| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rhcopy.c,v 3.33 2019/11/07 23:17:58 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* Copy data into a holodeck file |
| 6 |
*/ |
| 7 |
|
| 8 |
#include "platform.h" |
| 9 |
#include "rterror.h" |
| 10 |
#include "holo.h" |
| 11 |
#include "view.h" |
| 12 |
|
| 13 |
#ifndef BKBSIZE |
| 14 |
#define BKBSIZE 256 /* beam clump size (kilobytes) */ |
| 15 |
#endif |
| 16 |
/* possible operations */ |
| 17 |
#define FROM_HOLO 1 /* copy between holodecks */ |
| 18 |
#define FROM_PICZ 2 /* copy from HDR + depth to holodeck */ |
| 19 |
#define FROM_STDIN 3 /* copy from stdin to holodeck */ |
| 20 |
#define TO_STDOUT 4 /* copy rays from holodeck to stdout */ |
| 21 |
|
| 22 |
int operation = 0; /* what we are doing */ |
| 23 |
char *rspec = ""; /* ray details for i/o */ |
| 24 |
int checkdepth = 1; /* check depth (!-d option)? */ |
| 25 |
int checkrepeats = 0; /* check for repeats (-u option)? */ |
| 26 |
int nholosects; /* number of original holodeck sections */ |
| 27 |
int iofmt = 'a'; /* input/output format for rays */ |
| 28 |
|
| 29 |
/* holodeck flags */ |
| 30 |
#define H_BADF 01 /* bad format */ |
| 31 |
#define H_OBST 02 /* OBSTRUCTIONS= True */ |
| 32 |
#define H_OBSF 04 /* OBSTRUCTIONS= False */ |
| 33 |
#define H_VDST 010 /* VDISTANCE= True */ |
| 34 |
#define H_SWAP 020 /* byte order is different */ |
| 35 |
|
| 36 |
char *progname; /* global argv[0] */ |
| 37 |
|
| 38 |
struct phead { |
| 39 |
VIEW vw; |
| 40 |
double expos; |
| 41 |
short gotview; |
| 42 |
short badfmt; |
| 43 |
short altprims; |
| 44 |
}; |
| 45 |
|
| 46 |
typedef struct { |
| 47 |
FVECT ro; |
| 48 |
FVECT rd; |
| 49 |
RREAL d; |
| 50 |
COLR cv; |
| 51 |
} RAYPAR; |
| 52 |
|
| 53 |
static int openholo(char *fname, int append); |
| 54 |
static void addray(RAYPAR *rp); |
| 55 |
static int readval(RREAL *v, int n, FILE *fp); |
| 56 |
static void readrays(FILE *fp); |
| 57 |
static int writeval(RREAL *v, int n, FILE *fp); |
| 58 |
static int write_ray(RAYPAR *rp, FILE *fp); |
| 59 |
static void writerays(FILE *fp); |
| 60 |
static gethfunc holheadline; |
| 61 |
static int bpcmp(const void *b1p, const void *b2p); |
| 62 |
static int addclump(HOLO *hp, int *bq, int nb); |
| 63 |
static void addholo(char *hdf); |
| 64 |
static gethfunc picheadline; |
| 65 |
static void addpicz(char *pcf, char *zbf); |
| 66 |
|
| 67 |
|
| 68 |
int |
| 69 |
main( |
| 70 |
int argc, |
| 71 |
char *argv[] |
| 72 |
) |
| 73 |
{ |
| 74 |
int i; |
| 75 |
|
| 76 |
progname = argv[0]; |
| 77 |
for (i = 2; i < argc && argv[i][0] == '-'; i++) |
| 78 |
switch (argv[i][1]) { |
| 79 |
case 'u': |
| 80 |
checkrepeats = 1; |
| 81 |
break; |
| 82 |
case 'd': |
| 83 |
checkdepth = 0; |
| 84 |
break; |
| 85 |
case 'f': |
| 86 |
iofmt = argv[i][2]; |
| 87 |
if (!strchr("afd", iofmt)) |
| 88 |
error(USER, "-f? i/o format must be 'a', 'f', or 'd'"); |
| 89 |
break; |
| 90 |
case 'h': |
| 91 |
operation = FROM_HOLO; |
| 92 |
break; |
| 93 |
case 'p': |
| 94 |
operation = FROM_PICZ; |
| 95 |
break; |
| 96 |
case 'i': |
| 97 |
operation = FROM_STDIN; |
| 98 |
rspec = argv[i]+2; |
| 99 |
break; |
| 100 |
case 'o': |
| 101 |
operation = TO_STDOUT; |
| 102 |
rspec = argv[i]+2; |
| 103 |
break; |
| 104 |
default: |
| 105 |
goto userr; |
| 106 |
} |
| 107 |
if (!operation | (i > argc-((operation==FROM_HOLO)|(operation==FROM_PICZ)))) |
| 108 |
goto userr; |
| 109 |
if (operation == FROM_PICZ && (argc-i)%2) |
| 110 |
goto userr; |
| 111 |
nholosects = openholo(argv[1], (operation != TO_STDOUT)); |
| 112 |
/* check requested i/o is compatible */ |
| 113 |
if (strchr(rspec, 'l') && !(*(int *)hdlist[0]->priv & H_VDST)) |
| 114 |
error(USER, "i/o parameter 'l' incompatible with VDISTANCE=False"); |
| 115 |
if (strchr(rspec, 'L') && *(int *)hdlist[0]->priv & H_VDST) |
| 116 |
error(USER, "i/o parameter 'L' incompatible with VDISTANCE=True"); |
| 117 |
|
| 118 |
switch (operation) { /* perform requested operation */ |
| 119 |
case FROM_PICZ: |
| 120 |
for ( ; i < argc; i += 2) |
| 121 |
addpicz(argv[i], argv[i+1]); |
| 122 |
break; |
| 123 |
case FROM_HOLO: |
| 124 |
if (BKBSIZE*1024*1.5 > hdcachesize) |
| 125 |
hdcachesize = BKBSIZE*1024*1.5; |
| 126 |
for ( ; i < argc; i++) |
| 127 |
addholo(argv[i]); |
| 128 |
break; |
| 129 |
case FROM_STDIN: |
| 130 |
readrays(stdin); |
| 131 |
break; |
| 132 |
case TO_STDOUT: |
| 133 |
writerays(stdout); |
| 134 |
break; |
| 135 |
} |
| 136 |
quit(0); |
| 137 |
userr: |
| 138 |
fprintf(stderr, "Usage: %s dest.hdk [-u][-d] -h inp1.hdk ..\n", |
| 139 |
progname); |
| 140 |
fprintf(stderr, " Or: %s dest.hdk [-u][-d] -p inp1.hdr inp1.zbf ..\n", |
| 141 |
progname); |
| 142 |
fprintf(stderr, " Or: %s dest.hdk [-f{a|f|d}][-u][-d] -i[odplLv]\n", |
| 143 |
progname); |
| 144 |
fprintf(stderr, " Or: %s src.hdk [-f{a|f|d}] -o[odplLv] ..\n", |
| 145 |
progname); |
| 146 |
exit(1); |
| 147 |
} |
| 148 |
|
| 149 |
static int |
| 150 |
holheadline( /* check holodeck header line */ |
| 151 |
char *s, |
| 152 |
void *vhf |
| 153 |
) |
| 154 |
{ |
| 155 |
int be; |
| 156 |
char fmt[MAXFMTLEN]; |
| 157 |
int *hf = (int *)vhf; |
| 158 |
|
| 159 |
if (formatval(fmt, s)) { |
| 160 |
if (strcmp(fmt, HOLOFMT)) |
| 161 |
*hf |= H_BADF; |
| 162 |
else |
| 163 |
*hf &= ~H_BADF; |
| 164 |
return(0); |
| 165 |
} |
| 166 |
if (!strncmp(s, "OBSTRUCTIONS=", 13)) { |
| 167 |
s += 13; |
| 168 |
while (*s == ' ') s++; |
| 169 |
if ((*s == 't') | (*s == 'T')) |
| 170 |
*hf |= H_OBST; |
| 171 |
else if ((*s == 'f') | (*s == 'F')) |
| 172 |
*hf |= H_OBSF; |
| 173 |
else |
| 174 |
error(WARNING, "bad OBSTRUCTIONS value in holodeck"); |
| 175 |
return(0); |
| 176 |
} |
| 177 |
if (!strncmp(s, "VDISTANCE=", 10)) { |
| 178 |
s += 10; |
| 179 |
while (*s == ' ') s++; |
| 180 |
if ((*s == 't') | (*s == 'T')) |
| 181 |
*hf |= H_VDST; |
| 182 |
else if ((*s != 'f') % (*s != 'F')) |
| 183 |
error(WARNING, "bad VDISTANCE value in holodeck"); |
| 184 |
return(0); |
| 185 |
} |
| 186 |
if ((be = isbigendian(s)) >= 0) { |
| 187 |
if (be != nativebigendian()) |
| 188 |
*hf |= H_SWAP; |
| 189 |
return(0); |
| 190 |
} |
| 191 |
return(0); |
| 192 |
} |
| 193 |
|
| 194 |
int |
| 195 |
openholo( /* open existing holodeck file for i/o */ |
| 196 |
char *fname, |
| 197 |
int append |
| 198 |
) |
| 199 |
{ |
| 200 |
FILE *fp; |
| 201 |
int fd; |
| 202 |
int hflags = 0; |
| 203 |
int *hfstore; |
| 204 |
off_t nextloc; |
| 205 |
int n; |
| 206 |
/* open holodeck file */ |
| 207 |
if ((fp = fopen(fname, append ? "rb+" : "rb")) == NULL) { |
| 208 |
sprintf(errmsg, "cannot open \"%s\" for %s", fname, |
| 209 |
append ? "appending" : "reading"); |
| 210 |
error(SYSTEM, errmsg); |
| 211 |
} |
| 212 |
/* check header and magic number */ |
| 213 |
if (getheader(fp, holheadline, &hflags) < 0 || |
| 214 |
hflags&(H_BADF|H_SWAP) || getw(fp) != HOLOMAGIC) { |
| 215 |
sprintf(errmsg, "holodeck \"%s\" not in expected format", fname); |
| 216 |
error(USER, errmsg); |
| 217 |
} |
| 218 |
fd = dup(fileno(fp)); /* dup file handle */ |
| 219 |
nextloc = ftell(fp); /* get stdio position */ |
| 220 |
fclose(fp); /* done with stdio */ |
| 221 |
hfstore = (int *)malloc(sizeof(int)); /* tiny memory leak but who cares? */ |
| 222 |
*hfstore = hflags; |
| 223 |
for (n = 0; nextloc > 0L; n++) { /* initialize each section */ |
| 224 |
lseek(fd, nextloc, SEEK_SET); |
| 225 |
read(fd, (char *)&nextloc, sizeof(nextloc)); |
| 226 |
hdinit(fd, NULL)->priv = hfstore; |
| 227 |
} |
| 228 |
return(n); |
| 229 |
} |
| 230 |
|
| 231 |
void |
| 232 |
addray( /* add a ray to our output holodeck */ |
| 233 |
RAYPAR *rp |
| 234 |
) |
| 235 |
{ |
| 236 |
int sn, bi, n; |
| 237 |
HOLO *hp; |
| 238 |
GCOORD gc[2]; |
| 239 |
uby8 rr[2][2]; |
| 240 |
BEAM *bp; |
| 241 |
double d0, d1; |
| 242 |
unsigned dc; |
| 243 |
RAYVAL *rv; |
| 244 |
/* check each output section */ |
| 245 |
for (sn = nholosects; sn--; ) { |
| 246 |
hp = hdlist[sn]; |
| 247 |
d0 = hdinter(gc, rr, &d1, hp, rp->ro, rp->rd); |
| 248 |
if (rp->d <= d0 || d1 < -0.001) |
| 249 |
continue; /* missed section */ |
| 250 |
if (checkdepth) { /* check depth */ |
| 251 |
if (*(int *)hp->priv & H_OBST && d0 < -0.001) |
| 252 |
continue; /* ray starts too late */ |
| 253 |
if (*(int *)hp->priv & H_OBSF && rp->d < 0.999*d1) |
| 254 |
continue; /* ray ends too soon */ |
| 255 |
} |
| 256 |
dc = hdcode(hp, rp->d-d0); |
| 257 |
bi = hdbindex(hp, gc); /* check for duplicates */ |
| 258 |
if (checkrepeats && (bp = hdgetbeam(hp, bi)) != NULL) { |
| 259 |
for (n = bp->nrm, rv = hdbray(bp); n--; rv++) |
| 260 |
if ((rv->d == dc || *(int *)hp->priv & (H_OBST|H_OBSF)) && |
| 261 |
rv->r[0][0] == rr[0][0] && |
| 262 |
rv->r[0][1] == rr[0][1] && |
| 263 |
rv->r[1][0] == rr[1][0] && |
| 264 |
rv->r[1][1] == rr[1][1]) |
| 265 |
break; |
| 266 |
if (n >= 0) |
| 267 |
continue; /* found a matching ray */ |
| 268 |
} |
| 269 |
rv = hdnewrays(hp, bi, 1); |
| 270 |
rv->d = dc; |
| 271 |
rv->r[0][0] = rr[0][0]; rv->r[0][1] = rr[0][1]; |
| 272 |
rv->r[1][0] = rr[1][0]; rv->r[1][1] = rr[1][1]; |
| 273 |
copycolr(rv->v, rp->cv); |
| 274 |
} |
| 275 |
} |
| 276 |
|
| 277 |
/* Read n-vector from file stream */ |
| 278 |
static int |
| 279 |
readval(RREAL *v, int n, FILE *fp) |
| 280 |
{ |
| 281 |
int i; |
| 282 |
#ifdef SMLFLT |
| 283 |
double vd[3]; |
| 284 |
switch (iofmt) { |
| 285 |
case 'f': |
| 286 |
return getbinary(v, sizeof(float), n, fp); |
| 287 |
case 'd': |
| 288 |
n = getbinary(vd, sizeof(double), n, fp); |
| 289 |
for (i = n; i-- > 0; ) v[i] = vd[i]; |
| 290 |
return n; |
| 291 |
case 'a': |
| 292 |
for (i = 0; i < n; i++) |
| 293 |
if (fscanf(fp, "%f ", &v[i]) != 1) |
| 294 |
break; |
| 295 |
return i; |
| 296 |
} |
| 297 |
#else |
| 298 |
float vf[3]; |
| 299 |
switch (iofmt) { |
| 300 |
case 'd': |
| 301 |
return getbinary(v, sizeof(double), n, fp); |
| 302 |
case 'f': |
| 303 |
n = getbinary(vf, sizeof(float), n, fp); |
| 304 |
for (i = n; i-- > 0; ) v[i] = vf[i]; |
| 305 |
return n; |
| 306 |
case 'a': |
| 307 |
for (i = 0; i < n; i++) |
| 308 |
if (fscanf(fp, "%lf ", &v[i]) != 1) |
| 309 |
break; |
| 310 |
return i; |
| 311 |
} |
| 312 |
#endif |
| 313 |
return -1; |
| 314 |
} |
| 315 |
|
| 316 |
#define GOT_ORG 0x01 |
| 317 |
#define GOT_DIR 0x02 |
| 318 |
#define GOT_LEN 0x04 |
| 319 |
#define GOT_VAL 0x10 |
| 320 |
#define ALSO_POS 0x20 |
| 321 |
#define BAD_DIR 0x40 |
| 322 |
#define BAD_LEN 0x80 |
| 323 |
|
| 324 |
/* Read rays from stream and add to holodeck */ |
| 325 |
static void |
| 326 |
readrays(FILE *fp) |
| 327 |
{ |
| 328 |
if (iofmt != 'a') |
| 329 |
SET_FILE_BINARY(fp); |
| 330 |
#ifdef getc_unlocked |
| 331 |
flockfile(fp); |
| 332 |
#endif |
| 333 |
while (!feof(fp)) { /* read entirety of input */ |
| 334 |
RAYPAR ryp; |
| 335 |
FVECT pos; |
| 336 |
FVECT col; |
| 337 |
int flags = 0; |
| 338 |
int i; |
| 339 |
for (i = 0; rspec[i]; i++) { |
| 340 |
switch (rspec[i]) { |
| 341 |
case 'o': /* ray origin */ |
| 342 |
if (readval(ryp.ro, 3, fp) < 3) |
| 343 |
break; |
| 344 |
flags |= GOT_ORG; |
| 345 |
continue; |
| 346 |
case 'd': /* ray direction */ |
| 347 |
if (readval(ryp.rd, 3, fp) < 3) |
| 348 |
break; |
| 349 |
if (normalize(ryp.rd) == 0) |
| 350 |
flags |= BAD_DIR; |
| 351 |
else |
| 352 |
flags |= GOT_DIR; |
| 353 |
continue; |
| 354 |
case 'p': /* ray intersection */ |
| 355 |
if (readval(pos, 3, fp) < 3) |
| 356 |
break; |
| 357 |
flags |= ALSO_POS; |
| 358 |
continue; |
| 359 |
case 'L': /* ray first length */ |
| 360 |
case 'l': /* ray virtual length */ |
| 361 |
if (readval(&ryp.d, 1, fp) < 1) |
| 362 |
break; |
| 363 |
if (ryp.d <= FTINY) |
| 364 |
flags |= BAD_LEN; |
| 365 |
else |
| 366 |
flags |= GOT_LEN; |
| 367 |
continue; |
| 368 |
case 'v': /* ray value */ |
| 369 |
if (readval(col, 3, fp) < 3) |
| 370 |
break; |
| 371 |
setcolr(ryp.cv, col[0], col[1], col[2]); |
| 372 |
flags |= GOT_VAL; |
| 373 |
continue; |
| 374 |
default: |
| 375 |
sprintf(errmsg, "unsupported parameter '%c' in -i%s", |
| 376 |
rspec[i], rspec); |
| 377 |
error(USER, errmsg); |
| 378 |
} |
| 379 |
if (!flags) /* got nothing, so may be normal EOF */ |
| 380 |
return; |
| 381 |
} |
| 382 |
if (flags & (BAD_DIR|BAD_LEN)) |
| 383 |
continue; /* just a bad ray is all -- skip */ |
| 384 |
if (!(flags & GOT_VAL)) |
| 385 |
goto missingData; |
| 386 |
if ((flags & (GOT_ORG|GOT_DIR|GOT_LEN)) != (GOT_ORG|GOT_DIR|GOT_LEN)) { |
| 387 |
if (!(flags & ALSO_POS)) |
| 388 |
goto missingData; |
| 389 |
if (flags & GOT_ORG) { |
| 390 |
VSUB(ryp.rd, pos, ryp.ro); |
| 391 |
ryp.d = normalize(ryp.rd); |
| 392 |
if (ryp.d == 0) |
| 393 |
continue; |
| 394 |
} else if ((flags & (GOT_DIR|GOT_LEN)) == (GOT_DIR|GOT_LEN)) { |
| 395 |
VSUM(ryp.ro, pos, ryp.rd, -ryp.d); |
| 396 |
} else |
| 397 |
goto missingData; |
| 398 |
} |
| 399 |
addray(&ryp); /* add our ray to holodeck */ |
| 400 |
} |
| 401 |
return; |
| 402 |
missingData: |
| 403 |
sprintf(errmsg, "insufficient data in -i%s", rspec); |
| 404 |
error(USER, errmsg); |
| 405 |
} |
| 406 |
|
| 407 |
/* Write vector value to file stream */ |
| 408 |
static int |
| 409 |
writeval(RREAL *v, int n, FILE *fp) |
| 410 |
{ |
| 411 |
int i; |
| 412 |
|
| 413 |
if (iofmt == 'a') { |
| 414 |
for (i = 0; i < n; i++) |
| 415 |
if (fprintf(fp, "\t%.4e", v[i]) < 0) |
| 416 |
break; |
| 417 |
return i; |
| 418 |
} |
| 419 |
#ifdef SMLFLT |
| 420 |
if (iofmt == 'd') { |
| 421 |
double vd[3]; |
| 422 |
for (i = n; i--; ) vd[i] = v[i]; |
| 423 |
return putbinary(vd, sizeof(double), n, fp); |
| 424 |
} |
| 425 |
#else |
| 426 |
if (iofmt == 'f') { |
| 427 |
float vf[3]; |
| 428 |
for (i = n; i--; ) vf[i] = v[i]; |
| 429 |
return putbinary(vf, sizeof(float), n, fp); |
| 430 |
} |
| 431 |
#endif |
| 432 |
return putbinary(v, sizeof(*v), n, fp); |
| 433 |
} |
| 434 |
|
| 435 |
/* Write out an individual ray as requested */ |
| 436 |
static int |
| 437 |
write_ray(RAYPAR *rp, FILE *fp) |
| 438 |
{ |
| 439 |
COLOR cval; |
| 440 |
FVECT v3; |
| 441 |
char *typ = rspec; |
| 442 |
|
| 443 |
for ( ; ; ) { |
| 444 |
switch (*typ++) { |
| 445 |
case 'o': /* ray origin */ |
| 446 |
if (writeval(rp->ro, 3, fp) < 3) |
| 447 |
break; |
| 448 |
continue; |
| 449 |
case 'd': /* ray direction */ |
| 450 |
if (writeval(rp->rd, 3, fp) < 3) |
| 451 |
break; |
| 452 |
continue; |
| 453 |
case 'p': /* ray intersection */ |
| 454 |
VSUM(v3, rp->ro, rp->rd, rp->d); |
| 455 |
if (writeval(v3, 3, fp) < 3) |
| 456 |
break; |
| 457 |
continue; |
| 458 |
case 'L': /* ray first length */ |
| 459 |
case 'l': /* ray virtual length */ |
| 460 |
if (writeval(&rp->d, 1, fp) < 1) |
| 461 |
break; |
| 462 |
continue; |
| 463 |
case 'v': /* ray value */ |
| 464 |
colr_color(cval, rp->cv); |
| 465 |
VCOPY(v3, cval); |
| 466 |
if (writeval(v3, 3, fp) < 3) |
| 467 |
break; |
| 468 |
continue; |
| 469 |
case '\0': /* end of spec -- success */ |
| 470 |
if (iofmt == 'a') |
| 471 |
fputc('\n', fp); |
| 472 |
return(1); |
| 473 |
default: |
| 474 |
sprintf(errmsg, "unsupported parameter '%c' in -o%s", typ[-1], rspec); |
| 475 |
} |
| 476 |
break; /* land here on error */ |
| 477 |
} |
| 478 |
return 0; /* write error? */ |
| 479 |
} |
| 480 |
|
| 481 |
/* Write all rays from holodeck to stream */ |
| 482 |
static void |
| 483 |
writerays(FILE *fp) |
| 484 |
{ |
| 485 |
int sn, bi, k; |
| 486 |
GCOORD gc[2]; |
| 487 |
RAYVAL *rv; |
| 488 |
RAYPAR ryp; |
| 489 |
|
| 490 |
if (!*rspec) { |
| 491 |
error(WARNING, "empty -o* output spec, quitting"); |
| 492 |
return; |
| 493 |
} |
| 494 |
if (iofmt != 'a') |
| 495 |
SET_FILE_BINARY(fp); |
| 496 |
#ifdef getc_unlocked |
| 497 |
flockfile(fp); |
| 498 |
#endif |
| 499 |
for (sn = 0; sn < nholosects; sn++) { /* write each holodeck section */ |
| 500 |
HOLO *hp = hdlist[sn]; |
| 501 |
for (bi = nbeams(hp); bi > 0; bi--) { |
| 502 |
BEAM *bp = hdgetbeam(hp, bi); |
| 503 |
if (!bp) /* empty beam? */ |
| 504 |
continue; |
| 505 |
hdbcoord(gc, hp, bi); /* else write rays */ |
| 506 |
rv = hdbray(bp); |
| 507 |
for (k = bp->nrm; k--; rv++) { |
| 508 |
ryp.d = hdray(ryp.ro, ryp.rd, hp, gc, rv->r); |
| 509 |
if (*(int *)hp->priv & H_OBSF) |
| 510 |
VSUM(ryp.ro, ryp.ro, ryp.rd, ryp.d); |
| 511 |
else |
| 512 |
ryp.d = 0.; |
| 513 |
ryp.d = hddepth(hp, rv->d) - ryp.d; |
| 514 |
copycolr(ryp.cv, rv->v); |
| 515 |
if (!write_ray(&ryp, fp)) |
| 516 |
goto writError; |
| 517 |
} |
| 518 |
hdfreebeam(hp, bi); |
| 519 |
} |
| 520 |
} |
| 521 |
if (fflush(fp) != EOF) |
| 522 |
return; |
| 523 |
writError: |
| 524 |
error(SYSTEM, "error writing holodeck rays"); |
| 525 |
} |
| 526 |
|
| 527 |
static BEAMI *beamdir; |
| 528 |
|
| 529 |
static int |
| 530 |
bpcmp( /* compare beam positions on disk */ |
| 531 |
const void *b1p, |
| 532 |
const void *b2p |
| 533 |
) |
| 534 |
{ |
| 535 |
off_t pdif = beamdir[*(int*)b1p].fo - beamdir[*(int*)b2p].fo; |
| 536 |
|
| 537 |
if (pdif > 0L) return(1); |
| 538 |
if (pdif < 0L) return(-1); |
| 539 |
return(0); |
| 540 |
} |
| 541 |
|
| 542 |
static int |
| 543 |
addclump( /* transfer the given clump and free */ |
| 544 |
HOLO *hp, |
| 545 |
int *bq, |
| 546 |
int nb |
| 547 |
) |
| 548 |
{ |
| 549 |
GCOORD gc[2]; |
| 550 |
RAYPAR ryp; |
| 551 |
RAYVAL *rv; |
| 552 |
int i; |
| 553 |
int k; |
| 554 |
BEAM *bp; |
| 555 |
/* sort based on file position */ |
| 556 |
beamdir = hp->bi; |
| 557 |
qsort((char *)bq, nb, sizeof(*bq), bpcmp); |
| 558 |
/* transfer each beam */ |
| 559 |
for (i = 0; i < nb; i++) { |
| 560 |
bp = hdgetbeam(hp, bq[i]); |
| 561 |
hdbcoord(gc, hp, bq[i]); |
| 562 |
rv = hdbray(bp); /* add each ray to output */ |
| 563 |
for (k = bp->nrm; k--; rv++) { |
| 564 |
ryp.d = hdray(ryp.ro, ryp.rd, hp, gc, rv->r); |
| 565 |
if (*(int *)hp->priv & H_OBSF) |
| 566 |
VSUM(ryp.ro, ryp.ro, ryp.rd, ryp.d); |
| 567 |
else |
| 568 |
ryp.d = 0.; |
| 569 |
ryp.d = hddepth(hp, rv->d) - ryp.d; |
| 570 |
copycolr(ryp.cv, rv->v); |
| 571 |
addray(&ryp); |
| 572 |
} |
| 573 |
hdfreebeam(hp, bq[i]); /* free the beam */ |
| 574 |
} |
| 575 |
return(0); |
| 576 |
} |
| 577 |
|
| 578 |
|
| 579 |
void |
| 580 |
addholo( /* add a holodeck file */ |
| 581 |
char *hdf |
| 582 |
) |
| 583 |
{ |
| 584 |
int fd; |
| 585 |
/* open the holodeck for reading */ |
| 586 |
openholo(hdf, 0); |
| 587 |
fd = hdlist[nholosects]->fd; /* remember the file handle */ |
| 588 |
while (hdlist[nholosects] != NULL) { /* load each section */ |
| 589 |
/* clump the beams */ |
| 590 |
clumpbeams(hdlist[nholosects], 0, BKBSIZE*1024, addclump); |
| 591 |
hddone(hdlist[nholosects]); /* free the section */ |
| 592 |
} |
| 593 |
close(fd); /* close input file */ |
| 594 |
hdflush(NULL); /* flush output */ |
| 595 |
} |
| 596 |
|
| 597 |
|
| 598 |
|
| 599 |
static int |
| 600 |
picheadline( /* process picture header line */ |
| 601 |
char *s, |
| 602 |
void *vph |
| 603 |
) |
| 604 |
{ |
| 605 |
char fmt[32]; |
| 606 |
struct phead *ph = (struct phead *)vph; |
| 607 |
|
| 608 |
if (formatval(fmt, s)) { |
| 609 |
ph->badfmt = strcmp(fmt, COLRFMT); |
| 610 |
return(0); |
| 611 |
} |
| 612 |
if (isprims(s)) { |
| 613 |
ph->altprims++; /* don't want to deal with this */ |
| 614 |
return(0); |
| 615 |
} |
| 616 |
if (isexpos(s)) { |
| 617 |
ph->expos *= exposval(s); |
| 618 |
return(0); |
| 619 |
} |
| 620 |
if (isview(s)) { |
| 621 |
ph->gotview += sscanview(&ph->vw, s); |
| 622 |
return(0); |
| 623 |
} |
| 624 |
return(0); |
| 625 |
} |
| 626 |
|
| 627 |
|
| 628 |
void |
| 629 |
addpicz( /* add a picture + depth-buffer */ |
| 630 |
char *pcf, |
| 631 |
char *zbf |
| 632 |
) |
| 633 |
{ |
| 634 |
FILE *pfp; |
| 635 |
int zfd; |
| 636 |
COLR *cscn; |
| 637 |
float *zscn; |
| 638 |
struct phead phd; |
| 639 |
int eshft; |
| 640 |
double emult; |
| 641 |
RESOLU prs; |
| 642 |
RREAL vl[2]; |
| 643 |
RAYPAR ryp; |
| 644 |
double aftd; |
| 645 |
int j, i; |
| 646 |
/* open picture & get header */ |
| 647 |
if ((pfp = fopen(pcf, "rb")) == NULL) { |
| 648 |
sprintf(errmsg, "cannot open picture file \"%s\"", pcf); |
| 649 |
error(SYSTEM, pcf); |
| 650 |
} |
| 651 |
phd.vw = stdview; |
| 652 |
phd.expos = 1.0; |
| 653 |
phd.badfmt = phd.gotview = phd.altprims = 0; |
| 654 |
if (getheader(pfp, picheadline, &phd) < 0 || |
| 655 |
phd.badfmt || !fgetsresolu(&prs, pfp)) { |
| 656 |
sprintf(errmsg, "bad format for picture file \"%s\"", pcf); |
| 657 |
error(USER, errmsg); |
| 658 |
} |
| 659 |
if (!phd.gotview || setview(&phd.vw) != NULL) { |
| 660 |
sprintf(errmsg, "missing/illegal view in picture \"%s\"", |
| 661 |
pcf); |
| 662 |
error(USER, errmsg); |
| 663 |
} |
| 664 |
if (phd.altprims) { |
| 665 |
sprintf(errmsg, "ignoring color primaries in picture \"%s\"", |
| 666 |
pcf); |
| 667 |
error(WARNING, errmsg); |
| 668 |
} |
| 669 |
/* open depth buffer */ |
| 670 |
if ((zfd = open_float_depth(zbf, prs.xr*prs.yr)) < 0) |
| 671 |
quit(1); |
| 672 |
/* figure out what to do about exposure */ |
| 673 |
if ((phd.expos < 0.99) | (phd.expos > 1.01)) { |
| 674 |
emult = -log(phd.expos)/log(2.); |
| 675 |
eshft = emult >= 0. ? emult+.5 : emult-.5; |
| 676 |
emult -= (double)eshft; |
| 677 |
if ((emult <= 0.01) & (emult >= -0.01)) |
| 678 |
emult = -1.; |
| 679 |
else { |
| 680 |
emult = 1./phd.expos; |
| 681 |
eshft = 0; |
| 682 |
} |
| 683 |
} else { |
| 684 |
emult = -1.; |
| 685 |
eshft = 0; |
| 686 |
} |
| 687 |
/* allocate buffers */ |
| 688 |
cscn = (COLR *)malloc(scanlen(&prs)*sizeof(COLR)); |
| 689 |
zscn = (float *)malloc(scanlen(&prs)*sizeof(float)); |
| 690 |
if ((cscn == NULL) | (zscn == NULL)) |
| 691 |
error(SYSTEM, "out of memory in addpicz"); |
| 692 |
/* read and process each scanline */ |
| 693 |
for (j = 0; j < numscans(&prs); j++) { |
| 694 |
i = scanlen(&prs); /* read colrs */ |
| 695 |
if (freadcolrs(cscn, i, pfp) < 0) { |
| 696 |
sprintf(errmsg, "error reading picture \"%s\"", pcf); |
| 697 |
error(USER, errmsg); |
| 698 |
} |
| 699 |
if (eshft) /* shift exposure */ |
| 700 |
shiftcolrs(cscn, i, eshft); |
| 701 |
/* read depth */ |
| 702 |
if (read(zfd, zscn, i*sizeof(float)) != i*sizeof(float)) { |
| 703 |
sprintf(errmsg, "error reading depth file \"%s\"", zbf); |
| 704 |
error(USER, errmsg); |
| 705 |
} |
| 706 |
while (i--) { /* process each pixel */ |
| 707 |
if (zscn[i] <= 0.0) |
| 708 |
continue; /* illegal depth */ |
| 709 |
pix2loc(vl, &prs, i, j); |
| 710 |
aftd = viewray(ryp.ro, ryp.rd, &phd.vw, vl[0], vl[1]); |
| 711 |
if (aftd < -FTINY) |
| 712 |
continue; /* off view */ |
| 713 |
if (aftd > FTINY && zscn[i] > aftd) |
| 714 |
continue; /* aft clipped */ |
| 715 |
ryp.d = (RREAL)zscn[i]; |
| 716 |
copycolr(ryp.cv, cscn[i]); |
| 717 |
if (emult > 0.) { /* whatta pain */ |
| 718 |
COLOR ctmp; |
| 719 |
colr_color(ctmp, ryp.cv); |
| 720 |
scalecolor(ctmp, emult); |
| 721 |
setcolr(ryp.cv, colval(ctmp,RED), |
| 722 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
| 723 |
} |
| 724 |
addray(&ryp); |
| 725 |
} |
| 726 |
} |
| 727 |
/* write output and free beams */ |
| 728 |
hdflush(NULL); |
| 729 |
/* clean up */ |
| 730 |
free((void *)cscn); |
| 731 |
free((void *)zscn); |
| 732 |
fclose(pfp); |
| 733 |
close(zfd); |
| 734 |
} |
| 735 |
|
| 736 |
|
| 737 |
void |
| 738 |
eputs( /* put error message to stderr */ |
| 739 |
char *s |
| 740 |
) |
| 741 |
{ |
| 742 |
static int midline = 0; |
| 743 |
|
| 744 |
if (!*s) |
| 745 |
return; |
| 746 |
if (!midline++) { /* prepend line with program name */ |
| 747 |
fputs(progname, stderr); |
| 748 |
fputs(": ", stderr); |
| 749 |
} |
| 750 |
fputs(s, stderr); |
| 751 |
if (s[strlen(s)-1] == '\n') { |
| 752 |
fflush(stderr); |
| 753 |
midline = 0; |
| 754 |
} |
| 755 |
} |
| 756 |
|
| 757 |
|
| 758 |
void |
| 759 |
quit( /* exit the program gracefully */ |
| 760 |
int code |
| 761 |
) |
| 762 |
{ |
| 763 |
hdsync(NULL, 1); /* write out any buffered data */ |
| 764 |
exit(code); |
| 765 |
} |
