| 12 |
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#include "rtio.h" |
| 13 |
|
#include "rterror.h" |
| 14 |
|
#include "fvect.h" |
| 15 |
< |
#include <stdlib.h> |
| 15 |
> |
#include "paths.h" |
| 16 |
|
#include <ctype.h> |
| 17 |
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#include "objutil.h" |
| 18 |
|
|
| 19 |
– |
typedef int VNDX[3]; /* vertex index (point,map,normal) */ |
| 20 |
– |
|
| 19 |
|
#define MAXARG 512 /* maximum # arguments in a statement */ |
| 20 |
|
|
| 21 |
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static int lineno; /* current line number */ |
| 113 |
|
error(USER, errmsg); |
| 114 |
|
} |
| 115 |
|
|
| 118 |
– |
/* Add a vertex to our scene */ |
| 119 |
– |
static void |
| 120 |
– |
add_vertex(Scene *sc, double x, double y, double z) |
| 121 |
– |
{ |
| 122 |
– |
sc->vert = chunk_alloc(Vertex, sc->vert, sc->nverts); |
| 123 |
– |
sc->vert[sc->nverts].p[0] = x; |
| 124 |
– |
sc->vert[sc->nverts].p[1] = y; |
| 125 |
– |
sc->vert[sc->nverts].p[2] = z; |
| 126 |
– |
sc->vert[sc->nverts++].vflist = NULL; |
| 127 |
– |
} |
| 128 |
– |
|
| 129 |
– |
/* Add a texture coordinate to our scene */ |
| 130 |
– |
static void |
| 131 |
– |
add_texture(Scene *sc, double u, double v) |
| 132 |
– |
{ |
| 133 |
– |
sc->tex = chunk_alloc(TexCoord, sc->tex, sc->ntex); |
| 134 |
– |
sc->tex[sc->ntex].u = u; |
| 135 |
– |
sc->tex[sc->ntex].v = v; |
| 136 |
– |
sc->ntex++; |
| 137 |
– |
} |
| 138 |
– |
|
| 139 |
– |
/* Add a surface normal to our scene */ |
| 140 |
– |
static int |
| 141 |
– |
add_normal(Scene *sc, double xn, double yn, double zn) |
| 142 |
– |
{ |
| 143 |
– |
FVECT nrm; |
| 144 |
– |
|
| 145 |
– |
nrm[0] = xn; nrm[1] = yn; nrm[2] = zn; |
| 146 |
– |
if (normalize(nrm) == .0) |
| 147 |
– |
return(0); |
| 148 |
– |
sc->norm = chunk_alloc(Normal, sc->norm, sc->nnorms); |
| 149 |
– |
VCOPY(sc->norm[sc->nnorms], nrm); |
| 150 |
– |
sc->nnorms++; |
| 151 |
– |
return(1); |
| 152 |
– |
} |
| 153 |
– |
|
| 116 |
|
/* combine multi-group name into single identifier w/o spaces */ |
| 117 |
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static char * |
| 118 |
|
group_name(int ac, char **av) |
| 141 |
|
return(nambuf); |
| 142 |
|
} |
| 143 |
|
|
| 144 |
< |
/* set current group */ |
| 183 |
< |
static void |
| 184 |
< |
set_group(Scene *sc, const char *nm) |
| 185 |
< |
{ |
| 186 |
< |
sc->lastgrp = findName(nm, (const char **)sc->grpname, sc->ngrps); |
| 187 |
< |
if (sc->lastgrp >= 0) |
| 188 |
< |
return; |
| 189 |
< |
sc->grpname = chunk_alloc(char *, sc->grpname, sc->ngrps); |
| 190 |
< |
sc->grpname[sc->lastgrp=sc->ngrps++] = savqstr((char *)nm); |
| 191 |
< |
} |
| 192 |
< |
|
| 193 |
< |
/* set current material */ |
| 194 |
< |
static void |
| 195 |
< |
set_material(Scene *sc, const char *nm) |
| 196 |
< |
{ |
| 197 |
< |
sc->lastmat = findName(nm, (const char **)sc->matname, sc->nmats); |
| 198 |
< |
if (sc->lastmat >= 0) |
| 199 |
< |
return; |
| 200 |
< |
sc->matname = chunk_alloc(char *, sc->matname, sc->nmats); |
| 201 |
< |
sc->matname[sc->lastmat=sc->nmats++] = savqstr((char *)nm); |
| 202 |
< |
} |
| 203 |
< |
|
| 204 |
< |
/* Add a new face to scene */ |
| 144 |
> |
/* add a new face to scene */ |
| 145 |
|
static int |
| 146 |
|
add_face(Scene *sc, const VNDX ondx, int ac, char *av[]) |
| 147 |
|
{ |
| 148 |
< |
Face *f; |
| 148 |
> |
VNDX vdef[4]; |
| 149 |
> |
VNDX *varr = vdef; |
| 150 |
> |
Face *f = NULL; |
| 151 |
|
int i; |
| 152 |
|
|
| 153 |
< |
if (ac < 3) |
| 153 |
> |
if (ac < 3) /* legal polygon? */ |
| 154 |
|
return(0); |
| 155 |
< |
f = (Face *)emalloc(sizeof(Face)+sizeof(VertEnt)*(ac-3)); |
| 156 |
< |
f->flags = 0; |
| 157 |
< |
f->nv = ac; |
| 158 |
< |
f->grp = sc->lastgrp; |
| 159 |
< |
f->mat = sc->lastmat; |
| 160 |
< |
for (i = 0; i < ac; i++) { /* add each vertex */ |
| 161 |
< |
VNDX vin; |
| 162 |
< |
int j; |
| 163 |
< |
if (!cvtndx(vin, sc, ondx, av[i])) { |
| 164 |
< |
efree((char *)f); |
| 223 |
< |
return(0); |
| 224 |
< |
} |
| 225 |
< |
f->v[i].vid = vin[0]; |
| 226 |
< |
f->v[i].tid = vin[1]; |
| 227 |
< |
f->v[i].nid = vin[2]; |
| 228 |
< |
f->v[i].fnext = NULL; |
| 229 |
< |
for (j = i; j-- > 0; ) |
| 230 |
< |
if (f->v[j].vid == vin[0]) |
| 231 |
< |
break; |
| 232 |
< |
if (j < 0) { /* first occurrence? */ |
| 233 |
< |
f->v[i].fnext = sc->vert[vin[0]].vflist; |
| 234 |
< |
sc->vert[vin[0]].vflist = f; |
| 235 |
< |
} else if (ac == 3) /* degenerate triangle? */ |
| 236 |
< |
f->flags |= FACE_DEGENERATE; |
| 237 |
< |
} |
| 238 |
< |
f->next = sc->flist; /* push onto face list */ |
| 239 |
< |
sc->flist = f; |
| 240 |
< |
sc->nfaces++; |
| 241 |
< |
/* check face area */ |
| 242 |
< |
if (!(f->flags & FACE_DEGENERATE) && faceArea(sc, f, NULL) <= FTINY) |
| 243 |
< |
f->flags |= FACE_DEGENERATE; |
| 244 |
< |
return(1); |
| 155 |
> |
if (ac > 4) /* need to allocate array? */ |
| 156 |
> |
varr = (VNDX *)emalloc(ac*sizeof(VNDX)); |
| 157 |
> |
for (i = ac; i--; ) /* index each vertex */ |
| 158 |
> |
if (!cvtndx(varr[i], sc, ondx, av[i])) |
| 159 |
> |
break; |
| 160 |
> |
if (i < 0) /* create face if indices OK */ |
| 161 |
> |
f = addFace(sc, varr, ac); |
| 162 |
> |
if (varr != vdef) |
| 163 |
> |
efree((char *)varr); |
| 164 |
> |
return(f != NULL); |
| 165 |
|
} |
| 166 |
|
|
| 167 |
|
/* Load a .OBJ file */ |
| 208 |
|
syntax(fspec, "bad vertex"); |
| 209 |
|
goto failure; |
| 210 |
|
} |
| 211 |
< |
add_vertex(sc, atof(argv[1]), |
| 211 |
> |
addVertex(sc, atof(argv[1]), |
| 212 |
|
atof(argv[2]), |
| 213 |
|
atof(argv[3])); |
| 214 |
|
break; |
| 217 |
|
goto unknown; |
| 218 |
|
if (badarg(argc-1,argv+1,"ff")) |
| 219 |
|
goto unknown; |
| 220 |
< |
add_texture(sc, atof(argv[1]), atof(argv[2])); |
| 220 |
> |
addTexture(sc, atof(argv[1]), atof(argv[2])); |
| 221 |
|
break; |
| 222 |
|
case 'n': /* normal */ |
| 223 |
|
if (argv[0][2]) |
| 226 |
|
syntax(fspec, "bad normal"); |
| 227 |
|
goto failure; |
| 228 |
|
} |
| 229 |
< |
if (!add_normal(sc, atof(argv[1]), |
| 229 |
> |
if (addNormal(sc, atof(argv[1]), |
| 230 |
|
atof(argv[2]), |
| 231 |
< |
atof(argv[3]))) { |
| 231 |
> |
atof(argv[3])) < 0) { |
| 232 |
|
syntax(fspec, "zero normal"); |
| 233 |
|
goto failure; |
| 234 |
|
} |
| 254 |
|
syntax(fspec, "bad # arguments"); |
| 255 |
|
goto failure; |
| 256 |
|
} |
| 257 |
< |
set_material(sc, argv[1]); |
| 257 |
> |
setMaterial(sc, argv[1]); |
| 258 |
|
break; |
| 259 |
|
case 'o': /* object name */ |
| 260 |
|
case 'g': /* group name */ |
| 262 |
|
syntax(fspec, "missing argument"); |
| 263 |
|
goto failure; |
| 264 |
|
} |
| 265 |
< |
set_group(sc, group_name(argc-1, argv+1)); |
| 265 |
> |
setGroup(sc, group_name(argc-1, argv+1)); |
| 266 |
|
break; |
| 267 |
|
case '#': /* comment */ |
| 268 |
|
continue; |
| 276 |
|
fprintf(stderr, " %8d statements\r", nstats); |
| 277 |
|
} |
| 278 |
|
#if POPEN_SUPPORT |
| 279 |
< |
if (fspec[0] == '!') |
| 280 |
< |
pclose(fp); |
| 281 |
< |
else |
| 279 |
> |
if (fspec[0] == '!') { |
| 280 |
> |
if (pclose(fp) != 0) { |
| 281 |
> |
sprintf(errmsg, "Bad return status from: %s", fspec+1); |
| 282 |
> |
error(USER, errmsg); |
| 283 |
> |
freeScene(sc); |
| 284 |
> |
return(NULL); |
| 285 |
> |
} |
| 286 |
> |
} else |
| 287 |
|
#endif |
| 288 |
|
if (fp != stdin) |
| 289 |
|
fclose(fp); |
| 290 |
+ |
if (verbose) |
| 291 |
+ |
fprintf(stderr, "Read %d statements\n", nstats); |
| 292 |
|
sprintf(buf, "%d statements read from \"%s\"", nstats, fspec); |
| 293 |
|
addComment(sc, buf); |
| 294 |
|
if (nunknown) { |
