| 29 |
|
* It is not necessary for the normal vectors to have unit length. |
| 30 |
|
*/ |
| 31 |
|
|
| 32 |
< |
#include "standard.h" |
| 32 |
> |
#include <stdlib.h> |
| 33 |
> |
#include <stdio.h> |
| 34 |
|
|
| 35 |
+ |
#include "rtmath.h" |
| 36 |
+ |
|
| 37 |
|
#include "tmesh.h" |
| 38 |
|
|
| 39 |
|
#define VOIDID "void" /* this is defined in object.h */ |
| 55 |
|
VERTEX *vlist = NULL; /* our vertex list */ |
| 56 |
|
int nverts = 0; /* number of vertices in our list */ |
| 57 |
|
|
| 58 |
< |
#define novert(i) ((i)<0|(i)>=nverts || !(vlist[i].flags&V_DEFINED)) |
| 58 |
> |
#define novert(i) (((i)<0)|((i)>=nverts) || !(vlist[i].flags&V_DEFINED)) |
| 59 |
|
|
| 60 |
|
#define CHUNKSIZ 128 /* vertex allocation chunk size */ |
| 61 |
|
|
| 65 |
|
char *defpat = ""; /* default (starting) picture name */ |
| 66 |
|
char *defobj = "T"; /* default (starting) object name */ |
| 67 |
|
|
| 68 |
+ |
void convert(char *fname, FILE *fp); |
| 69 |
+ |
void triangle(char *pn,char *mod,char *obj, VERTEX *v1,VERTEX *v2,VERTEX *v3); |
| 70 |
+ |
VERTEX *vnew(int id, double x, double y, double z); |
| 71 |
+ |
void syntax(char *fn, FILE *fp, char *er); |
| 72 |
|
|
| 73 |
< |
main(argc, argv) /* read in T-mesh files and convert */ |
| 74 |
< |
int argc; |
| 75 |
< |
char *argv[]; |
| 73 |
> |
|
| 74 |
> |
int |
| 75 |
> |
main( /* read in T-mesh files and convert */ |
| 76 |
> |
int argc, |
| 77 |
> |
char *argv[] |
| 78 |
> |
) |
| 79 |
|
{ |
| 80 |
|
FILE *fp; |
| 81 |
|
int i; |
| 112 |
|
} |
| 113 |
|
|
| 114 |
|
|
| 115 |
< |
convert(fname, fp) /* convert a T-mesh */ |
| 116 |
< |
char *fname; |
| 117 |
< |
FILE *fp; |
| 115 |
> |
void |
| 116 |
> |
convert( /* convert a T-mesh */ |
| 117 |
> |
char *fname, |
| 118 |
> |
FILE *fp |
| 119 |
> |
) |
| 120 |
|
{ |
| 121 |
|
char typ[4]; |
| 122 |
|
int id[3]; |
| 207 |
|
} |
| 208 |
|
|
| 209 |
|
|
| 210 |
< |
triangle(pn, mod, obj, v1, v2, v3) /* put out a triangle */ |
| 211 |
< |
char *pn, *mod, *obj; |
| 212 |
< |
register VERTEX *v1, *v2, *v3; |
| 210 |
> |
void |
| 211 |
> |
triangle( /* put out a triangle */ |
| 212 |
> |
char *pn, |
| 213 |
> |
char *mod, |
| 214 |
> |
char *obj, |
| 215 |
> |
register VERTEX *v1, |
| 216 |
> |
register VERTEX *v2, |
| 217 |
> |
register VERTEX *v3 |
| 218 |
> |
) |
| 219 |
|
{ |
| 220 |
+ |
static char vfmt[] = "%18.12g %18.12g %18.12g\n"; |
| 221 |
|
static int ntri = 0; |
| 222 |
+ |
int flatness = ISFLAT; |
| 223 |
|
BARYCCM bvecs; |
| 224 |
< |
FLOAT bvm[3][3]; |
| 224 |
> |
RREAL bvm[3][3]; |
| 225 |
|
register int i; |
| 226 |
|
/* compute barycentric coordinates */ |
| 227 |
|
if (v1->flags & v2->flags & v3->flags & (V_HASINDX|V_HASNORM)) |
| 228 |
|
if (comp_baryc(&bvecs, v1->pos, v2->pos, v3->pos) < 0) |
| 229 |
|
return; |
| 230 |
+ |
/* check flatness */ |
| 231 |
+ |
if (v1->flags & v2->flags & v3->flags & V_HASNORM) { |
| 232 |
+ |
flatness = flat_tri(v1->pos, v2->pos, v3->pos, |
| 233 |
+ |
v1->nor, v2->nor, v3->nor); |
| 234 |
+ |
if (flatness == DEGEN) |
| 235 |
+ |
return; |
| 236 |
+ |
} |
| 237 |
|
/* put out texture (if any) */ |
| 238 |
< |
if (v1->flags & v2->flags & v3->flags & V_HASNORM && |
| 212 |
< |
!flat_tri(v1->pos, v2->pos, v3->pos, |
| 213 |
< |
v1->nor, v2->nor, v3->nor)) { |
| 238 |
> |
if (flatness == ISBENT || flatness == RVBENT) { |
| 239 |
|
printf("\n%s texfunc %s\n", mod, TEXNAME); |
| 240 |
|
mod = TEXNAME; |
| 241 |
|
printf("4 dx dy dz %s\n", TCALNAME); |
| 260 |
|
} |
| 261 |
|
put_baryc(&bvecs, bvm, 2); |
| 262 |
|
} |
| 263 |
< |
/* put out triangle */ |
| 263 |
> |
/* put out (reversed) triangle */ |
| 264 |
|
printf("\n%s polygon %s.%d\n", mod, obj, ++ntri); |
| 265 |
|
printf("0\n0\n9\n"); |
| 266 |
< |
printf("%18.12g %18.12g %18.12g\n", v1->pos[0],v1->pos[1],v1->pos[2]); |
| 267 |
< |
printf("%18.12g %18.12g %18.12g\n", v2->pos[0],v2->pos[1],v2->pos[2]); |
| 268 |
< |
printf("%18.12g %18.12g %18.12g\n", v3->pos[0],v3->pos[1],v3->pos[2]); |
| 266 |
> |
if (flatness == RVFLAT || flatness == RVBENT) { |
| 267 |
> |
printf(vfmt, v3->pos[0],v3->pos[1],v3->pos[2]); |
| 268 |
> |
printf(vfmt, v2->pos[0],v2->pos[1],v2->pos[2]); |
| 269 |
> |
printf(vfmt, v1->pos[0],v1->pos[1],v1->pos[2]); |
| 270 |
> |
} else { |
| 271 |
> |
printf(vfmt, v1->pos[0],v1->pos[1],v1->pos[2]); |
| 272 |
> |
printf(vfmt, v2->pos[0],v2->pos[1],v2->pos[2]); |
| 273 |
> |
printf(vfmt, v3->pos[0],v3->pos[1],v3->pos[2]); |
| 274 |
> |
} |
| 275 |
|
} |
| 276 |
|
|
| 277 |
|
|
| 278 |
|
VERTEX * |
| 279 |
< |
vnew(id, x, y, z) /* create a new vertex */ |
| 280 |
< |
register int id; |
| 281 |
< |
double x, y, z; |
| 279 |
> |
vnew( /* create a new vertex */ |
| 280 |
> |
register int id, |
| 281 |
> |
double x, |
| 282 |
> |
double y, |
| 283 |
> |
double z |
| 284 |
> |
) |
| 285 |
|
{ |
| 286 |
|
register int i; |
| 287 |
|
|
| 291 |
|
if (vlist == NULL) |
| 292 |
|
vlist = (VERTEX *)malloc(nverts*sizeof(VERTEX)); |
| 293 |
|
else |
| 294 |
< |
vlist = (VERTEX *)realloc((char *)vlist, |
| 294 |
> |
vlist = (VERTEX *)realloc((void *)vlist, |
| 295 |
|
nverts*sizeof(VERTEX)); |
| 296 |
|
if (vlist == NULL) { |
| 297 |
|
fprintf(stderr, |
| 311 |
|
} |
| 312 |
|
|
| 313 |
|
|
| 314 |
< |
syntax(fn, fp, er) /* report syntax error and exit */ |
| 315 |
< |
char *fn; |
| 316 |
< |
register FILE *fp; |
| 317 |
< |
char *er; |
| 314 |
> |
void |
| 315 |
> |
syntax( /* report syntax error and exit */ |
| 316 |
> |
char *fn, |
| 317 |
> |
register FILE *fp, |
| 318 |
> |
char *er |
| 319 |
> |
) |
| 320 |
|
{ |
| 321 |
|
extern long ftell(); |
| 322 |
|
register long cpos; |
