| 19 |
|
int |
| 20 |
|
findName(const char *nm, const char **nmlist, int n) |
| 21 |
|
{ |
| 22 |
< |
register int i; |
| 22 |
> |
int i; |
| 23 |
|
|
| 24 |
|
for (i = n; i-- > 0; ) |
| 25 |
|
if (!strcmp(nmlist[i], nm)) |
| 322 |
|
goto linkerr; |
| 323 |
|
/* XXX doesn't allow for multiple references to prev in face */ |
| 324 |
|
f->v[j].vid = repl; /* replace vertex itself */ |
| 325 |
< |
if (faceArea(sc, f, NULL) <= FTINY) |
| 325 |
> |
if (faceArea(sc, f, NULL) <= FTINY*FTINY) |
| 326 |
|
f->flags |= FACE_DEGENERATE; |
| 327 |
|
if (f->v[j].tid >= 0) /* replace texture if appropriate */ |
| 328 |
|
for (i = 0; repl_tex[i] >= 0; i++) { |
| 599 |
|
return(sc); |
| 600 |
|
} |
| 601 |
|
|
| 602 |
+ |
/* Add a vertex to a scene */ |
| 603 |
+ |
int |
| 604 |
+ |
addVertex(Scene *sc, double x, double y, double z) |
| 605 |
+ |
{ |
| 606 |
+ |
sc->vert = chunk_alloc(Vertex, sc->vert, sc->nverts); |
| 607 |
+ |
sc->vert[sc->nverts].p[0] = x; |
| 608 |
+ |
sc->vert[sc->nverts].p[1] = y; |
| 609 |
+ |
sc->vert[sc->nverts].p[2] = z; |
| 610 |
+ |
sc->vert[sc->nverts].vflist = NULL; |
| 611 |
+ |
return(sc->nverts++); |
| 612 |
+ |
} |
| 613 |
+ |
|
| 614 |
+ |
/* Add a texture coordinate to a scene */ |
| 615 |
+ |
int |
| 616 |
+ |
addTexture(Scene *sc, double u, double v) |
| 617 |
+ |
{ |
| 618 |
+ |
sc->tex = chunk_alloc(TexCoord, sc->tex, sc->ntex); |
| 619 |
+ |
sc->tex[sc->ntex].u = u; |
| 620 |
+ |
sc->tex[sc->ntex].v = v; |
| 621 |
+ |
return(sc->ntex++); |
| 622 |
+ |
} |
| 623 |
+ |
|
| 624 |
+ |
/* Add a surface normal to a scene */ |
| 625 |
+ |
int |
| 626 |
+ |
addNormal(Scene *sc, double xn, double yn, double zn) |
| 627 |
+ |
{ |
| 628 |
+ |
FVECT nrm; |
| 629 |
+ |
|
| 630 |
+ |
nrm[0] = xn; nrm[1] = yn; nrm[2] = zn; |
| 631 |
+ |
if (normalize(nrm) == .0) |
| 632 |
+ |
return(-1); |
| 633 |
+ |
sc->norm = chunk_alloc(Normal, sc->norm, sc->nnorms); |
| 634 |
+ |
VCOPY(sc->norm[sc->nnorms], nrm); |
| 635 |
+ |
return(sc->nnorms++); |
| 636 |
+ |
} |
| 637 |
+ |
|
| 638 |
+ |
/* Set current (last) group */ |
| 639 |
+ |
void |
| 640 |
+ |
setGroup(Scene *sc, const char *nm) |
| 641 |
+ |
{ |
| 642 |
+ |
sc->lastgrp = findName(nm, (const char **)sc->grpname, sc->ngrps); |
| 643 |
+ |
if (sc->lastgrp >= 0) |
| 644 |
+ |
return; |
| 645 |
+ |
sc->grpname = chunk_alloc(char *, sc->grpname, sc->ngrps); |
| 646 |
+ |
sc->grpname[sc->lastgrp=sc->ngrps++] = savqstr((char *)nm); |
| 647 |
+ |
} |
| 648 |
+ |
|
| 649 |
+ |
/* Set current (last) material */ |
| 650 |
+ |
void |
| 651 |
+ |
setMaterial(Scene *sc, const char *nm) |
| 652 |
+ |
{ |
| 653 |
+ |
sc->lastmat = findName(nm, (const char **)sc->matname, sc->nmats); |
| 654 |
+ |
if (sc->lastmat >= 0) |
| 655 |
+ |
return; |
| 656 |
+ |
sc->matname = chunk_alloc(char *, sc->matname, sc->nmats); |
| 657 |
+ |
sc->matname[sc->lastmat=sc->nmats++] = savqstr((char *)nm); |
| 658 |
+ |
} |
| 659 |
+ |
|
| 660 |
+ |
/* Add new face to a scene */ |
| 661 |
+ |
Face * |
| 662 |
+ |
addFace(Scene *sc, VNDX vid[], int nv) |
| 663 |
+ |
{ |
| 664 |
+ |
Face *f; |
| 665 |
+ |
int i; |
| 666 |
+ |
|
| 667 |
+ |
if (nv < 3) |
| 668 |
+ |
return(NULL); |
| 669 |
+ |
f = (Face *)emalloc(sizeof(Face)+sizeof(VertEnt)*(nv-3)); |
| 670 |
+ |
f->flags = 0; |
| 671 |
+ |
f->nv = nv; |
| 672 |
+ |
f->grp = sc->lastgrp; |
| 673 |
+ |
f->mat = sc->lastmat; |
| 674 |
+ |
for (i = 0; i < nv; i++) { /* add each vertex */ |
| 675 |
+ |
int j; |
| 676 |
+ |
f->v[i].vid = vid[i][0]; |
| 677 |
+ |
f->v[i].tid = vid[i][1]; |
| 678 |
+ |
f->v[i].nid = vid[i][2]; |
| 679 |
+ |
f->v[i].fnext = NULL; |
| 680 |
+ |
for (j = i; j-- > 0; ) |
| 681 |
+ |
if (f->v[j].vid == vid[i][0]) |
| 682 |
+ |
break; |
| 683 |
+ |
if (j < 0) { /* first occurrence? */ |
| 684 |
+ |
f->v[i].fnext = sc->vert[vid[i][0]].vflist; |
| 685 |
+ |
sc->vert[vid[i][0]].vflist = f; |
| 686 |
+ |
} else if (nv == 3) /* degenerate triangle? */ |
| 687 |
+ |
f->flags |= FACE_DEGENERATE; |
| 688 |
+ |
} |
| 689 |
+ |
f->next = sc->flist; /* push onto face list */ |
| 690 |
+ |
sc->flist = f; |
| 691 |
+ |
sc->nfaces++; |
| 692 |
+ |
/* check face area */ |
| 693 |
+ |
if (!(f->flags & FACE_DEGENERATE) && faceArea(sc, f, NULL) <= FTINY*FTINY) |
| 694 |
+ |
f->flags |= FACE_DEGENERATE; |
| 695 |
+ |
return(f); |
| 696 |
+ |
} |
| 697 |
+ |
|
| 698 |
|
/* Duplicate a scene */ |
| 699 |
|
Scene * |
| 700 |
|
dupScene(const Scene *osc) |
| 760 |
|
return(sc); |
| 761 |
|
} |
| 762 |
|
|
| 763 |
+ |
#define MAXAC 100 |
| 764 |
+ |
|
| 765 |
|
/* Transform entire scene */ |
| 766 |
|
int |
| 767 |
|
xfScene(Scene *sc, int xac, char *xav[]) |
| 768 |
|
{ |
| 769 |
+ |
char comm[24+MAXAC*8]; |
| 770 |
+ |
char *cp; |
| 771 |
|
XF myxf; |
| 772 |
|
FVECT vec; |
| 773 |
|
int i; |
| 790 |
|
vec[0] /= myxf.sca; vec[1] /= myxf.sca; vec[2] /= myxf.sca; |
| 791 |
|
VCOPY(sc->norm[i], vec); |
| 792 |
|
} |
| 793 |
+ |
/* add comment */ |
| 794 |
+ |
cp = strcpy(comm, "Transformed by:"); |
| 795 |
+ |
for (i = 0; i < xac; i++) { |
| 796 |
+ |
while (*cp) cp++; |
| 797 |
+ |
*cp++ = ' '; |
| 798 |
+ |
strcpy(cp, xav[i]); |
| 799 |
+ |
} |
| 800 |
+ |
addComment(sc, comm); |
| 801 |
|
return(xac); /* all done */ |
| 802 |
|
} |
| 803 |
|
|
| 804 |
|
/* Ditto, using transform string rather than pre-parsed words */ |
| 697 |
– |
#define MAXAC 100 |
| 805 |
|
int |
| 806 |
|
xfmScene(Scene *sc, const char *xfm) |
| 807 |
|
{ |
