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greg |
1.1 |
/* Copyright (c) 1994 Regents of the University of California */ |
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/* SCCSid "$SunId$ LBL" */ |
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/* |
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* Header file for MGF interpreter |
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*/ |
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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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greg |
1.5 |
#define MG_E_CMIX 3 |
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greg |
1.6 |
#define MG_E_CSPEC 4 |
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#define MG_E_CXY 5 |
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greg |
1.5 |
#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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greg |
1.13 |
#define MG_E_SIDES 19 |
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#define MG_E_SPH 20 |
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#define MG_E_TD 21 |
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#define MG_E_TORUS 22 |
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#define MG_E_TS 23 |
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#define MG_E_VERTEX 24 |
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#define MG_E_XF 25 |
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greg |
1.1 |
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greg |
1.13 |
#define MG_NENTITIES 26 |
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greg |
1.1 |
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greg |
1.5 |
#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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greg |
1.13 |
"sides","sph","td","torus","ts","v","xf"} |
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greg |
1.1 |
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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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#ifdef NOPROTO |
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extern int (*mg_ehand[MG_NENTITIES])(); |
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#else |
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extern int (*mg_ehand[MG_NENTITIES])(int argc, char **argv); |
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#endif |
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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_EARGC 2 /* wrong number of arguments */ |
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#define MG_ETYPE 3 /* argument type error */ |
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#define MG_EILL 4 /* illegal argument value */ |
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#define MG_EUNDEF 5 /* undefined reference */ |
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#define MG_ENOFILE 6 /* cannot open input file */ |
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#define MG_EINCL 7 /* error in included file */ |
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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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greg |
1.2 |
#define MG_EBADMAT 10 /* bad material specification */ |
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greg |
1.1 |
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greg |
1.2 |
#define MG_NERRS 11 |
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greg |
1.1 |
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extern char *mg_err[MG_NERRS]; |
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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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* array with handlers for each entity you know how to handle. |
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* Then, call mg_init to fill in the rest. This function will report |
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* an error and quit if you try to support an inconsistent set of entities. |
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* For each file you want to parse, call mg_load with the file name. |
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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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greg |
1.10 |
* 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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greg |
1.1 |
* 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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*/ |
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#define MG_MAXLINE 512 /* 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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greg |
1.7 |
char fname[96]; /* file name */ |
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greg |
1.1 |
FILE *fp; /* stream pointer */ |
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greg |
1.10 |
int fid; /* unique file context id */ |
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greg |
1.1 |
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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greg |
1.10 |
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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greg |
1.1 |
extern MG_FCTXT *mg_file; /* current file context */ |
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#ifdef NOPROTO |
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extern void mg_init(); /* fill in mg_ehand array */ |
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extern int mg_load(); /* parse a file */ |
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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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greg |
1.10 |
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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greg |
1.1 |
extern void mg_close(); /* close input file */ |
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extern void mg_clear(); /* clear parser */ |
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greg |
1.10 |
extern int mg_handle(); /* handle an entity */ |
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greg |
1.1 |
#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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greg |
1.10 |
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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greg |
1.1 |
extern void mg_close(void); /* close input file */ |
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extern void mg_clear(void); /* clear parser */ |
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greg |
1.10 |
extern int mg_handle(int, int, char **); /* handle an entity */ |
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greg |
1.1 |
#endif |
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#ifndef MG_NQCD |
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#define MG_NQCD 5 /* default number of divisions */ |
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#endif |
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extern int mg_nqcdivs; /* divisions per quarter circle */ |
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/* |
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* The following library routines are included for your convenience: |
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*/ |
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#ifdef NOPROTO |
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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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#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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#endif |
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/************************************************************************ |
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* Definitions for 3-d vector manipulation functions |
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*/ |
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greg |
1.3 |
#ifdef SMLFLT |
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#define FLOAT float |
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#define FTINY (1e-3) |
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greg |
1.2 |
#else |
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greg |
1.3 |
#define FLOAT double |
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#define FTINY (1e-6) |
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greg |
1.2 |
#endif |
168 |
greg |
1.3 |
#define FHUGE (1e10) |
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greg |
1.1 |
|
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greg |
1.2 |
typedef FLOAT FVECT[3]; |
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greg |
1.3 |
#define VCOPY(v1,v2) ((v1)[0]=(v2)[0],(v1)[1]=(v2)[1],(v1)[2]=(v2)[2]) |
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#define DOT(v1,v2) ((v1)[0]*(v2)[0]+(v1)[1]*(v2)[1]+(v1)[2]*(v2)[2]) |
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#define VSUM(vr,v1,v2,f) ((vr)[0]=(v1)[0]+(f)*(v2)[0], \ |
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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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greg |
1.6 |
#define is0vect(v) (DOT(v,v) <= FTINY*FTINY) |
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greg |
1.3 |
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#define round0(x) if (x <= FTINY && x >= -FTINY) x = 0 |
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greg |
1.1 |
#ifdef NOPROTO |
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extern double normalize(); /* normalize a vector */ |
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#else |
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extern double normalize(FVECT); /* normalize a vector */ |
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#endif |
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/************************************************************************ |
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* Definitions for context handling routines |
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* (materials, colors, vectors) |
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*/ |
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greg |
1.6 |
#define C_CMINWL 380 /* minimum wavelength */ |
194 |
greg |
1.5 |
#define C_CMAXWL 780 /* maximum wavelength */ |
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#define C_CNSS 41 /* number of spectral samples */ |
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greg |
1.6 |
#define C_CWLI ((C_CMAXWL-C_CMINWL)/(C_CNSS-1)) |
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greg |
1.5 |
#define C_CMAXV 10000 /* nominal maximum sample value */ |
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greg |
1.6 |
#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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greg |
1.5 |
|
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greg |
1.1 |
typedef struct { |
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greg |
1.8 |
int clock; /* incremented each change */ |
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greg |
1.5 |
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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greg |
1.6 |
float cx, cy; /* xy chromaticity value */ |
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greg |
1.5 |
} C_COLOR; |
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greg |
1.12 |
#define C_DEFCOLOR { 1, C_CDXY|C_CSXY|C_CSSPEC,\ |
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greg |
1.5 |
{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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greg |
1.6 |
(long)C_CNSS*C_CMAXV, 1./3., 1./3. } |
221 |
greg |
1.5 |
|
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greg |
1.12 |
#define C_CIEX { 1, C_CDSPEC|C_CSSPEC|C_CSXY,\ |
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greg |
1.5 |
{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,\ |
226 |
greg |
1.6 |
114,58,29,14,7,3,2,1,0}, 106836L, .735, .265 } |
227 |
greg |
1.5 |
|
228 |
greg |
1.12 |
#define C_CIEY { 1, C_CDSPEC|C_CSSPEC|C_CSXY,\ |
229 |
greg |
1.5 |
{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,\ |
232 |
greg |
1.6 |
5,2,1,1,0,0}, 106856L, .274, .717 } |
233 |
greg |
1.5 |
|
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greg |
1.12 |
#define C_CIEZ { 1, C_CDSPEC|C_CSSPEC|C_CSXY,\ |
235 |
greg |
1.5 |
{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,\ |
237 |
greg |
1.6 |
11,8,3,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},\ |
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106770L, .167, .009 } |
239 |
greg |
1.5 |
|
240 |
greg |
1.6 |
#define c_cval(c,l) ((double)(c)->ssamp[((l)-C_MINWL)/C_CWLI] / (c)->sum) |
241 |
greg |
1.5 |
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242 |
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typedef struct { |
243 |
greg |
1.2 |
int clock; /* incremented each change -- resettable */ |
244 |
greg |
1.13 |
int sided; /* 1 if surface is 1-sided, 0 for 2-sided */ |
245 |
greg |
1.2 |
float rd; /* diffuse reflectance */ |
246 |
greg |
1.1 |
C_COLOR rd_c; /* diffuse reflectance color */ |
247 |
greg |
1.2 |
float td; /* diffuse transmittance */ |
248 |
greg |
1.1 |
C_COLOR td_c; /* diffuse transmittance color */ |
249 |
greg |
1.2 |
float ed; /* diffuse emittance */ |
250 |
greg |
1.1 |
C_COLOR ed_c; /* diffuse emittance color */ |
251 |
greg |
1.2 |
float rs; /* specular reflectance */ |
252 |
greg |
1.1 |
C_COLOR rs_c; /* specular reflectance color */ |
253 |
greg |
1.2 |
float rs_a; /* specular reflectance roughness */ |
254 |
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float ts; /* specular transmittance */ |
255 |
greg |
1.1 |
C_COLOR ts_c; /* specular transmittance color */ |
256 |
greg |
1.2 |
float ts_a; /* specular transmittance roughness */ |
257 |
greg |
1.1 |
} C_MATERIAL; /* material context */ |
258 |
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259 |
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typedef struct { |
260 |
greg |
1.8 |
int clock; /* incremented each change -- resettable */ |
261 |
greg |
1.1 |
FVECT p, n; /* point and normal */ |
262 |
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} C_VERTEX; /* vertex context */ |
263 |
greg |
1.3 |
|
264 |
greg |
1.13 |
#define C_DEFMATERIAL {1,0,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\ |
265 |
greg |
1.2 |
0.,C_DEFCOLOR,0.,0.,C_DEFCOLOR,0.} |
266 |
greg |
1.12 |
#define C_DEFVERTEX {1,{0.,0.,0.},{0.,0.,0.}} |
267 |
greg |
1.1 |
|
268 |
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extern C_COLOR *c_ccolor; /* the current color */ |
269 |
greg |
1.12 |
extern char *c_ccname; /* current color name */ |
270 |
greg |
1.1 |
extern C_MATERIAL *c_cmaterial; /* the current material */ |
271 |
greg |
1.12 |
extern char *c_cmname; /* current material name */ |
272 |
greg |
1.1 |
extern C_VERTEX *c_cvertex; /* the current vertex */ |
273 |
greg |
1.12 |
extern char *c_cvname; /* current vertex name */ |
274 |
greg |
1.1 |
|
275 |
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#ifdef NOPROTO |
276 |
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extern int c_hcolor(); /* handle color entity */ |
277 |
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extern int c_hmaterial(); /* handle material entity */ |
278 |
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extern int c_hvertex(); /* handle vertex entity */ |
279 |
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extern void c_clearall(); /* clear context tables */ |
280 |
greg |
1.11 |
extern C_MATERIAL *c_getmaterial(); /* get a named material */ |
281 |
greg |
1.1 |
extern C_VERTEX *c_getvert(); /* get a named vertex */ |
282 |
greg |
1.7 |
extern C_COLOR *c_getcolor(); /* get a named color */ |
283 |
greg |
1.6 |
extern void c_ccvt(); /* fix color representation */ |
284 |
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extern int c_isgrey(); /* check if color is grey */ |
285 |
greg |
1.1 |
#else |
286 |
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extern int c_hcolor(int, char **); /* handle color entity */ |
287 |
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extern int c_hmaterial(int, char **); /* handle material entity */ |
288 |
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extern int c_hvertex(int, char **); /* handle vertex entity */ |
289 |
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extern void c_clearall(void); /* clear context tables */ |
290 |
greg |
1.11 |
extern C_MATERIAL *c_getmaterial(char *); /* get a named material */ |
291 |
greg |
1.1 |
extern C_VERTEX *c_getvert(char *); /* get a named vertex */ |
292 |
greg |
1.7 |
extern C_COLOR *c_getcolor(char *); /* get a named color */ |
293 |
greg |
1.6 |
extern void c_ccvt(C_COLOR *, int); /* fix color representation */ |
294 |
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extern int c_isgrey(C_COLOR *); /* check if color is grey */ |
295 |
greg |
1.1 |
#endif |
296 |
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297 |
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/************************************************************************* |
298 |
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* Definitions for hierarchical object name handler |
299 |
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*/ |
300 |
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301 |
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extern int obj_nnames; /* depth of name hierarchy */ |
302 |
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extern char **obj_name; /* names in hierarchy */ |
303 |
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304 |
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#ifdef NOPROTO |
305 |
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extern int obj_handler(); /* handle an object entity */ |
306 |
greg |
1.2 |
extern void obj_clear(); /* clear object stack */ |
307 |
greg |
1.1 |
#else |
308 |
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extern int obj_handler(int, char **); /* handle an object entity */ |
309 |
greg |
1.2 |
extern void obj_clear(void); /* clear object stack */ |
310 |
greg |
1.1 |
#endif |
311 |
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312 |
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/************************************************************************** |
313 |
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* Definitions for hierarchical transformation handler |
314 |
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*/ |
315 |
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316 |
greg |
1.2 |
typedef FLOAT MAT4[4][4]; |
317 |
greg |
1.1 |
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318 |
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#ifdef BSD |
319 |
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#define copymat4(m4a,m4b) bcopy((char *)m4b,(char *)m4a,sizeof(MAT4)) |
320 |
|
|
#else |
321 |
|
|
#define copymat4(m4a,m4b) (void)memcpy((char *)m4a,(char *)m4b,sizeof(MAT4)) |
322 |
|
|
#endif |
323 |
|
|
|
324 |
|
|
#define MAT4IDENT { {1.,0.,0.,0.}, {0.,1.,0.,0.}, \ |
325 |
|
|
{0.,0.,1.,0.}, {0.,0.,0.,1.} } |
326 |
|
|
|
327 |
|
|
extern MAT4 m4ident; |
328 |
|
|
|
329 |
|
|
#define setident4(m4) copymat4(m4, m4ident) |
330 |
|
|
|
331 |
|
|
/* regular transformation */ |
332 |
|
|
typedef struct { |
333 |
|
|
MAT4 xfm; /* transform matrix */ |
334 |
greg |
1.2 |
FLOAT sca; /* scalefactor */ |
335 |
greg |
1.1 |
} XF; |
336 |
|
|
|
337 |
|
|
#define identxf(xp) (void)(setident4((xp)->xfm),(xp)->sca=1.0) |
338 |
|
|
|
339 |
greg |
1.10 |
#define XF_MAXDIM 8 /* maximum array dimensions */ |
340 |
|
|
|
341 |
|
|
struct xf_array { |
342 |
|
|
MG_FPOS spos; /* starting position on input */ |
343 |
|
|
int ndim; /* number of array dimensions */ |
344 |
|
|
struct { |
345 |
|
|
short i, n; /* current count and maximum */ |
346 |
|
|
char arg[8]; /* string argument value */ |
347 |
|
|
} aarg[XF_MAXDIM]; |
348 |
|
|
}; |
349 |
|
|
|
350 |
greg |
1.1 |
typedef struct xf_spec { |
351 |
greg |
1.10 |
long xid; /* unique transform id */ |
352 |
|
|
short xav0; /* zeroeth argument in xf_argv array */ |
353 |
|
|
short xac; /* transform argument count */ |
354 |
|
|
XF xf; /* cumulative transformation */ |
355 |
|
|
struct xf_array *xarr; /* transformation array pointer */ |
356 |
|
|
struct xf_spec *prev; /* previous transformation context */ |
357 |
|
|
} XF_SPEC; /* followed by argument buffer */ |
358 |
greg |
1.1 |
|
359 |
|
|
extern int xf_argc; /* total # transform args. */ |
360 |
|
|
extern char **xf_argv; /* transform arguments */ |
361 |
|
|
extern XF_SPEC *xf_context; /* current context */ |
362 |
|
|
|
363 |
|
|
/* |
364 |
|
|
* The transformation handler should do most of the work that needs |
365 |
|
|
* doing. Just pass it any xf entities, then use the associated |
366 |
|
|
* functions to transform and translate points, transform vectors |
367 |
|
|
* (without translation), rotate vectors (without scaling) and scale |
368 |
|
|
* values appropriately. |
369 |
|
|
* |
370 |
|
|
* The routines xf_xfmpoint, xf_xfmvect and xf_rotvect take two |
371 |
|
|
* 3-D vectors (which may be identical), transforms the second and |
372 |
|
|
* puts the result into the first. |
373 |
|
|
*/ |
374 |
|
|
|
375 |
|
|
#ifdef NOPROTO |
376 |
|
|
|
377 |
|
|
extern int xf_handler(); /* handle xf entity */ |
378 |
|
|
extern void xf_xfmpoint(); /* transform point */ |
379 |
|
|
extern void xf_xfmvect(); /* transform vector */ |
380 |
|
|
extern void xf_rotvect(); /* rotate vector */ |
381 |
|
|
extern double xf_scale(); /* scale a value */ |
382 |
greg |
1.2 |
extern void xf_clear(); /* clear xf stack */ |
383 |
greg |
1.1 |
|
384 |
|
|
/* The following are support routines you probably won't call directly */ |
385 |
|
|
|
386 |
|
|
extern void multmat4(); /* m4a = m4b X m4c */ |
387 |
|
|
extern void multv3(); /* v3a = v3b X m4 (vectors) */ |
388 |
|
|
extern void multp3(); /* p3a = p3b X m4 (points) */ |
389 |
|
|
extern int xf(); /* interpret transform spec. */ |
390 |
|
|
|
391 |
|
|
#else |
392 |
|
|
|
393 |
greg |
1.2 |
extern int xf_handler(int, char **); /* handle xf entity */ |
394 |
|
|
extern void xf_xfmpoint(FVECT, FVECT); /* transform point */ |
395 |
|
|
extern void xf_xfmvect(FVECT, FVECT); /* transform vector */ |
396 |
|
|
extern void xf_rotvect(FVECT, FVECT); /* rotate vector */ |
397 |
|
|
extern double xf_scale(double); /* scale a value */ |
398 |
|
|
extern void xf_clear(void); /* clear xf stack */ |
399 |
greg |
1.1 |
|
400 |
|
|
/* The following are support routines you probably won't call directly */ |
401 |
|
|
|
402 |
|
|
extern void multmat4(MAT4, MAT4, MAT4); /* m4a = m4b X m4c */ |
403 |
|
|
extern void multv3(FVECT, FVECT, MAT4); /* v3a = v3b X m4 (vectors) */ |
404 |
|
|
extern void multp3(FVECT, FVECT, MAT4); /* p3a = p3b X m4 (points) */ |
405 |
greg |
1.6 |
extern int xf(XF *, int, char **); /* interpret transform spec. */ |
406 |
greg |
1.1 |
|
407 |
|
|
#endif |
408 |
|
|
|
409 |
|
|
/************************************************************************ |
410 |
|
|
* Miscellaneous definitions |
411 |
|
|
*/ |
412 |
|
|
|
413 |
|
|
#ifdef M_PI |
414 |
|
|
#define PI M_PI |
415 |
|
|
#else |
416 |
|
|
#define PI 3.14159265358979323846 |
417 |
|
|
#endif |
418 |
|
|
|
419 |
|
|
#ifdef DCL_ATOF |
420 |
|
|
extern double atof(); |
421 |
|
|
#endif |
422 |
|
|
|
423 |
|
|
#ifndef MEM_PTR |
424 |
|
|
#define MEM_PTR void * |
425 |
|
|
#endif |
426 |
|
|
|
427 |
|
|
extern MEM_PTR malloc(); |
428 |
|
|
extern MEM_PTR calloc(); |
429 |
|
|
extern MEM_PTR realloc(); |
430 |
greg |
1.4 |
extern void free(); |