix, z) /* fill in pixel parallelogram */ |
422 |
> |
struct position *p0, *p1, *p2; |
423 |
|
COLR pix; |
424 |
|
double z; |
425 |
|
{ |
426 |
< |
register int x, y; |
427 |
< |
/* make width and height positive */ |
428 |
< |
if (width < 0) { |
429 |
< |
width = -width; |
430 |
< |
xstart = xstart-width+1; |
431 |
< |
} else if (width == 0) |
432 |
< |
width = 1; |
433 |
< |
if (height < 0) { |
434 |
< |
height = -height; |
435 |
< |
ystart = ystart-height+1; |
436 |
< |
} else if (height == 0) |
437 |
< |
height = 1; |
438 |
< |
/* fill pixel(s) within rectangle */ |
439 |
< |
for (y = ystart; y < ystart+height; y++) |
440 |
< |
for (x = xstart; x < xstart+width; x++) |
441 |
< |
if (zscan(y)[x] <= 0 |
442 |
< |
|| zscan(y)[x]-z > zeps*zscan(y)[x]) { |
426 |
> |
double zt = 2.*zeps*p0->z; /* threshold */ |
427 |
> |
int s1x, s1y, s2x, s2y; /* step sizes */ |
428 |
> |
int l1, l2, c1, c2; /* side lengths and counters */ |
429 |
> |
int p1isy; /* p0p1 along y? */ |
430 |
> |
int x1, y1; /* p1 position */ |
431 |
> |
register int x, y; /* final position */ |
432 |
> |
|
433 |
> |
/* compute vector p0p1 */ |
434 |
> |
if (fillo&F_FORE && ABS(p1->z-p0->z) <= zt) { |
435 |
> |
s1x = p1->x - p0->x; |
436 |
> |
s1y = p1->y - p0->y; |
437 |
> |
l1 = ABS(s1x); |
438 |
> |
if (p1isy = (ABS(s1y) > l1)) |
439 |
> |
l1 = ABS(s1y); |
440 |
> |
} else { |
441 |
> |
l1 = s1x = s1y = 1; |
442 |
> |
p1isy = -1; |
443 |
> |
} |
444 |
> |
/* compute vector p0p2 */ |
445 |
> |
if (fillo&F_FORE && ABS(p2->z-p0->z) <= zt) { |
446 |
> |
s2x = p2->x - p0->x; |
447 |
> |
s2y = p2->y - p0->y; |
448 |
> |
if (p1isy == 1) |
449 |
> |
l2 = ABS(s2x); |
450 |
> |
else { |
451 |
> |
l2 = ABS(s2y); |
452 |
> |
if (p1isy != 0 && ABS(s2x) > l2) |
453 |
> |
l2 = ABS(s2x); |
454 |
> |
} |
455 |
> |
} else |
456 |
> |
l2 = s2x = s2y = 1; |
457 |
> |
/* fill the parallelogram */ |
458 |
> |
for (c1 = l1; c1-- > 0; ) { |
459 |
> |
x1 = p0->x + c1*s1x/l1; |
460 |
> |
y1 = p0->y + c1*s1y/l1; |
461 |
> |
for (c2 = l2; c2-- > 0; ) { |
462 |
> |
x = x1 + c2*s2x/l2; |
463 |
> |
y = y1 + c2*s2y/l2; |
464 |
> |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
465 |
> |
> zeps*zscan(y)[x]) { |
466 |
|
zscan(y)[x] = z; |
467 |
|
copycolr(pscan(y)[x], pix); |
468 |
|
} |
469 |
+ |
} |
470 |
+ |
} |
471 |
|
} |
472 |
|
|
473 |
|
|
474 |
< |
backpicture() /* background fill algorithm */ |
474 |
> |
backpicture(fill, prob) /* background fill algorithm */ |
475 |
> |
int (*fill)(); |
476 |
> |
long prob; |
477 |
|
{ |
478 |
|
int *yback, xback; |
479 |
|
int y; |
480 |
|
COLR pfill; |
481 |
|
register int x, i; |
482 |
|
/* get back buffer */ |
483 |
< |
yback = (int *)malloc(ourview.hresolu*sizeof(int)); |
484 |
< |
if (yback == NULL) { |
485 |
< |
perror(progname); |
486 |
< |
return; |
433 |
< |
} |
434 |
< |
for (x = 0; x < ourview.hresolu; x++) |
483 |
> |
yback = (int *)malloc(hresolu*sizeof(int)); |
484 |
> |
if (yback == NULL) |
485 |
> |
syserror(); |
486 |
> |
for (x = 0; x < hresolu; x++) |
487 |
|
yback[x] = -2; |
488 |
|
/* |
489 |
|
* Xback and yback are the pixel locations of suitable |
492 |
|
* that there is no suitable background in this direction. |
493 |
|
*/ |
494 |
|
/* fill image */ |
495 |
< |
for (y = 0; y < ourview.vresolu; y++) { |
495 |
> |
for (y = 0; y < vresolu; y++) { |
496 |
|
xback = -2; |
497 |
< |
for (x = 0; x < ourview.hresolu; x++) |
497 |
> |
for (x = 0; x < hresolu; x++) |
498 |
|
if (zscan(y)[x] <= 0) { /* empty pixel */ |
499 |
|
/* |
500 |
|
* First, find background from above or below. |
501 |
|
* (farthest assigned pixel) |
502 |
|
*/ |
503 |
|
if (yback[x] == -2) { |
504 |
< |
for (i = y+1; i < ourview.vresolu; i++) |
504 |
> |
for (i = y+1; i < vresolu; i++) |
505 |
|
if (zscan(i)[x] > 0) |
506 |
|
break; |
507 |
< |
if (i < ourview.vresolu |
507 |
> |
if (i < vresolu |
508 |
|
&& (y <= 0 || zscan(y-1)[x] < zscan(i)[x])) |
509 |
|
yback[x] = i; |
510 |
|
else |
514 |
|
* Next, find background from left or right. |
515 |
|
*/ |
516 |
|
if (xback == -2) { |
517 |
< |
for (i = x+1; i < ourview.hresolu; i++) |
517 |
> |
for (i = x+1; i < hresolu; i++) |
518 |
|
if (zscan(y)[i] > 0) |
519 |
|
break; |
520 |
< |
if (i < ourview.hresolu |
520 |
> |
if (i < hresolu |
521 |
|
&& (x <= 0 || zscan(y)[x-1] < zscan(y)[i])) |
522 |
|
xback = i; |
523 |
|
else |
525 |
|
} |
526 |
|
/* |
527 |
|
* Check to see if we have no background for |
528 |
< |
* this pixel. If not, use background color. |
528 |
> |
* this pixel. If not, or sampling was |
529 |
> |
* requested, use the given fill function. |
530 |
|
*/ |
531 |
< |
if (xback < 0 && yback[x] < 0) { |
532 |
< |
(*deffill)(x,y); |
531 |
> |
if ((xback < 0 && yback[x] < 0) || samp(prob)) { |
532 |
> |
(*fill)(x,y); |
533 |
|
continue; |
534 |
|
} |
535 |
|
/* |
540 |
|
|| (xback >= 0 && ABS(x-xback) <= 1) |
541 |
|
|| ( ABS(y-yback[x]) > 1 |
542 |
|
&& zscan(yback[x])[x] |
543 |
< |
< zscan(y)[xback] ) ) |
543 |
> |
< zscan(y)[xback] ) ) { |
544 |
|
copycolr(pscan(y)[x],pscan(y)[xback]); |
545 |
< |
else |
545 |
> |
zscan(y)[x] = zscan(y)[xback]; |
546 |
> |
} else { |
547 |
|
copycolr(pscan(y)[x],pscan(yback[x])[x]); |
548 |
+ |
zscan(y)[x] = zscan(yback[x])[x]; |
549 |
+ |
} |
550 |
|
} else { /* full pixel */ |
551 |
|
yback[x] = -2; |
552 |
|
xback = -2; |
556 |
|
} |
557 |
|
|
558 |
|
|
559 |
< |
fillpicture() /* paint in empty pixels with default */ |
559 |
> |
fillpicture(fill) /* paint in empty pixels using fill */ |
560 |
> |
int (*fill)(); |
561 |
|
{ |
562 |
|
register int x, y; |
563 |
|
|
564 |
< |
for (y = 0; y < ourview.vresolu; y++) |
565 |
< |
for (x = 0; x < ourview.hresolu; x++) |
564 |
> |
for (y = 0; y < vresolu; y++) |
565 |
> |
for (x = 0; x < hresolu; x++) |
566 |
|
if (zscan(y)[x] <= 0) |
567 |
< |
(*deffill)(x,y); |
567 |
> |
(*fill)(x,y); |
568 |
|
} |
569 |
|
|
570 |
|
|
572 |
|
{ |
573 |
|
int y; |
574 |
|
|
575 |
< |
fputresolu(YMAJOR|YDECR, ourview.hresolu, ourview.vresolu, stdout); |
576 |
< |
for (y = ourview.vresolu-1; y >= 0; y--) |
577 |
< |
if (fwritecolrs(pscan(y), ourview.hresolu, stdout) < 0) { |
578 |
< |
perror(progname); |
522 |
< |
exit(1); |
523 |
< |
} |
575 |
> |
fputresolu(YMAJOR|YDECR, hresolu, vresolu, stdout); |
576 |
> |
for (y = vresolu-1; y >= 0; y--) |
577 |
> |
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
578 |
> |
syserror(); |
579 |
|
} |
580 |
|
|
581 |
|
|
584 |
|
{ |
585 |
|
extern double sqrt(); |
586 |
|
int donorm = normdist && ourview.type == VT_PER; |
587 |
< |
FILE *fp; |
587 |
> |
int fd; |
588 |
|
int y; |
589 |
|
float *zout; |
590 |
|
|
591 |
< |
if ((fp = fopen(fname, "w")) == NULL) { |
591 |
> |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) { |
592 |
|
perror(fname); |
593 |
|
exit(1); |
594 |
|
} |
595 |
|
if (donorm |
596 |
< |
&& (zout = (float *)malloc(ourview.hresolu*sizeof(float))) == NULL) { |
597 |
< |
perror(progname); |
598 |
< |
exit(1); |
544 |
< |
} |
545 |
< |
for (y = ourview.vresolu-1; y >= 0; y--) { |
596 |
> |
&& (zout = (float *)malloc(hresolu*sizeof(float))) == NULL) |
597 |
> |
syserror(); |
598 |
> |
for (y = vresolu-1; y >= 0; y--) { |
599 |
|
if (donorm) { |
600 |
|
double vx, yzn2; |
601 |
|
register int x; |
602 |
< |
yzn2 = y - .5*(ourview.vresolu-1); |
603 |
< |
yzn2 = 1. + yzn2*yzn2*ourview.vvn2; |
604 |
< |
for (x = 0; x < ourview.hresolu; x++) { |
605 |
< |
vx = x - .5*(ourview.hresolu-1); |
602 |
> |
yzn2 = y - .5*(vresolu-1); |
603 |
> |
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
604 |
> |
for (x = 0; x < hresolu; x++) { |
605 |
> |
vx = x - .5*(hresolu-1); |
606 |
|
zout[x] = zscan(y)[x] |
607 |
< |
* sqrt(vx*vx*ourview.vhn2 + yzn2); |
607 |
> |
* sqrt(vx*vx*ourview.hn2 + yzn2); |
608 |
|
} |
609 |
|
} else |
610 |
|
zout = zscan(y); |
611 |
< |
if (fwrite(zout, sizeof(float), ourview.hresolu, fp) |
612 |
< |
< ourview.hresolu) { |
611 |
> |
if (write(fd, (char *)zout, hresolu*sizeof(float)) |
612 |
> |
< hresolu*sizeof(float)) { |
613 |
|
perror(fname); |
614 |
|
exit(1); |
615 |
|
} |
616 |
|
} |
617 |
|
if (donorm) |
618 |
|
free((char *)zout); |
619 |
< |
fclose(fp); |
619 |
> |
close(fd); |
620 |
|
} |
621 |
|
|
622 |
|
|
637 |
|
register BYTE *dest = pscan(y)[x]; |
638 |
|
|
639 |
|
copycolr(dest, backcolr); |
640 |
+ |
zscan(y)[x] = backz; |
641 |
+ |
} |
642 |
+ |
|
643 |
+ |
|
644 |
+ |
calstart(prog, args) /* start fill calculation */ |
645 |
+ |
char *prog, *args; |
646 |
+ |
{ |
647 |
+ |
char combuf[512]; |
648 |
+ |
int p0[2], p1[2]; |
649 |
+ |
|
650 |
+ |
if (childpid != -1) { |
651 |
+ |
fprintf(stderr, "%s: too many calculations\n", progname); |
652 |
+ |
exit(1); |
653 |
+ |
} |
654 |
+ |
sprintf(combuf, prog, args); |
655 |
+ |
if (pipe(p0) < 0 || pipe(p1) < 0) |
656 |
+ |
syserror(); |
657 |
+ |
if ((childpid = vfork()) == 0) { /* fork calculation */ |
658 |
+ |
close(p0[1]); |
659 |
+ |
close(p1[0]); |
660 |
+ |
if (p0[0] != 0) { |
661 |
+ |
dup2(p0[0], 0); |
662 |
+ |
close(p0[0]); |
663 |
+ |
} |
664 |
+ |
if (p1[1] != 1) { |
665 |
+ |
dup2(p1[1], 1); |
666 |
+ |
close(p1[1]); |
667 |
+ |
} |
668 |
+ |
execl("/bin/sh", "sh", "-c", combuf, 0); |
669 |
+ |
perror("/bin/sh"); |
670 |
+ |
_exit(127); |
671 |
+ |
} |
672 |
+ |
if (childpid == -1) |
673 |
+ |
syserror(); |
674 |
+ |
close(p0[0]); |
675 |
+ |
close(p1[1]); |
676 |
+ |
if ((psend = fdopen(p0[1], "w")) == NULL) |
677 |
+ |
syserror(); |
678 |
+ |
if ((precv = fdopen(p1[0], "r")) == NULL) |
679 |
+ |
syserror(); |
680 |
+ |
queuesiz = 0; |
681 |
+ |
} |
682 |
+ |
|
683 |
+ |
|
684 |
+ |
caldone() /* done with calculation */ |
685 |
+ |
{ |
686 |
+ |
int pid; |
687 |
+ |
|
688 |
+ |
if (childpid == -1) |
689 |
+ |
return; |
690 |
+ |
clearqueue(); |
691 |
+ |
fclose(psend); |
692 |
+ |
fclose(precv); |
693 |
+ |
while ((pid = wait(0)) != -1 && pid != childpid) |
694 |
+ |
; |
695 |
+ |
childpid = -1; |
696 |
+ |
} |
697 |
+ |
|
698 |
+ |
|
699 |
+ |
rcalfill(x, y) /* fill with ray-calculated pixel */ |
700 |
+ |
int x, y; |
701 |
+ |
{ |
702 |
+ |
if (queuesiz >= PACKSIZ) /* flush queue if needed */ |
703 |
+ |
clearqueue(); |
704 |
+ |
/* add position to queue */ |
705 |
+ |
queue[queuesiz][0] = x; |
706 |
+ |
queue[queuesiz][1] = y; |
707 |
+ |
queuesiz++; |
708 |
+ |
} |
709 |
+ |
|
710 |
+ |
|
711 |
+ |
clearqueue() /* process queue */ |
712 |
+ |
{ |
713 |
+ |
FVECT orig, dir; |
714 |
+ |
float fbuf[6]; |
715 |
+ |
register int i; |
716 |
+ |
|
717 |
+ |
for (i = 0; i < queuesiz; i++) { |
718 |
+ |
viewray(orig, dir, &ourview, |
719 |
+ |
(queue[i][0]+.5)/hresolu, |
720 |
+ |
(queue[i][1]+.5)/vresolu); |
721 |
+ |
fbuf[0] = orig[0]; fbuf[1] = orig[1]; fbuf[2] = orig[2]; |
722 |
+ |
fbuf[3] = dir[0]; fbuf[4] = dir[1]; fbuf[5] = dir[2]; |
723 |
+ |
fwrite((char *)fbuf, sizeof(float), 6, psend); |
724 |
+ |
} |
725 |
+ |
/* flush output and get results */ |
726 |
+ |
fbuf[3] = fbuf[4] = fbuf[5] = 0.0; /* mark */ |
727 |
+ |
fwrite((char *)fbuf, sizeof(float), 6, psend); |
728 |
+ |
if (fflush(psend) == EOF) |
729 |
+ |
syserror(); |
730 |
+ |
for (i = 0; i < queuesiz; i++) { |
731 |
+ |
if (fread((char *)fbuf, sizeof(float), 4, precv) < 4) { |
732 |
+ |
fprintf(stderr, "%s: read error in clearqueue\n", |
733 |
+ |
progname); |
734 |
+ |
exit(1); |
735 |
+ |
} |
736 |
+ |
if (ourexp > 0 && ourexp != 1.0) { |
737 |
+ |
fbuf[0] *= ourexp; |
738 |
+ |
fbuf[1] *= ourexp; |
739 |
+ |
fbuf[2] *= ourexp; |
740 |
+ |
} |
741 |
+ |
setcolr(pscan(queue[i][1])[queue[i][0]], |
742 |
+ |
fbuf[0], fbuf[1], fbuf[2]); |
743 |
+ |
zscan(queue[i][1])[queue[i][0]] = fbuf[3]; |
744 |
+ |
} |
745 |
+ |
queuesiz = 0; |
746 |
+ |
} |
747 |
+ |
|
748 |
+ |
|
749 |
+ |
syserror() /* report error and exit */ |
750 |
+ |
{ |
751 |
+ |
perror(progname); |
752 |
+ |
exit(1); |
753 |
|
} |