| 10 |
|
|
| 11 |
|
#include "standard.h" |
| 12 |
|
|
| 13 |
+ |
#include <sys/fcntl.h> |
| 14 |
+ |
|
| 15 |
|
#include "view.h" |
| 16 |
|
|
| 17 |
|
#include "color.h" |
| 18 |
|
|
| 19 |
< |
#define pscan(y) (ourpict+(y)*ourview.hresolu) |
| 20 |
< |
#define zscan(y) (ourzbuf+(y)*ourview.hresolu) |
| 19 |
> |
#define pscan(y) (ourpict+(y)*hresolu) |
| 20 |
> |
#define zscan(y) (ourzbuf+(y)*hresolu) |
| 21 |
|
|
| 22 |
|
#define F_FORE 1 /* fill foreground */ |
| 23 |
|
#define F_BACK 2 /* fill background */ |
| 28 |
|
|
| 29 |
|
#define ABS(x) ((x)>0?(x):-(x)) |
| 30 |
|
|
| 31 |
< |
VIEW ourview = STDVIEW(512); /* desired view */ |
| 31 |
> |
struct position {int x,y; float z;}; |
| 32 |
|
|
| 33 |
+ |
VIEW ourview = STDVIEW; /* desired view */ |
| 34 |
+ |
int hresolu = 512; /* horizontal resolution */ |
| 35 |
+ |
int vresolu = 512; /* vertical resolution */ |
| 36 |
+ |
double pixaspect = 1.0; /* pixel aspect ratio */ |
| 37 |
+ |
|
| 38 |
|
double zeps = .02; /* allowed z epsilon */ |
| 39 |
|
|
| 40 |
|
COLR *ourpict; /* output picture */ |
| 42 |
|
|
| 43 |
|
char *progname; |
| 44 |
|
|
| 38 |
– |
VIEW theirview = STDVIEW(512); /* input view */ |
| 39 |
– |
int gotview; /* got input view? */ |
| 40 |
– |
|
| 45 |
|
int fill = F_FORE|F_BACK; /* selected fill algorithm */ |
| 46 |
< |
extern int backfill(), calfill(); /* fill functions */ |
| 46 |
> |
extern int backfill(), rcalfill(); /* fill functions */ |
| 47 |
|
int (*deffill)() = backfill; /* selected fill function */ |
| 48 |
|
COLR backcolr = BLKCOLR; /* background color */ |
| 49 |
|
double backz = 0.0; /* background z value */ |
| 50 |
+ |
int normdist = 1; /* normalized distance? */ |
| 51 |
+ |
double ourexp = -1; /* output picture exposure */ |
| 52 |
|
|
| 53 |
+ |
VIEW theirview = STDVIEW; /* input view */ |
| 54 |
+ |
int gotview; /* got input view? */ |
| 55 |
+ |
int thresolu, tvresolu; /* input resolution */ |
| 56 |
+ |
double theirexp; /* input picture exposure */ |
| 57 |
|
double theirs2ours[4][4]; /* transformation matrix */ |
| 48 |
– |
int normdist = 1; /* normalized distance? */ |
| 58 |
|
|
| 59 |
+ |
int childpid = -1; /* id of fill process */ |
| 60 |
|
FILE *psend, *precv; /* pipes to/from fill calculation */ |
| 51 |
– |
int childpid; /* child's process id */ |
| 61 |
|
int queue[PACKSIZ][2]; /* pending pixels */ |
| 62 |
|
int queuesiz; /* number of pixels pending */ |
| 63 |
|
|
| 71 |
|
int gotvfile = 0; |
| 72 |
|
char *zfile = NULL; |
| 73 |
|
char *err; |
| 74 |
< |
int i; |
| 74 |
> |
int i, rval; |
| 75 |
|
|
| 76 |
|
progname = argv[0]; |
| 77 |
|
|
| 78 |
< |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
| 78 |
> |
for (i = 1; i < argc && argv[i][0] == '-'; i++) { |
| 79 |
> |
rval = getviewopt(&ourview, argc-i, argv+i); |
| 80 |
> |
if (rval >= 0) { |
| 81 |
> |
i += rval; |
| 82 |
> |
continue; |
| 83 |
> |
} |
| 84 |
|
switch (argv[i][1]) { |
| 85 |
|
case 't': /* threshold */ |
| 86 |
|
check(2,1); |
| 122 |
|
break; |
| 123 |
|
case 'r': /* rtrace */ |
| 124 |
|
check(3,1); |
| 125 |
< |
deffill = calfill; |
| 125 |
> |
deffill = rcalfill; |
| 126 |
|
calstart(RTCOM, argv[++i]); |
| 127 |
|
break; |
| 128 |
|
default: |
| 135 |
|
break; |
| 136 |
|
case 'x': /* x resolution */ |
| 137 |
|
check(2,1); |
| 138 |
< |
ourview.hresolu = atoi(argv[++i]); |
| 138 |
> |
hresolu = atoi(argv[++i]); |
| 139 |
|
break; |
| 140 |
|
case 'y': /* y resolution */ |
| 141 |
|
check(2,1); |
| 142 |
< |
ourview.vresolu = atoi(argv[++i]); |
| 142 |
> |
vresolu = atoi(argv[++i]); |
| 143 |
|
break; |
| 144 |
< |
case 'v': /* view */ |
| 145 |
< |
switch (argv[i][2]) { |
| 146 |
< |
case 't': /* type */ |
| 147 |
< |
check(4,0); |
| 148 |
< |
ourview.type = argv[i][3]; |
| 149 |
< |
break; |
| 136 |
< |
case 'p': /* point */ |
| 137 |
< |
check(3,3); |
| 138 |
< |
ourview.vp[0] = atof(argv[++i]); |
| 139 |
< |
ourview.vp[1] = atof(argv[++i]); |
| 140 |
< |
ourview.vp[2] = atof(argv[++i]); |
| 141 |
< |
break; |
| 142 |
< |
case 'd': /* direction */ |
| 143 |
< |
check(3,3); |
| 144 |
< |
ourview.vdir[0] = atof(argv[++i]); |
| 145 |
< |
ourview.vdir[1] = atof(argv[++i]); |
| 146 |
< |
ourview.vdir[2] = atof(argv[++i]); |
| 147 |
< |
break; |
| 148 |
< |
case 'u': /* up */ |
| 149 |
< |
check(3,3); |
| 150 |
< |
ourview.vup[0] = atof(argv[++i]); |
| 151 |
< |
ourview.vup[1] = atof(argv[++i]); |
| 152 |
< |
ourview.vup[2] = atof(argv[++i]); |
| 153 |
< |
break; |
| 154 |
< |
case 'h': /* horizontal */ |
| 155 |
< |
check(3,1); |
| 156 |
< |
ourview.horiz = atof(argv[++i]); |
| 157 |
< |
break; |
| 158 |
< |
case 'v': /* vertical */ |
| 159 |
< |
check(3,1); |
| 160 |
< |
ourview.vert = atof(argv[++i]); |
| 161 |
< |
break; |
| 162 |
< |
case 'f': /* file */ |
| 163 |
< |
check(3,1); |
| 164 |
< |
gotvfile = viewfile(argv[++i], &ourview); |
| 165 |
< |
if (gotvfile < 0) { |
| 166 |
< |
perror(argv[i]); |
| 167 |
< |
exit(1); |
| 168 |
< |
} else if (gotvfile == 0) { |
| 169 |
< |
fprintf(stderr, "%s: bad view file\n", |
| 170 |
< |
argv[i]); |
| 171 |
< |
exit(1); |
| 172 |
< |
} |
| 173 |
< |
break; |
| 174 |
< |
default: |
| 144 |
> |
case 'p': /* pixel aspect */ |
| 145 |
> |
check(2,1); |
| 146 |
> |
pixaspect = atof(argv[++i]); |
| 147 |
> |
break; |
| 148 |
> |
case 'v': /* view file */ |
| 149 |
> |
if (argv[i][2] != 'f') |
| 150 |
|
goto badopt; |
| 151 |
+ |
check(3,1); |
| 152 |
+ |
gotvfile = viewfile(argv[++i], &ourview, 0, 0); |
| 153 |
+ |
if (gotvfile < 0) { |
| 154 |
+ |
perror(argv[i]); |
| 155 |
+ |
exit(1); |
| 156 |
+ |
} else if (gotvfile == 0) { |
| 157 |
+ |
fprintf(stderr, "%s: bad view file\n", |
| 158 |
+ |
argv[i]); |
| 159 |
+ |
exit(1); |
| 160 |
|
} |
| 161 |
|
break; |
| 162 |
|
default: |
| 165 |
|
progname, argv[i]); |
| 166 |
|
goto userr; |
| 167 |
|
} |
| 168 |
+ |
} |
| 169 |
|
/* check arguments */ |
| 170 |
|
if ((argc-i)%2) |
| 171 |
|
goto userr; |
| 174 |
|
fprintf(stderr, "%s: %s\n", progname, err); |
| 175 |
|
exit(1); |
| 176 |
|
} |
| 177 |
+ |
normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu); |
| 178 |
|
/* allocate frame */ |
| 179 |
< |
ourpict = (COLR *)malloc(ourview.hresolu*ourview.vresolu*sizeof(COLR)); |
| 180 |
< |
ourzbuf = (float *)calloc(ourview.hresolu*ourview.vresolu,sizeof(float)); |
| 181 |
< |
if (ourpict == NULL || ourzbuf == NULL) { |
| 182 |
< |
perror(progname); |
| 197 |
< |
exit(1); |
| 198 |
< |
} |
| 179 |
> |
ourpict = (COLR *)malloc(hresolu*vresolu*sizeof(COLR)); |
| 180 |
> |
ourzbuf = (float *)calloc(hresolu*vresolu,sizeof(float)); |
| 181 |
> |
if (ourpict == NULL || ourzbuf == NULL) |
| 182 |
> |
syserror(); |
| 183 |
|
/* get input */ |
| 184 |
|
for ( ; i < argc; i += 2) |
| 185 |
|
addpicture(argv[i], argv[i+1]); |
| 189 |
|
else |
| 190 |
|
fillpicture(); |
| 191 |
|
/* close calculation */ |
| 192 |
< |
if (deffill == calfill) |
| 209 |
< |
caldone(); |
| 192 |
> |
caldone(); |
| 193 |
|
/* add to header */ |
| 194 |
|
printargs(argc, argv, stdout); |
| 195 |
|
if (gotvfile) { |
| 197 |
|
fprintview(&ourview, stdout); |
| 198 |
|
printf("\n"); |
| 199 |
|
} |
| 200 |
+ |
if (pixaspect < .99 || pixaspect > 1.01) |
| 201 |
+ |
fputaspect(pixaspect, stdout); |
| 202 |
+ |
if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
| 203 |
+ |
fputexpos(ourexp, stdout); |
| 204 |
|
printf("\n"); |
| 205 |
|
/* write picture */ |
| 206 |
|
writepicture(); |
| 211 |
|
exit(0); |
| 212 |
|
userr: |
| 213 |
|
fprintf(stderr, |
| 214 |
< |
"Usage: %s [view opts][-t zthresh][-z zout][-fT][-n] pfile zspec ..\n", |
| 214 |
> |
"Usage: %s [view opts][-t eps][-z zout][-fT][-n] pfile zspec ..\n", |
| 215 |
|
progname); |
| 216 |
|
exit(1); |
| 217 |
|
#undef check |
| 226 |
|
|
| 227 |
|
printf("\t%s", s); |
| 228 |
|
|
| 229 |
+ |
if (isexpos(s)) { |
| 230 |
+ |
theirexp *= exposval(s); |
| 231 |
+ |
return; |
| 232 |
+ |
} |
| 233 |
|
for (an = altname; *an != NULL; an++) |
| 234 |
|
if (!strncmp(*an, s, strlen(*an))) { |
| 235 |
< |
if (sscanview(&theirview, s+strlen(*an)) == 0) |
| 235 |
> |
if (sscanview(&theirview, s+strlen(*an)) > 0) |
| 236 |
|
gotview++; |
| 237 |
|
break; |
| 238 |
|
} |
| 243 |
|
char *pfile, *zspec; |
| 244 |
|
{ |
| 245 |
|
extern double atof(); |
| 246 |
< |
FILE *pfp, *zfp; |
| 246 |
> |
FILE *pfp; |
| 247 |
> |
int zfd; |
| 248 |
|
char *err; |
| 249 |
|
COLR *scanin; |
| 250 |
< |
float *zin, *zlast; |
| 251 |
< |
int *plast; |
| 250 |
> |
float *zin; |
| 251 |
> |
struct position *plast; |
| 252 |
|
int y; |
| 253 |
|
/* open picture file */ |
| 254 |
|
if ((pfp = fopen(pfile, "r")) == NULL) { |
| 255 |
|
perror(pfile); |
| 256 |
|
exit(1); |
| 257 |
|
} |
| 258 |
< |
/* get header and view */ |
| 259 |
< |
printf("%s:\n", pfile); |
| 258 |
> |
/* get header with exposure and view */ |
| 259 |
> |
theirexp = 1.0; |
| 260 |
|
gotview = 0; |
| 261 |
+ |
printf("%s:\n", pfile); |
| 262 |
|
getheader(pfp, headline); |
| 263 |
< |
if (!gotview || fgetresolu(&theirview.hresolu, &theirview.vresolu, pfp) |
| 263 |
> |
if (!gotview || fgetresolu(&thresolu, &tvresolu, pfp) |
| 264 |
|
!= (YMAJOR|YDECR)) { |
| 265 |
|
fprintf(stderr, "%s: picture view error\n", pfile); |
| 266 |
|
exit(1); |
| 267 |
|
} |
| 268 |
+ |
if (ourexp <= 0) |
| 269 |
+ |
ourexp = theirexp; |
| 270 |
+ |
else if (ABS(theirexp-ourexp) > .01*ourexp) |
| 271 |
+ |
fprintf(stderr, "%s: different exposure (warning)\n", pfile); |
| 272 |
|
if (err = setview(&theirview)) { |
| 273 |
|
fprintf(stderr, "%s: %s\n", pfile, err); |
| 274 |
|
exit(1); |
| 276 |
|
/* compute transformation */ |
| 277 |
|
pixform(theirs2ours, &theirview, &ourview); |
| 278 |
|
/* allocate scanlines */ |
| 279 |
< |
scanin = (COLR *)malloc(theirview.hresolu*sizeof(COLR)); |
| 280 |
< |
zin = (float *)malloc(theirview.hresolu*sizeof(float)); |
| 281 |
< |
plast = (int *)calloc(theirview.hresolu, sizeof(int)); |
| 282 |
< |
zlast = (float *)calloc(theirview.hresolu, sizeof(float)); |
| 283 |
< |
if (scanin == NULL || zin == NULL || plast == NULL || zlast == NULL) { |
| 287 |
< |
perror(progname); |
| 288 |
< |
exit(1); |
| 289 |
< |
} |
| 279 |
> |
scanin = (COLR *)malloc(thresolu*sizeof(COLR)); |
| 280 |
> |
zin = (float *)malloc(thresolu*sizeof(float)); |
| 281 |
> |
plast = (struct position *)calloc(thresolu, sizeof(struct position)); |
| 282 |
> |
if (scanin == NULL || zin == NULL || plast == NULL) |
| 283 |
> |
syserror(); |
| 284 |
|
/* get z specification or file */ |
| 285 |
< |
if ((zfp = fopen(zspec, "r")) == NULL) { |
| 285 |
> |
if ((zfd = open(zspec, O_RDONLY)) == -1) { |
| 286 |
|
double zvalue; |
| 287 |
|
register int x; |
| 288 |
|
if (!isfloat(zspec) || (zvalue = atof(zspec)) <= 0.0) { |
| 289 |
|
perror(zspec); |
| 290 |
|
exit(1); |
| 291 |
|
} |
| 292 |
< |
for (x = 0; x < theirview.hresolu; x++) |
| 292 |
> |
for (x = 0; x < thresolu; x++) |
| 293 |
|
zin[x] = zvalue; |
| 294 |
|
} |
| 295 |
|
/* load image */ |
| 296 |
< |
for (y = theirview.vresolu-1; y >= 0; y--) { |
| 297 |
< |
if (freadcolrs(scanin, theirview.hresolu, pfp) < 0) { |
| 296 |
> |
for (y = tvresolu-1; y >= 0; y--) { |
| 297 |
> |
if (freadcolrs(scanin, thresolu, pfp) < 0) { |
| 298 |
|
fprintf(stderr, "%s: read error\n", pfile); |
| 299 |
|
exit(1); |
| 300 |
|
} |
| 301 |
< |
if (zfp != NULL |
| 302 |
< |
&& fread(zin,sizeof(float),theirview.hresolu,zfp) |
| 309 |
< |
< theirview.hresolu) { |
| 301 |
> |
if (zfd != -1 && read(zfd,zin,thresolu*sizeof(float)) |
| 302 |
> |
< thresolu*sizeof(float)) { |
| 303 |
|
fprintf(stderr, "%s: read error\n", zspec); |
| 304 |
|
exit(1); |
| 305 |
|
} |
| 306 |
< |
addscanline(y, scanin, zin, plast, zlast); |
| 306 |
> |
addscanline(y, scanin, zin, plast); |
| 307 |
|
} |
| 308 |
|
/* clean up */ |
| 309 |
|
free((char *)scanin); |
| 310 |
|
free((char *)zin); |
| 311 |
|
free((char *)plast); |
| 319 |
– |
free((char *)zlast); |
| 312 |
|
fclose(pfp); |
| 313 |
< |
if (zfp != NULL) |
| 314 |
< |
fclose(zfp); |
| 313 |
> |
if (zfd != -1) |
| 314 |
> |
close(zfd); |
| 315 |
|
} |
| 316 |
|
|
| 317 |
|
|
| 322 |
|
double m4t[4][4]; |
| 323 |
|
|
| 324 |
|
setident4(xfmat); |
| 325 |
< |
xfmat[0][0] = vw1->vhinc[0]; |
| 326 |
< |
xfmat[0][1] = vw1->vhinc[1]; |
| 327 |
< |
xfmat[0][2] = vw1->vhinc[2]; |
| 328 |
< |
xfmat[1][0] = vw1->vvinc[0]; |
| 329 |
< |
xfmat[1][1] = vw1->vvinc[1]; |
| 330 |
< |
xfmat[1][2] = vw1->vvinc[2]; |
| 325 |
> |
xfmat[0][0] = vw1->hvec[0]; |
| 326 |
> |
xfmat[0][1] = vw1->hvec[1]; |
| 327 |
> |
xfmat[0][2] = vw1->hvec[2]; |
| 328 |
> |
xfmat[1][0] = vw1->vvec[0]; |
| 329 |
> |
xfmat[1][1] = vw1->vvec[1]; |
| 330 |
> |
xfmat[1][2] = vw1->vvec[2]; |
| 331 |
|
xfmat[2][0] = vw1->vdir[0]; |
| 332 |
|
xfmat[2][1] = vw1->vdir[1]; |
| 333 |
|
xfmat[2][2] = vw1->vdir[2]; |
| 335 |
|
xfmat[3][1] = vw1->vp[1]; |
| 336 |
|
xfmat[3][2] = vw1->vp[2]; |
| 337 |
|
setident4(m4t); |
| 338 |
< |
m4t[0][0] = vw2->vhinc[0]/vw2->vhn2; |
| 339 |
< |
m4t[1][0] = vw2->vhinc[1]/vw2->vhn2; |
| 340 |
< |
m4t[2][0] = vw2->vhinc[2]/vw2->vhn2; |
| 341 |
< |
m4t[3][0] = -DOT(vw2->vp,vw2->vhinc)/vw2->vhn2; |
| 342 |
< |
m4t[0][1] = vw2->vvinc[0]/vw2->vvn2; |
| 343 |
< |
m4t[1][1] = vw2->vvinc[1]/vw2->vvn2; |
| 344 |
< |
m4t[2][1] = vw2->vvinc[2]/vw2->vvn2; |
| 345 |
< |
m4t[3][1] = -DOT(vw2->vp,vw2->vvinc)/vw2->vvn2; |
| 338 |
> |
m4t[0][0] = vw2->hvec[0]/vw2->hn2; |
| 339 |
> |
m4t[1][0] = vw2->hvec[1]/vw2->hn2; |
| 340 |
> |
m4t[2][0] = vw2->hvec[2]/vw2->hn2; |
| 341 |
> |
m4t[3][0] = -DOT(vw2->vp,vw2->hvec)/vw2->hn2; |
| 342 |
> |
m4t[0][1] = vw2->vvec[0]/vw2->vn2; |
| 343 |
> |
m4t[1][1] = vw2->vvec[1]/vw2->vn2; |
| 344 |
> |
m4t[2][1] = vw2->vvec[2]/vw2->vn2; |
| 345 |
> |
m4t[3][1] = -DOT(vw2->vp,vw2->vvec)/vw2->vn2; |
| 346 |
|
m4t[0][2] = vw2->vdir[0]; |
| 347 |
|
m4t[1][2] = vw2->vdir[1]; |
| 348 |
|
m4t[2][2] = vw2->vdir[2]; |
| 351 |
|
} |
| 352 |
|
|
| 353 |
|
|
| 354 |
< |
addscanline(y, pline, zline, lasty, lastyz) /* add scanline to output */ |
| 354 |
> |
addscanline(y, pline, zline, lasty) /* add scanline to output */ |
| 355 |
|
int y; |
| 356 |
|
COLR *pline; |
| 357 |
|
float *zline; |
| 358 |
< |
int *lasty; /* input/output */ |
| 367 |
< |
float *lastyz; /* input/output */ |
| 358 |
> |
struct position *lasty; /* input/output */ |
| 359 |
|
{ |
| 360 |
|
extern double sqrt(); |
| 361 |
|
double pos[3]; |
| 362 |
< |
int lastx = 0; |
| 372 |
< |
double lastxz = 0; |
| 373 |
< |
double zt; |
| 374 |
< |
int xpos, ypos; |
| 362 |
> |
struct position lastx, newpos; |
| 363 |
|
register int x; |
| 364 |
|
|
| 365 |
< |
for (x = theirview.hresolu-1; x >= 0; x--) { |
| 366 |
< |
pos[0] = x - .5*(theirview.hresolu-1); |
| 367 |
< |
pos[1] = y - .5*(theirview.vresolu-1); |
| 365 |
> |
for (x = thresolu-1; x >= 0; x--) { |
| 366 |
> |
pos[0] = (x+.5)/thresolu + theirview.hoff - .5; |
| 367 |
> |
pos[1] = (y+.5)/tvresolu + theirview.voff - .5; |
| 368 |
|
pos[2] = zline[x]; |
| 369 |
|
if (theirview.type == VT_PER) { |
| 370 |
|
if (normdist) /* adjust for eye-ray distance */ |
| 371 |
|
pos[2] /= sqrt( 1. |
| 372 |
< |
+ pos[0]*pos[0]*theirview.vhn2 |
| 373 |
< |
+ pos[1]*pos[1]*theirview.vvn2 ); |
| 372 |
> |
+ pos[0]*pos[0]*theirview.hn2 |
| 373 |
> |
+ pos[1]*pos[1]*theirview.vn2 ); |
| 374 |
|
pos[0] *= pos[2]; |
| 375 |
|
pos[1] *= pos[2]; |
| 376 |
|
} |
| 377 |
|
multp3(pos, pos, theirs2ours); |
| 378 |
< |
if (pos[2] <= 0) |
| 378 |
> |
if (pos[2] <= 0) { |
| 379 |
> |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
| 380 |
|
continue; |
| 381 |
+ |
} |
| 382 |
|
if (ourview.type == VT_PER) { |
| 383 |
|
pos[0] /= pos[2]; |
| 384 |
|
pos[1] /= pos[2]; |
| 385 |
|
} |
| 386 |
< |
pos[0] += .5*ourview.hresolu; |
| 387 |
< |
pos[1] += .5*ourview.vresolu; |
| 388 |
< |
if (pos[0] < 0 || (xpos = pos[0]) >= ourview.hresolu |
| 389 |
< |
|| pos[1] < 0 || (ypos = pos[1]) >= ourview.vresolu) |
| 390 |
< |
continue; |
| 386 |
> |
pos[0] += .5 - ourview.hoff; |
| 387 |
> |
pos[1] += .5 - ourview.voff; |
| 388 |
> |
newpos.x = pos[0] * hresolu; |
| 389 |
> |
newpos.y = pos[1] * vresolu; |
| 390 |
> |
newpos.z = zline[x]; |
| 391 |
|
/* add pixel to our image */ |
| 392 |
< |
zt = 2.*zeps*zline[x]; |
| 393 |
< |
addpixel(xpos, ypos, |
| 394 |
< |
(fill&F_FORE && ABS(zline[x]-lastxz) <= zt) |
| 395 |
< |
? lastx - xpos : 1, |
| 396 |
< |
(fill&F_FORE && ABS(zline[x]-lastyz[x]) <= zt) |
| 397 |
< |
? lasty[x] - ypos : 1, |
| 398 |
< |
pline[x], pos[2]); |
| 399 |
< |
lastx = xpos; |
| 410 |
< |
lasty[x] = ypos; |
| 411 |
< |
lastxz = lastyz[x] = zline[x]; |
| 392 |
> |
if (pos[0] >= 0 && newpos.x < hresolu |
| 393 |
> |
&& pos[1] >= 0 && newpos.y < vresolu) { |
| 394 |
> |
addpixel(&newpos, &lastx, &lasty[x], pline[x], pos[2]); |
| 395 |
> |
lasty[x].x = lastx.x = newpos.x; |
| 396 |
> |
lasty[x].y = lastx.y = newpos.y; |
| 397 |
> |
lasty[x].z = lastx.z = newpos.z; |
| 398 |
> |
} else |
| 399 |
> |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
| 400 |
|
} |
| 401 |
|
} |
| 402 |
|
|
| 403 |
|
|
| 404 |
< |
addpixel(xstart, ystart, width, height, pix, z) /* fill in area for pixel */ |
| 405 |
< |
int xstart, ystart; |
| 418 |
< |
int width, height; |
| 404 |
> |
addpixel(p0, p1, p2, pix, z) /* fill in pixel parallelogram */ |
| 405 |
> |
struct position *p0, *p1, *p2; |
| 406 |
|
COLR pix; |
| 407 |
|
double z; |
| 408 |
|
{ |
| 409 |
< |
register int x, y; |
| 410 |
< |
/* make width and height positive */ |
| 411 |
< |
if (width < 0) { |
| 412 |
< |
width = -width; |
| 413 |
< |
xstart = xstart-width+1; |
| 414 |
< |
} else if (width == 0) |
| 415 |
< |
width = 1; |
| 416 |
< |
if (height < 0) { |
| 417 |
< |
height = -height; |
| 418 |
< |
ystart = ystart-height+1; |
| 419 |
< |
} else if (height == 0) |
| 420 |
< |
height = 1; |
| 421 |
< |
/* fill pixel(s) within rectangle */ |
| 422 |
< |
for (y = ystart; y < ystart+height; y++) |
| 423 |
< |
for (x = xstart; x < xstart+width; x++) |
| 424 |
< |
if (zscan(y)[x] <= 0 |
| 425 |
< |
|| zscan(y)[x]-z > zeps*zscan(y)[x]) { |
| 409 |
> |
double zt = 2.*zeps*p0->z; /* threshold */ |
| 410 |
> |
int s1x, s1y, s2x, s2y; /* step sizes */ |
| 411 |
> |
int l1, l2, c1, c2; /* side lengths and counters */ |
| 412 |
> |
int p1isy; /* p0p1 along y? */ |
| 413 |
> |
int x1, y1; /* p1 position */ |
| 414 |
> |
register int x, y; /* final position */ |
| 415 |
> |
|
| 416 |
> |
/* compute vector p0p1 */ |
| 417 |
> |
if (fill&F_FORE && ABS(p1->z-p0->z) <= zt) { |
| 418 |
> |
s1x = p1->x - p0->x; |
| 419 |
> |
s1y = p1->y - p0->y; |
| 420 |
> |
l1 = ABS(s1x); |
| 421 |
> |
if (p1isy = (ABS(s1y) > l1)) |
| 422 |
> |
l1 = ABS(s1y); |
| 423 |
> |
} else { |
| 424 |
> |
l1 = s1x = s1y = 1; |
| 425 |
> |
p1isy = -1; |
| 426 |
> |
} |
| 427 |
> |
/* compute vector p0p2 */ |
| 428 |
> |
if (fill&F_FORE && ABS(p2->z-p0->z) <= zt) { |
| 429 |
> |
s2x = p2->x - p0->x; |
| 430 |
> |
s2y = p2->y - p0->y; |
| 431 |
> |
if (p1isy == 1) |
| 432 |
> |
l2 = ABS(s2x); |
| 433 |
> |
else { |
| 434 |
> |
l2 = ABS(s2y); |
| 435 |
> |
if (p1isy != 0 && ABS(s2x) > l2) |
| 436 |
> |
l2 = ABS(s2x); |
| 437 |
> |
} |
| 438 |
> |
} else |
| 439 |
> |
l2 = s2x = s2y = 1; |
| 440 |
> |
/* fill the parallelogram */ |
| 441 |
> |
for (c1 = l1; c1-- > 0; ) { |
| 442 |
> |
x1 = p0->x + c1*s1x/l1; |
| 443 |
> |
y1 = p0->y + c1*s1y/l1; |
| 444 |
> |
for (c2 = l2; c2-- > 0; ) { |
| 445 |
> |
x = x1 + c2*s2x/l2; |
| 446 |
> |
y = y1 + c2*s2y/l2; |
| 447 |
> |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
| 448 |
> |
> zeps*zscan(y)[x]) { |
| 449 |
|
zscan(y)[x] = z; |
| 450 |
|
copycolr(pscan(y)[x], pix); |
| 451 |
|
} |
| 452 |
+ |
} |
| 453 |
+ |
} |
| 454 |
|
} |
| 455 |
|
|
| 456 |
|
|
| 461 |
|
COLR pfill; |
| 462 |
|
register int x, i; |
| 463 |
|
/* get back buffer */ |
| 464 |
< |
yback = (int *)malloc(ourview.hresolu*sizeof(int)); |
| 465 |
< |
if (yback == NULL) { |
| 466 |
< |
perror(progname); |
| 467 |
< |
return; |
| 456 |
< |
} |
| 457 |
< |
for (x = 0; x < ourview.hresolu; x++) |
| 464 |
> |
yback = (int *)malloc(hresolu*sizeof(int)); |
| 465 |
> |
if (yback == NULL) |
| 466 |
> |
syserror(); |
| 467 |
> |
for (x = 0; x < hresolu; x++) |
| 468 |
|
yback[x] = -2; |
| 469 |
|
/* |
| 470 |
|
* Xback and yback are the pixel locations of suitable |
| 473 |
|
* that there is no suitable background in this direction. |
| 474 |
|
*/ |
| 475 |
|
/* fill image */ |
| 476 |
< |
for (y = 0; y < ourview.vresolu; y++) { |
| 476 |
> |
for (y = 0; y < vresolu; y++) { |
| 477 |
|
xback = -2; |
| 478 |
< |
for (x = 0; x < ourview.hresolu; x++) |
| 478 |
> |
for (x = 0; x < hresolu; x++) |
| 479 |
|
if (zscan(y)[x] <= 0) { /* empty pixel */ |
| 480 |
|
/* |
| 481 |
|
* First, find background from above or below. |
| 482 |
|
* (farthest assigned pixel) |
| 483 |
|
*/ |
| 484 |
|
if (yback[x] == -2) { |
| 485 |
< |
for (i = y+1; i < ourview.vresolu; i++) |
| 485 |
> |
for (i = y+1; i < vresolu; i++) |
| 486 |
|
if (zscan(i)[x] > 0) |
| 487 |
|
break; |
| 488 |
< |
if (i < ourview.vresolu |
| 488 |
> |
if (i < vresolu |
| 489 |
|
&& (y <= 0 || zscan(y-1)[x] < zscan(i)[x])) |
| 490 |
|
yback[x] = i; |
| 491 |
|
else |
| 495 |
|
* Next, find background from left or right. |
| 496 |
|
*/ |
| 497 |
|
if (xback == -2) { |
| 498 |
< |
for (i = x+1; i < ourview.hresolu; i++) |
| 498 |
> |
for (i = x+1; i < hresolu; i++) |
| 499 |
|
if (zscan(y)[i] > 0) |
| 500 |
|
break; |
| 501 |
< |
if (i < ourview.hresolu |
| 501 |
> |
if (i < hresolu |
| 502 |
|
&& (x <= 0 || zscan(y)[x-1] < zscan(y)[i])) |
| 503 |
|
xback = i; |
| 504 |
|
else |
| 540 |
|
{ |
| 541 |
|
register int x, y; |
| 542 |
|
|
| 543 |
< |
for (y = 0; y < ourview.vresolu; y++) |
| 544 |
< |
for (x = 0; x < ourview.hresolu; x++) |
| 543 |
> |
for (y = 0; y < vresolu; y++) |
| 544 |
> |
for (x = 0; x < hresolu; x++) |
| 545 |
|
if (zscan(y)[x] <= 0) |
| 546 |
|
(*deffill)(x,y); |
| 547 |
|
} |
| 551 |
|
{ |
| 552 |
|
int y; |
| 553 |
|
|
| 554 |
< |
fputresolu(YMAJOR|YDECR, ourview.hresolu, ourview.vresolu, stdout); |
| 555 |
< |
for (y = ourview.vresolu-1; y >= 0; y--) |
| 556 |
< |
if (fwritecolrs(pscan(y), ourview.hresolu, stdout) < 0) { |
| 557 |
< |
perror(progname); |
| 548 |
< |
exit(1); |
| 549 |
< |
} |
| 554 |
> |
fputresolu(YMAJOR|YDECR, hresolu, vresolu, stdout); |
| 555 |
> |
for (y = vresolu-1; y >= 0; y--) |
| 556 |
> |
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
| 557 |
> |
syserror(); |
| 558 |
|
} |
| 559 |
|
|
| 560 |
|
|
| 563 |
|
{ |
| 564 |
|
extern double sqrt(); |
| 565 |
|
int donorm = normdist && ourview.type == VT_PER; |
| 566 |
< |
FILE *fp; |
| 566 |
> |
int fd; |
| 567 |
|
int y; |
| 568 |
|
float *zout; |
| 569 |
|
|
| 570 |
< |
if ((fp = fopen(fname, "w")) == NULL) { |
| 570 |
> |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) { |
| 571 |
|
perror(fname); |
| 572 |
|
exit(1); |
| 573 |
|
} |
| 574 |
|
if (donorm |
| 575 |
< |
&& (zout = (float *)malloc(ourview.hresolu*sizeof(float))) == NULL) { |
| 576 |
< |
perror(progname); |
| 577 |
< |
exit(1); |
| 570 |
< |
} |
| 571 |
< |
for (y = ourview.vresolu-1; y >= 0; y--) { |
| 575 |
> |
&& (zout = (float *)malloc(hresolu*sizeof(float))) == NULL) |
| 576 |
> |
syserror(); |
| 577 |
> |
for (y = vresolu-1; y >= 0; y--) { |
| 578 |
|
if (donorm) { |
| 579 |
|
double vx, yzn2; |
| 580 |
|
register int x; |
| 581 |
< |
yzn2 = y - .5*(ourview.vresolu-1); |
| 582 |
< |
yzn2 = 1. + yzn2*yzn2*ourview.vvn2; |
| 583 |
< |
for (x = 0; x < ourview.hresolu; x++) { |
| 584 |
< |
vx = x - .5*(ourview.hresolu-1); |
| 581 |
> |
yzn2 = y - .5*(vresolu-1); |
| 582 |
> |
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
| 583 |
> |
for (x = 0; x < hresolu; x++) { |
| 584 |
> |
vx = x - .5*(hresolu-1); |
| 585 |
|
zout[x] = zscan(y)[x] |
| 586 |
< |
* sqrt(vx*vx*ourview.vhn2 + yzn2); |
| 586 |
> |
* sqrt(vx*vx*ourview.hn2 + yzn2); |
| 587 |
|
} |
| 588 |
|
} else |
| 589 |
|
zout = zscan(y); |
| 590 |
< |
if (fwrite(zout, sizeof(float), ourview.hresolu, fp) |
| 591 |
< |
< ourview.hresolu) { |
| 590 |
> |
if (write(fd, zout, hresolu*sizeof(float)) |
| 591 |
> |
< hresolu*sizeof(float)) { |
| 592 |
|
perror(fname); |
| 593 |
|
exit(1); |
| 594 |
|
} |
| 595 |
|
} |
| 596 |
|
if (donorm) |
| 597 |
|
free((char *)zout); |
| 598 |
< |
fclose(fp); |
| 598 |
> |
close(fd); |
| 599 |
|
} |
| 600 |
|
|
| 601 |
|
|
| 626 |
|
char combuf[512]; |
| 627 |
|
int p0[2], p1[2]; |
| 628 |
|
|
| 629 |
+ |
if (childpid != -1) { |
| 630 |
+ |
fprintf(stderr, "%s: too many calculations\n", progname); |
| 631 |
+ |
exit(1); |
| 632 |
+ |
} |
| 633 |
|
sprintf(combuf, prog, PACKSIZ, args); |
| 634 |
|
if (pipe(p0) < 0 || pipe(p1) < 0) |
| 635 |
< |
goto syserr; |
| 635 |
> |
syserror(); |
| 636 |
|
if ((childpid = vfork()) == 0) { /* fork calculation */ |
| 637 |
|
close(p0[1]); |
| 638 |
|
close(p1[0]); |
| 648 |
|
perror("/bin/sh"); |
| 649 |
|
_exit(127); |
| 650 |
|
} |
| 651 |
< |
if (childpid < 0) |
| 652 |
< |
goto syserr; |
| 651 |
> |
if (childpid == -1) |
| 652 |
> |
syserror(); |
| 653 |
|
close(p0[0]); |
| 654 |
|
close(p1[1]); |
| 655 |
|
if ((psend = fdopen(p0[1], "w")) == NULL) |
| 656 |
< |
goto syserr; |
| 656 |
> |
syserror(); |
| 657 |
|
if ((precv = fdopen(p1[0], "r")) == NULL) |
| 658 |
< |
goto syserr; |
| 658 |
> |
syserror(); |
| 659 |
|
queuesiz = 0; |
| 650 |
– |
return; |
| 651 |
– |
syserr: |
| 652 |
– |
perror(progname); |
| 653 |
– |
exit(1); |
| 660 |
|
} |
| 661 |
|
|
| 662 |
|
|
| 664 |
|
{ |
| 665 |
|
int pid; |
| 666 |
|
|
| 667 |
< |
fclose(psend); |
| 667 |
> |
if (childpid == -1) |
| 668 |
> |
return; |
| 669 |
> |
if (fclose(psend) == EOF) |
| 670 |
> |
syserror(); |
| 671 |
|
clearqueue(); |
| 672 |
|
fclose(precv); |
| 673 |
|
while ((pid = wait(0)) != -1 && pid != childpid) |
| 674 |
|
; |
| 675 |
+ |
childpid = -1; |
| 676 |
|
} |
| 677 |
|
|
| 678 |
|
|
| 679 |
< |
calfill(x, y) /* fill with calculated pixel */ |
| 679 |
> |
rcalfill(x, y) /* fill with ray-calculated pixel */ |
| 680 |
|
int x, y; |
| 681 |
|
{ |
| 682 |
|
FVECT orig, dir; |
| 683 |
|
float outbuf[6]; |
| 684 |
|
|
| 685 |
|
if (queuesiz >= PACKSIZ) { /* flush queue */ |
| 686 |
< |
fflush(psend); |
| 686 |
> |
if (fflush(psend) == EOF) |
| 687 |
> |
syserror(); |
| 688 |
|
clearqueue(); |
| 689 |
|
} |
| 690 |
|
/* send new ray */ |
| 691 |
< |
rayview(orig, dir, &ourview, x+.5, y+.5); |
| 691 |
> |
viewray(orig, dir, &ourview, (x+.5)/hresolu, (y+.5)/vresolu); |
| 692 |
|
outbuf[0] = orig[0]; outbuf[1] = orig[1]; outbuf[2] = orig[2]; |
| 693 |
|
outbuf[3] = dir[0]; outbuf[4] = dir[1]; outbuf[5] = dir[2]; |
| 694 |
< |
fwrite(outbuf, sizeof(float), 6, psend); |
| 694 |
> |
if (fwrite(outbuf, sizeof(float), 6, psend) < 6) |
| 695 |
> |
syserror(); |
| 696 |
|
/* remember it */ |
| 697 |
|
queue[queuesiz][0] = x; |
| 698 |
|
queue[queuesiz][1] = y; |
| 706 |
|
register int i; |
| 707 |
|
|
| 708 |
|
for (i = 0; i < queuesiz; i++) { |
| 709 |
< |
fread(inbuf, sizeof(float), 4, precv); |
| 709 |
> |
if (fread(inbuf, sizeof(float), 4, precv) < 4) { |
| 710 |
> |
fprintf(stderr, "%s: read error in clearqueue\n", |
| 711 |
> |
progname); |
| 712 |
> |
exit(1); |
| 713 |
> |
} |
| 714 |
> |
if (ourexp > 0 && ourexp != 1.0) { |
| 715 |
> |
inbuf[0] *= ourexp; |
| 716 |
> |
inbuf[1] *= ourexp; |
| 717 |
> |
inbuf[2] *= ourexp; |
| 718 |
> |
} |
| 719 |
|
setcolr(pscan(queue[i][1])[queue[i][0]], |
| 720 |
|
inbuf[0], inbuf[1], inbuf[2]); |
| 721 |
|
zscan(queue[i][1])[queue[i][0]] = inbuf[3]; |
| 722 |
|
} |
| 723 |
|
queuesiz = 0; |
| 724 |
+ |
} |
| 725 |
+ |
|
| 726 |
+ |
|
| 727 |
+ |
syserror() /* report error and exit */ |
| 728 |
+ |
{ |
| 729 |
+ |
perror(progname); |
| 730 |
+ |
exit(1); |
| 731 |
|
} |