| 1 |
– |
/* Copyright (c) 1994 Regents of the University of California */ |
| 2 |
– |
|
| 1 |
|
#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 6 |
– |
|
| 4 |
|
/* |
| 5 |
|
* Convert a Wavefront .obj file to Radiance format. |
| 6 |
|
* |
| 557 |
|
BARYCCM bvecs; |
| 558 |
|
FLOAT bcoor[3][3]; |
| 559 |
|
int texOK, patOK; |
| 560 |
+ |
int flatness; |
| 561 |
|
register int i; |
| 562 |
|
|
| 563 |
|
if ((mod = getmtl()) == NULL) |
| 566 |
|
if (!cvtndx(v1i, v1) || !cvtndx(v2i, v2) || !cvtndx(v3i, v3)) |
| 567 |
|
return(0); |
| 568 |
|
/* compute barycentric coordinates */ |
| 569 |
< |
if (!flatten && v1i[2]>=0 && v2i[2]>=0 && v3i[2]>=0) |
| 570 |
< |
switch (flat_tri(vlist[v1i[0]], vlist[v2i[0]], vlist[v3i[0]], |
| 571 |
< |
vnlist[v1i[2]], vnlist[v2i[2]], vnlist[v3i[2]])) { |
| 574 |
< |
case DEGEN: /* zero area */ |
| 575 |
< |
return(-1); |
| 576 |
< |
case RVFLAT: /* reversed normals, but flat */ |
| 577 |
< |
case ISFLAT: /* smoothing unnecessary */ |
| 578 |
< |
texOK = 0; |
| 579 |
< |
break; |
| 580 |
< |
case RVBENT: /* reversed normals with smoothing */ |
| 581 |
< |
case ISBENT: /* proper smoothing */ |
| 582 |
< |
texOK = 1; |
| 583 |
< |
break; |
| 584 |
< |
} |
| 569 |
> |
if (v1i[2]>=0 && v2i[2]>=0 && v3i[2]>=0) |
| 570 |
> |
flatness = flat_tri(vlist[v1i[0]], vlist[v2i[0]], vlist[v3i[0]], |
| 571 |
> |
vnlist[v1i[2]], vnlist[v2i[2]], vnlist[v3i[2]]); |
| 572 |
|
else |
| 573 |
+ |
flatness = ISFLAT; |
| 574 |
+ |
|
| 575 |
+ |
switch (flatness) { |
| 576 |
+ |
case DEGEN: /* zero area */ |
| 577 |
+ |
return(-1); |
| 578 |
+ |
case RVFLAT: /* reversed normals, but flat */ |
| 579 |
+ |
case ISFLAT: /* smoothing unnecessary */ |
| 580 |
|
texOK = 0; |
| 581 |
+ |
break; |
| 582 |
+ |
case RVBENT: /* reversed normals with smoothing */ |
| 583 |
+ |
case ISBENT: /* proper smoothing */ |
| 584 |
+ |
texOK = 1; |
| 585 |
+ |
break; |
| 586 |
+ |
} |
| 587 |
+ |
if (flatten) |
| 588 |
+ |
texOK = 0; |
| 589 |
|
#ifdef TEXMAPS |
| 590 |
|
patOK = mapname[0] && (v1i[1]>=0 && v2i[1]>=0 && v3i[1]>=0); |
| 591 |
|
#else |
| 623 |
|
put_baryc(&bvecs, bcoor, 2); |
| 624 |
|
} |
| 625 |
|
#endif |
| 626 |
< |
/* put out triangle */ |
| 626 |
> |
/* put out (reversed) triangle */ |
| 627 |
|
printf("\n%s polygon %s.%d\n", mod, getonm(), faceno); |
| 628 |
|
printf("0\n0\n9\n"); |
| 629 |
< |
pvect(vlist[v1i[0]]); |
| 630 |
< |
pvect(vlist[v2i[0]]); |
| 631 |
< |
pvect(vlist[v3i[0]]); |
| 632 |
< |
|
| 629 |
> |
if (flatness == RVFLAT || flatness == RVBENT) { |
| 630 |
> |
pvect(vlist[v3i[0]]); |
| 631 |
> |
pvect(vlist[v2i[0]]); |
| 632 |
> |
pvect(vlist[v1i[0]]); |
| 633 |
> |
} else { |
| 634 |
> |
pvect(vlist[v1i[0]]); |
| 635 |
> |
pvect(vlist[v2i[0]]); |
| 636 |
> |
pvect(vlist[v3i[0]]); |
| 637 |
> |
} |
| 638 |
|
return(1); |
| 639 |
|
} |
| 640 |
|
|
| 642 |
|
freeverts() /* free all vertices */ |
| 643 |
|
{ |
| 644 |
|
if (nvs) { |
| 645 |
< |
free((char *)vlist); |
| 645 |
> |
free((void *)vlist); |
| 646 |
|
nvs = 0; |
| 647 |
|
} |
| 648 |
|
if (nvts) { |
| 649 |
< |
free((char *)vtlist); |
| 649 |
> |
free((void *)vtlist); |
| 650 |
|
nvts = 0; |
| 651 |
|
} |
| 652 |
|
if (nvns) { |
| 653 |
< |
free((char *)vnlist); |
| 653 |
> |
free((void *)vnlist); |
| 654 |
|
nvns = 0; |
| 655 |
|
} |
| 656 |
|
} |
