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#include <ctype.h> |
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#include "objutil.h" |
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typedef int VNDX[3]; /* vertex index (point,map,normal) */ |
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#define MAXARG 512 /* maximum # arguments in a statement */ |
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static int lineno; /* current line number */ |
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return(nambuf); |
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} |
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< |
/* Add a new face to scene */ |
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/* add a new face to scene */ |
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static int |
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add_face(Scene *sc, const VNDX ondx, int ac, char *av[]) |
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{ |
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Face *f; |
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> |
VNDX vdef[4]; |
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> |
VNDX *varr = vdef; |
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Face *f = NULL; |
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int i; |
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if (ac < 3) |
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if (ac < 3) /* legal polygon? */ |
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return(0); |
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f = (Face *)emalloc(sizeof(Face)+sizeof(VertEnt)*(ac-3)); |
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f->flags = 0; |
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f->nv = ac; |
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f->grp = sc->lastgrp; |
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f->mat = sc->lastmat; |
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for (i = 0; i < ac; i++) { /* add each vertex */ |
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VNDX vin; |
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int j; |
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if (!cvtndx(vin, sc, ondx, av[i])) { |
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efree((char *)f); |
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return(0); |
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} |
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f->v[i].vid = vin[0]; |
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f->v[i].tid = vin[1]; |
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f->v[i].nid = vin[2]; |
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f->v[i].fnext = NULL; |
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for (j = i; j-- > 0; ) |
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if (f->v[j].vid == vin[0]) |
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break; |
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if (j < 0) { /* first occurrence? */ |
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f->v[i].fnext = sc->vert[vin[0]].vflist; |
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sc->vert[vin[0]].vflist = f; |
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} else if (ac == 3) /* degenerate triangle? */ |
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f->flags |= FACE_DEGENERATE; |
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} |
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f->next = sc->flist; /* push onto face list */ |
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sc->flist = f; |
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sc->nfaces++; |
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/* check face area */ |
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if (!(f->flags & FACE_DEGENERATE) && faceArea(sc, f, NULL) <= FTINY) |
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f->flags |= FACE_DEGENERATE; |
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return(1); |
| 155 |
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if (ac > 4) /* need to allocate array? */ |
| 156 |
> |
varr = (VNDX *)emalloc(ac*sizeof(VNDX)); |
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> |
for (i = ac; i--; ) /* index each vertex */ |
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> |
if (!cvtndx(varr[i], sc, ondx, av[i])) |
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break; |
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if (i < 0) /* create face if indices OK */ |
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f = addFace(sc, varr, ac); |
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if (varr != vdef) |
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efree((char *)varr); |
| 164 |
> |
return(f != NULL); |
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} |
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/* Load a .OBJ file */ |
