7 |
|
/* |
8 |
|
* Convert a Wavefront .obj file to Radiance format. |
9 |
|
* |
10 |
< |
* Currently, we support only polygonal geometry, and faces |
11 |
< |
* must be either quads or triangles for smoothing to work. |
12 |
< |
* Also, texture indices only work for triangles, though |
13 |
< |
* I'm not sure they work correctly. |
10 |
> |
* Currently, we support only polygonal geometry. Non-planar |
11 |
> |
* faces are broken rather haphazardly into triangles. |
12 |
> |
* Also, texture map indices only work for triangles, though |
13 |
> |
* I'm not sure they work correctly. (Taken out -- see TEXMAPS defines.) |
14 |
|
*/ |
15 |
|
|
16 |
|
#include "standard.h" |
17 |
|
|
18 |
+ |
#include "trans.h" |
19 |
+ |
|
20 |
|
#include <ctype.h> |
21 |
|
|
20 |
– |
#define VOIDID "void" /* this is defined in object.h */ |
21 |
– |
|
22 |
|
#define TCALNAME "tmesh.cal" /* triangle interp. file */ |
23 |
|
#define QCALNAME "surf.cal" /* quad interp. file */ |
24 |
|
#define PATNAME "M-pat" /* mesh pattern name (reused) */ |
25 |
|
#define TEXNAME "M-nor" /* mesh texture name (reused) */ |
26 |
+ |
#define DEFOBJ "unnamed" /* default object name */ |
27 |
+ |
#define DEFMAT "white" /* default material name */ |
28 |
|
|
29 |
|
#define ABS(x) ((x)>=0 ? (x) : -(x)) |
30 |
|
|
34 |
|
int nvs; /* number of vertices in our list */ |
35 |
|
FVECT *vnlist; /* vertex normal list */ |
36 |
|
int nvns; |
37 |
< |
FLOAT (*vtlist)[2]; /* texture vertex list */ |
37 |
> |
FLOAT (*vtlist)[2]; /* map vertex list */ |
38 |
|
int nvts; |
39 |
|
|
40 |
|
typedef FLOAT BARYCCM[3][4]; /* barycentric coordinate system */ |
41 |
|
|
42 |
< |
typedef int VNDX[3]; /* vertex index (point,texture,normal) */ |
42 |
> |
typedef int VNDX[3]; /* vertex index (point,map,normal) */ |
43 |
|
|
44 |
< |
#define CHUNKSIZ 128 /* vertex allocation chunk size */ |
44 |
> |
#define CHUNKSIZ 256 /* vertex allocation chunk size */ |
45 |
|
|
46 |
|
#define MAXARG 64 /* maximum # arguments in a statement */ |
47 |
|
|
48 |
< |
char *defmat = VOIDID; /* default (starting) material name */ |
49 |
< |
char *defpat = ""; /* default (starting) picture name */ |
50 |
< |
char *defobj = "F"; /* default (starting) object name */ |
48 |
> |
/* qualifiers */ |
49 |
> |
#define Q_MTL 0 |
50 |
> |
#define Q_MAP 1 |
51 |
> |
#define Q_GRP 2 |
52 |
> |
#define Q_OBJ 3 |
53 |
> |
#define Q_FAC 4 |
54 |
> |
#define NQUALS 5 |
55 |
|
|
56 |
< |
char picfile[128]; /* current picture file */ |
56 |
> |
char *qname[NQUALS] = { |
57 |
> |
"Material", |
58 |
> |
"Map", |
59 |
> |
"Group", |
60 |
> |
"Object", |
61 |
> |
"Face", |
62 |
> |
}; |
63 |
> |
|
64 |
> |
QLIST qlist = {NQUALS, qname}; |
65 |
> |
/* valid qualifier ids */ |
66 |
> |
IDLIST qual[NQUALS]; |
67 |
> |
/* mapping rules */ |
68 |
> |
RULEHD *ourmapping = NULL; |
69 |
> |
|
70 |
> |
char *defmat = DEFMAT; /* default (starting) material name */ |
71 |
> |
char *defobj = DEFOBJ; /* default (starting) object name */ |
72 |
> |
|
73 |
> |
int flatten = 0; /* discard surface normal information */ |
74 |
> |
|
75 |
> |
char *getmtl(), *getonm(); |
76 |
> |
|
77 |
> |
char mapname[128]; /* current picture file */ |
78 |
|
char matname[64]; /* current material name */ |
79 |
+ |
char group[16][32]; /* current group names */ |
80 |
|
char objname[128]; /* current object name */ |
81 |
+ |
char *inpfile; /* input file name */ |
82 |
|
int lineno; /* current line number */ |
83 |
+ |
int faceno; /* current face number */ |
84 |
|
|
55 |
– |
int nfaces; /* total number of faces output */ |
85 |
|
|
86 |
< |
|
58 |
< |
main(argc, argv) /* read in T-mesh files and convert */ |
86 |
> |
main(argc, argv) /* read in .obj file and convert */ |
87 |
|
int argc; |
88 |
|
char *argv[]; |
89 |
|
{ |
90 |
< |
FILE *fp; |
90 |
> |
int donames = 0; |
91 |
|
int i; |
92 |
|
|
93 |
|
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
95 |
|
case 'o': /* object name */ |
96 |
|
defobj = argv[++i]; |
97 |
|
break; |
98 |
< |
case 'm': /* default material */ |
99 |
< |
defmat = argv[++i]; |
98 |
> |
case 'n': /* just produce name list */ |
99 |
> |
donames++; |
100 |
|
break; |
101 |
< |
case 'p': /* default picture */ |
102 |
< |
defpat = argv[++i]; |
101 |
> |
case 'm': /* use custom mapfile */ |
102 |
> |
ourmapping = getmapping(argv[++i], &qlist); |
103 |
|
break; |
104 |
+ |
case 'f': /* flatten surfaces */ |
105 |
+ |
flatten++; |
106 |
+ |
break; |
107 |
|
default: |
108 |
< |
fprintf(stderr, |
78 |
< |
"Usage: %s [-o obj][-m mat][-p pic] [file ..]\n", |
79 |
< |
argv[0]); |
80 |
< |
exit(1); |
108 |
> |
goto userr; |
109 |
|
} |
110 |
< |
if (i >= argc) |
111 |
< |
convert("<stdin>", stdin); |
112 |
< |
else |
113 |
< |
for ( ; i < argc; i++) { |
114 |
< |
if ((fp = fopen(argv[i], "r")) == NULL) { |
115 |
< |
perror(argv[i]); |
116 |
< |
exit(1); |
110 |
> |
if (i > argc | i < argc-1) |
111 |
> |
goto userr; |
112 |
> |
if (i == argc) |
113 |
> |
inpfile = "<stdin>"; |
114 |
> |
else if (freopen(inpfile=argv[i], "r", stdin) == NULL) { |
115 |
> |
fprintf(stderr, "%s: cannot open\n", inpfile); |
116 |
> |
exit(1); |
117 |
> |
} |
118 |
> |
if (donames) { /* scan for ids */ |
119 |
> |
getnames(stdin); |
120 |
> |
printf("filename \"%s\"\n", inpfile); |
121 |
> |
printf("filetype \"Wavefront\"\n"); |
122 |
> |
write_quals(&qlist, qual, stdout); |
123 |
> |
printf("qualifier %s begin\n", qlist.qual[Q_FAC]); |
124 |
> |
printf("[%d:%d]\n", 1, faceno); |
125 |
> |
printf("end\n"); |
126 |
> |
} else { /* translate file */ |
127 |
> |
printf("# "); |
128 |
> |
printargs(argc, argv, stdout); |
129 |
> |
convert(stdin); |
130 |
> |
} |
131 |
> |
exit(0); |
132 |
> |
userr: |
133 |
> |
fprintf(stderr, "Usage: %s [-o obj][-m mapping][-n][-f] [file.obj]\n", |
134 |
> |
argv[0]); |
135 |
> |
exit(1); |
136 |
> |
} |
137 |
> |
|
138 |
> |
|
139 |
> |
getnames(fp) /* get valid qualifier names */ |
140 |
> |
FILE *fp; |
141 |
> |
{ |
142 |
> |
char *argv[MAXARG]; |
143 |
> |
int argc; |
144 |
> |
ID tmpid; |
145 |
> |
register int i; |
146 |
> |
|
147 |
> |
while (argc = getstmt(argv, fp)) |
148 |
> |
switch (argv[0][0]) { |
149 |
> |
case 'f': /* face */ |
150 |
> |
if (!argv[0][1]) |
151 |
> |
faceno++; |
152 |
> |
break; |
153 |
> |
case 'u': |
154 |
> |
if (!strcmp(argv[0], "usemtl")) { /* material */ |
155 |
> |
if (argc < 2) |
156 |
> |
break; /* not fatal */ |
157 |
> |
tmpid.number = 0; |
158 |
> |
tmpid.name = argv[1]; |
159 |
> |
findid(&qual[Q_MTL], &tmpid, 1); |
160 |
> |
} else if (!strcmp(argv[0], "usemap")) {/* map */ |
161 |
> |
if (argc < 2 || !strcmp(argv[1], "off")) |
162 |
> |
break; /* not fatal */ |
163 |
> |
tmpid.number = 0; |
164 |
> |
tmpid.name = argv[1]; |
165 |
> |
findid(&qual[Q_MAP], &tmpid, 1); |
166 |
|
} |
167 |
< |
convert(argv[i], fp); |
168 |
< |
fclose(fp); |
167 |
> |
break; |
168 |
> |
case 'o': /* object name */ |
169 |
> |
if (argv[0][1] || argc < 2) |
170 |
> |
break; |
171 |
> |
tmpid.number = 0; |
172 |
> |
tmpid.name = argv[1]; |
173 |
> |
findid(&qual[Q_OBJ], &tmpid, 1); |
174 |
> |
break; |
175 |
> |
case 'g': /* group name(s) */ |
176 |
> |
if (argv[0][1]) |
177 |
> |
break; |
178 |
> |
tmpid.number = 0; |
179 |
> |
for (i = 1; i < argc; i++) { |
180 |
> |
tmpid.name = argv[i]; |
181 |
> |
findid(&qual[Q_GRP], &tmpid, 1); |
182 |
> |
} |
183 |
> |
break; |
184 |
|
} |
93 |
– |
exit(0); |
185 |
|
} |
186 |
|
|
187 |
|
|
188 |
< |
convert(fname, fp) /* convert a T-mesh */ |
98 |
< |
char *fname; |
188 |
> |
convert(fp) /* convert a T-mesh */ |
189 |
|
FILE *fp; |
190 |
|
{ |
191 |
|
char *argv[MAXARG]; |
192 |
|
int argc; |
193 |
|
int nstats, nunknown; |
194 |
|
register int i; |
105 |
– |
/* start fresh */ |
106 |
– |
freeverts(); |
107 |
– |
strcpy(picfile, defpat); |
108 |
– |
strcpy(matname, defmat); |
109 |
– |
strcpy(objname, defobj); |
110 |
– |
lineno = 0; |
111 |
– |
nstats = nunknown = 0; |
195 |
|
|
196 |
< |
printf("\n# Wavefront file read from: %s\n", fname); |
196 |
> |
nstats = nunknown = 0; |
197 |
|
/* scan until EOF */ |
198 |
|
while (argc = getstmt(argv, fp)) { |
199 |
|
switch (argv[0][0]) { |
201 |
|
switch (argv[0][1]) { |
202 |
|
case '\0': /* point */ |
203 |
|
if (badarg(argc-1,argv+1,"fff")) |
204 |
< |
syntax(fname, lineno, "Bad vertex"); |
204 |
> |
syntax("Bad vertex"); |
205 |
|
newv(atof(argv[1]), atof(argv[2]), |
206 |
|
atof(argv[3])); |
207 |
|
break; |
209 |
|
if (argv[0][2]) |
210 |
|
goto unknown; |
211 |
|
if (badarg(argc-1,argv+1,"fff")) |
212 |
< |
syntax(fname, lineno, "Bad normal"); |
212 |
> |
syntax("Bad normal"); |
213 |
|
if (!newvn(atof(argv[1]), atof(argv[2]), |
214 |
|
atof(argv[3]))) |
215 |
< |
syntax(fname, lineno, "Zero normal"); |
215 |
> |
syntax("Zero normal"); |
216 |
|
break; |
217 |
< |
case 't': /* texture */ |
217 |
> |
case 't': /* texture map */ |
218 |
|
if (argv[0][2]) |
219 |
|
goto unknown; |
220 |
|
if (badarg(argc-1,argv+1,"ff")) |
228 |
|
case 'f': /* face */ |
229 |
|
if (argv[0][1]) |
230 |
|
goto unknown; |
231 |
+ |
faceno++; |
232 |
|
switch (argc-1) { |
233 |
|
case 0: case 1: case 2: |
234 |
< |
syntax(fname, lineno, "Too few vertices"); |
234 |
> |
syntax("Too few vertices"); |
235 |
|
break; |
236 |
|
case 3: |
237 |
|
if (!puttri(argv[1], argv[2], argv[3])) |
238 |
< |
syntax(fname, lineno, "Bad triangle"); |
238 |
> |
syntax("Bad triangle"); |
239 |
|
break; |
240 |
|
case 4: |
241 |
|
if (!putquad(argv[1], argv[2], |
242 |
|
argv[3], argv[4])) |
243 |
< |
syntax(fname, lineno, "Bad quad"); |
243 |
> |
syntax("Bad quad"); |
244 |
|
break; |
245 |
|
default: |
246 |
|
if (!putface(argc-1, argv+1)) |
247 |
< |
syntax(fname, lineno, "Bad face"); |
247 |
> |
syntax("Bad face"); |
248 |
|
break; |
249 |
|
} |
250 |
|
break; |
257 |
|
if (argc < 2) |
258 |
|
break; /* not fatal */ |
259 |
|
if (!strcmp(argv[1], "off")) |
260 |
< |
picfile[0] = '\0'; |
260 |
> |
mapname[0] = '\0'; |
261 |
|
else |
262 |
< |
strcpy(picfile, argv[1]); |
262 |
> |
sprintf(mapname, "%s.pic", argv[1]); |
263 |
|
} else |
264 |
|
goto unknown; |
265 |
|
break; |
273 |
|
case 'g': /* group name(s) */ |
274 |
|
if (argv[0][1]) |
275 |
|
goto unknown; |
192 |
– |
if (argc < 2) |
193 |
– |
break; /* not fatal */ |
194 |
– |
objname[0] = '\0'; |
276 |
|
for (i = 1; i < argc; i++) |
277 |
< |
if (objname[0]) |
278 |
< |
sprintf(objname+strlen(objname), |
198 |
< |
".%s", argv[i]); |
199 |
< |
else |
200 |
< |
strcpy(objname, argv[i]); |
277 |
> |
strcpy(group[i-1], argv[i]); |
278 |
> |
group[i-1][0] = '\0'; |
279 |
|
break; |
280 |
|
case '#': /* comment */ |
281 |
+ |
printargs(argc, argv, stdout); |
282 |
|
break; |
283 |
|
default:; /* something we don't deal with */ |
284 |
|
unknown: |
287 |
|
} |
288 |
|
nstats++; |
289 |
|
} |
290 |
< |
printf("\n# Done processing file: %s\n", fname); |
290 |
> |
printf("\n# Done processing file: %s\n", inpfile); |
291 |
|
printf("# %d lines, %d statements, %d unrecognized\n", |
292 |
|
lineno, nstats, nunknown); |
293 |
|
} |
325 |
|
|
326 |
|
return(i); |
327 |
|
} |
249 |
– |
|
328 |
|
|
329 |
+ |
|
330 |
+ |
char * |
331 |
+ |
getmtl() /* figure material for this face */ |
332 |
+ |
{ |
333 |
+ |
register RULEHD *rp = ourmapping; |
334 |
+ |
|
335 |
+ |
if (rp == NULL) { /* no rule set */ |
336 |
+ |
if (matname[0]) |
337 |
+ |
return(matname); |
338 |
+ |
if (group[0][0]) |
339 |
+ |
return(group[0]); |
340 |
+ |
return(defmat); |
341 |
+ |
} |
342 |
+ |
/* check for match */ |
343 |
+ |
do { |
344 |
+ |
if (matchrule(rp)) { |
345 |
+ |
if (!strcmp(rp->mnam, VOIDID)) |
346 |
+ |
return(NULL); /* match is null */ |
347 |
+ |
return(rp->mnam); |
348 |
+ |
} |
349 |
+ |
rp = rp->next; |
350 |
+ |
} while (rp != NULL); |
351 |
+ |
/* no match found */ |
352 |
+ |
return(NULL); |
353 |
+ |
} |
354 |
+ |
|
355 |
+ |
|
356 |
+ |
char * |
357 |
+ |
getonm() /* invent a good name for object */ |
358 |
+ |
{ |
359 |
+ |
static char name[64]; |
360 |
+ |
register char *cp1, *cp2; |
361 |
+ |
register int i; |
362 |
+ |
/* check for preset */ |
363 |
+ |
if (objname[0]) |
364 |
+ |
return(objname); |
365 |
+ |
if (!group[0][0]) |
366 |
+ |
return(defobj); |
367 |
+ |
cp1 = name; /* else make name out of groups */ |
368 |
+ |
for (i = 0; group[i][0]; i++) { |
369 |
+ |
cp2 = group[i]; |
370 |
+ |
if (cp1 > name) |
371 |
+ |
*cp1++ = '.'; |
372 |
+ |
while (*cp1 = *cp2++) |
373 |
+ |
if (++cp1 >= name+sizeof(name)-2) { |
374 |
+ |
*cp1 = '\0'; |
375 |
+ |
return(name); |
376 |
+ |
} |
377 |
+ |
} |
378 |
+ |
return(name); |
379 |
+ |
} |
380 |
+ |
|
381 |
+ |
|
382 |
+ |
matchrule(rp) /* check for a match on this rule */ |
383 |
+ |
register RULEHD *rp; |
384 |
+ |
{ |
385 |
+ |
ID tmpid; |
386 |
+ |
int gotmatch; |
387 |
+ |
register int i; |
388 |
+ |
|
389 |
+ |
if (rp->qflg & FL(Q_MTL)) { |
390 |
+ |
if (!matname[0]) |
391 |
+ |
return(0); |
392 |
+ |
tmpid.number = 0; |
393 |
+ |
tmpid.name = matname; |
394 |
+ |
if (!matchid(&tmpid, &idm(rp)[Q_MTL])) |
395 |
+ |
return(0); |
396 |
+ |
} |
397 |
+ |
if (rp->qflg & FL(Q_MAP)) { |
398 |
+ |
if (!mapname[0]) |
399 |
+ |
return(0); |
400 |
+ |
tmpid.number = 0; |
401 |
+ |
tmpid.name = mapname; |
402 |
+ |
if (!matchid(&tmpid, &idm(rp)[Q_MAP])) |
403 |
+ |
return(0); |
404 |
+ |
} |
405 |
+ |
if (rp->qflg & FL(Q_GRP)) { |
406 |
+ |
tmpid.number = 0; |
407 |
+ |
gotmatch = 0; |
408 |
+ |
for (i = 0; group[i][0]; i++) { |
409 |
+ |
tmpid.name = group[i]; |
410 |
+ |
gotmatch |= matchid(&tmpid, &idm(rp)[Q_GRP]); |
411 |
+ |
} |
412 |
+ |
if (!gotmatch) |
413 |
+ |
return(0); |
414 |
+ |
} |
415 |
+ |
if (rp->qflg & FL(Q_OBJ)) { |
416 |
+ |
if (!objname[0]) |
417 |
+ |
return(0); |
418 |
+ |
tmpid.number = 0; |
419 |
+ |
tmpid.name = objname; |
420 |
+ |
if (!matchid(&tmpid, &idm(rp)[Q_OBJ])) |
421 |
+ |
return(0); |
422 |
+ |
} |
423 |
+ |
if (rp->qflg & FL(Q_FAC)) { |
424 |
+ |
tmpid.name = NULL; |
425 |
+ |
tmpid.number = faceno; |
426 |
+ |
if (!matchid(&tmpid, &idm(rp)[Q_FAC])) |
427 |
+ |
return(0); |
428 |
+ |
} |
429 |
+ |
return(1); |
430 |
+ |
} |
431 |
+ |
|
432 |
+ |
|
433 |
|
cvtndx(vi, vs) /* convert vertex string to index */ |
434 |
|
register VNDX vi; |
435 |
|
register char *vs; |
440 |
|
if (vi[0]-- > nvs) |
441 |
|
return(0); |
442 |
|
} else if (vi[0] < 0) { |
443 |
< |
vi[0] = nvs + vi[0]; |
443 |
> |
vi[0] += nvs; |
444 |
|
if (vi[0] < 0) |
445 |
|
return(0); |
446 |
|
} else |
447 |
|
return(0); |
448 |
< |
/* get texture */ |
448 |
> |
/* get map */ |
449 |
|
while (*vs) |
450 |
|
if (*vs++ == '/') |
451 |
|
break; |
454 |
|
if (vi[1]-- > nvts) |
455 |
|
return(0); |
456 |
|
} else if (vi[1] < 0) { |
457 |
< |
vi[1] = nvts + vi[1]; |
457 |
> |
vi[1] += nvts; |
458 |
|
if (vi[1] < 0) |
459 |
|
return(0); |
460 |
|
} else |
468 |
|
if (vi[2]-- > nvns) |
469 |
|
return(0); |
470 |
|
} else if (vi[2] < 0) { |
471 |
< |
vi[2] = nvns + vi[2]; |
471 |
> |
vi[2] += nvns; |
472 |
|
if (vi[2] < 0) |
473 |
|
return(0); |
474 |
|
} else |
477 |
|
} |
478 |
|
|
479 |
|
|
480 |
< |
putface(ac, av) /* put out an N-sided polygon */ |
480 |
> |
nonplanar(ac, av) /* are vertices non-planar? */ |
481 |
|
register int ac; |
482 |
|
register char **av; |
483 |
|
{ |
484 |
|
VNDX vi; |
485 |
+ |
FLOAT *p0, *p1; |
486 |
+ |
FVECT v1, v2, nsum, newn; |
487 |
+ |
double d; |
488 |
+ |
register int i; |
489 |
|
|
490 |
< |
printf("\n%s polygon %s.%d\n", matname, objname, ++nfaces); |
490 |
> |
if (!cvtndx(vi, av[0])) |
491 |
> |
return(0); |
492 |
> |
if (vi[2] >= 0) |
493 |
> |
return(1); /* has interpolated normals */ |
494 |
> |
if (ac < 4) |
495 |
> |
return(0); /* it's a triangle! */ |
496 |
> |
/* set up */ |
497 |
> |
p0 = vlist[vi[0]]; |
498 |
> |
if (!cvtndx(vi, av[1])) |
499 |
> |
return(0); /* error gets caught later */ |
500 |
> |
nsum[0] = nsum[1] = nsum[2] = 0.; |
501 |
> |
p1 = vlist[vi[0]]; |
502 |
> |
fvsum(v2, p1, p0, -1.0); |
503 |
> |
for (i = 2; i < ac; i++) { |
504 |
> |
VCOPY(v1, v2); |
505 |
> |
if (!cvtndx(vi, av[i])) |
506 |
> |
return(0); |
507 |
> |
p1 = vlist[vi[0]]; |
508 |
> |
fvsum(v2, p1, p0, -1.0); |
509 |
> |
fcross(newn, v1, v2); |
510 |
> |
if (normalize(newn) == 0.0) { |
511 |
> |
if (i < 3) |
512 |
> |
return(1); /* can't deal with this */ |
513 |
> |
fvsum(nsum, nsum, nsum, 1./(i-2)); |
514 |
> |
continue; |
515 |
> |
} |
516 |
> |
d = fdot(newn,nsum); |
517 |
> |
if (d >= 0) { |
518 |
> |
if (d < (1.0-FTINY)*(i-2)) |
519 |
> |
return(1); |
520 |
> |
fvsum(nsum, nsum, newn, 1.0); |
521 |
> |
} else { |
522 |
> |
if (d > -(1.0-FTINY)*(i-2)) |
523 |
> |
return(1); |
524 |
> |
fvsum(nsum, nsum, newn, -1.0); |
525 |
> |
} |
526 |
> |
} |
527 |
> |
return(0); |
528 |
> |
} |
529 |
> |
|
530 |
> |
|
531 |
> |
putface(ac, av) /* put out an N-sided polygon */ |
532 |
> |
int ac; |
533 |
> |
register char **av; |
534 |
> |
{ |
535 |
> |
VNDX vi; |
536 |
> |
char *cp; |
537 |
> |
register int i; |
538 |
> |
|
539 |
> |
if (nonplanar(ac, av)) { /* break into quads and triangles */ |
540 |
> |
while (ac > 3) { |
541 |
> |
if (!putquad(av[0], av[1], av[2], av[3])) |
542 |
> |
return(0); |
543 |
> |
ac -= 2; /* remove two vertices & rotate */ |
544 |
> |
cp = av[0]; |
545 |
> |
for (i = 0; i < ac-1; i++) |
546 |
> |
av[i] = av[i+3]; |
547 |
> |
av[i] = cp; |
548 |
> |
} |
549 |
> |
if (ac == 3 && !puttri(av[0], av[1], av[2])) |
550 |
> |
return(0); |
551 |
> |
return(1); |
552 |
> |
} |
553 |
> |
if ((cp = getmtl()) == NULL) |
554 |
> |
return(-1); |
555 |
> |
printf("\n%s polygon %s.%d\n", cp, getonm(), faceno); |
556 |
|
printf("0\n0\n%d\n", 3*ac); |
557 |
< |
while (ac--) { |
558 |
< |
if (!cvtndx(vi, *av++)) |
557 |
> |
for (i = 0; i < ac; i++) { |
558 |
> |
if (!cvtndx(vi, av[i])) |
559 |
|
return(0); |
560 |
|
pvect(vlist[vi[0]]); |
561 |
|
} |
566 |
|
puttri(v1, v2, v3) /* put out a triangle */ |
567 |
|
char *v1, *v2, *v3; |
568 |
|
{ |
569 |
< |
char *mod = matname; |
569 |
> |
char *mod; |
570 |
|
VNDX v1i, v2i, v3i; |
571 |
|
BARYCCM bvecs; |
572 |
|
int texOK, patOK; |
573 |
|
|
574 |
+ |
if ((mod = getmtl()) == NULL) |
575 |
+ |
return(-1); |
576 |
+ |
|
577 |
|
if (!cvtndx(v1i, v1) || !cvtndx(v2i, v2) || !cvtndx(v3i, v3)) |
578 |
|
return(0); |
579 |
|
/* compute barycentric coordinates */ |
580 |
< |
texOK = (v1i[2]>=0 && v2i[2]>=0 && v3i[2]>=0); |
581 |
< |
patOK = picfile[0] && (v1i[1]>=0 && v2i[1]>=0 && v3i[1]>=0); |
580 |
> |
texOK = !flatten && (v1i[2]>=0 && v2i[2]>=0 && v3i[2]>=0); |
581 |
> |
#ifdef TEXMAPS |
582 |
> |
patOK = mapname[0] && (v1i[1]>=0 && v2i[1]>=0 && v3i[1]>=0); |
583 |
> |
#else |
584 |
> |
patOK = 0; |
585 |
> |
#endif |
586 |
|
if (texOK | patOK) |
587 |
|
if (comp_baryc(bvecs, vlist[v1i[0]], vlist[v2i[0]], |
588 |
|
vlist[v3i[0]]) < 0) |
604 |
|
vnlist[v1i[2]][2], vnlist[v2i[2]][2], |
605 |
|
vnlist[v3i[2]][2]); |
606 |
|
} |
607 |
+ |
#ifdef TEXMAPS |
608 |
|
/* put out pattern (if any) */ |
609 |
|
if (patOK) { |
610 |
|
printf("\n%s colorpict %s\n", mod, PATNAME); |
611 |
|
mod = PATNAME; |
612 |
< |
printf("7 noneg noneg noneg %s %s u v\n", picfile, TCALNAME); |
612 |
> |
printf("7 noneg noneg noneg %s %s u v\n", mapname, TCALNAME); |
613 |
|
printf("0\n18\n"); |
614 |
|
put_baryc(bvecs); |
615 |
|
printf("\t%f %f %f\n", vtlist[v1i[1]][0], |
617 |
|
printf("\t%f %f %f\n", vtlist[v1i[1]][1], |
618 |
|
vtlist[v2i[1]][1], vtlist[v3i[1]][1]); |
619 |
|
} |
620 |
+ |
#endif |
621 |
|
/* put out triangle */ |
622 |
< |
printf("\n%s polygon %s.%d\n", mod, objname, ++nfaces); |
622 |
> |
printf("\n%s polygon %s.%d\n", mod, getonm(), faceno); |
623 |
|
printf("0\n0\n9\n"); |
624 |
|
pvect(vlist[v1i[0]]); |
625 |
|
pvect(vlist[v2i[0]]); |
679 |
|
} |
680 |
|
|
681 |
|
|
682 |
< |
putquad(p0, p1, p2, p3) /* put out a quadrilateral */ |
683 |
< |
char *p0, *p1, *p2, *p3; |
682 |
> |
putquad(p0, p1, p3, p2) /* put out a quadrilateral */ |
683 |
> |
char *p0, *p1, *p3, *p2; /* names correspond to binary pos. */ |
684 |
|
{ |
685 |
|
VNDX p0i, p1i, p2i, p3i; |
686 |
|
FVECT norm[4]; |
687 |
+ |
char *mod, *name; |
688 |
|
int axis; |
689 |
|
FVECT v1, v2, vc1, vc2; |
690 |
|
int ok1, ok2; |
691 |
+ |
|
692 |
+ |
#ifdef TEXMAPS |
693 |
+ |
/* also should output texture index coordinates, |
694 |
+ |
* which will require new .cal file |
695 |
+ |
*/ |
696 |
+ |
#endif |
697 |
+ |
if ((mod = getmtl()) == NULL) |
698 |
+ |
return(-1); |
699 |
+ |
name = getonm(); |
700 |
|
/* get actual indices */ |
701 |
|
if (!cvtndx(p0i,p0) || !cvtndx(p1i,p1) || |
702 |
|
!cvtndx(p2i,p2) || !cvtndx(p3i,p3)) |
716 |
|
axis = norminterp(norm, p0i, p1i, p2i, p3i); |
717 |
|
|
718 |
|
/* put out quadrilateral? */ |
719 |
< |
if (ok1 & ok2 && fdot(vc1,vc2) >= 1.0-FTINY*FTINY) { |
720 |
< |
printf("\n%s ", matname); |
719 |
> |
if (ok1 & ok2 && fabs(fdot(vc1,vc2)) >= 1.0-FTINY) { |
720 |
> |
printf("\n%s ", mod); |
721 |
|
if (axis != -1) { |
722 |
|
printf("texfunc %s\n", TEXNAME); |
723 |
|
printf("4 surf_dx surf_dy surf_dz %s\n", QCALNAME); |
730 |
|
pvect(v1); |
731 |
|
printf("\n%s ", TEXNAME); |
732 |
|
} |
733 |
< |
printf("polygon %s.%d\n", objname, ++nfaces); |
733 |
> |
printf("polygon %s.%d\n", name, faceno); |
734 |
|
printf("0\n0\n12\n"); |
735 |
|
pvect(vlist[p0i[0]]); |
736 |
|
pvect(vlist[p1i[0]]); |
740 |
|
} |
741 |
|
/* put out triangles? */ |
742 |
|
if (ok1) { |
743 |
< |
printf("\n%s ", matname); |
743 |
> |
printf("\n%s ", mod); |
744 |
|
if (axis != -1) { |
745 |
|
printf("texfunc %s\n", TEXNAME); |
746 |
|
printf("4 surf_dx surf_dy surf_dz %s\n", QCALNAME); |
752 |
|
pvect(v1); |
753 |
|
printf("\n%s ", TEXNAME); |
754 |
|
} |
755 |
< |
printf("polygon %s.%d\n", objname, ++nfaces); |
755 |
> |
printf("polygon %s.%da\n", name, faceno); |
756 |
|
printf("0\n0\n9\n"); |
757 |
|
pvect(vlist[p0i[0]]); |
758 |
|
pvect(vlist[p1i[0]]); |
759 |
|
pvect(vlist[p2i[0]]); |
760 |
|
} |
761 |
|
if (ok2) { |
762 |
< |
printf("\n%s ", matname); |
762 |
> |
printf("\n%s ", mod); |
763 |
|
if (axis != -1) { |
764 |
|
printf("texfunc %s\n", TEXNAME); |
765 |
|
printf("4 surf_dx surf_dy surf_dz %s\n", QCALNAME); |
771 |
|
pvect(v2); |
772 |
|
printf("\n%s ", TEXNAME); |
773 |
|
} |
774 |
< |
printf("polygon %s.%d\n", objname, ++nfaces); |
774 |
> |
printf("polygon %s.%db\n", name, faceno); |
775 |
|
printf("0\n0\n9\n"); |
776 |
|
pvect(vlist[p2i[0]]); |
777 |
|
pvect(vlist[p1i[0]]); |
794 |
|
FVECT v1; |
795 |
|
register int i, j; |
796 |
|
|
797 |
< |
if (!(p0i[2]>=0 && p1i[2]>=0 && p2i[2]>=0 && p3i[2]>=0)) |
797 |
> |
#ifdef TEXMAPS |
798 |
> |
/* also check for texture indices */ |
799 |
> |
#endif |
800 |
> |
if (flatten || !(p0i[2]>=0 && p1i[2]>=0 && p2i[2]>=0 && p3i[2]>=0)) |
801 |
|
return(-1); |
802 |
|
/* find dominant axis */ |
803 |
|
VCOPY(v1, vnlist[p0i[2]]); |
833 |
|
eqnmat[j][1]*vnlist[p1i[2]][i] + |
834 |
|
eqnmat[j][2]*vnlist[p2i[2]][i] + |
835 |
|
eqnmat[j][3]*vnlist[p3i[2]][i]; |
836 |
+ |
#ifdef TEXMAPS |
837 |
+ |
/* compute result matrix for texture indices */ |
838 |
+ |
#endif |
839 |
|
return(ax); |
840 |
|
|
841 |
|
#undef u |
911 |
|
|
912 |
|
|
913 |
|
int |
914 |
< |
newvt(x, y) /* create a new texture vertex */ |
914 |
> |
newvt(x, y) /* create a new texture map vertex */ |
915 |
|
double x, y; |
916 |
|
{ |
917 |
|
if (!(nvts%CHUNKSIZ)) { /* allocate next block */ |
927 |
|
exit(1); |
928 |
|
} |
929 |
|
} |
930 |
< |
/* assign new texture vertex */ |
930 |
> |
/* assign new vertex */ |
931 |
|
vtlist[nvts][0] = x; |
932 |
|
vtlist[nvts][1] = y; |
933 |
|
return(++nvts); |
934 |
|
} |
935 |
|
|
936 |
|
|
937 |
< |
syntax(fn, ln, er) /* report syntax error and exit */ |
662 |
< |
char *fn; |
663 |
< |
int ln; |
937 |
> |
syntax(er) /* report syntax error and exit */ |
938 |
|
char *er; |
939 |
|
{ |
940 |
|
fprintf(stderr, "%s: Wavefront syntax error near line %d: %s\n", |
941 |
< |
fn, ln, er); |
941 |
> |
inpfile, lineno, er); |
942 |
|
exit(1); |
943 |
|
} |