| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: mgf2inv.c,v 2.3 2012/05/15 15:36:33 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* Convert MGF to Inventor file. |
| 6 |
* |
| 7 |
* December 1995 Greg Ward |
| 8 |
*/ |
| 9 |
|
| 10 |
#include <stdio.h> |
| 11 |
|
| 12 |
#include <stdlib.h> |
| 13 |
|
| 14 |
#include <math.h> |
| 15 |
|
| 16 |
#include <ctype.h> |
| 17 |
|
| 18 |
#include <string.h> |
| 19 |
|
| 20 |
#include "mgf_parser.h" |
| 21 |
|
| 22 |
#include "lookup.h" |
| 23 |
|
| 24 |
#define O_INV1 1 /* Inventor 1.0 output */ |
| 25 |
#define O_INV2 2 /* Inventor 2.0 output */ |
| 26 |
#define O_VRML1 3 /* VRML 1.0 output */ |
| 27 |
|
| 28 |
#define MAXID 48 /* maximum identifier length */ |
| 29 |
|
| 30 |
#define VERTFMT "%+16.9e %+16.9e %+16.9e\n%+6.3f %+6.3f %+6.3f" |
| 31 |
#define VZVECT "+0.000 +0.000 +0.000" |
| 32 |
#define VFLEN 92 /* total vertex string length */ |
| 33 |
#define MAXVERT 10240 /* maximum cached vertices */ |
| 34 |
|
| 35 |
#define setvkey(k,v) sprintf(k,VERTFMT,(v)->p[0],(v)->p[1],(v)->p[2],\ |
| 36 |
(v)->n[0],(v)->n[1],(v)->n[2]); |
| 37 |
|
| 38 |
char vlist[MAXVERT][VFLEN]; /* our vertex cache */ |
| 39 |
int nverts; /* current cache size */ |
| 40 |
|
| 41 |
LUTAB vert_tab = LU_SINIT(NULL,NULL); |
| 42 |
|
| 43 |
struct face { |
| 44 |
struct face *next; /* next face in list */ |
| 45 |
short nv; /* number of vertices */ |
| 46 |
short vl[3]; /* vertex index list (variable) */ |
| 47 |
} *flist, *flast; /* our face cache */ |
| 48 |
|
| 49 |
#define newface(n) (struct face *)malloc(sizeof(struct face) + \ |
| 50 |
((n) > 3 ? (n)-3 : 0)*sizeof(short)) |
| 51 |
#define freeface(f) free(f) |
| 52 |
|
| 53 |
#define TABSTOP 8 /* assumed number of characters per tab */ |
| 54 |
#define SHIFTW 2 /* nesting shift width */ |
| 55 |
#define MAXIND 15 /* maximum indent level */ |
| 56 |
|
| 57 |
char tabs[MAXIND*SHIFTW+1]; /* current tab-in string */ |
| 58 |
|
| 59 |
#define curmatname (c_cmname == NULL ? "mat" : to_id(c_cmname)) |
| 60 |
|
| 61 |
int outtype = O_INV2; /* output format */ |
| 62 |
|
| 63 |
int i_comment(int ac, char **av); |
| 64 |
int i_object(int ac, char **av); |
| 65 |
int i_xf(int ac, char **av); |
| 66 |
int put_xform(register XF_SPEC *spec); |
| 67 |
int put_material(void); |
| 68 |
int i_face(int ac, char **av); |
| 69 |
int i_sph(int ac, char **av); |
| 70 |
int i_cyl(int ac, char **av); |
| 71 |
char * to_id(register char *name); |
| 72 |
char * to_id(register char *name); |
| 73 |
void flush_cache(void); |
| 74 |
|
| 75 |
|
| 76 |
int |
| 77 |
main( |
| 78 |
int argc, |
| 79 |
char *argv[] |
| 80 |
) |
| 81 |
{ |
| 82 |
int i; |
| 83 |
/* initialize dispatch table */ |
| 84 |
mg_ehand[MG_E_COMMENT] = i_comment; /* we pass comments */ |
| 85 |
mg_ehand[MG_E_COLOR] = c_hcolor; /* they get color */ |
| 86 |
mg_ehand[MG_E_CMIX] = c_hcolor; /* they mix colors */ |
| 87 |
mg_ehand[MG_E_CSPEC] = c_hcolor; /* they get spectra */ |
| 88 |
mg_ehand[MG_E_CXY] = c_hcolor; /* they get chromaticities */ |
| 89 |
mg_ehand[MG_E_CCT] = c_hcolor; /* they get color temp's */ |
| 90 |
mg_ehand[MG_E_CYL] = i_cyl; /* we do cylinders */ |
| 91 |
mg_ehand[MG_E_ED] = c_hmaterial; /* they get emission */ |
| 92 |
mg_ehand[MG_E_FACE] = i_face; /* we do faces */ |
| 93 |
mg_ehand[MG_E_MATERIAL] = c_hmaterial; /* they get materials */ |
| 94 |
mg_ehand[MG_E_NORMAL] = c_hvertex; /* they get normals */ |
| 95 |
mg_ehand[MG_E_OBJECT] = i_object; /* we track object names */ |
| 96 |
mg_ehand[MG_E_POINT] = c_hvertex; /* they get points */ |
| 97 |
mg_ehand[MG_E_RD] = c_hmaterial; /* they get diffuse refl. */ |
| 98 |
mg_ehand[MG_E_RS] = c_hmaterial; /* they get specular refl. */ |
| 99 |
mg_ehand[MG_E_SIDES] = c_hmaterial; /* they get # sides */ |
| 100 |
mg_ehand[MG_E_SPH] = i_sph; /* we do spheres */ |
| 101 |
mg_ehand[MG_E_TD] = c_hmaterial; /* they get diffuse trans. */ |
| 102 |
mg_ehand[MG_E_TS] = c_hmaterial; /* they get specular trans. */ |
| 103 |
mg_ehand[MG_E_VERTEX] = c_hvertex; /* they get vertices */ |
| 104 |
mg_ehand[MG_E_XF] = i_xf; /* we track transforms */ |
| 105 |
mg_init(); /* initialize the parser */ |
| 106 |
/* get options and print format line */ |
| 107 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
| 108 |
if (!strcmp(argv[i], "-vrml")) |
| 109 |
outtype = O_VRML1; |
| 110 |
else if (!strcmp(argv[i], "-1")) |
| 111 |
outtype = O_INV1; |
| 112 |
else if (!strcmp(argv[i], "-2")) |
| 113 |
outtype = O_INV2; |
| 114 |
else |
| 115 |
goto userr; |
| 116 |
switch (outtype) { |
| 117 |
case O_INV1: |
| 118 |
printf("#Inventor V1.0 ascii\n"); |
| 119 |
break; |
| 120 |
case O_INV2: |
| 121 |
printf("#Inventor V2.0 ascii\n"); |
| 122 |
break; |
| 123 |
case O_VRML1: |
| 124 |
printf("#VRML V1.0 ascii\n"); |
| 125 |
break; |
| 126 |
} |
| 127 |
printf("## Translated from MGF Version %d.%d\n", MG_VMAJOR, MG_VMINOR); |
| 128 |
printf("Separator {\n"); /* begin root node */ |
| 129 |
/* general properties */ |
| 130 |
printf("MaterialBinding { value OVERALL }\n"); |
| 131 |
printf("NormalBinding { value PER_VERTEX_INDEXED }\n"); |
| 132 |
if (outtype != O_INV1) { |
| 133 |
printf("ShapeHints {\n"); |
| 134 |
printf("\tvertexOrdering CLOCKWISE\n"); |
| 135 |
printf("\tfaceType UNKNOWN_FACE_TYPE\n"); |
| 136 |
printf("}\n"); |
| 137 |
} |
| 138 |
if (i == argc) { /* load standard input */ |
| 139 |
if (mg_load(NULL) != MG_OK) |
| 140 |
exit(1); |
| 141 |
if (mg_nunknown) |
| 142 |
printf("## %s: %u unknown entities\n", |
| 143 |
argv[0], mg_nunknown); |
| 144 |
} |
| 145 |
/* load MGF files */ |
| 146 |
for ( ; i < argc; i++) { |
| 147 |
printf("## %s %s ##############################\n", |
| 148 |
argv[0], argv[i]); |
| 149 |
mg_nunknown = 0; |
| 150 |
if (mg_load(argv[i]) != MG_OK) |
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exit(1); |
| 152 |
if (mg_nunknown) |
| 153 |
printf("## %s %s: %u unknown entities\n", |
| 154 |
argv[0], argv[i], mg_nunknown); |
| 155 |
} |
| 156 |
flush_cache(); /* flush face cache, just in case */ |
| 157 |
printf("}\n"); /* close root node */ |
| 158 |
exit(0); |
| 159 |
userr: |
| 160 |
fprintf(stderr, "%s: [-1|-2|-vrml] [file] ..\n", argv[0]); |
| 161 |
exit(1); |
| 162 |
} |
| 163 |
|
| 164 |
|
| 165 |
void |
| 166 |
indent( /* indent in or out */ |
| 167 |
int deeper |
| 168 |
) |
| 169 |
{ |
| 170 |
static int level; /* current nesting level */ |
| 171 |
register int i; |
| 172 |
register char *cp; |
| 173 |
|
| 174 |
if (deeper) level++; /* in or out? */ |
| 175 |
else if (level > 0) level--; |
| 176 |
/* compute actual shift */ |
| 177 |
if ((i = level) > MAXIND) i = MAXIND; |
| 178 |
cp = tabs; |
| 179 |
for (i *= SHIFTW; i >= TABSTOP; i -= TABSTOP) |
| 180 |
*cp++ = '\t'; |
| 181 |
while (i--) |
| 182 |
*cp++ = ' '; |
| 183 |
*cp = '\0'; |
| 184 |
} |
| 185 |
|
| 186 |
|
| 187 |
int |
| 188 |
i_comment( /* transfer comment as is */ |
| 189 |
int ac, |
| 190 |
char **av |
| 191 |
) |
| 192 |
{ |
| 193 |
fputs(tabs, stdout); |
| 194 |
putchar('#'); /* Inventor comment character */ |
| 195 |
while (--ac > 0) { |
| 196 |
putchar(' '); |
| 197 |
fputs(*++av, stdout); |
| 198 |
} |
| 199 |
putchar('\n'); |
| 200 |
return(MG_OK); |
| 201 |
} |
| 202 |
|
| 203 |
|
| 204 |
int |
| 205 |
i_object( /* group object name */ |
| 206 |
int ac, |
| 207 |
char **av |
| 208 |
) |
| 209 |
{ |
| 210 |
static int objnest; |
| 211 |
|
| 212 |
flush_cache(); /* flush cached objects */ |
| 213 |
if (ac == 2) { /* start group */ |
| 214 |
printf("%sDEF %s Group {\n", tabs, to_id(av[1])); |
| 215 |
indent(1); |
| 216 |
objnest++; |
| 217 |
return(MG_OK); |
| 218 |
} |
| 219 |
if (ac == 1) { /* end group */ |
| 220 |
if (--objnest < 0) |
| 221 |
return(MG_ECNTXT); |
| 222 |
indent(0); |
| 223 |
fputs(tabs, stdout); |
| 224 |
fputs("}\n", stdout); |
| 225 |
return(MG_OK); |
| 226 |
} |
| 227 |
return(MG_EARGC); |
| 228 |
} |
| 229 |
|
| 230 |
|
| 231 |
int |
| 232 |
i_xf( /* transform object(s) */ |
| 233 |
int ac, |
| 234 |
char **av |
| 235 |
) |
| 236 |
{ |
| 237 |
static long xfid; |
| 238 |
register XF_SPEC *spec; |
| 239 |
|
| 240 |
flush_cache(); /* flush cached objects */ |
| 241 |
if (ac == 1) { /* end of transform */ |
| 242 |
if ((spec = xf_context) == NULL) |
| 243 |
return(MG_ECNTXT); |
| 244 |
indent(0); /* close original segment */ |
| 245 |
printf("%s}\n", tabs); |
| 246 |
indent(0); |
| 247 |
printf("%s}\n", tabs); |
| 248 |
if (spec->xarr != NULL) { /* check for iteration */ |
| 249 |
register struct xf_array *ap = spec->xarr; |
| 250 |
register int n; |
| 251 |
|
| 252 |
ap->aarg[ap->ndim-1].i = 1; /* iterate array */ |
| 253 |
for ( ; ; ) { |
| 254 |
n = ap->ndim-1; |
| 255 |
while (ap->aarg[n].i < ap->aarg[n].n) { |
| 256 |
sprintf(ap->aarg[n].arg, "%d", |
| 257 |
ap->aarg[n].i); |
| 258 |
printf("%sSeparator {\n", tabs); |
| 259 |
indent(1); |
| 260 |
(void)put_xform(spec); |
| 261 |
printf("%sUSE _xf%ld\n", tabs, |
| 262 |
spec->xid); |
| 263 |
indent(0); |
| 264 |
printf("%s}\n", tabs); |
| 265 |
++ap->aarg[n].i; |
| 266 |
} |
| 267 |
ap->aarg[n].i = 0; |
| 268 |
(void)strcpy(ap->aarg[n].arg, "0"); |
| 269 |
while (n-- && ++ap->aarg[n].i >= ap->aarg[n].n) { |
| 270 |
ap->aarg[n].i = 0; |
| 271 |
(void)strcpy(ap->aarg[n].arg, "0"); |
| 272 |
} |
| 273 |
if (n < 0) |
| 274 |
break; |
| 275 |
sprintf(ap->aarg[n].arg, "%d", ap->aarg[n].i); |
| 276 |
} |
| 277 |
} |
| 278 |
/* pop transform */ |
| 279 |
xf_context = spec->prev; |
| 280 |
free_xf(spec); |
| 281 |
return(MG_OK); |
| 282 |
} |
| 283 |
/* else allocate new transform */ |
| 284 |
if ((spec = new_xf(ac-1, av+1)) == NULL) |
| 285 |
return(MG_EMEM); |
| 286 |
spec->xid = ++xfid; /* assign unique ID */ |
| 287 |
spec->prev = xf_context; /* push onto stack */ |
| 288 |
xf_context = spec; |
| 289 |
/* translate xf specification */ |
| 290 |
printf("%sSeparator {\n", tabs); |
| 291 |
indent(1); |
| 292 |
if (put_xform(spec) < 0) |
| 293 |
return(MG_ETYPE); |
| 294 |
printf("%sDEF _xf%ld Group {\n", tabs, spec->xid); /* begin */ |
| 295 |
indent(1); |
| 296 |
return(MG_OK); |
| 297 |
} |
| 298 |
|
| 299 |
|
| 300 |
int |
| 301 |
put_xform( /* translate and print transform */ |
| 302 |
register XF_SPEC *spec |
| 303 |
) |
| 304 |
{ |
| 305 |
register char **av; |
| 306 |
register int n; |
| 307 |
|
| 308 |
n = xf_ac(spec) - xf_ac(spec->prev); |
| 309 |
if (xf(&spec->xf, n, av=xf_av(spec)) != n) |
| 310 |
return(-1); |
| 311 |
printf("%sMatrixTransform {\n", tabs); |
| 312 |
indent(1); |
| 313 |
printf("%s# xf", tabs); /* put out original as comment */ |
| 314 |
while (n--) { |
| 315 |
putchar(' '); |
| 316 |
fputs(*av++, stdout); |
| 317 |
} |
| 318 |
putchar('\n'); /* put out computed matrix */ |
| 319 |
printf("%smatrix %13.9g %13.9g %13.9g %13.9g\n", tabs, |
| 320 |
spec->xf.xfm[0][0], spec->xf.xfm[0][1], |
| 321 |
spec->xf.xfm[0][2], spec->xf.xfm[0][3]); |
| 322 |
for (n = 1; n < 4; n++) |
| 323 |
printf("%s %13.9g %13.9g %13.9g %13.9g\n", tabs, |
| 324 |
spec->xf.xfm[n][0], spec->xf.xfm[n][1], |
| 325 |
spec->xf.xfm[n][2], spec->xf.xfm[n][3]); |
| 326 |
indent(0); |
| 327 |
printf("%s}\n", tabs); |
| 328 |
return(0); |
| 329 |
} |
| 330 |
|
| 331 |
|
| 332 |
int |
| 333 |
put_material(void) /* put out current material */ |
| 334 |
{ |
| 335 |
char *mname = curmatname; |
| 336 |
float rgbval[3]; |
| 337 |
|
| 338 |
if (!c_cmaterial->clock) { /* current, just use it */ |
| 339 |
printf("%sUSE %s\n", tabs, mname); |
| 340 |
return(0); |
| 341 |
} |
| 342 |
/* else update definition */ |
| 343 |
printf("%sDEF %s Group {\n", tabs, mname); |
| 344 |
indent(1); |
| 345 |
printf("%sMaterial {\n", tabs); |
| 346 |
indent(1); |
| 347 |
ccy2rgb(&c_cmaterial->rd_c, c_cmaterial->rd, rgbval); |
| 348 |
printf("%sambientColor %.4f %.4f %.4f\n", tabs, |
| 349 |
rgbval[0], rgbval[1], rgbval[2]); |
| 350 |
printf("%sdiffuseColor %.4f %.4f %.4f\n", tabs, |
| 351 |
rgbval[0], rgbval[1], rgbval[2]); |
| 352 |
if (c_cmaterial->rs > FTINY) { |
| 353 |
ccy2rgb(&c_cmaterial->rs_c, c_cmaterial->rs, rgbval); |
| 354 |
printf("%sspecularColor %.4f %.4f %.4f\n", tabs, |
| 355 |
rgbval[0], rgbval[1], rgbval[2]); |
| 356 |
printf("%sshininess %.3f\n", tabs, 1.-sqrt(c_cmaterial->rs_a)); |
| 357 |
} |
| 358 |
if (c_cmaterial->ed > FTINY) { |
| 359 |
ccy2rgb(&c_cmaterial->ed_c, 1.0, rgbval); |
| 360 |
printf("%semissiveColor %.4f %.4f %.4f\n", tabs, |
| 361 |
rgbval[0], rgbval[1], rgbval[2]); |
| 362 |
} |
| 363 |
if (c_cmaterial->ts > FTINY) |
| 364 |
printf("%stransparency %.4f\n", tabs, |
| 365 |
c_cmaterial->ts + c_cmaterial->td); |
| 366 |
indent(0); |
| 367 |
printf("%s}\n", tabs); |
| 368 |
if (outtype != O_INV1) |
| 369 |
printf("%sShapeHints { shapeType %s faceType UNKNOWN_FACE_TYPE }\n", |
| 370 |
tabs, |
| 371 |
c_cmaterial->sided ? "SOLID" : "UNKNOWN_SHAPE_TYPE"); |
| 372 |
indent(0); |
| 373 |
printf("%s}\n", tabs); |
| 374 |
c_cmaterial->clock = 0; |
| 375 |
return(0); |
| 376 |
} |
| 377 |
|
| 378 |
|
| 379 |
int |
| 380 |
i_face( /* translate an N-sided face */ |
| 381 |
int ac, |
| 382 |
char **av |
| 383 |
) |
| 384 |
{ |
| 385 |
static char lastmat[MAXID]; |
| 386 |
struct face *newf; |
| 387 |
register C_VERTEX *vp; |
| 388 |
register LUENT *lp; |
| 389 |
register int i; |
| 390 |
|
| 391 |
if (ac < 4) |
| 392 |
return(MG_EARGC); |
| 393 |
if ( strcmp(lastmat, curmatname) || c_cmaterial->clock || |
| 394 |
nverts == 0 || nverts+ac-1 >= MAXVERT) { |
| 395 |
flush_cache(); /* new cache */ |
| 396 |
lu_init(&vert_tab, MAXVERT); |
| 397 |
printf("%sSeparator {\n", tabs); |
| 398 |
indent(1); |
| 399 |
if (put_material() < 0) /* put out material */ |
| 400 |
return(MG_EBADMAT); |
| 401 |
(void)strcpy(lastmat, curmatname); |
| 402 |
} |
| 403 |
/* allocate new face */ |
| 404 |
if ((newf = newface(ac-1)) == NULL) |
| 405 |
return(MG_EMEM); |
| 406 |
newf->nv = ac-1; |
| 407 |
/* get vertex references */ |
| 408 |
for (i = 0; i < newf->nv; i++) { |
| 409 |
if ((vp = c_getvert(av[i+1])) == NULL) |
| 410 |
return(MG_EUNDEF); |
| 411 |
setvkey(vlist[nverts], vp); |
| 412 |
lp = lu_find(&vert_tab, vlist[nverts]); |
| 413 |
if (lp == NULL) |
| 414 |
return(MG_EMEM); |
| 415 |
if (lp->key == NULL) |
| 416 |
lp->key = (char *)vlist[nverts++]; |
| 417 |
newf->vl[i] = ((char (*)[VFLEN])lp->key - vlist); |
| 418 |
} |
| 419 |
/* add to face list */ |
| 420 |
newf->next = NULL; |
| 421 |
if (flist == NULL) |
| 422 |
flist = newf; |
| 423 |
else |
| 424 |
flast->next = newf; |
| 425 |
flast = newf; |
| 426 |
return(MG_OK); /* we'll actually put it out later */ |
| 427 |
} |
| 428 |
|
| 429 |
|
| 430 |
int |
| 431 |
i_sph( /* translate sphere description */ |
| 432 |
int ac, |
| 433 |
char **av |
| 434 |
) |
| 435 |
{ |
| 436 |
register C_VERTEX *cent; |
| 437 |
|
| 438 |
if (ac != 3) |
| 439 |
return(MG_EARGC); |
| 440 |
flush_cache(); /* flush vertex cache */ |
| 441 |
printf("%sSeparator {\n", tabs); |
| 442 |
indent(1); |
| 443 |
/* put out current material */ |
| 444 |
if (put_material() < 0) |
| 445 |
return(MG_EBADMAT); |
| 446 |
/* get center */ |
| 447 |
if ((cent = c_getvert(av[1])) == NULL) |
| 448 |
return(MG_EUNDEF); |
| 449 |
/* get radius */ |
| 450 |
if (!isflt(av[2])) |
| 451 |
return(MG_ETYPE); |
| 452 |
printf("%sTranslation { translation %13.9g %13.9g %13.9g }\n", tabs, |
| 453 |
cent->p[0], cent->p[1], cent->p[2]); |
| 454 |
printf("%sSphere { radius %s }\n", tabs, av[2]); |
| 455 |
indent(0); |
| 456 |
printf("%s}\n", tabs); |
| 457 |
return(MG_OK); |
| 458 |
} |
| 459 |
|
| 460 |
|
| 461 |
int |
| 462 |
i_cyl( /* translate a cylinder description */ |
| 463 |
int ac, |
| 464 |
char **av |
| 465 |
) |
| 466 |
{ |
| 467 |
register C_VERTEX *v1, *v2; |
| 468 |
FVECT va; |
| 469 |
double length, angle; |
| 470 |
|
| 471 |
if (ac != 4) |
| 472 |
return(MG_EARGC); |
| 473 |
flush_cache(); /* flush vertex cache */ |
| 474 |
printf("%sSeparator {\n", tabs); |
| 475 |
indent(1); |
| 476 |
/* put out current material */ |
| 477 |
if (put_material() < 0) |
| 478 |
return(MG_EBADMAT); |
| 479 |
/* get endpoints */ |
| 480 |
if (((v1 = c_getvert(av[1])) == NULL) | ((v2 = c_getvert(av[3])) == NULL)) |
| 481 |
return(MG_EUNDEF); |
| 482 |
/* get radius */ |
| 483 |
if (!isflt(av[2])) |
| 484 |
return(MG_ETYPE); |
| 485 |
/* compute transform */ |
| 486 |
va[0] = v2->p[0] - v1->p[0]; |
| 487 |
va[1] = v2->p[1] - v1->p[1]; |
| 488 |
va[2] = v2->p[2] - v1->p[2]; |
| 489 |
length = VLEN(va); |
| 490 |
angle = Acos(va[1]/length); |
| 491 |
printf("%sTranslation { translation %13.9g %13.9g %13.9g }\n", tabs, |
| 492 |
.5*(v1->p[0]+v2->p[0]), .5*(v1->p[1]+v2->p[1]), |
| 493 |
.5*(v1->p[2]+v2->p[2])); |
| 494 |
printf("%sRotation { rotation %.9g %.9g %.9g %.9g }\n", tabs, |
| 495 |
va[2], 0., -va[0], angle); |
| 496 |
/* open-ended */ |
| 497 |
printf("%sCylinder { parts SIDES height %13.9g radius %s }\n", tabs, |
| 498 |
length, av[2]); |
| 499 |
indent(0); |
| 500 |
printf("%s}\n", tabs); |
| 501 |
return(MG_OK); |
| 502 |
} |
| 503 |
|
| 504 |
|
| 505 |
char * |
| 506 |
to_id( /* make sure a name is a valid Inventor ID */ |
| 507 |
register char *name |
| 508 |
) |
| 509 |
{ |
| 510 |
static char id[MAXID]; |
| 511 |
register char *cp; |
| 512 |
|
| 513 |
for (cp = id; *name && cp < MAXID-1+id; name++) |
| 514 |
if (isalnum(*name) || *name == '_') |
| 515 |
*cp++ = *name; |
| 516 |
else |
| 517 |
*cp++ = '_'; |
| 518 |
*cp = '\0'; |
| 519 |
return(id); |
| 520 |
} |
| 521 |
|
| 522 |
|
| 523 |
void |
| 524 |
flush_cache(void) /* put out cached faces */ |
| 525 |
{ |
| 526 |
int VFSEPPOS = strchr(vlist[0],'\n') - vlist[0]; |
| 527 |
int donorms = 0; |
| 528 |
register struct face *f; |
| 529 |
register int i; |
| 530 |
|
| 531 |
if (nverts == 0) |
| 532 |
return; |
| 533 |
/* put out coordinates */ |
| 534 |
printf("%sCoordinate3 {\n", tabs); |
| 535 |
indent(1); |
| 536 |
vlist[0][VFSEPPOS] = '\0'; |
| 537 |
printf("%spoint [ %s", tabs, vlist[0]); |
| 538 |
for (i = 1; i < nverts; i++) { |
| 539 |
vlist[i][VFSEPPOS] = '\0'; |
| 540 |
printf(",\n%s %s", tabs, vlist[i]); |
| 541 |
if (strcmp(VFSEPPOS+1+vlist[i], VZVECT)) |
| 542 |
donorms++; |
| 543 |
} |
| 544 |
indent(0); |
| 545 |
printf(" ]\n%s}\n", tabs); |
| 546 |
if (donorms) { /* put out normals */ |
| 547 |
printf("%sNormal {\n", tabs); |
| 548 |
indent(1); |
| 549 |
printf("%svector [ %s", tabs, VFSEPPOS+1+vlist[0]); |
| 550 |
for (i = 1; i < nverts; i++) |
| 551 |
printf(",\n%s %s", tabs, VFSEPPOS+1+vlist[i]); |
| 552 |
indent(0); |
| 553 |
printf(" ]\n%s}\n", tabs); |
| 554 |
} |
| 555 |
/* put out faces */ |
| 556 |
printf("%sIndexedFaceSet {\n", tabs); |
| 557 |
indent(1); |
| 558 |
f = flist; /* coordinate indices */ |
| 559 |
printf("%scoordIndex [ %d", tabs, f->vl[0]); |
| 560 |
for (i = 1; i < f->nv; i++) |
| 561 |
printf(", %d", f->vl[i]); |
| 562 |
for (f = f->next; f != NULL; f = f->next) { |
| 563 |
printf(", -1,\n%s %d", tabs, f->vl[0]); |
| 564 |
for (i = 1; i < f->nv; i++) |
| 565 |
printf(", %d", f->vl[i]); |
| 566 |
} |
| 567 |
printf(" ]\n"); |
| 568 |
if (donorms) { |
| 569 |
f = flist; /* normal indices */ |
| 570 |
printf("%snormalIndex [ %d", tabs, f->vl[0]); |
| 571 |
for (i = 1; i < f->nv; i++) |
| 572 |
printf(", %d", f->vl[i]); |
| 573 |
for (f = f->next; f != NULL; f = f->next) { |
| 574 |
printf(", -1,\n%s %d", tabs, f->vl[0]); |
| 575 |
for (i = 1; i < f->nv; i++) |
| 576 |
printf(", %d", f->vl[i]); |
| 577 |
} |
| 578 |
printf(" ]\n"); |
| 579 |
} |
| 580 |
indent(0); /* close IndexedFaceSet */ |
| 581 |
printf("%s}\n", tabs); |
| 582 |
indent(0); /* close face group */ |
| 583 |
printf("%s}\n", tabs); |
| 584 |
while ((f = flist) != NULL) { /* free face list */ |
| 585 |
flist = f->next; |
| 586 |
freeface(f); |
| 587 |
} |
| 588 |
lu_done(&vert_tab); /* clear lookup table */ |
| 589 |
nverts = 0; |
| 590 |
} |
