1 |
– |
/* Copyright (c) 1994 Regents of the University of California */ |
2 |
– |
|
1 |
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
6 |
– |
|
4 |
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/* |
5 |
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* Convert a Wavefront .obj file to Radiance format. |
6 |
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* |
7 |
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* Currently, we support only polygonal geometry. Non-planar |
8 |
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* faces are broken rather haphazardly into triangles. |
9 |
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* Also, texture map indices only work for triangles, though |
10 |
< |
* I'm not sure they work correctly. |
10 |
> |
* I'm not sure they work correctly. (Taken out -- see TEXMAPS defines.) |
11 |
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*/ |
12 |
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|
13 |
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#include "standard.h" |
14 |
|
|
15 |
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#include "trans.h" |
16 |
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|
17 |
+ |
#include "tmesh.h" |
18 |
+ |
|
19 |
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#include <ctype.h> |
20 |
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|
22 |
– |
#define TCALNAME "tmesh.cal" /* triangle interp. file */ |
23 |
– |
#define QCALNAME "surf.cal" /* quad interp. file */ |
21 |
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#define PATNAME "M-pat" /* mesh pattern name (reused) */ |
22 |
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#define TEXNAME "M-nor" /* mesh texture name (reused) */ |
23 |
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#define DEFOBJ "unnamed" /* default object name */ |
24 |
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#define DEFMAT "white" /* default material name */ |
25 |
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|
29 |
– |
#define ABS(x) ((x)>=0 ? (x) : -(x)) |
30 |
– |
|
26 |
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#define pvect(v) printf("%18.12g %18.12g %18.12g\n",(v)[0],(v)[1],(v)[2]) |
27 |
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|
28 |
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FVECT *vlist; /* our vertex list */ |
29 |
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int nvs; /* number of vertices in our list */ |
30 |
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FVECT *vnlist; /* vertex normal list */ |
31 |
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int nvns; |
32 |
< |
FLOAT (*vtlist)[2]; /* map vertex list */ |
32 |
> |
RREAL (*vtlist)[2]; /* map vertex list */ |
33 |
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int nvts; |
34 |
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|
40 |
– |
typedef FLOAT BARYCCM[3][4]; /* barycentric coordinate system */ |
41 |
– |
|
35 |
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typedef int VNDX[3]; /* vertex index (point,map,normal) */ |
36 |
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|
37 |
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#define CHUNKSIZ 256 /* vertex allocation chunk size */ |
62 |
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|
63 |
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char *defmat = DEFMAT; /* default (starting) material name */ |
64 |
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char *defobj = DEFOBJ; /* default (starting) object name */ |
72 |
– |
int donames = 0; /* only get qualifier names */ |
65 |
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|
66 |
+ |
int flatten = 0; /* discard surface normal information */ |
67 |
+ |
|
68 |
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char *getmtl(), *getonm(); |
69 |
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|
70 |
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char mapname[128]; /* current picture file */ |
71 |
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char matname[64]; /* current material name */ |
72 |
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char group[16][32]; /* current group names */ |
73 |
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char objname[128]; /* current object name */ |
74 |
+ |
char *inpfile; /* input file name */ |
75 |
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int lineno; /* current line number */ |
76 |
< |
int faceno; /* number of faces read */ |
76 |
> |
int faceno; /* current face number */ |
77 |
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|
78 |
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|
79 |
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main(argc, argv) /* read in .obj file and convert */ |
80 |
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int argc; |
81 |
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char *argv[]; |
82 |
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{ |
83 |
< |
char *fname; |
83 |
> |
int donames = 0; |
84 |
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int i; |
85 |
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|
86 |
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for (i = 1; i < argc && argv[i][0] == '-'; i++) |
94 |
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case 'm': /* use custom mapfile */ |
95 |
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ourmapping = getmapping(argv[++i], &qlist); |
96 |
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break; |
97 |
+ |
case 'f': /* flatten surfaces */ |
98 |
+ |
flatten++; |
99 |
+ |
break; |
100 |
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default: |
101 |
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goto userr; |
102 |
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} |
103 |
< |
if (i > argc | i < argc-1) |
103 |
> |
if ((i > argc) | (i < argc-1)) |
104 |
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goto userr; |
105 |
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if (i == argc) |
106 |
< |
fname = "<stdin>"; |
107 |
< |
else if (freopen(fname=argv[i], "r", stdin) == NULL) { |
108 |
< |
fprintf(stderr, "%s: cannot open\n", fname); |
106 |
> |
inpfile = "<stdin>"; |
107 |
> |
else if (freopen(inpfile=argv[i], "r", stdin) == NULL) { |
108 |
> |
fprintf(stderr, "%s: cannot open\n", inpfile); |
109 |
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exit(1); |
110 |
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} |
111 |
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if (donames) { /* scan for ids */ |
112 |
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getnames(stdin); |
113 |
< |
printf("filename \"%s\"\n", fname); |
113 |
> |
printf("filename \"%s\"\n", inpfile); |
114 |
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printf("filetype \"Wavefront\"\n"); |
115 |
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write_quals(&qlist, qual, stdout); |
116 |
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printf("qualifier %s begin\n", qlist.qual[Q_FAC]); |
119 |
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} else { /* translate file */ |
120 |
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printf("# "); |
121 |
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printargs(argc, argv, stdout); |
122 |
< |
convert(fname, stdin); |
122 |
> |
convert(stdin); |
123 |
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} |
124 |
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exit(0); |
125 |
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userr: |
126 |
< |
fprintf(stderr, "Usage: %s [-o obj][-m mapping][-n] [file.obj]\n", |
126 |
> |
fprintf(stderr, "Usage: %s [-o obj][-m mapping][-n][-f] [file.obj]\n", |
127 |
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argv[0]); |
128 |
|
exit(1); |
129 |
|
} |
137 |
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ID tmpid; |
138 |
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register int i; |
139 |
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|
140 |
< |
while (argc = getstmt(argv, fp)) |
140 |
> |
while ( (argc = getstmt(argv, fp)) ) |
141 |
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switch (argv[0][0]) { |
142 |
|
case 'f': /* face */ |
143 |
|
if (!argv[0][1]) |
178 |
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} |
179 |
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|
180 |
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|
181 |
< |
convert(fname, fp) /* convert a T-mesh */ |
184 |
< |
char *fname; |
181 |
> |
convert(fp) /* convert a T-mesh */ |
182 |
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FILE *fp; |
183 |
|
{ |
184 |
|
char *argv[MAXARG]; |
185 |
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int argc; |
186 |
|
int nstats, nunknown; |
187 |
|
register int i; |
188 |
< |
/* start fresh */ |
192 |
< |
freeverts(); |
193 |
< |
mapname[0] = '\0'; |
194 |
< |
strcpy(matname, defmat); |
195 |
< |
strcpy(objname, defobj); |
196 |
< |
lineno = 0; |
188 |
> |
|
189 |
|
nstats = nunknown = 0; |
190 |
|
/* scan until EOF */ |
191 |
< |
while (argc = getstmt(argv, fp)) { |
191 |
> |
while ( (argc = getstmt(argv, fp)) ) { |
192 |
|
switch (argv[0][0]) { |
193 |
|
case 'v': /* vertex */ |
194 |
|
switch (argv[0][1]) { |
195 |
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case '\0': /* point */ |
196 |
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if (badarg(argc-1,argv+1,"fff")) |
197 |
< |
syntax(fname, lineno, "Bad vertex"); |
197 |
> |
syntax("Bad vertex"); |
198 |
|
newv(atof(argv[1]), atof(argv[2]), |
199 |
|
atof(argv[3])); |
200 |
|
break; |
202 |
|
if (argv[0][2]) |
203 |
|
goto unknown; |
204 |
|
if (badarg(argc-1,argv+1,"fff")) |
205 |
< |
syntax(fname, lineno, "Bad normal"); |
205 |
> |
syntax("Bad normal"); |
206 |
|
if (!newvn(atof(argv[1]), atof(argv[2]), |
207 |
|
atof(argv[3]))) |
208 |
< |
syntax(fname, lineno, "Zero normal"); |
208 |
> |
syntax("Zero normal"); |
209 |
|
break; |
210 |
|
case 't': /* texture map */ |
211 |
|
if (argv[0][2]) |
224 |
|
faceno++; |
225 |
|
switch (argc-1) { |
226 |
|
case 0: case 1: case 2: |
227 |
< |
syntax(fname, lineno, "Too few vertices"); |
227 |
> |
syntax("Too few vertices"); |
228 |
|
break; |
229 |
|
case 3: |
230 |
|
if (!puttri(argv[1], argv[2], argv[3])) |
231 |
< |
syntax(fname, lineno, "Bad triangle"); |
231 |
> |
syntax("Bad triangle"); |
232 |
|
break; |
241 |
– |
case 4: |
242 |
– |
if (!putquad(argv[1], argv[2], |
243 |
– |
argv[3], argv[4])) |
244 |
– |
syntax(fname, lineno, "Bad quad"); |
245 |
– |
break; |
233 |
|
default: |
234 |
|
if (!putface(argc-1, argv+1)) |
235 |
< |
syntax(fname, lineno, "Bad face"); |
235 |
> |
syntax("Bad face"); |
236 |
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break; |
237 |
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} |
238 |
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break; |
247 |
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if (!strcmp(argv[1], "off")) |
248 |
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mapname[0] = '\0'; |
249 |
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else |
250 |
< |
strcpy(mapname, argv[1]); |
250 |
> |
sprintf(mapname, "%s.pic", argv[1]); |
251 |
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} else |
252 |
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goto unknown; |
253 |
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break; |
266 |
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group[i-1][0] = '\0'; |
267 |
|
break; |
268 |
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case '#': /* comment */ |
269 |
+ |
printargs(argc, argv, stdout); |
270 |
|
break; |
271 |
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default:; /* something we don't deal with */ |
272 |
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unknown: |
275 |
|
} |
276 |
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nstats++; |
277 |
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} |
278 |
< |
printf("\n# Done processing file: %s\n", fname); |
278 |
> |
printf("\n# Done processing file: %s\n", inpfile); |
279 |
|
printf("# %d lines, %d statements, %d unrecognized\n", |
280 |
|
lineno, nstats, nunknown); |
281 |
|
} |
320 |
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{ |
321 |
|
register RULEHD *rp = ourmapping; |
322 |
|
|
323 |
< |
if (rp == NULL) /* no rule set */ |
324 |
< |
return(matname); |
323 |
> |
if (rp == NULL) { /* no rule set */ |
324 |
> |
if (matname[0]) |
325 |
> |
return(matname); |
326 |
> |
if (group[0][0]) |
327 |
> |
return(group[0]); |
328 |
> |
return(defmat); |
329 |
> |
} |
330 |
|
/* check for match */ |
331 |
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do { |
332 |
|
if (matchrule(rp)) { |
347 |
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static char name[64]; |
348 |
|
register char *cp1, *cp2; |
349 |
|
register int i; |
350 |
< |
|
351 |
< |
if (!group[0][0] || strcmp(objname, DEFOBJ)) |
352 |
< |
return(objname); /* good enough for us */ |
353 |
< |
|
350 |
> |
/* check for preset */ |
351 |
> |
if (objname[0]) |
352 |
> |
return(objname); |
353 |
> |
if (!group[0][0]) |
354 |
> |
return(defobj); |
355 |
|
cp1 = name; /* else make name out of groups */ |
356 |
|
for (i = 0; group[i][0]; i++) { |
357 |
|
cp2 = group[i]; |
358 |
|
if (cp1 > name) |
359 |
|
*cp1++ = '.'; |
360 |
< |
while (*cp1 = *cp2++) |
360 |
> |
while ( (*cp1 = *cp2++) ) |
361 |
|
if (++cp1 >= name+sizeof(name)-2) { |
362 |
|
*cp1 = '\0'; |
363 |
|
return(name); |
375 |
|
register int i; |
376 |
|
|
377 |
|
if (rp->qflg & FL(Q_MTL)) { |
378 |
+ |
if (!matname[0]) |
379 |
+ |
return(0); |
380 |
|
tmpid.number = 0; |
381 |
|
tmpid.name = matname; |
382 |
|
if (!matchid(&tmpid, &idm(rp)[Q_MTL])) |
383 |
|
return(0); |
384 |
|
} |
385 |
|
if (rp->qflg & FL(Q_MAP)) { |
386 |
+ |
if (!mapname[0]) |
387 |
+ |
return(0); |
388 |
|
tmpid.number = 0; |
389 |
|
tmpid.name = mapname; |
390 |
|
if (!matchid(&tmpid, &idm(rp)[Q_MAP])) |
401 |
|
return(0); |
402 |
|
} |
403 |
|
if (rp->qflg & FL(Q_OBJ)) { |
404 |
+ |
if (!objname[0]) |
405 |
+ |
return(0); |
406 |
|
tmpid.number = 0; |
407 |
|
tmpid.name = objname; |
408 |
|
if (!matchid(&tmpid, &idm(rp)[Q_OBJ])) |
428 |
|
if (vi[0]-- > nvs) |
429 |
|
return(0); |
430 |
|
} else if (vi[0] < 0) { |
431 |
< |
vi[0] = nvs + vi[0]; |
431 |
> |
vi[0] += nvs; |
432 |
|
if (vi[0] < 0) |
433 |
|
return(0); |
434 |
|
} else |
442 |
|
if (vi[1]-- > nvts) |
443 |
|
return(0); |
444 |
|
} else if (vi[1] < 0) { |
445 |
< |
vi[1] = nvts + vi[1]; |
445 |
> |
vi[1] += nvts; |
446 |
|
if (vi[1] < 0) |
447 |
|
return(0); |
448 |
|
} else |
456 |
|
if (vi[2]-- > nvns) |
457 |
|
return(0); |
458 |
|
} else if (vi[2] < 0) { |
459 |
< |
vi[2] = nvns + vi[2]; |
459 |
> |
vi[2] += nvns; |
460 |
|
if (vi[2] < 0) |
461 |
|
return(0); |
462 |
|
} else |
465 |
|
} |
466 |
|
|
467 |
|
|
468 |
< |
nonplanar(ac, av) /* are vertices are non-planar? */ |
468 |
> |
nonplanar(ac, av) /* are vertices non-planar? */ |
469 |
|
register int ac; |
470 |
|
register char **av; |
471 |
|
{ |
472 |
|
VNDX vi; |
473 |
< |
FLOAT *p0, *p1; |
473 |
> |
RREAL *p0, *p1; |
474 |
|
FVECT v1, v2, nsum, newn; |
475 |
|
double d; |
476 |
|
register int i; |
477 |
|
|
478 |
|
if (!cvtndx(vi, av[0])) |
479 |
|
return(0); |
480 |
< |
if (vi[2] >= 0) |
480 |
> |
if (!flatten && vi[2] >= 0) |
481 |
|
return(1); /* has interpolated normals */ |
482 |
|
if (ac < 4) |
483 |
|
return(0); /* it's a triangle! */ |
521 |
|
register char **av; |
522 |
|
{ |
523 |
|
VNDX vi; |
524 |
< |
char *mod; |
524 |
> |
char *cp; |
525 |
|
register int i; |
526 |
|
|
527 |
< |
if (nonplanar(ac, av)) { /* break into quads and triangles */ |
528 |
< |
while (ac > 3) { |
529 |
< |
if (!putquad(av[0], av[1], av[2], av[3])) |
527 |
> |
if (nonplanar(ac, av)) { /* break into triangles */ |
528 |
> |
while (ac > 2) { |
529 |
> |
if (!puttri(av[0], av[1], av[2])) |
530 |
|
return(0); |
531 |
< |
ac -= 2; /* remove two vertices */ |
532 |
< |
for (i = 1; i < ac; i++) |
531 |
> |
ac--; /* remove vertex & rotate */ |
532 |
> |
cp = av[0]; |
533 |
> |
for (i = 0; i < ac-1; i++) |
534 |
|
av[i] = av[i+2]; |
535 |
+ |
av[i] = cp; |
536 |
|
} |
535 |
– |
if (ac == 3 && !puttri(av[0], av[1], av[2])) |
536 |
– |
return(0); |
537 |
|
return(1); |
538 |
|
} |
539 |
< |
if ((mod = getmtl()) == NULL) |
539 |
> |
if ((cp = getmtl()) == NULL) |
540 |
|
return(-1); |
541 |
< |
printf("\n%s polygon %s.%d\n", mod, getonm(), faceno); |
541 |
> |
printf("\n%s polygon %s.%d\n", cp, getonm(), faceno); |
542 |
|
printf("0\n0\n%d\n", 3*ac); |
543 |
|
for (i = 0; i < ac; i++) { |
544 |
|
if (!cvtndx(vi, av[i])) |
555 |
|
char *mod; |
556 |
|
VNDX v1i, v2i, v3i; |
557 |
|
BARYCCM bvecs; |
558 |
+ |
RREAL bcoor[3][3]; |
559 |
|
int texOK, patOK; |
560 |
+ |
int flatness; |
561 |
+ |
register int i; |
562 |
|
|
563 |
|
if ((mod = getmtl()) == NULL) |
564 |
|
return(-1); |
566 |
|
if (!cvtndx(v1i, v1) || !cvtndx(v2i, v2) || !cvtndx(v3i, v3)) |
567 |
|
return(0); |
568 |
|
/* compute barycentric coordinates */ |
569 |
< |
texOK = (v1i[2]>=0 && v2i[2]>=0 && v3i[2]>=0); |
569 |
> |
if (v1i[2]>=0 && v2i[2]>=0 && v3i[2]>=0) |
570 |
> |
flatness = flat_tri(vlist[v1i[0]], vlist[v2i[0]], vlist[v3i[0]], |
571 |
> |
vnlist[v1i[2]], vnlist[v2i[2]], vnlist[v3i[2]]); |
572 |
> |
else |
573 |
> |
flatness = ISFLAT; |
574 |
> |
|
575 |
> |
switch (flatness) { |
576 |
> |
case DEGEN: /* zero area */ |
577 |
> |
return(-1); |
578 |
> |
case RVFLAT: /* reversed normals, but flat */ |
579 |
> |
case ISFLAT: /* smoothing unnecessary */ |
580 |
> |
texOK = 0; |
581 |
> |
break; |
582 |
> |
case RVBENT: /* reversed normals with smoothing */ |
583 |
> |
case ISBENT: /* proper smoothing */ |
584 |
> |
texOK = 1; |
585 |
> |
break; |
586 |
> |
} |
587 |
> |
if (flatten) |
588 |
> |
texOK = 0; |
589 |
> |
#ifdef TEXMAPS |
590 |
|
patOK = mapname[0] && (v1i[1]>=0 && v2i[1]>=0 && v3i[1]>=0); |
591 |
+ |
#else |
592 |
+ |
patOK = 0; |
593 |
+ |
#endif |
594 |
|
if (texOK | patOK) |
595 |
< |
if (comp_baryc(bvecs, vlist[v1i[0]], vlist[v2i[0]], |
595 |
> |
if (comp_baryc(&bvecs, vlist[v1i[0]], vlist[v2i[0]], |
596 |
|
vlist[v3i[0]]) < 0) |
597 |
|
return(-1); |
598 |
|
/* put out texture (if any) */ |
600 |
|
printf("\n%s texfunc %s\n", mod, TEXNAME); |
601 |
|
mod = TEXNAME; |
602 |
|
printf("4 dx dy dz %s\n", TCALNAME); |
603 |
< |
printf("0\n21\n"); |
604 |
< |
put_baryc(bvecs); |
605 |
< |
printf("\t%14.12g %14.12g %14.12g\n", |
606 |
< |
vnlist[v1i[2]][0], vnlist[v2i[2]][0], |
607 |
< |
vnlist[v3i[2]][0]); |
608 |
< |
printf("\t%14.12g %14.12g %14.12g\n", |
609 |
< |
vnlist[v1i[2]][1], vnlist[v2i[2]][1], |
584 |
< |
vnlist[v3i[2]][1]); |
585 |
< |
printf("\t%14.12g %14.12g %14.12g\n", |
586 |
< |
vnlist[v1i[2]][2], vnlist[v2i[2]][2], |
587 |
< |
vnlist[v3i[2]][2]); |
603 |
> |
printf("0\n"); |
604 |
> |
for (i = 0; i < 3; i++) { |
605 |
> |
bcoor[i][0] = vnlist[v1i[2]][i]; |
606 |
> |
bcoor[i][1] = vnlist[v2i[2]][i]; |
607 |
> |
bcoor[i][2] = vnlist[v3i[2]][i]; |
608 |
> |
} |
609 |
> |
put_baryc(&bvecs, bcoor, 3); |
610 |
|
} |
611 |
+ |
#ifdef TEXMAPS |
612 |
|
/* put out pattern (if any) */ |
613 |
|
if (patOK) { |
614 |
|
printf("\n%s colorpict %s\n", mod, PATNAME); |
615 |
|
mod = PATNAME; |
616 |
|
printf("7 noneg noneg noneg %s %s u v\n", mapname, TCALNAME); |
617 |
< |
printf("0\n18\n"); |
618 |
< |
put_baryc(bvecs); |
619 |
< |
printf("\t%f %f %f\n", vtlist[v1i[1]][0], |
620 |
< |
vtlist[v2i[1]][0], vtlist[v3i[1]][0]); |
621 |
< |
printf("\t%f %f %f\n", vtlist[v1i[1]][1], |
622 |
< |
vtlist[v2i[1]][1], vtlist[v3i[1]][1]); |
617 |
> |
printf("0\n"); |
618 |
> |
for (i = 0; i < 2; i++) { |
619 |
> |
bcoor[i][0] = vtlist[v1i[1]][i]; |
620 |
> |
bcoor[i][1] = vtlist[v2i[1]][i]; |
621 |
> |
bcoor[i][2] = vtlist[v3i[1]][i]; |
622 |
> |
} |
623 |
> |
put_baryc(&bvecs, bcoor, 2); |
624 |
|
} |
625 |
< |
/* put out triangle */ |
625 |
> |
#endif |
626 |
> |
/* put out (reversed) triangle */ |
627 |
|
printf("\n%s polygon %s.%d\n", mod, getonm(), faceno); |
628 |
|
printf("0\n0\n9\n"); |
629 |
< |
pvect(vlist[v1i[0]]); |
630 |
< |
pvect(vlist[v2i[0]]); |
631 |
< |
pvect(vlist[v3i[0]]); |
632 |
< |
|
633 |
< |
return(1); |
634 |
< |
} |
635 |
< |
|
636 |
< |
|
612 |
< |
int |
613 |
< |
comp_baryc(bcm, v1, v2, v3) /* compute barycentric vectors */ |
614 |
< |
register BARYCCM bcm; |
615 |
< |
FLOAT *v1, *v2, *v3; |
616 |
< |
{ |
617 |
< |
FLOAT *vt; |
618 |
< |
FVECT va, vab, vcb; |
619 |
< |
double d; |
620 |
< |
register int i, j; |
621 |
< |
|
622 |
< |
for (j = 0; j < 3; j++) { |
623 |
< |
for (i = 0; i < 3; i++) { |
624 |
< |
vab[i] = v1[i] - v2[i]; |
625 |
< |
vcb[i] = v3[i] - v2[i]; |
626 |
< |
} |
627 |
< |
d = DOT(vcb,vcb); |
628 |
< |
if (d <= FTINY) |
629 |
< |
return(-1); |
630 |
< |
d = DOT(vcb,vab)/d; |
631 |
< |
for (i = 0; i < 3; i++) |
632 |
< |
va[i] = vab[i] - vcb[i]*d; |
633 |
< |
d = DOT(va,va); |
634 |
< |
if (d <= FTINY) |
635 |
< |
return(-1); |
636 |
< |
for (i = 0; i < 3; i++) { |
637 |
< |
va[i] /= d; |
638 |
< |
bcm[j][i] = va[i]; |
639 |
< |
} |
640 |
< |
bcm[j][3] = -DOT(v2,va); |
641 |
< |
/* rotate vertices */ |
642 |
< |
vt = v1; |
643 |
< |
v1 = v2; |
644 |
< |
v2 = v3; |
645 |
< |
v3 = vt; |
629 |
> |
if (flatness == RVFLAT || flatness == RVBENT) { |
630 |
> |
pvect(vlist[v3i[0]]); |
631 |
> |
pvect(vlist[v2i[0]]); |
632 |
> |
pvect(vlist[v1i[0]]); |
633 |
> |
} else { |
634 |
> |
pvect(vlist[v1i[0]]); |
635 |
> |
pvect(vlist[v2i[0]]); |
636 |
> |
pvect(vlist[v3i[0]]); |
637 |
|
} |
647 |
– |
return(0); |
648 |
– |
} |
649 |
– |
|
650 |
– |
|
651 |
– |
put_baryc(bcm) /* put barycentric coord. vectors */ |
652 |
– |
register BARYCCM bcm; |
653 |
– |
{ |
654 |
– |
register int i; |
655 |
– |
|
656 |
– |
for (i = 0; i < 3; i++) |
657 |
– |
printf("%14.8f %14.8f %14.8f %14.8f\n", |
658 |
– |
bcm[i][0], bcm[i][1], bcm[i][2], bcm[i][3]); |
659 |
– |
} |
660 |
– |
|
661 |
– |
|
662 |
– |
putquad(p0, p1, p3, p2) /* put out a quadrilateral */ |
663 |
– |
char *p0, *p1, *p3, *p2; /* names correspond to binary pos. */ |
664 |
– |
{ |
665 |
– |
VNDX p0i, p1i, p2i, p3i; |
666 |
– |
FVECT norm[4]; |
667 |
– |
char *mod, *name; |
668 |
– |
int axis; |
669 |
– |
FVECT v1, v2, vc1, vc2; |
670 |
– |
int ok1, ok2; |
671 |
– |
|
672 |
– |
if ((mod = getmtl()) == NULL) |
673 |
– |
return(-1); |
674 |
– |
name = getonm(); |
675 |
– |
/* get actual indices */ |
676 |
– |
if (!cvtndx(p0i,p0) || !cvtndx(p1i,p1) || |
677 |
– |
!cvtndx(p2i,p2) || !cvtndx(p3i,p3)) |
678 |
– |
return(0); |
679 |
– |
/* compute exact normals */ |
680 |
– |
fvsum(v1, vlist[p1i[0]], vlist[p0i[0]], -1.0); |
681 |
– |
fvsum(v2, vlist[p2i[0]], vlist[p0i[0]], -1.0); |
682 |
– |
fcross(vc1, v1, v2); |
683 |
– |
ok1 = normalize(vc1) != 0.0; |
684 |
– |
fvsum(v1, vlist[p2i[0]], vlist[p3i[0]], -1.0); |
685 |
– |
fvsum(v2, vlist[p1i[0]], vlist[p3i[0]], -1.0); |
686 |
– |
fcross(vc2, v1, v2); |
687 |
– |
ok2 = normalize(vc2) != 0.0; |
688 |
– |
if (!(ok1 | ok2)) |
689 |
– |
return(-1); |
690 |
– |
/* compute normal interpolation */ |
691 |
– |
axis = norminterp(norm, p0i, p1i, p2i, p3i); |
692 |
– |
|
693 |
– |
/* put out quadrilateral? */ |
694 |
– |
if (ok1 & ok2 && fabs(fdot(vc1,vc2)) >= 1.0-FTINY) { |
695 |
– |
printf("\n%s ", mod); |
696 |
– |
if (axis != -1) { |
697 |
– |
printf("texfunc %s\n", TEXNAME); |
698 |
– |
printf("4 surf_dx surf_dy surf_dz %s\n", QCALNAME); |
699 |
– |
printf("0\n13\t%d\n", axis); |
700 |
– |
pvect(norm[0]); |
701 |
– |
pvect(norm[1]); |
702 |
– |
pvect(norm[2]); |
703 |
– |
fvsum(v1, norm[3], vc1, -0.5); |
704 |
– |
fvsum(v1, v1, vc2, -0.5); |
705 |
– |
pvect(v1); |
706 |
– |
printf("\n%s ", TEXNAME); |
707 |
– |
} |
708 |
– |
printf("polygon %s.%d\n", name, faceno); |
709 |
– |
printf("0\n0\n12\n"); |
710 |
– |
pvect(vlist[p0i[0]]); |
711 |
– |
pvect(vlist[p1i[0]]); |
712 |
– |
pvect(vlist[p3i[0]]); |
713 |
– |
pvect(vlist[p2i[0]]); |
714 |
– |
return(1); |
715 |
– |
} |
716 |
– |
/* put out triangles? */ |
717 |
– |
if (ok1) { |
718 |
– |
printf("\n%s ", mod); |
719 |
– |
if (axis != -1) { |
720 |
– |
printf("texfunc %s\n", TEXNAME); |
721 |
– |
printf("4 surf_dx surf_dy surf_dz %s\n", QCALNAME); |
722 |
– |
printf("0\n13\t%d\n", axis); |
723 |
– |
pvect(norm[0]); |
724 |
– |
pvect(norm[1]); |
725 |
– |
pvect(norm[2]); |
726 |
– |
fvsum(v1, norm[3], vc1, -1.0); |
727 |
– |
pvect(v1); |
728 |
– |
printf("\n%s ", TEXNAME); |
729 |
– |
} |
730 |
– |
printf("polygon %s.%da\n", name, faceno); |
731 |
– |
printf("0\n0\n9\n"); |
732 |
– |
pvect(vlist[p0i[0]]); |
733 |
– |
pvect(vlist[p1i[0]]); |
734 |
– |
pvect(vlist[p2i[0]]); |
735 |
– |
} |
736 |
– |
if (ok2) { |
737 |
– |
printf("\n%s ", mod); |
738 |
– |
if (axis != -1) { |
739 |
– |
printf("texfunc %s\n", TEXNAME); |
740 |
– |
printf("4 surf_dx surf_dy surf_dz %s\n", QCALNAME); |
741 |
– |
printf("0\n13\t%d\n", axis); |
742 |
– |
pvect(norm[0]); |
743 |
– |
pvect(norm[1]); |
744 |
– |
pvect(norm[2]); |
745 |
– |
fvsum(v2, norm[3], vc2, -1.0); |
746 |
– |
pvect(v2); |
747 |
– |
printf("\n%s ", TEXNAME); |
748 |
– |
} |
749 |
– |
printf("polygon %s.%db\n", name, faceno); |
750 |
– |
printf("0\n0\n9\n"); |
751 |
– |
pvect(vlist[p2i[0]]); |
752 |
– |
pvect(vlist[p1i[0]]); |
753 |
– |
pvect(vlist[p3i[0]]); |
754 |
– |
} |
638 |
|
return(1); |
639 |
|
} |
640 |
|
|
641 |
|
|
759 |
– |
int |
760 |
– |
norminterp(resmat, p0i, p1i, p2i, p3i) /* compute normal interpolation */ |
761 |
– |
register FVECT resmat[4]; |
762 |
– |
register VNDX p0i, p1i, p2i, p3i; |
763 |
– |
{ |
764 |
– |
#define u ((ax+1)%3) |
765 |
– |
#define v ((ax+2)%3) |
766 |
– |
|
767 |
– |
register int ax; |
768 |
– |
MAT4 eqnmat; |
769 |
– |
FVECT v1; |
770 |
– |
register int i, j; |
771 |
– |
|
772 |
– |
if (!(p0i[2]>=0 && p1i[2]>=0 && p2i[2]>=0 && p3i[2]>=0)) |
773 |
– |
return(-1); |
774 |
– |
/* find dominant axis */ |
775 |
– |
VCOPY(v1, vnlist[p0i[2]]); |
776 |
– |
fvsum(v1, v1, vnlist[p1i[2]], 1.0); |
777 |
– |
fvsum(v1, v1, vnlist[p2i[2]], 1.0); |
778 |
– |
fvsum(v1, v1, vnlist[p3i[2]], 1.0); |
779 |
– |
ax = ABS(v1[0]) > ABS(v1[1]) ? 0 : 1; |
780 |
– |
ax = ABS(v1[ax]) > ABS(v1[2]) ? ax : 2; |
781 |
– |
/* assign equation matrix */ |
782 |
– |
eqnmat[0][0] = vlist[p0i[0]][u]*vlist[p0i[0]][v]; |
783 |
– |
eqnmat[0][1] = vlist[p0i[0]][u]; |
784 |
– |
eqnmat[0][2] = vlist[p0i[0]][v]; |
785 |
– |
eqnmat[0][3] = 1.0; |
786 |
– |
eqnmat[1][0] = vlist[p1i[0]][u]*vlist[p1i[0]][v]; |
787 |
– |
eqnmat[1][1] = vlist[p1i[0]][u]; |
788 |
– |
eqnmat[1][2] = vlist[p1i[0]][v]; |
789 |
– |
eqnmat[1][3] = 1.0; |
790 |
– |
eqnmat[2][0] = vlist[p2i[0]][u]*vlist[p2i[0]][v]; |
791 |
– |
eqnmat[2][1] = vlist[p2i[0]][u]; |
792 |
– |
eqnmat[2][2] = vlist[p2i[0]][v]; |
793 |
– |
eqnmat[2][3] = 1.0; |
794 |
– |
eqnmat[3][0] = vlist[p3i[0]][u]*vlist[p3i[0]][v]; |
795 |
– |
eqnmat[3][1] = vlist[p3i[0]][u]; |
796 |
– |
eqnmat[3][2] = vlist[p3i[0]][v]; |
797 |
– |
eqnmat[3][3] = 1.0; |
798 |
– |
/* invert matrix (solve system) */ |
799 |
– |
if (!invmat4(eqnmat, eqnmat)) |
800 |
– |
return(-1); /* no solution */ |
801 |
– |
/* compute result matrix */ |
802 |
– |
for (j = 0; j < 4; j++) |
803 |
– |
for (i = 0; i < 3; i++) |
804 |
– |
resmat[j][i] = eqnmat[j][0]*vnlist[p0i[2]][i] + |
805 |
– |
eqnmat[j][1]*vnlist[p1i[2]][i] + |
806 |
– |
eqnmat[j][2]*vnlist[p2i[2]][i] + |
807 |
– |
eqnmat[j][3]*vnlist[p3i[2]][i]; |
808 |
– |
return(ax); |
809 |
– |
|
810 |
– |
#undef u |
811 |
– |
#undef v |
812 |
– |
} |
813 |
– |
|
814 |
– |
|
642 |
|
freeverts() /* free all vertices */ |
643 |
|
{ |
644 |
|
if (nvs) { |
645 |
< |
free((char *)vlist); |
645 |
> |
free((void *)vlist); |
646 |
|
nvs = 0; |
647 |
|
} |
648 |
|
if (nvts) { |
649 |
< |
free((char *)vtlist); |
649 |
> |
free((void *)vtlist); |
650 |
|
nvts = 0; |
651 |
|
} |
652 |
|
if (nvns) { |
653 |
< |
free((char *)vnlist); |
653 |
> |
free((void *)vnlist); |
654 |
|
nvns = 0; |
655 |
|
} |
656 |
|
} |
664 |
|
if (nvs == 0) |
665 |
|
vlist = (FVECT *)malloc(CHUNKSIZ*sizeof(FVECT)); |
666 |
|
else |
667 |
< |
vlist = (FVECT *)realloc((char *)vlist, |
667 |
> |
vlist = (FVECT *)realloc((void *)vlist, |
668 |
|
(nvs+CHUNKSIZ)*sizeof(FVECT)); |
669 |
|
if (vlist == NULL) { |
670 |
|
fprintf(stderr, |
688 |
|
if (nvns == 0) |
689 |
|
vnlist = (FVECT *)malloc(CHUNKSIZ*sizeof(FVECT)); |
690 |
|
else |
691 |
< |
vnlist = (FVECT *)realloc((char *)vnlist, |
691 |
> |
vnlist = (FVECT *)realloc((void *)vnlist, |
692 |
|
(nvns+CHUNKSIZ)*sizeof(FVECT)); |
693 |
|
if (vnlist == NULL) { |
694 |
|
fprintf(stderr, |
712 |
|
{ |
713 |
|
if (!(nvts%CHUNKSIZ)) { /* allocate next block */ |
714 |
|
if (nvts == 0) |
715 |
< |
vtlist = (FLOAT (*)[2])malloc(CHUNKSIZ*2*sizeof(FLOAT)); |
715 |
> |
vtlist = (RREAL (*)[2])malloc(CHUNKSIZ*2*sizeof(RREAL)); |
716 |
|
else |
717 |
< |
vtlist = (FLOAT (*)[2])realloc((char *)vtlist, |
718 |
< |
(nvts+CHUNKSIZ)*2*sizeof(FLOAT)); |
717 |
> |
vtlist = (RREAL (*)[2])realloc((void *)vtlist, |
718 |
> |
(nvts+CHUNKSIZ)*2*sizeof(RREAL)); |
719 |
|
if (vtlist == NULL) { |
720 |
|
fprintf(stderr, |
721 |
|
"Out of memory while allocating texture vertex %d\n", |
730 |
|
} |
731 |
|
|
732 |
|
|
733 |
< |
syntax(fn, ln, er) /* report syntax error and exit */ |
907 |
< |
char *fn; |
908 |
< |
int ln; |
733 |
> |
syntax(er) /* report syntax error and exit */ |
734 |
|
char *er; |
735 |
|
{ |
736 |
|
fprintf(stderr, "%s: Wavefront syntax error near line %d: %s\n", |
737 |
< |
fn, ln, er); |
737 |
> |
inpfile, lineno, er); |
738 |
|
exit(1); |
739 |
|
} |