599 |
|
return(sc); |
600 |
|
} |
601 |
|
|
602 |
< |
/* Add a vertex to our scene */ |
602 |
> |
/* Add a vertex to a scene */ |
603 |
|
int |
604 |
|
addVertex(Scene *sc, double x, double y, double z) |
605 |
|
{ |
611 |
|
return(sc->nverts++); |
612 |
|
} |
613 |
|
|
614 |
< |
/* Add a texture coordinate to our scene */ |
614 |
> |
/* Add a texture coordinate to a scene */ |
615 |
|
int |
616 |
|
addTexture(Scene *sc, double u, double v) |
617 |
|
{ |
621 |
|
return(sc->ntex++); |
622 |
|
} |
623 |
|
|
624 |
< |
/* Add a surface normal to our scene */ |
624 |
> |
/* Add a surface normal to a scene */ |
625 |
|
int |
626 |
|
addNormal(Scene *sc, double xn, double yn, double zn) |
627 |
|
{ |
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) |
694 |
+ |
f->flags |= FACE_DEGENERATE; |
695 |
+ |
return(f); |
696 |
|
} |
697 |
|
|
698 |
|
/* Duplicate a scene */ |