| 20 |
|
|
| 21 |
|
#include "resolu.h" |
| 22 |
|
|
| 23 |
+ |
#define LOG2 0.69314718055994530942 |
| 24 |
+ |
|
| 25 |
|
#define pscan(y) (ourpict+(y)*hresolu) |
| 26 |
+ |
#define sscan(y) (ourspict+(y)*hresolu) |
| 27 |
+ |
#define wscan(y) (ourweigh+(y)*hresolu) |
| 28 |
|
#define zscan(y) (ourzbuf+(y)*hresolu) |
| 29 |
+ |
#define averaging (ourweigh != NULL) |
| 30 |
+ |
#define usematrix (hasmatrix & !averaging) |
| 31 |
+ |
#define zisnorm (!usematrix | ourview.type != VT_PER) |
| 32 |
|
|
| 33 |
+ |
#define MAXWT 1000. /* maximum pixel weight (averaging) */ |
| 34 |
+ |
|
| 35 |
|
#define F_FORE 1 /* fill foreground */ |
| 36 |
|
#define F_BACK 2 /* fill background */ |
| 37 |
|
|
| 55 |
|
|
| 56 |
|
double zeps = .02; /* allowed z epsilon */ |
| 57 |
|
|
| 58 |
< |
COLR *ourpict; /* output picture */ |
| 58 |
> |
COLR *ourpict; /* output picture (COLR's) */ |
| 59 |
> |
COLOR *ourspict; /* output pixel sums (averaging) */ |
| 60 |
> |
float *ourweigh = NULL; /* output pixel weights (averaging) */ |
| 61 |
|
float *ourzbuf; /* corresponding z-buffer */ |
| 62 |
|
|
| 63 |
|
char *progname; |
| 67 |
|
extern int backfill(), rcalfill(); /* fill functions */ |
| 68 |
|
int (*fillfunc)() = backfill; /* selected fill function */ |
| 69 |
|
COLR backcolr = BLKCOLR; /* background color */ |
| 70 |
+ |
COLOR backcolor = BLKCOLOR; /* background color (float) */ |
| 71 |
|
double backz = 0.0; /* background z value */ |
| 72 |
< |
int normdist = 1; /* normalized distance? */ |
| 73 |
< |
double ourexp = -1; /* output picture exposure */ |
| 72 |
> |
int normdist = 1; /* i/o normalized distance? */ |
| 73 |
> |
double ourexp = -1; /* original picture exposure */ |
| 74 |
> |
int expadj = 0; /* exposure adjustment (f-stops) */ |
| 75 |
> |
double rexpadj = 1; /* real exposure adjustment */ |
| 76 |
|
|
| 77 |
|
VIEW theirview = STDVIEW; /* input view */ |
| 78 |
|
int gotview; /* got input view? */ |
| 79 |
|
int wrongformat = 0; /* input in another format? */ |
| 80 |
|
RESOLU tresolu; /* input resolution */ |
| 81 |
|
double theirexp; /* input picture exposure */ |
| 82 |
< |
double theirs2ours[4][4]; /* transformation matrix */ |
| 82 |
> |
MAT4 theirs2ours; /* transformation matrix */ |
| 83 |
|
int hasmatrix = 0; /* has transformation matrix */ |
| 84 |
|
|
| 85 |
|
int PDesc[3] = {-1,-1,-1}; /* rtrace process descriptor */ |
| 88 |
|
int packsiz; /* actual packet size */ |
| 89 |
|
int queuesiz; /* number of pixels pending */ |
| 90 |
|
|
| 91 |
+ |
extern double movepixel(); |
| 92 |
|
|
| 93 |
+ |
|
| 94 |
|
main(argc, argv) /* interpolate pictures */ |
| 95 |
|
int argc; |
| 96 |
|
char *argv[]; |
| 99 |
|
badarg(argc-i-1,argv+i+1,al)) \ |
| 100 |
|
goto badopt |
| 101 |
|
int gotvfile = 0; |
| 102 |
+ |
int doavg = -1; |
| 103 |
|
char *zfile = NULL; |
| 104 |
+ |
char *expcomp = NULL; |
| 105 |
|
char *err; |
| 106 |
|
int i, rval; |
| 107 |
|
|
| 114 |
|
continue; |
| 115 |
|
} |
| 116 |
|
switch (argv[i][1]) { |
| 117 |
+ |
case 'e': /* exposure */ |
| 118 |
+ |
check(2,"f"); |
| 119 |
+ |
expcomp = argv[++i]; |
| 120 |
+ |
break; |
| 121 |
|
case 't': /* threshold */ |
| 122 |
|
check(2,"f"); |
| 123 |
|
zeps = atof(argv[++i]); |
| 124 |
|
break; |
| 125 |
+ |
case 'a': /* average */ |
| 126 |
+ |
check(2,NULL); |
| 127 |
+ |
doavg = 1; |
| 128 |
+ |
break; |
| 129 |
+ |
case 'q': /* quick (no avg.) */ |
| 130 |
+ |
check(2,NULL); |
| 131 |
+ |
doavg = 0; |
| 132 |
+ |
break; |
| 133 |
|
case 'n': /* dist. normalized? */ |
| 134 |
|
check(2,NULL); |
| 135 |
|
normdist = !normdist; |
| 159 |
|
case 'c': /* color */ |
| 160 |
|
check(3,"fff"); |
| 161 |
|
fillfunc = backfill; |
| 162 |
< |
setcolr(backcolr, atof(argv[i+1]), |
| 162 |
> |
setcolor(backcolor, atof(argv[i+1]), |
| 163 |
|
atof(argv[i+2]), atof(argv[i+3])); |
| 164 |
+ |
setcolr(backcolr, colval(backcolor,RED), |
| 165 |
+ |
colval(backcolor,GRN), |
| 166 |
+ |
colval(backcolor,BLU)); |
| 167 |
|
i += 3; |
| 168 |
|
break; |
| 169 |
|
case 'z': /* z value */ |
| 223 |
|
goto userr; |
| 224 |
|
if (fillsamp == 1) |
| 225 |
|
fillo &= ~F_BACK; |
| 226 |
+ |
if (doavg < 0) |
| 227 |
+ |
doavg = (argc-i) > 2; |
| 228 |
+ |
if (expcomp != NULL) |
| 229 |
+ |
if (expcomp[0] == '+' | expcomp[0] == '-') { |
| 230 |
+ |
expadj = atof(expcomp) + (expcomp[0]=='+' ? .5 : -.5); |
| 231 |
+ |
if (doavg) |
| 232 |
+ |
rexpadj = pow(2.0, atof(expcomp)); |
| 233 |
+ |
else |
| 234 |
+ |
rexpadj = pow(2.0, (double)expadj); |
| 235 |
+ |
} else { |
| 236 |
+ |
if (!isflt(expcomp)) |
| 237 |
+ |
goto userr; |
| 238 |
+ |
rexpadj = atof(expcomp); |
| 239 |
+ |
expadj = log(rexpadj)/LOG2 + (rexpadj>1 ? .5 : -.5); |
| 240 |
+ |
if (!doavg) |
| 241 |
+ |
rexpadj = pow(2.0, (double)expadj); |
| 242 |
+ |
} |
| 243 |
|
/* set view */ |
| 244 |
|
if ((err = setview(&ourview)) != NULL) { |
| 245 |
|
fprintf(stderr, "%s: %s\n", progname, err); |
| 247 |
|
} |
| 248 |
|
normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu); |
| 249 |
|
/* allocate frame */ |
| 250 |
< |
ourpict = (COLR *)bmalloc(hresolu*vresolu*sizeof(COLR)); |
| 250 |
> |
if (doavg) { |
| 251 |
> |
ourspict = (COLOR *)bmalloc(hresolu*vresolu*sizeof(COLOR)); |
| 252 |
> |
ourweigh = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
| 253 |
> |
if (ourspict == NULL | ourweigh == NULL) |
| 254 |
> |
syserror(progname); |
| 255 |
> |
} else { |
| 256 |
> |
ourpict = (COLR *)bmalloc(hresolu*vresolu*sizeof(COLR)); |
| 257 |
> |
if (ourpict == NULL) |
| 258 |
> |
syserror(progname); |
| 259 |
> |
} |
| 260 |
|
ourzbuf = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
| 261 |
< |
if (ourpict == NULL || ourzbuf == NULL) |
| 261 |
> |
if (ourzbuf == NULL) |
| 262 |
|
syserror(progname); |
| 263 |
|
bzero((char *)ourzbuf, hresolu*vresolu*sizeof(float)); |
| 264 |
|
/* new header */ |
| 282 |
|
fprintview(&ourview, stdout); |
| 283 |
|
putc('\n', stdout); |
| 284 |
|
} |
| 285 |
< |
if (pixaspect < .99 || pixaspect > 1.01) |
| 285 |
> |
if (pixaspect < .99 | pixaspect > 1.01) |
| 286 |
|
fputaspect(pixaspect, stdout); |
| 287 |
< |
if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
| 287 |
> |
if (ourexp > 0) |
| 288 |
> |
ourexp *= rexpadj; |
| 289 |
> |
else |
| 290 |
> |
ourexp = rexpadj; |
| 291 |
> |
if (ourexp < .995 | ourexp > 1.005) |
| 292 |
|
fputexpos(ourexp, stdout); |
| 293 |
|
fputformat(COLRFMT, stdout); |
| 294 |
|
putc('\n', stdout); |
| 301 |
|
exit(0); |
| 302 |
|
userr: |
| 303 |
|
fprintf(stderr, |
| 304 |
< |
"Usage: %s [view opts][-t eps][-z zout][-fT][-n] pfile zspec ..\n", |
| 304 |
> |
"Usage: %s [view opts][-t eps][-z zout][-e spec][-a|-q][-fT][-n] pfile zspec ..\n", |
| 305 |
|
progname); |
| 306 |
|
exit(1); |
| 307 |
|
#undef check |
| 371 |
|
if ((zfd = open(zspec, O_RDONLY)) == -1) { |
| 372 |
|
double zvalue; |
| 373 |
|
register int x; |
| 374 |
< |
if (!isfloat(zspec) || (zvalue = atof(zspec)) <= 0.0) |
| 374 |
> |
if (!isflt(zspec) || (zvalue = atof(zspec)) <= 0.0) |
| 375 |
|
syserror(zspec); |
| 376 |
|
for (x = scanlen(&tresolu); x-- > 0; ) |
| 377 |
|
zin[x] = zvalue; |
| 427 |
|
|
| 428 |
|
|
| 429 |
|
pixform(xfmat, vw1, vw2) /* compute view1 to view2 matrix */ |
| 430 |
< |
register double xfmat[4][4]; |
| 430 |
> |
register MAT4 xfmat; |
| 431 |
|
register VIEW *vw1, *vw2; |
| 432 |
|
{ |
| 433 |
|
double m4t[4][4]; |
| 476 |
|
{ |
| 477 |
|
FVECT pos; |
| 478 |
|
struct position lastx, newpos; |
| 479 |
+ |
double wt; |
| 480 |
|
register int x; |
| 481 |
|
|
| 482 |
|
lastx.z = 0; |
| 483 |
|
for (x = xl->max; x >= xl->min; x--) { |
| 484 |
|
pix2loc(pos, &tresolu, x, y); |
| 485 |
|
pos[2] = zline[x]; |
| 486 |
< |
if (movepixel(pos) < 0) { |
| 486 |
> |
if ((wt = movepixel(pos)) <= FTINY) { |
| 487 |
|
lasty[x].z = lastx.z = 0; /* mark invalid */ |
| 488 |
|
continue; |
| 489 |
|
} |
| 490 |
+ |
/* add pixel to our image */ |
| 491 |
|
newpos.x = pos[0] * hresolu; |
| 492 |
|
newpos.y = pos[1] * vresolu; |
| 493 |
|
newpos.z = zline[x]; |
| 494 |
< |
/* add pixel to our image */ |
| 495 |
< |
if (pos[0] >= 0 && newpos.x < hresolu |
| 496 |
< |
&& pos[1] >= 0 && newpos.y < vresolu) { |
| 497 |
< |
addpixel(&newpos, &lastx, &lasty[x], pline[x], pos[2]); |
| 433 |
< |
lasty[x].x = lastx.x = newpos.x; |
| 434 |
< |
lasty[x].y = lastx.y = newpos.y; |
| 435 |
< |
lasty[x].z = lastx.z = newpos.z; |
| 436 |
< |
} else |
| 437 |
< |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
| 494 |
> |
addpixel(&newpos, &lastx, &lasty[x], pline[x], wt, pos[2]); |
| 495 |
> |
lasty[x].x = lastx.x = newpos.x; |
| 496 |
> |
lasty[x].y = lastx.y = newpos.y; |
| 497 |
> |
lasty[x].z = lastx.z = newpos.z; |
| 498 |
|
} |
| 499 |
|
} |
| 500 |
|
|
| 501 |
|
|
| 502 |
< |
addpixel(p0, p1, p2, pix, z) /* fill in pixel parallelogram */ |
| 502 |
> |
addpixel(p0, p1, p2, pix, w, z) /* fill in pixel parallelogram */ |
| 503 |
|
struct position *p0, *p1, *p2; |
| 504 |
|
COLR pix; |
| 505 |
+ |
double w; |
| 506 |
|
double z; |
| 507 |
|
{ |
| 508 |
|
double zt = 2.*zeps*p0->z; /* threshold */ |
| 509 |
+ |
COLOR pval; /* converted+weighted pixel */ |
| 510 |
|
int s1x, s1y, s2x, s2y; /* step sizes */ |
| 511 |
|
int l1, l2, c1, c2; /* side lengths and counters */ |
| 512 |
|
int p1isy; /* p0p1 along y? */ |
| 520 |
|
l1 = ABS(s1x); |
| 521 |
|
if (p1isy = (ABS(s1y) > l1)) |
| 522 |
|
l1 = ABS(s1y); |
| 523 |
+ |
else if (l1 < 1) |
| 524 |
+ |
l1 = 1; |
| 525 |
|
} else { |
| 526 |
|
l1 = s1x = s1y = 1; |
| 527 |
|
p1isy = -1; |
| 537 |
|
if (p1isy != 0 && ABS(s2x) > l2) |
| 538 |
|
l2 = ABS(s2x); |
| 539 |
|
} |
| 540 |
+ |
if (l2 < 1) |
| 541 |
+ |
l2 = 1; |
| 542 |
|
} else |
| 543 |
|
l2 = s2x = s2y = 1; |
| 544 |
|
/* fill the parallelogram */ |
| 545 |
+ |
if (averaging) { |
| 546 |
+ |
colr_color(pval, pix); |
| 547 |
+ |
scalecolor(pval, w); |
| 548 |
+ |
} |
| 549 |
|
for (c1 = l1; c1-- > 0; ) { |
| 550 |
|
x1 = p0->x + c1*s1x/l1; |
| 551 |
|
y1 = p0->y + c1*s1y/l1; |
| 556 |
|
y = y1 + c2*s2y/l2; |
| 557 |
|
if (y < 0 || y >= vresolu) |
| 558 |
|
continue; |
| 559 |
< |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
| 559 |
> |
if (averaging) { |
| 560 |
> |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
| 561 |
|
> zeps*zscan(y)[x]) { |
| 562 |
< |
zscan(y)[x] = z; |
| 562 |
> |
copycolor(sscan(y)[x], pval); |
| 563 |
> |
wscan(y)[x] = w; |
| 564 |
> |
zscan(y)[x] = z; |
| 565 |
> |
} else if (z-zscan(y)[x] <= zeps*zscan(y)[x]) { |
| 566 |
> |
addcolor(sscan(y)[x], pval); |
| 567 |
> |
wscan(y)[x] += w; |
| 568 |
> |
} |
| 569 |
> |
} else if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
| 570 |
> |
> zeps*zscan(y)[x]) { |
| 571 |
|
copycolr(pscan(y)[x], pix); |
| 572 |
+ |
zscan(y)[x] = z; |
| 573 |
|
} |
| 574 |
|
} |
| 575 |
|
} |
| 576 |
|
} |
| 577 |
|
|
| 578 |
|
|
| 579 |
+ |
double |
| 580 |
+ |
movepixel(pos) /* reposition image point */ |
| 581 |
+ |
register FVECT pos; |
| 582 |
+ |
{ |
| 583 |
+ |
FVECT pt, tdir, odir; |
| 584 |
+ |
double d; |
| 585 |
+ |
register int i; |
| 586 |
+ |
|
| 587 |
+ |
if (pos[2] <= 0) /* empty pixel */ |
| 588 |
+ |
return(0); |
| 589 |
+ |
if (usematrix) { |
| 590 |
+ |
pos[0] += theirview.hoff - .5; |
| 591 |
+ |
pos[1] += theirview.voff - .5; |
| 592 |
+ |
if (normdist && theirview.type == VT_PER) |
| 593 |
+ |
d = sqrt(1. + pos[0]*pos[0]*theirview.hn2 |
| 594 |
+ |
+ pos[1]*pos[1]*theirview.vn2); |
| 595 |
+ |
else |
| 596 |
+ |
d = 1.; |
| 597 |
+ |
pos[2] += d*theirview.vfore; |
| 598 |
+ |
if (theirview.type == VT_PER) { |
| 599 |
+ |
pos[2] /= d; |
| 600 |
+ |
pos[0] *= pos[2]; |
| 601 |
+ |
pos[1] *= pos[2]; |
| 602 |
+ |
} |
| 603 |
+ |
multp3(pos, pos, theirs2ours); |
| 604 |
+ |
if (pos[2] <= ourview.vfore) |
| 605 |
+ |
return(0); |
| 606 |
+ |
if (ourview.type == VT_PER) { |
| 607 |
+ |
pos[0] /= pos[2]; |
| 608 |
+ |
pos[1] /= pos[2]; |
| 609 |
+ |
} |
| 610 |
+ |
pos[0] += .5 - ourview.hoff; |
| 611 |
+ |
pos[1] += .5 - ourview.voff; |
| 612 |
+ |
pos[2] -= ourview.vfore; |
| 613 |
+ |
} else { |
| 614 |
+ |
if (viewray(pt, tdir, &theirview, pos[0], pos[1]) < -FTINY) |
| 615 |
+ |
return(0); |
| 616 |
+ |
if (!normdist & theirview.type == VT_PER) /* adjust */ |
| 617 |
+ |
pos[2] *= sqrt(1. + pos[0]*pos[0]*theirview.hn2 |
| 618 |
+ |
+ pos[1]*pos[1]*theirview.vn2); |
| 619 |
+ |
pt[0] += tdir[0]*pos[2]; |
| 620 |
+ |
pt[1] += tdir[1]*pos[2]; |
| 621 |
+ |
pt[2] += tdir[2]*pos[2]; |
| 622 |
+ |
viewloc(pos, &ourview, pt); |
| 623 |
+ |
if (pos[2] <= 0) |
| 624 |
+ |
return(0); |
| 625 |
+ |
} |
| 626 |
+ |
if (pos[0] < 0 || pos[0] >= 1-FTINY || pos[1] < 0 || pos[1] >= 1-FTINY) |
| 627 |
+ |
return(0); |
| 628 |
+ |
if (!averaging) |
| 629 |
+ |
return(1); |
| 630 |
+ |
if (ourview.type == VT_PAR) /* compute our direction */ |
| 631 |
+ |
VCOPY(odir, ourview.vdir); |
| 632 |
+ |
else |
| 633 |
+ |
for (i = 0; i < 3; i++) |
| 634 |
+ |
odir[i] = (pt[i] - ourview.vp[i])/pos[2]; |
| 635 |
+ |
d = DOT(odir,tdir); /* compute pixel weight */ |
| 636 |
+ |
if (d >= 1.-1./MAXWT/MAXWT) |
| 637 |
+ |
return(MAXWT); /* clip to maximum weight */ |
| 638 |
+ |
return(1./sqrt(1.-d)); |
| 639 |
+ |
} |
| 640 |
+ |
|
| 641 |
+ |
|
| 642 |
|
getperim(xl, yl, zline, zfd) /* compute overlapping image area */ |
| 643 |
|
register struct bound *xl; |
| 644 |
|
struct bound *yl; |
| 678 |
|
for (x = scanlen(&tresolu); (x -= step) > 0; ) { |
| 679 |
|
pix2loc(pos, &tresolu, x, y); |
| 680 |
|
pos[2] = zline[x]; |
| 681 |
< |
if (movepixel(pos) == 0 && pos[0] >= 0 && |
| 539 |
< |
pos[0] < 1 && pos[1] >= 0 && |
| 540 |
< |
pos[1] < 1) { |
| 681 |
> |
if (movepixel(pos) > FTINY) { |
| 682 |
|
xl[y].max = x + step - 1; |
| 683 |
|
xl[y].min = x - step + 1; /* x min */ |
| 684 |
|
if (xl[y].min < 0) |
| 686 |
|
for (x = step - 1; x < xl[y].max; x += step) { |
| 687 |
|
pix2loc(pos, &tresolu, x, y); |
| 688 |
|
pos[2] = zline[x]; |
| 689 |
< |
if (movepixel(pos) == 0 && |
| 549 |
< |
pos[0] >= 0 && |
| 550 |
< |
pos[0] < 1 && |
| 551 |
< |
pos[1] >= 0 && |
| 552 |
< |
pos[1] < 1) { |
| 689 |
> |
if (movepixel(pos) > FTINY) { |
| 690 |
|
xl[y].min = x - step + 1; |
| 691 |
|
break; |
| 692 |
|
} |
| 698 |
|
} |
| 699 |
|
} |
| 700 |
|
/* fill in between */ |
| 701 |
< |
if (xl[y].min < xl[y-step].min) |
| 701 |
> |
if (y < step) { |
| 702 |
|
xl[y-1].min = xl[y].min; |
| 566 |
– |
else |
| 567 |
– |
xl[y-1].min = xl[y-step].min; |
| 568 |
– |
if (xl[y].max > xl[y-step].max) |
| 703 |
|
xl[y-1].max = xl[y].max; |
| 704 |
< |
else |
| 705 |
< |
xl[y-1].max = xl[y-step].max; |
| 704 |
> |
} else { |
| 705 |
> |
if (xl[y].min < xl[y-step].min) |
| 706 |
> |
xl[y-1].min = xl[y].min; |
| 707 |
> |
else |
| 708 |
> |
xl[y-1].min = xl[y-step].min; |
| 709 |
> |
if (xl[y].max > xl[y-step].max) |
| 710 |
> |
xl[y-1].max = xl[y].max; |
| 711 |
> |
else |
| 712 |
> |
xl[y-1].max = xl[y-step].max; |
| 713 |
> |
} |
| 714 |
|
for (x = 2; x < step; x++) |
| 715 |
|
copystruct(xl+y-x, xl+y-1); |
| 716 |
|
} |
| 717 |
|
if (yl->max >= numscans(&tresolu)) |
| 718 |
|
yl->max = numscans(&tresolu) - 1; |
| 719 |
+ |
y -= step; |
| 720 |
|
for (x = numscans(&tresolu) - 1; x > y; x--) /* fill bottom rows */ |
| 721 |
|
copystruct(xl+x, xl+y); |
| 722 |
|
return(yl->max >= yl->min); |
| 723 |
|
} |
| 724 |
|
|
| 725 |
|
|
| 583 |
– |
movepixel(pos) /* reposition image point */ |
| 584 |
– |
FVECT pos; |
| 585 |
– |
{ |
| 586 |
– |
double d0, d1; |
| 587 |
– |
FVECT pt, direc; |
| 588 |
– |
|
| 589 |
– |
if (pos[2] <= 0) /* empty pixel */ |
| 590 |
– |
return(-1); |
| 591 |
– |
if (normdist && theirview.type == VT_PER) { /* adjust distance */ |
| 592 |
– |
d0 = pos[0] + theirview.hoff - .5; |
| 593 |
– |
d1 = pos[1] + theirview.voff - .5; |
| 594 |
– |
pos[2] /= sqrt(1. + d0*d0*theirview.hn2 + d1*d1*theirview.vn2); |
| 595 |
– |
} |
| 596 |
– |
if (hasmatrix) { |
| 597 |
– |
pos[0] += theirview.hoff - .5; |
| 598 |
– |
pos[1] += theirview.voff - .5; |
| 599 |
– |
if (theirview.type == VT_PER) { |
| 600 |
– |
pos[0] *= pos[2]; |
| 601 |
– |
pos[1] *= pos[2]; |
| 602 |
– |
} |
| 603 |
– |
multp3(pos, pos, theirs2ours); |
| 604 |
– |
if (pos[2] <= 0) |
| 605 |
– |
return(-1); |
| 606 |
– |
if (ourview.type == VT_PER) { |
| 607 |
– |
pos[0] /= pos[2]; |
| 608 |
– |
pos[1] /= pos[2]; |
| 609 |
– |
} |
| 610 |
– |
pos[0] += .5 - ourview.hoff; |
| 611 |
– |
pos[1] += .5 - ourview.voff; |
| 612 |
– |
return(0); |
| 613 |
– |
} |
| 614 |
– |
if (viewray(pt, direc, &theirview, pos[0], pos[1]) < -FTINY) |
| 615 |
– |
return(-1); |
| 616 |
– |
pt[0] += direc[0]*pos[2]; |
| 617 |
– |
pt[1] += direc[1]*pos[2]; |
| 618 |
– |
pt[2] += direc[2]*pos[2]; |
| 619 |
– |
viewloc(pos, &ourview, pt); |
| 620 |
– |
if (pos[2] <= 0) |
| 621 |
– |
return(-1); |
| 622 |
– |
return(0); |
| 623 |
– |
} |
| 624 |
– |
|
| 625 |
– |
|
| 726 |
|
backpicture(fill, samp) /* background fill algorithm */ |
| 727 |
|
int (*fill)(); |
| 728 |
|
int samp; |
| 793 |
|
< zscan(y)[xback] ) ) { |
| 794 |
|
if (samp > 0 && ABS(x-xback) >= samp) |
| 795 |
|
goto fillit; |
| 796 |
< |
copycolr(pscan(y)[x],pscan(y)[xback]); |
| 796 |
> |
if (averaging) { |
| 797 |
> |
copycolor(sscan(y)[x], |
| 798 |
> |
sscan(y)[xback]); |
| 799 |
> |
wscan(y)[x] = wscan(y)[xback]; |
| 800 |
> |
} else |
| 801 |
> |
copycolr(pscan(y)[x], |
| 802 |
> |
pscan(y)[xback]); |
| 803 |
|
zscan(y)[x] = zscan(y)[xback]; |
| 804 |
|
} else { |
| 805 |
|
if (samp > 0 && ABS(y-yback[x]) > samp) |
| 806 |
|
goto fillit; |
| 807 |
< |
copycolr(pscan(y)[x],pscan(yback[x])[x]); |
| 807 |
> |
if (averaging) { |
| 808 |
> |
copycolor(sscan(y)[x], |
| 809 |
> |
sscan(yback[x])[x]); |
| 810 |
> |
wscan(y)[x] = |
| 811 |
> |
wscan(yback[x])[x]; |
| 812 |
> |
} else |
| 813 |
> |
copycolr(pscan(y)[x], |
| 814 |
> |
pscan(yback[x])[x]); |
| 815 |
|
zscan(y)[x] = zscan(yback[x])[x]; |
| 816 |
|
} |
| 817 |
|
continue; |
| 846 |
|
clipaft() /* perform aft clipping as indicated */ |
| 847 |
|
{ |
| 848 |
|
register int x, y; |
| 849 |
+ |
int adjtest = ourview.type == VT_PER & zisnorm; |
| 850 |
|
double tstdist; |
| 851 |
|
double yzn2, vx; |
| 852 |
|
|
| 854 |
|
return; |
| 855 |
|
tstdist = ourview.vaft - ourview.vfore; |
| 856 |
|
for (y = 0; y < vresolu; y++) { |
| 857 |
< |
if (ourview.type == VT_PER) { /* adjust distance */ |
| 857 |
> |
if (adjtest) { /* adjust test */ |
| 858 |
|
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
| 859 |
|
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
| 860 |
|
tstdist = (ourview.vaft - ourview.vfore)*sqrt(yzn2); |
| 861 |
|
} |
| 862 |
|
for (x = 0; x < hresolu; x++) |
| 863 |
|
if (zscan(y)[x] > tstdist) { |
| 864 |
< |
if (ourview.type == VT_PER) { |
| 864 |
> |
if (adjtest) { |
| 865 |
|
vx = (x+.5)/hresolu + ourview.hoff - .5; |
| 866 |
|
if (zscan(y)[x] <= (ourview.vaft - |
| 867 |
|
ourview.vfore) * |
| 868 |
|
sqrt(vx*vx*ourview.hn2 + yzn2)) |
| 869 |
|
continue; |
| 870 |
|
} |
| 871 |
< |
bzero(pscan(y)[x], sizeof(COLR)); |
| 871 |
> |
if (averaging) |
| 872 |
> |
bzero(sscan(y)[x], sizeof(COLOR)); |
| 873 |
> |
else |
| 874 |
> |
bzero(pscan(y)[x], sizeof(COLR)); |
| 875 |
|
zscan(y)[x] = 0.0; |
| 876 |
|
} |
| 877 |
|
} |
| 878 |
|
} |
| 879 |
|
|
| 880 |
|
|
| 881 |
< |
writepicture() /* write out picture */ |
| 881 |
> |
writepicture() /* write out picture (alters buffer) */ |
| 882 |
|
{ |
| 883 |
|
int y; |
| 884 |
+ |
register int x; |
| 885 |
+ |
double d; |
| 886 |
|
|
| 887 |
|
fprtresolu(hresolu, vresolu, stdout); |
| 888 |
|
for (y = vresolu-1; y >= 0; y--) |
| 889 |
< |
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
| 890 |
< |
syserror(progname); |
| 889 |
> |
if (averaging) { |
| 890 |
> |
for (x = 0; x < hresolu; x++) { /* average pixels */ |
| 891 |
> |
d = rexpadj/wscan(y)[x]; |
| 892 |
> |
scalecolor(sscan(y)[x], d); |
| 893 |
> |
} |
| 894 |
> |
if (fwritescan(sscan(y), hresolu, stdout) < 0) |
| 895 |
> |
syserror(progname); |
| 896 |
> |
} else { |
| 897 |
> |
if (expadj) |
| 898 |
> |
shiftcolrs(pscan(y), hresolu, expadj); |
| 899 |
> |
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
| 900 |
> |
syserror(progname); |
| 901 |
> |
} |
| 902 |
|
} |
| 903 |
|
|
| 904 |
|
|
| 905 |
< |
writedistance(fname) /* write out z file */ |
| 905 |
> |
writedistance(fname) /* write out z file (alters buffer) */ |
| 906 |
|
char *fname; |
| 907 |
|
{ |
| 908 |
< |
int donorm = normdist && ourview.type == VT_PER; |
| 908 |
> |
int donorm = normdist & !zisnorm ? 1 : |
| 909 |
> |
ourview.type == VT_PER & !normdist & zisnorm ? -1 : 0; |
| 910 |
|
int fd; |
| 911 |
|
int y; |
| 781 |
– |
float *zout; |
| 912 |
|
|
| 913 |
|
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) |
| 914 |
|
syserror(fname); |
| 785 |
– |
if (donorm |
| 786 |
– |
&& (zout = (float *)malloc(hresolu*sizeof(float))) == NULL) |
| 787 |
– |
syserror(progname); |
| 915 |
|
for (y = vresolu-1; y >= 0; y--) { |
| 916 |
|
if (donorm) { |
| 917 |
< |
double vx, yzn2; |
| 917 |
> |
double vx, yzn2, d; |
| 918 |
|
register int x; |
| 919 |
|
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
| 920 |
|
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
| 921 |
|
for (x = 0; x < hresolu; x++) { |
| 922 |
|
vx = (x+.5)/hresolu + ourview.hoff - .5; |
| 923 |
< |
zout[x] = zscan(y)[x] |
| 924 |
< |
* sqrt(vx*vx*ourview.hn2 + yzn2); |
| 923 |
> |
d = sqrt(vx*vx*ourview.hn2 + yzn2); |
| 924 |
> |
if (donorm > 0) |
| 925 |
> |
zscan(y)[x] *= d; |
| 926 |
> |
else |
| 927 |
> |
zscan(y)[x] /= d; |
| 928 |
|
} |
| 929 |
< |
} else |
| 930 |
< |
zout = zscan(y); |
| 801 |
< |
if (write(fd, (char *)zout, hresolu*sizeof(float)) |
| 929 |
> |
} |
| 930 |
> |
if (write(fd, (char *)zscan(y), hresolu*sizeof(float)) |
| 931 |
|
< hresolu*sizeof(float)) |
| 932 |
|
syserror(fname); |
| 933 |
|
} |
| 805 |
– |
if (donorm) |
| 806 |
– |
free((char *)zout); |
| 934 |
|
close(fd); |
| 935 |
|
} |
| 936 |
|
|
| 937 |
|
|
| 811 |
– |
isfloat(s) /* see if string is floating number */ |
| 812 |
– |
register char *s; |
| 813 |
– |
{ |
| 814 |
– |
for ( ; *s; s++) |
| 815 |
– |
if ((*s < '0' || *s > '9') && *s != '.' && *s != '-' |
| 816 |
– |
&& *s != 'e' && *s != 'E' && *s != '+') |
| 817 |
– |
return(0); |
| 818 |
– |
return(1); |
| 819 |
– |
} |
| 820 |
– |
|
| 821 |
– |
|
| 938 |
|
backfill(x, y) /* fill pixel with background */ |
| 939 |
|
int x, y; |
| 940 |
|
{ |
| 941 |
< |
register BYTE *dest = pscan(y)[x]; |
| 942 |
< |
|
| 943 |
< |
copycolr(dest, backcolr); |
| 941 |
> |
if (averaging) { |
| 942 |
> |
copycolor(sscan(y)[x], backcolor); |
| 943 |
> |
wscan(y)[x] = 1; |
| 944 |
> |
} else |
| 945 |
> |
copycolr(pscan(y)[x], backcolr); |
| 946 |
|
zscan(y)[x] = backz; |
| 947 |
|
} |
| 948 |
|
|
| 1015 |
|
float fbuf[6*(PACKSIZ+1)]; |
| 1016 |
|
register float *fbp; |
| 1017 |
|
register int i; |
| 1018 |
+ |
double vx, vy; |
| 1019 |
|
|
| 1020 |
|
if (queuesiz == 0) |
| 1021 |
|
return; |
| 1043 |
|
fbp[1] *= ourexp; |
| 1044 |
|
fbp[2] *= ourexp; |
| 1045 |
|
} |
| 1046 |
< |
setcolr(pscan(queue[i][1])[queue[i][0]], |
| 1047 |
< |
fbp[0], fbp[1], fbp[2]); |
| 1048 |
< |
zscan(queue[i][1])[queue[i][0]] = fbp[3]; |
| 1046 |
> |
if (averaging) { |
| 1047 |
> |
setcolor(sscan(queue[i][1])[queue[i][0]], |
| 1048 |
> |
fbp[0], fbp[1], fbp[2]); |
| 1049 |
> |
wscan(queue[i][1])[queue[i][0]] = 1; |
| 1050 |
> |
} else |
| 1051 |
> |
setcolr(pscan(queue[i][1])[queue[i][0]], |
| 1052 |
> |
fbp[0], fbp[1], fbp[2]); |
| 1053 |
> |
if (zisnorm) |
| 1054 |
> |
zscan(queue[i][1])[queue[i][0]] = fbp[3]; |
| 1055 |
> |
else { |
| 1056 |
> |
vx = (queue[i][0]+.5)/hresolu + ourview.hoff - .5; |
| 1057 |
> |
vy = (queue[i][1]+.5)/vresolu + ourview.voff - .5; |
| 1058 |
> |
zscan(queue[i][1])[queue[i][0]] = fbp[3] / sqrt(1. + |
| 1059 |
> |
vx*vx*ourview.hn2 + vy*vy*ourview.vn2); |
| 1060 |
> |
} |
| 1061 |
|
fbp += 4; |
| 1062 |
|
} |
| 1063 |
|
queuesiz = 0; |