| 60 |
|
int thresolu, tvresolu; /* input resolution */ |
| 61 |
|
double theirexp; /* input picture exposure */ |
| 62 |
|
double theirs2ours[4][4]; /* transformation matrix */ |
| 63 |
+ |
int hasmatrix = 0; /* has transformation matrix */ |
| 64 |
|
|
| 65 |
|
int childpid = -1; /* id of fill process */ |
| 66 |
|
FILE *psend, *precv; /* pipes to/from fill calculation */ |
| 285 |
|
exit(1); |
| 286 |
|
} |
| 287 |
|
/* compute transformation */ |
| 288 |
< |
pixform(theirs2ours, &theirview, &ourview); |
| 288 |
> |
hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
| 289 |
|
/* allocate scanlines */ |
| 290 |
|
scanin = (COLR *)malloc(thresolu*sizeof(COLR)); |
| 291 |
|
zin = (float *)malloc(thresolu*sizeof(float)); |
| 332 |
|
{ |
| 333 |
|
double m4t[4][4]; |
| 334 |
|
|
| 335 |
+ |
if (vw1->type != VT_PER && vw1->type != VT_PAR) |
| 336 |
+ |
return(0); |
| 337 |
+ |
if (vw2->type != VT_PER && vw2->type != VT_PAR) |
| 338 |
+ |
return(0); |
| 339 |
|
setident4(xfmat); |
| 340 |
|
xfmat[0][0] = vw1->hvec[0]; |
| 341 |
|
xfmat[0][1] = vw1->hvec[1]; |
| 363 |
|
m4t[2][2] = vw2->vdir[2]; |
| 364 |
|
m4t[3][2] = -DOT(vw2->vp,vw2->vdir); |
| 365 |
|
multmat4(xfmat, xfmat, m4t); |
| 366 |
+ |
return(1); |
| 367 |
|
} |
| 368 |
|
|
| 369 |
|
|
| 374 |
|
struct position *lasty; /* input/output */ |
| 375 |
|
{ |
| 376 |
|
extern double sqrt(); |
| 377 |
< |
double pos[3]; |
| 377 |
> |
FVECT pos; |
| 378 |
|
struct position lastx, newpos; |
| 379 |
|
register int x; |
| 380 |
|
|
| 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; |
| 383 |
> |
pos[0] = (x+.5)/thresolu; |
| 384 |
> |
pos[1] = (y+.5)/tvresolu; |
| 385 |
|
pos[2] = zline[x]; |
| 386 |
< |
if (theirview.type == VT_PER) { |
| 381 |
< |
if (normdist) /* adjust for eye-ray distance */ |
| 382 |
< |
pos[2] /= sqrt( 1. |
| 383 |
< |
+ pos[0]*pos[0]*theirview.hn2 |
| 384 |
< |
+ pos[1]*pos[1]*theirview.vn2 ); |
| 385 |
< |
pos[0] *= pos[2]; |
| 386 |
< |
pos[1] *= pos[2]; |
| 387 |
< |
} |
| 388 |
< |
multp3(pos, pos, theirs2ours); |
| 389 |
< |
if (pos[2] <= 0) { |
| 386 |
> |
if (movepixel(pos) < 0) { |
| 387 |
|
lasty[x].z = lastx.z = 0; /* mark invalid */ |
| 388 |
|
continue; |
| 389 |
|
} |
| 393 |
– |
if (ourview.type == VT_PER) { |
| 394 |
– |
pos[0] /= pos[2]; |
| 395 |
– |
pos[1] /= pos[2]; |
| 396 |
– |
} |
| 397 |
– |
pos[0] += .5 - ourview.hoff; |
| 398 |
– |
pos[1] += .5 - ourview.voff; |
| 390 |
|
newpos.x = pos[0] * hresolu; |
| 391 |
|
newpos.y = pos[1] * vresolu; |
| 392 |
|
newpos.z = zline[x]; |
| 457 |
|
} |
| 458 |
|
} |
| 459 |
|
} |
| 460 |
+ |
} |
| 461 |
+ |
|
| 462 |
+ |
|
| 463 |
+ |
movepixel(pos) /* reposition image point */ |
| 464 |
+ |
FVECT pos; |
| 465 |
+ |
{ |
| 466 |
+ |
FVECT pt, direc; |
| 467 |
+ |
|
| 468 |
+ |
if (hasmatrix) { |
| 469 |
+ |
pos[0] += theirview.hoff - .5; |
| 470 |
+ |
pos[1] += theirview.voff - .5; |
| 471 |
+ |
if (theirview.type == VT_PER) { |
| 472 |
+ |
if (normdist) /* adjust for eye-ray distance */ |
| 473 |
+ |
pos[2] /= sqrt( 1. |
| 474 |
+ |
+ pos[0]*pos[0]*theirview.hn2 |
| 475 |
+ |
+ pos[1]*pos[1]*theirview.vn2 ); |
| 476 |
+ |
pos[0] *= pos[2]; |
| 477 |
+ |
pos[1] *= pos[2]; |
| 478 |
+ |
} |
| 479 |
+ |
multp3(pos, pos, theirs2ours); |
| 480 |
+ |
if (pos[2] <= 0) |
| 481 |
+ |
return(-1); |
| 482 |
+ |
if (ourview.type == VT_PER) { |
| 483 |
+ |
pos[0] /= pos[2]; |
| 484 |
+ |
pos[1] /= pos[2]; |
| 485 |
+ |
} |
| 486 |
+ |
pos[0] += .5 - ourview.hoff; |
| 487 |
+ |
pos[1] += .5 - ourview.voff; |
| 488 |
+ |
return(0); |
| 489 |
+ |
} |
| 490 |
+ |
if (viewray(pt, direc, &theirview, pos[0], pos[1]) < 0) |
| 491 |
+ |
return(-1); |
| 492 |
+ |
pt[0] += direc[0]*pos[2]; |
| 493 |
+ |
pt[1] += direc[1]*pos[2]; |
| 494 |
+ |
pt[2] += direc[2]*pos[2]; |
| 495 |
+ |
viewpixel(&pos[0], &pos[1], &pos[2], &ourview, pt); |
| 496 |
+ |
if (pos[2] <= 0) |
| 497 |
+ |
return(-1); |
| 498 |
+ |
return(0); |
| 499 |
|
} |
| 500 |
|
|
| 501 |
|
|
