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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_CMIX 3 |
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#define MG_E_CXY 4 |
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#define MG_E_CSPEC 5 |
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#define MG_E_CYL 6 |
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#define MG_E_ED 7 |
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#define MG_E_FACE 8 |
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#define MG_E_INCLUDE 9 |
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#define MG_E_IES 10 |
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#define MG_E_MATERIAL 11 |
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#define MG_E_NORMAL 12 |
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#define MG_E_OBJECT 13 |
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#define MG_E_POINT 14 |
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#define MG_E_PRISM 15 |
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#define MG_E_RD 16 |
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#define MG_E_RING 17 |
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#define MG_E_RS 18 |
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#define MG_E_SPH 19 |
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#define MG_E_TD 20 |
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#define MG_E_TORUS 21 |
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#define MG_E_TS 22 |
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#define MG_E_VERTEX 23 |
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#define MG_E_XF 24 |
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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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#define MG_NENTITIES 25 |
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#define MG_NENTITIES 28 /* total # entities */ |
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#define MG_NAMELIST {"#","c","cone","cmix","cspec","cxy","cyl","ed","f",\ |
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"i","ies","m","n","o","p","prism","rd","ring","rs",\ |
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"sph","td","torus","ts","v","xf"} |
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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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* 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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|
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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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|
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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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|
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/* The following structure will change when we add spectral data support */ |
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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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#ifdef later |
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#define C_CMAXWL 780 /* maximum wavelength */ |
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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_WLINC ((C_MAXWL-C_MINWL)/(C_NSS-1)) /* 10 nm increment */ |
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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_CXY 1 /* flag if has xy chromaticity */ |
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#define C_CSPEC 2 /* flag if has spectrum */ |
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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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int clock; /* incremented each change */ |
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short flags; /* what's been set */ |
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float cx, cy; /* xy chromaticity value */ |
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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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#define C_DEFCOLOR { C_CXY|C_CSPEC, 1./3., 1./3., |
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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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(long)C_CNSS*C_MAXV } |
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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_CIEX { C_CXY|C_CSPEC, ???, ???, |
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{14,42,143,435,1344,2839,3483,3362,2908,1954,956,\ |
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320,49,93,633,1655,2904,4334,5945,7621,9163,10263,\ |
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< |
10622,10026,8544,6424,4479,2835,1649,874,468,227,\ |
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114,58,29,14,7,3,2,1,0}, 106836L } |
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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_CIEY { C_CXY|C_CSPEC, ???, ???, |
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{0,1,4,12,40,116,230,380,600,910,1390,2080,3230,\ |
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5030,7100,8620,9540,9950,9950,9520,8700,7570,6310,\ |
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5030,3810,2650,1750,1070,610,320,170,82,41,21,10,\ |
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5,2,1,1,0,0}, 106856L } |
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#define C_1SIDEDTHICK 0.005 /* assumed thickness of 1-sided mat. */ |
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|
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#define C_CIEZ { C_CXY|C_CSPEC, ???, ???, |
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{65,201,679,2074,6456,13856,17471,17721,16692,\ |
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12876,8130,4652,2720,1582,782,422,203,87,39,21,17,\ |
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11,8,3,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}, 106770L } |
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|
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#define c_cval(c,l) ((double)(c)->ssamp[((l)-C_MINWL)/C_WLINC] / (c)->sum) |
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|
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#endif |
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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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|
| 251 |
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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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|
| 256 |
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#define isgrey(cxy) ((cxy)->cx > .32 && (cxy)->cx < .34 && \ |
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(cxy)->cy > .32 && (cxy)->cy < .34) |
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|
| 258 |
< |
#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,\ |
| 257 |
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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.}} |
| 258 |
> |
#define C_DEFVERTEX {1,{0.,0.,0.},{0.,0.,0.}} |
| 259 |
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|
| 260 |
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extern C_COLOR *c_ccolor; /* the current color */ |
| 261 |
+ |
extern char *c_ccname; /* current color name */ |
| 262 |
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extern C_MATERIAL *c_cmaterial; /* the current material */ |
| 263 |
+ |
extern char *c_cmname; /* current material name */ |
| 264 |
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extern C_VERTEX *c_cvertex; /* the current vertex */ |
| 265 |
+ |
extern char *c_cvname; /* current vertex name */ |
| 266 |
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|
| 267 |
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#ifdef NOPROTO |
| 268 |
|
extern int c_hcolor(); /* handle color entity */ |
| 269 |
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extern int c_hmaterial(); /* handle material entity */ |
| 270 |
|
extern int c_hvertex(); /* handle vertex entity */ |
| 271 |
|
extern void c_clearall(); /* clear context tables */ |
| 272 |
+ |
extern C_MATERIAL *c_getmaterial(); /* get a named material */ |
| 273 |
|
extern C_VERTEX *c_getvert(); /* get a named vertex */ |
| 274 |
+ |
extern C_COLOR *c_getcolor(); /* get a named color */ |
| 275 |
+ |
extern void c_ccvt(); /* fix color representation */ |
| 276 |
+ |
extern int c_isgrey(); /* check if color is grey */ |
| 277 |
|
#else |
| 278 |
|
extern int c_hcolor(int, char **); /* handle color entity */ |
| 279 |
|
extern int c_hmaterial(int, char **); /* handle material entity */ |
| 280 |
|
extern int c_hvertex(int, char **); /* handle vertex entity */ |
| 281 |
|
extern void c_clearall(void); /* clear context tables */ |
| 282 |
+ |
extern C_MATERIAL *c_getmaterial(char *); /* get a named material */ |
| 283 |
|
extern C_VERTEX *c_getvert(char *); /* get a named vertex */ |
| 284 |
+ |
extern C_COLOR *c_getcolor(char *); /* get a named color */ |
| 285 |
+ |
extern void c_ccvt(C_COLOR *, int); /* fix color representation */ |
| 286 |
+ |
extern int c_isgrey(C_COLOR *); /* check if color is grey */ |
| 287 |
|
#endif |
| 288 |
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|
| 289 |
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/************************************************************************* |
| 311 |
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#define copymat4(m4a,m4b) bcopy((char *)m4b,(char *)m4a,sizeof(MAT4)) |
| 312 |
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#else |
| 313 |
|
#define copymat4(m4a,m4b) (void)memcpy((char *)m4a,(char *)m4b,sizeof(MAT4)) |
| 306 |
– |
extern char *memcpy(); |
| 314 |
|
#endif |
| 315 |
|
|
| 316 |
|
#define MAT4IDENT { {1.,0.,0.,0.}, {0.,1.,0.,0.}, \ |
| 322 |
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|
| 323 |
|
/* regular transformation */ |
| 324 |
|
typedef struct { |
| 325 |
< |
MAT4 xfm; /* transform matrix */ |
| 326 |
< |
FLOAT sca; /* scalefactor */ |
| 325 |
> |
MAT4 xfm; /* transform matrix */ |
| 326 |
> |
FLOAT sca; /* scalefactor */ |
| 327 |
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} XF; |
| 328 |
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|
| 329 |
|
#define identxf(xp) (void)(setident4((xp)->xfm),(xp)->sca=1.0) |
| 330 |
|
|
| 331 |
+ |
#define XF_MAXDIM 8 /* maximum array dimensions */ |
| 332 |
+ |
|
| 333 |
+ |
struct xf_array { |
| 334 |
+ |
MG_FPOS spos; /* starting position on input */ |
| 335 |
+ |
int ndim; /* number of array dimensions */ |
| 336 |
+ |
struct { |
| 337 |
+ |
short i, n; /* current count and maximum */ |
| 338 |
+ |
char arg[8]; /* string argument value */ |
| 339 |
+ |
} aarg[XF_MAXDIM]; |
| 340 |
+ |
}; |
| 341 |
+ |
|
| 342 |
|
typedef struct xf_spec { |
| 343 |
< |
short xac; /* transform argument count */ |
| 344 |
< |
short xav0; /* zeroeth argument in xf_argv array */ |
| 345 |
< |
XF xf; /* cumulative transformation */ |
| 346 |
< |
struct xf_spec *prev; /* previous transformation context */ |
| 347 |
< |
} XF_SPEC; |
| 343 |
> |
long xid; /* unique transform id */ |
| 344 |
> |
short xac; /* context argument count */ |
| 345 |
> |
short rev; /* boolean true if vertices reversed */ |
| 346 |
> |
XF xf; /* cumulative transformation */ |
| 347 |
> |
struct xf_array *xarr; /* transformation array pointer */ |
| 348 |
> |
struct xf_spec *prev; /* previous transformation context */ |
| 349 |
> |
} XF_SPEC; /* followed by argument buffer */ |
| 350 |
|
|
| 351 |
< |
extern int xf_argc; /* total # transform args. */ |
| 352 |
< |
extern char **xf_argv; /* transform arguments */ |
| 333 |
< |
extern XF_SPEC *xf_context; /* current context */ |
| 351 |
> |
extern XF_SPEC *xf_context; /* current transform context */ |
| 352 |
> |
extern char **xf_argend; /* last transform argument */ |
| 353 |
|
|
| 354 |
+ |
#define xf_ac(xf) ((xf)->xac) |
| 355 |
+ |
#define xf_av(xf) (xf_argend - (xf)->xac) |
| 356 |
+ |
|
| 357 |
+ |
#define xf_argc (xf_context==NULL ? 0 : xf_ac(xf_context)) |
| 358 |
+ |
#define xf_argv xf_av(xf_context) |
| 359 |
+ |
|
| 360 |
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/* |
| 361 |
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* The transformation handler should do most of the work that needs |
| 362 |
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* doing. Just pass it any xf entities, then use the associated |
| 399 |
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extern void multmat4(MAT4, MAT4, MAT4); /* m4a = m4b X m4c */ |
| 400 |
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extern void multv3(FVECT, FVECT, MAT4); /* v3a = v3b X m4 (vectors) */ |
| 401 |
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extern void multp3(FVECT, FVECT, MAT4); /* p3a = p3b X m4 (points) */ |
| 402 |
< |
extern int xf(XF, int, char **); /* interpret transform spec. */ |
| 402 |
> |
extern int xf(XF *, int, char **); /* interpret transform spec. */ |
| 403 |
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| 404 |
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#endif |
| 405 |
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