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/* Copyright (c) 1994 Regents of the University of California */ |
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/* Copyright (c) 1995 Regents of the University of California */ |
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/* SCCSid "$SunId$ LBL" */ |
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/* must include stdio.h before us */ |
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/* Entities (order doesn't really matter) */ |
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#define MG_E_COMMENT 0 |
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#define MG_E_COLOR 1 |
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#define MG_E_CONE 2 |
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#define MG_E_CXY 3 |
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#define MG_E_CYL 4 |
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#define MG_E_ED 5 |
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#define MG_E_FACE 6 |
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#define MG_E_INCLUDE 7 |
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#define MG_E_IES 8 |
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#define MG_E_MATERIAL 9 |
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#define MG_E_NORMAL 10 |
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#define MG_E_OBJECT 11 |
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#define MG_E_POINT 12 |
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#define MG_E_RD 13 |
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#define MG_E_RING 14 |
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#define MG_E_RS 15 |
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#define MG_E_SPH 16 |
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#define MG_E_TD 17 |
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#define MG_E_TORUS 18 |
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#define MG_E_TS 19 |
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#define MG_E_VERTEX 20 |
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#define MG_E_XF 21 |
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#define MG_VMAJOR 1 /* major version number */ |
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#define MG_VMINOR 0 /* minor version number */ |
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#define MG_NENTITIES 22 |
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/* Entities (list is only appended, never modified) */ |
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#define MG_E_COMMENT 0 /* # */ |
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#define MG_E_COLOR 1 /* c */ |
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#define MG_E_CCT 2 /* cct */ |
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#define MG_E_CONE 3 /* cone */ |
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#define MG_E_CMIX 4 /* cmix */ |
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#define MG_E_CSPEC 5 /* cspec */ |
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#define MG_E_CXY 6 /* cxy */ |
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#define MG_E_CYL 7 /* cyl */ |
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#define MG_E_ED 8 /* ed */ |
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#define MG_E_FACE 9 /* f */ |
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#define MG_E_INCLUDE 10 /* i */ |
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#define MG_E_IES 11 /* ies */ |
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#define MG_E_IR 12 /* ir */ |
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#define MG_E_MATERIAL 13 /* m */ |
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#define MG_E_NORMAL 14 /* n */ |
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#define MG_E_OBJECT 15 /* o */ |
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#define MG_E_POINT 16 /* p */ |
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#define MG_E_PRISM 17 /* prism */ |
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#define MG_E_RD 18 /* rd */ |
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#define MG_E_RING 19 /* ring */ |
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#define MG_E_RS 20 /* rs */ |
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#define MG_E_SIDES 21 /* sides */ |
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#define MG_E_SPH 22 /* sph */ |
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#define MG_E_TD 23 /* td */ |
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#define MG_E_TORUS 24 /* torus */ |
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#define MG_E_TS 25 /* ts */ |
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#define MG_E_VERTEX 26 /* v */ |
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#define MG_E_XF 27 /* xf */ |
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/* end of Version 1 entities */ |
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#define MG_NAMELIST {"#","c","cone","cxy","cyl","ed","f","i","ies",\ |
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"m","n","o","p","rd","ring","rs","sph","td","torus","ts","v","xf"} |
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#define MG_NENTITIES 28 /* total # entities */ |
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#define MG_NELIST {28} /* entity count for version 1 and up */ |
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#define MG_NAMELIST {"#","c","cct","cone","cmix","cspec","cxy","cyl","ed",\ |
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"f","i","ies","ir","m","n","o","p","prism","rd",\ |
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"ring","rs","sides","sph","td","torus","ts","v","xf"} |
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#define MG_MAXELEN 6 |
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extern char mg_ename[MG_NENTITIES][MG_MAXELEN]; |
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/* Handler routines for each entity */ |
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/* Handler routines for each entity and unknown ones */ |
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#ifdef NOPROTO |
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extern int (*mg_ehand[MG_NENTITIES])(); |
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extern int (*mg_uhand)(); |
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extern int mg_defuhand(); |
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#else |
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extern int (*mg_ehand[MG_NENTITIES])(int argc, char **argv); |
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extern int (*mg_uhand)(int argc, char **argv); |
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extern int mg_defuhand(int, char **); |
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#endif |
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extern unsigned mg_nunknown; /* count of unknown entities */ |
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/* Error codes */ |
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#define MG_OK 0 /* normal return value */ |
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#define MG_EUNK 1 /* unknown entity */ |
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#define MG_EMEM 8 /* out of memory */ |
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#define MG_ESEEK 9 /* file seek error */ |
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#define MG_EBADMAT 10 /* bad material specification */ |
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#define MG_ELINE 11 /* input line too long */ |
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#define MG_ECNTXT 12 /* unmatched context close */ |
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#define MG_NERRS 11 |
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#define MG_NERRS 13 |
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extern char *mg_err[MG_NERRS]; |
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extern char *mg_err[MG_NERRS]; /* list of error messages */ |
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/* |
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* The general process for running the parser is to fill in the mg_ehand |
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* To read from standard input, use NULL as the file name. |
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* For additional control over error reporting and file management, |
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* use mg_open, mg_read, mg_parse and mg_close instead of mg_load. |
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* To pass an entity of your own construction to the parser, use |
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* the mg_handle function rather than the mg_ehand routines directly. |
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* (The first argument to mg_handle is the entity #, or -1.) |
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* To free any data structures and clear the parser, use mg_clear. |
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* If there is an error, mg_load, mg_open, mg_parse, and mg_rewind |
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* will return an error from the list above. In addition, mg_load |
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* will report the error to stderr. The mg_read routine returns 0 |
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* when the end of file has been reached. |
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* If there is an error, mg_load, mg_open, mg_parse, mg_handle and |
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* mg_fgoto will return an error from the list above. In addition, |
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* mg_load will report the error to stderr. The mg_read routine |
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* returns 0 when the end of file has been reached. |
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*/ |
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#define MG_MAXLINE 512 /* maximum input line length */ |
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#define MG_MAXLINE 4096 /* maximum input line length */ |
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#define MG_MAXARGC (MG_MAXLINE/4) /* maximum argument count */ |
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typedef struct mg_fctxt { |
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char *fname; /* file name */ |
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char fname[96]; /* file name */ |
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FILE *fp; /* stream pointer */ |
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int fid; /* unique file context id */ |
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char inpline[MG_MAXLINE]; /* input line */ |
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int lineno; /* line number */ |
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struct mg_fctxt *prev; /* previous context */ |
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} MG_FCTXT; |
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typedef struct { |
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int fid; /* file this position is for */ |
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int lineno; /* line number in file */ |
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long offset; /* offset from beginning */ |
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} MG_FPOS; |
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|
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extern MG_FCTXT *mg_file; /* current file context */ |
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#ifdef NOPROTO |
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extern int mg_open(); /* open new input file */ |
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extern int mg_read(); /* read next line */ |
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extern int mg_parse(); /* parse current line */ |
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extern int mg_rewind(); /* rewind input file */ |
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extern void mg_fgetpos(); /* get position on input file */ |
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extern int mg_fgoto(); /* go to position on input file */ |
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extern void mg_close(); /* close input file */ |
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extern void mg_clear(); /* clear parser */ |
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extern int mg_iterate(); |
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extern int mg_handle(); /* handle an entity */ |
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#else |
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extern void mg_init(void); /* fill in mg_ehand array */ |
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extern int mg_load(char *); /* parse a file */ |
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extern int mg_open(MG_FCTXT *, char *); /* open new input file */ |
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extern int mg_read(void); /* read next line */ |
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extern int mg_parse(void); /* parse current line */ |
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extern int mg_rewind(void); /* rewind input file */ |
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extern void mg_fgetpos(MG_FPOS *); /* get position on input file */ |
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extern int mg_fgoto(MG_FPOS *); /* go to position on input file */ |
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extern void mg_close(void); /* close input file */ |
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extern void mg_clear(void); /* clear parser */ |
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extern int mg_iterate(int, char **, int (*)(void)); |
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extern int mg_handle(int, int, char **); /* handle an entity */ |
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#endif |
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#ifndef MG_NQCD |
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extern int mg_entity(); /* get entity number from its name */ |
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extern int isint(); /* non-zero if integer format */ |
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extern int isflt(); /* non-zero if floating point format */ |
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extern int isname(); /* non-zero if legal identifier name */ |
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#else |
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extern int mg_entity(char *); /* get entity number from its name */ |
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extern int isint(char *); /* non-zero if integer format */ |
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extern int isflt(char *); /* non-zero if floating point format */ |
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extern int isname(char *); /* non-zero if legal identifier name */ |
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#endif |
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/************************************************************************ |
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(vr)[1]=(v1)[1]+(f)*(v2)[1], \ |
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(vr)[2]=(v1)[2]+(f)*(v2)[2]) |
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#define is0vect(v) (DOT(v,v) < FTINY*FTINY) |
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#define is0vect(v) (DOT(v,v) <= FTINY*FTINY) |
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#define round0(x) if (x <= FTINY && x >= -FTINY) x = 0 |
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* (materials, colors, vectors) |
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*/ |
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#define C_CMINWL 380 /* minimum wavelength */ |
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#define C_CMAXWL 780 /* maximum wavelength */ |
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#define C_CNSS 41 /* number of spectral samples */ |
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#define C_CWLI ((C_CMAXWL-C_CMINWL)/(C_CNSS-1)) |
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#define C_CMAXV 10000 /* nominal maximum sample value */ |
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#define C_CLPWM (683./C_CMAXV) /* peak lumens/watt multiplier */ |
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|
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#define C_CSSPEC 01 /* flag if spectrum is set */ |
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#define C_CDSPEC 02 /* flag if defined w/ spectrum */ |
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#define C_CSXY 04 /* flag if xy is set */ |
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#define C_CDXY 010 /* flag if defined w/ xy */ |
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#define C_CSEFF 020 /* flag if efficacy set */ |
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|
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typedef struct { |
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float cx, cy; /* XY chromaticity coordinates */ |
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} C_COLOR; /* color context */ |
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int clock; /* incremented each change */ |
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short flags; /* what's been set */ |
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short ssamp[C_CNSS]; /* spectral samples, min wl to max */ |
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long ssum; /* straight sum of spectral values */ |
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float cx, cy; /* xy chromaticity value */ |
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float eff; /* efficacy (lumens/watt) */ |
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} C_COLOR; |
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|
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#define C_DEFCOLOR { 1, C_CDXY|C_CSXY|C_CSSPEC|C_CSEFF,\ |
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{C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\ |
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C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\ |
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C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\ |
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C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\ |
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C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\ |
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C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\ |
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C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV},\ |
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(long)C_CNSS*C_CMAXV, 1./3., 1./3., 178.006 } |
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|
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#define c_cval(c,l) ((double)(c)->ssamp[((l)-C_MINWL)/C_CWLI] / (c)->ssum) |
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|
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#define C_1SIDEDTHICK 0.005 /* assumed thickness of 1-sided mat. */ |
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|
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typedef struct { |
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char *name; /* material name */ |
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int clock; /* incremented each change -- resettable */ |
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int sided; /* 1 if surface is 1-sided, 0 for 2-sided */ |
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float nr, ni; /* index of refraction, real and imaginary */ |
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float rd; /* diffuse reflectance */ |
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C_COLOR rd_c; /* diffuse reflectance color */ |
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float td; /* diffuse transmittance */ |
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} C_MATERIAL; /* material context */ |
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|
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typedef struct { |
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int clock; /* incremented each change -- resettable */ |
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FVECT p, n; /* point and normal */ |
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} C_VERTEX; /* vertex context */ |
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|
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#define isgrey(cxy) ((cxy)->cx > .31 && (cxy)->cx < .35 && \ |
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(cxy)->cy > .31 && (cxy)->cy < .35) |
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|
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#define C_DEFCOLOR {.333,.333} |
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#define C_DEFMATERIAL {NULL,1,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\ |
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#define C_DEFMATERIAL {1,0,1.,0.,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\ |
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0.,C_DEFCOLOR,0.,0.,C_DEFCOLOR,0.} |
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#define C_DEFVERTEX {{0.,0.,0.},{0.,0.,0.}} |
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#define C_DEFVERTEX {1,{0.,0.,0.},{0.,0.,0.}} |
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|
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extern C_COLOR *c_ccolor; /* the current color */ |
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extern char *c_ccname; /* current color name */ |
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extern C_MATERIAL *c_cmaterial; /* the current material */ |
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extern char *c_cmname; /* current material name */ |
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extern C_VERTEX *c_cvertex; /* the current vertex */ |
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extern char *c_cvname; /* current vertex name */ |
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|
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#ifdef NOPROTO |
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extern int c_hcolor(); /* handle color entity */ |
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extern int c_hmaterial(); /* handle material entity */ |
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extern int c_hvertex(); /* handle vertex entity */ |
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extern void c_clearall(); /* clear context tables */ |
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extern C_MATERIAL *c_getmaterial(); /* get a named material */ |
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extern C_VERTEX *c_getvert(); /* get a named vertex */ |
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+ |
extern C_COLOR *c_getcolor(); /* get a named color */ |
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extern void c_ccvt(); /* fix color representation */ |
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extern int c_isgrey(); /* check if color is grey */ |
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#else |
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extern int c_hcolor(int, char **); /* handle color entity */ |
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extern int c_hmaterial(int, char **); /* handle material entity */ |
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extern int c_hvertex(int, char **); /* handle vertex entity */ |
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extern void c_clearall(void); /* clear context tables */ |
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extern C_MATERIAL *c_getmaterial(char *); /* get a named material */ |
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extern C_VERTEX *c_getvert(char *); /* get a named vertex */ |
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+ |
extern C_COLOR *c_getcolor(char *); /* get a named color */ |
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+ |
extern void c_ccvt(C_COLOR *, int); /* fix color representation */ |
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extern int c_isgrey(C_COLOR *); /* check if color is grey */ |
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#endif |
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|
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/************************************************************************* |
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#define copymat4(m4a,m4b) bcopy((char *)m4b,(char *)m4a,sizeof(MAT4)) |
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#else |
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#define copymat4(m4a,m4b) (void)memcpy((char *)m4a,(char *)m4b,sizeof(MAT4)) |
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extern char *memcpy(); |
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#endif |
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|
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#define MAT4IDENT { {1.,0.,0.,0.}, {0.,1.,0.,0.}, \ |
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|
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/* regular transformation */ |
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typedef struct { |
| 338 |
< |
MAT4 xfm; /* transform matrix */ |
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< |
FLOAT sca; /* scalefactor */ |
| 338 |
> |
MAT4 xfm; /* transform matrix */ |
| 339 |
> |
FLOAT sca; /* scalefactor */ |
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} XF; |
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|
| 342 |
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#define identxf(xp) (void)(setident4((xp)->xfm),(xp)->sca=1.0) |
| 343 |
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|
| 344 |
+ |
#define XF_MAXDIM 8 /* maximum array dimensions */ |
| 345 |
+ |
|
| 346 |
+ |
struct xf_array { |
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+ |
MG_FPOS spos; /* starting position on input */ |
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+ |
int ndim; /* number of array dimensions */ |
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+ |
struct { |
| 350 |
+ |
short i, n; /* current count and maximum */ |
| 351 |
+ |
char arg[8]; /* string argument value */ |
| 352 |
+ |
} aarg[XF_MAXDIM]; |
| 353 |
+ |
}; |
| 354 |
+ |
|
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typedef struct xf_spec { |
| 356 |
< |
short xac; /* transform argument count */ |
| 357 |
< |
short xav0; /* zeroeth argument in xf_argv array */ |
| 358 |
< |
XF xf; /* cumulative transformation */ |
| 359 |
< |
struct xf_spec *prev; /* previous transformation context */ |
| 360 |
< |
} XF_SPEC; |
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> |
long xid; /* unique transform id */ |
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> |
short xac; /* context argument count */ |
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> |
short rev; /* boolean true if vertices reversed */ |
| 359 |
> |
XF xf; /* cumulative transformation */ |
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> |
struct xf_array *xarr; /* transformation array pointer */ |
| 361 |
> |
struct xf_spec *prev; /* previous transformation context */ |
| 362 |
> |
} XF_SPEC; /* followed by argument buffer */ |
| 363 |
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|
| 364 |
< |
extern int xf_argc; /* total # transform args. */ |
| 365 |
< |
extern char **xf_argv; /* transform arguments */ |
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< |
extern XF_SPEC *xf_context; /* current context */ |
| 364 |
> |
extern XF_SPEC *xf_context; /* current transform context */ |
| 365 |
> |
extern char **xf_argend; /* last transform argument */ |
| 366 |
|
|
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+ |
#define xf_ac(xf) ((xf)->xac) |
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+ |
#define xf_av(xf) (xf_argend - (xf)->xac) |
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+ |
|
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+ |
#define xf_argc (xf_context==NULL ? 0 : xf_ac(xf_context)) |
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+ |
#define xf_argv xf_av(xf_context) |
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+ |
|
| 373 |
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/* |
| 374 |
|
* The transformation handler should do most of the work that needs |
| 375 |
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* doing. Just pass it any xf entities, then use the associated |
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extern void multmat4(MAT4, MAT4, MAT4); /* m4a = m4b X m4c */ |
| 413 |
|
extern void multv3(FVECT, FVECT, MAT4); /* v3a = v3b X m4 (vectors) */ |
| 414 |
|
extern void multp3(FVECT, FVECT, MAT4); /* p3a = p3b X m4 (points) */ |
| 415 |
< |
extern int xf(XF, int, char **); /* interpret transform spec. */ |
| 415 |
> |
extern int xf(XF *, int, char **); /* interpret transform spec. */ |
| 416 |
|
|
| 417 |
|
#endif |
| 418 |
|
|
| 437 |
|
extern MEM_PTR malloc(); |
| 438 |
|
extern MEM_PTR calloc(); |
| 439 |
|
extern MEM_PTR realloc(); |
| 440 |
+ |
extern void free(); |
