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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Convert a Wavefront .obj file to Radiance format. |
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* Convert a Wavefront .OBJ file to Radiance format. |
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* |
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* Currently, we support only polygonal geometry. Non-planar |
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* faces are broken rather haphazardly into triangles. |
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*/ |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <ctype.h> |
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#include "rtmath.h" |
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#define DEFOBJ "unnamed" /* default object name */ |
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#define DEFMAT "white" /* default material name */ |
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|
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#define pvect(v) printf("%18.12g %18.12g %18.12g\n",(v)[0],(v)[1],(v)[2]) |
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#define pvect(v) printf(" %18.12g %18.12g %18.12g\n",(v)[0],(v)[1],(v)[2]) |
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FVECT *vlist; /* our vertex list */ |
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int nvs; /* number of vertices in our list */ |
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int flatten = 0; /* discard surface normal information */ |
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char mapname[128]; /* current picture file */ |
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char matname[64]; /* current material name */ |
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char group[16][32]; /* current group names */ |
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char objname[128]; /* current object name */ |
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char mapname[256]; /* current picture file */ |
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char matname[256]; /* current material name */ |
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char group[8][256]; /* current group name(s) */ |
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char objname[256]; /* current object name */ |
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char *inpfile; /* input file name */ |
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int lineno; /* current line number */ |
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int faceno; /* current face number */ |
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int |
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main( /* read in .obj file and convert */ |
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main( /* read in .OBJ file and convert */ |
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int argc, |
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char *argv[] |
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) |
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char *argv[MAXARG]; |
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int argc; |
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ID tmpid; |
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register int i; |
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int i; |
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while ( (argc = getstmt(argv, fp)) ) |
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switch (argv[0][0]) { |
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void |
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convert( /* convert a T-mesh */ |
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convert( /* convert an OBJ stream */ |
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FILE *fp |
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) |
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{ |
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char *argv[MAXARG]; |
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int argc; |
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int nstats, nunknown; |
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register int i; |
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int i; |
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nstats = nunknown = 0; |
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/* scan until EOF */ |
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goto unknown; |
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for (i = 1; i < argc; i++) |
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strcpy(group[i-1], argv[i]); |
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group[i-1][0] = '\0'; |
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group[argc-1][0] = '\0'; |
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break; |
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case '#': /* comment */ |
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printargs(argc, argv, stdout); |
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int |
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getstmt( /* read the next statement from fp */ |
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register char *av[MAXARG], |
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char *av[MAXARG], |
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FILE *fp |
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) |
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{ |
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static char sbuf[MAXARG*16]; |
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register char *cp; |
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register int i; |
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char *cp; |
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int i; |
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do { |
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if (fgetline(cp=sbuf, sizeof(sbuf), fp) == NULL) |
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char * |
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getmtl(void) /* figure material for this face */ |
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{ |
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register RULEHD *rp = ourmapping; |
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RULEHD *rp = ourmapping; |
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|
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if (rp == NULL) { /* no rule set */ |
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if (matname[0]) |
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getonm(void) /* invent a good name for object */ |
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{ |
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static char name[64]; |
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register char *cp1, *cp2; |
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register int i; |
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char *cp1, *cp2; |
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int i; |
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/* check for preset */ |
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if (objname[0]) |
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return(objname); |
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int |
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matchrule( /* check for a match on this rule */ |
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register RULEHD *rp |
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RULEHD *rp |
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) |
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{ |
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ID tmpid; |
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int gotmatch; |
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register int i; |
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int i; |
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if (rp->qflg & FL(Q_MTL)) { |
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if (!matname[0]) |
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|
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int |
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cvtndx( /* convert vertex string to index */ |
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register VNDX vi, |
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register char *vs |
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VNDX vi, |
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char *vs |
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) |
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{ |
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/* get point */ |
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int |
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nonplanar( /* are vertices non-planar? */ |
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register int ac, |
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register char **av |
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int ac, |
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char **av |
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) |
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{ |
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VNDX vi; |
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RREAL *p0, *p1; |
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FVECT v1, v2, nsum, newn; |
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double d; |
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register int i; |
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int i; |
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if (!cvtndx(vi, av[0])) |
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return(0); |
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int |
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putface( /* put out an N-sided polygon */ |
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int ac, |
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register char **av |
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char **av |
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) |
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{ |
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VNDX vi; |
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char *cp; |
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register int i; |
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int i; |
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if (nonplanar(ac, av)) { /* break into triangles */ |
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while (ac > 2) { |
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RREAL bcoor[3][3]; |
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int texOK = 0, patOK; |
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int flatness; |
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register int i; |
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int i; |
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|
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if ((mod = getmtl()) == NULL) |
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return(-1); |