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root/radiance/ray/src/cv/mgflib/parser.h
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Comparing ray/src/cv/mgflib/parser.h (file contents):
Revision 1.8 by greg, Sat Jun 25 11:55:42 1994 UTC vs.
Revision 1.29 by greg, Thu Feb 8 16:29:33 1996 UTC

# Line 1 | Line 1
1 < /* Copyright (c) 1994 Regents of the University of California */
1 > /* Copyright (c) 1995 Regents of the University of California */
2  
3   /* SCCSid "$SunId$ LBL" */
4  
# Line 8 | Line 8
8  
9   /* must include stdio.h before us */
10  
11 <                        /* Entities (order doesn't really matter) */
12 < #define MG_E_COMMENT    0
13 < #define MG_E_COLOR      1
14 < #define MG_E_CONE       2
15 < #define MG_E_CMIX       3
16 < #define MG_E_CSPEC      4
17 < #define MG_E_CXY        5
18 < #define MG_E_CYL        6
19 < #define MG_E_ED         7
20 < #define MG_E_FACE       8
21 < #define MG_E_INCLUDE    9
22 < #define MG_E_IES        10
23 < #define MG_E_MATERIAL   11
24 < #define MG_E_NORMAL     12
25 < #define MG_E_OBJECT     13
26 < #define MG_E_POINT      14
27 < #define MG_E_PRISM      15
28 < #define MG_E_RD         16
29 < #define MG_E_RING       17
30 < #define MG_E_RS         18
31 < #define MG_E_SPH        19
32 < #define MG_E_TD         20
33 < #define MG_E_TORUS      21
34 < #define MG_E_TS         22
35 < #define MG_E_VERTEX     23
36 < #define MG_E_XF         24
11 > #define MG_VMAJOR       1               /* major version number */
12 > #define MG_VMINOR       1               /* minor version number */
13  
14 < #define MG_NENTITIES    25
14 >                        /* Entities (list is only appended, never modified) */
15 > #define MG_E_COMMENT    0               /* #            */
16 > #define MG_E_COLOR      1               /* c            */
17 > #define MG_E_CCT        2               /* cct          */
18 > #define MG_E_CONE       3               /* cone         */
19 > #define MG_E_CMIX       4               /* cmix         */
20 > #define MG_E_CSPEC      5               /* cspec        */
21 > #define MG_E_CXY        6               /* cxy          */
22 > #define MG_E_CYL        7               /* cyl          */
23 > #define MG_E_ED         8               /* ed           */
24 > #define MG_E_FACE       9               /* f            */
25 > #define MG_E_INCLUDE    10              /* i            */
26 > #define MG_E_IES        11              /* ies          */
27 > #define MG_E_IR         12              /* ir           */
28 > #define MG_E_MATERIAL   13              /* m            */
29 > #define MG_E_NORMAL     14              /* n            */
30 > #define MG_E_OBJECT     15              /* o            */
31 > #define MG_E_POINT      16              /* p            */
32 > #define MG_E_PRISM      17              /* prism        */
33 > #define MG_E_RD         18              /* rd           */
34 > #define MG_E_RING       19              /* ring         */
35 > #define MG_E_RS         20              /* rs           */
36 > #define MG_E_SIDES      21              /* sides        */
37 > #define MG_E_SPH        22              /* sph          */
38 > #define MG_E_TD         23              /* td           */
39 > #define MG_E_TORUS      24              /* torus        */
40 > #define MG_E_TS         25              /* ts           */
41 > #define MG_E_VERTEX     26              /* v            */
42 > #define MG_E_XF         27              /* xf           */
43 >                        /* end of Version 1 entities */
44  
45 < #define MG_NAMELIST     {"#","c","cone","cmix","cspec","cxy","cyl","ed","f",\
41 <                        "i","ies","m","n","o","p","prism","rd","ring","rs",\
42 <                        "sph","td","torus","ts","v","xf"}
45 > #define MG_NENTITIES    28              /* total # entities */
46  
47 + #define MG_NELIST       {28}            /* entity count for version 1 and up */
48 +
49 + #define MG_NAMELIST     {"#","c","cct","cone","cmix","cspec","cxy","cyl","ed",\
50 +                        "f","i","ies","ir","m","n","o","p","prism","rd",\
51 +                        "ring","rs","sides","sph","td","torus","ts","v","xf"}
52 +
53   #define MG_MAXELEN      6
54  
55   extern char     mg_ename[MG_NENTITIES][MG_MAXELEN];
56  
57 <                        /* Handler routines for each entity */
49 <
57 >                        /* Handler routines for each entity and unknown ones */
58   #ifdef NOPROTO
59   extern int      (*mg_ehand[MG_NENTITIES])();
60 + extern int      (*mg_uhand)();
61 + extern int      mg_defuhand();
62   #else
63   extern int      (*mg_ehand[MG_NENTITIES])(int argc, char **argv);
64 + extern int      (*mg_uhand)(int argc, char **argv);
65 + extern int      mg_defuhand(int, char **);
66   #endif
67  
68 + extern unsigned mg_nunknown;            /* count of unknown entities */
69 +
70                          /* Error codes */
71   #define MG_OK           0               /* normal return value */
72   #define MG_EUNK         1               /* unknown entity */
# Line 65 | Line 79 | extern int     (*mg_ehand[MG_NENTITIES])(int argc, char **
79   #define MG_EMEM         8               /* out of memory */
80   #define MG_ESEEK        9               /* file seek error */
81   #define MG_EBADMAT      10              /* bad material specification */
82 + #define MG_ELINE        11              /* input line too long */
83 + #define MG_ECNTXT       12              /* unmatched context close */
84  
85 < #define MG_NERRS        11
85 > #define MG_NERRS        13
86  
87 < extern char     *mg_err[MG_NERRS];
87 > extern char     *mg_err[MG_NERRS];      /* list of error messages */
88  
89   /*
90   * The general process for running the parser is to fill in the mg_ehand
# Line 79 | Line 95 | extern char    *mg_err[MG_NERRS];
95   * To read from standard input, use NULL as the file name.
96   * For additional control over error reporting and file management,
97   * use mg_open, mg_read, mg_parse and mg_close instead of mg_load.
98 + * To pass an entity of your own construction to the parser, use
99 + * the mg_handle function rather than the mg_ehand routines directly.
100 + * (The first argument to mg_handle is the entity #, or -1.)
101   * To free any data structures and clear the parser, use mg_clear.
102 < * If there is an error, mg_load, mg_open, mg_parse, and mg_rewind
103 < * will return an error from the list above.  In addition, mg_load
104 < * will report the error to stderr.  The mg_read routine returns 0
105 < * when the end of file has been reached.
102 > * If there is an error, mg_load, mg_open, mg_parse, mg_handle and
103 > * mg_fgoto will return an error from the list above.  In addition,
104 > * mg_load will report the error to stderr.  The mg_read routine
105 > * returns 0 when the end of file has been reached.
106   */
107  
108 < #define MG_MAXLINE      512             /* maximum input line length */
108 > #define MG_MAXLINE      4096            /* maximum input line length */
109   #define MG_MAXARGC      (MG_MAXLINE/4)  /* maximum argument count */
110  
111   typedef struct mg_fctxt {
112          char    fname[96];                      /* file name */
113          FILE    *fp;                            /* stream pointer */
114 +        int     fid;                            /* unique file context id */
115          char    inpline[MG_MAXLINE];            /* input line */
116          int     lineno;                         /* line number */
117          struct mg_fctxt *prev;                  /* previous context */
118   } MG_FCTXT;
119  
120 + typedef struct {
121 +        int     fid;                            /* file this position is for */
122 +        int     lineno;                         /* line number in file */
123 +        long    offset;                         /* offset from beginning */
124 + } MG_FPOS;
125 +
126   extern MG_FCTXT *mg_file;               /* current file context */
127  
128   #ifdef NOPROTO
# Line 105 | Line 131 | extern int     mg_load();              /* parse a file */
131   extern int      mg_open();              /* open new input file */
132   extern int      mg_read();              /* read next line */
133   extern int      mg_parse();             /* parse current line */
134 < extern int      mg_rewind();            /* rewind input file */
134 > extern void     mg_fgetpos();           /* get position on input file */
135 > extern int      mg_fgoto();             /* go to position on input file */
136   extern void     mg_close();             /* close input file */
137   extern void     mg_clear();             /* clear parser */
138 < extern int      mg_iterate();
138 > extern int      mg_handle();            /* handle an entity */
139   #else
140   extern void     mg_init(void);          /* fill in mg_ehand array */
141   extern int      mg_load(char *);        /* parse a file */
142   extern int      mg_open(MG_FCTXT *, char *);    /* open new input file */
143   extern int      mg_read(void);          /* read next line */
144   extern int      mg_parse(void);         /* parse current line */
145 < extern int      mg_rewind(void);        /* rewind input file */
145 > extern void     mg_fgetpos(MG_FPOS *);  /* get position on input file */
146 > extern int      mg_fgoto(MG_FPOS *);    /* go to position on input file */
147   extern void     mg_close(void);         /* close input file */
148   extern void     mg_clear(void);         /* clear parser */
149 < extern int      mg_iterate(int, char **, int (*)(void));
149 > extern int      mg_handle(int, int, char **);   /* handle an entity */
150   #endif
151  
152   #ifndef MG_NQCD
# Line 135 | Line 163 | extern int     mg_nqcdivs;             /* divisions per quarter circl
163   extern int mg_entity();                 /* get entity number from its name */
164   extern int isint();                     /* non-zero if integer format */
165   extern int isflt();                     /* non-zero if floating point format */
166 + extern int isname();                    /* non-zero if legal identifier name */
167   #else
168   extern int mg_entity(char *);           /* get entity number from its name */
169   extern int isint(char *);               /* non-zero if integer format */
170   extern int isflt(char *);               /* non-zero if floating point format */
171 + extern int isname(char *);              /* non-zero if legal identifier name */
172   #endif
173  
174   /************************************************************************
# Line 182 | Line 212 | extern double  normalize(FVECT);       /* normalize a vector
212   #define C_CNSS          41              /* number of spectral samples */
213   #define C_CWLI          ((C_CMAXWL-C_CMINWL)/(C_CNSS-1))
214   #define C_CMAXV         10000           /* nominal maximum sample value */
215 + #define C_CLPWM         (683./C_CMAXV)  /* peak lumens/watt multiplier */
216  
217   #define C_CSSPEC        01              /* flag if spectrum is set */
218   #define C_CDSPEC        02              /* flag if defined w/ spectrum */
219   #define C_CSXY          04              /* flag if xy is set */
220   #define C_CDXY          010             /* flag if defined w/ xy */
221 + #define C_CSEFF         020             /* flag if efficacy set */
222  
223   typedef struct {
192 –        char    *name;                  /* material name */
224          int     clock;                  /* incremented each change */
225          short   flags;                  /* what's been set */
226          short   ssamp[C_CNSS];          /* spectral samples, min wl to max */
227          long    ssum;                   /* straight sum of spectral values */
228          float   cx, cy;                 /* xy chromaticity value */
229 +        float   eff;                    /* efficacy (lumens/watt) */
230   } C_COLOR;
231  
232 < #define C_DEFCOLOR      { NULL, 1, C_CDXY|C_CSXY|C_CSSPEC,\
232 > #define C_DEFCOLOR      { 1, C_CDXY|C_CSXY|C_CSSPEC|C_CSEFF,\
233                          {C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
234                          C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
235                          C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
# Line 205 | Line 237 | typedef struct {
237                          C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
238                          C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
239                          C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV},\
240 <                        (long)C_CNSS*C_CMAXV, 1./3., 1./3. }
240 >                        (long)C_CNSS*C_CMAXV, 1./3., 1./3., 178.006 }
241  
242 < #define C_CIEX          { "_cie_x", 1, C_CDSPEC|C_CSSPEC|C_CSXY,\
211 <                        {14,42,143,435,1344,2839,3483,3362,2908,1954,956,\
212 <                        320,49,93,633,1655,2904,4334,5945,7621,9163,10263,\
213 <                        10622,10026,8544,6424,4479,2835,1649,874,468,227,\
214 <                        114,58,29,14,7,3,2,1,0}, 106836L, .735, .265 }
242 > #define c_cval(c,l)     ((double)(c)->ssamp[((l)-C_MINWL)/C_CWLI] / (c)->ssum)
243  
244 < #define C_CIEY          { "_cie_y", 1, C_CDSPEC|C_CSSPEC|C_CSXY,\
217 <                        {0,1,4,12,40,116,230,380,600,910,1390,2080,3230,\
218 <                        5030,7100,8620,9540,9950,9950,9520,8700,7570,6310,\
219 <                        5030,3810,2650,1750,1070,610,320,170,82,41,21,10,\
220 <                        5,2,1,1,0,0}, 106856L, .274, .717 }
244 > #define C_1SIDEDTHICK   0.005           /* assumed thickness of 1-sided mat. */
245  
222 – #define C_CIEZ          { "_cie_z", 1, C_CDSPEC|C_CSSPEC|C_CSXY,\
223 –                        {65,201,679,2074,6456,13856,17471,17721,16692,\
224 –                        12876,8130,4652,2720,1582,782,422,203,87,39,21,17,\
225 –                        11,8,3,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},\
226 –                        106770L, .167, .009 }
227 –
228 – #define c_cval(c,l)     ((double)(c)->ssamp[((l)-C_MINWL)/C_CWLI] / (c)->sum)
229 –
246   typedef struct {
231 –        char    *name;          /* material name */
247          int     clock;          /* incremented each change -- resettable */
248 +        int     sided;          /* 1 if surface is 1-sided, 0 for 2-sided */
249 +        float   nr, ni;         /* index of refraction, real and imaginary */
250          float   rd;             /* diffuse reflectance */
251          C_COLOR rd_c;           /* diffuse reflectance color */
252          float   td;             /* diffuse transmittance */
# Line 245 | Line 262 | typedef struct {
262   } C_MATERIAL;           /* material context */
263  
264   typedef struct {
248 –        char    *name;          /* vector name */
265          int     clock;          /* incremented each change -- resettable */
266          FVECT   p, n;           /* point and normal */
267   } C_VERTEX;             /* vertex context */
268  
269 < #define C_DEFMATERIAL   {NULL,1,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\
269 > #define C_DEFMATERIAL   {1,0,1.,0.,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\
270                                          0.,C_DEFCOLOR,0.,0.,C_DEFCOLOR,0.}
271 < #define C_DEFVERTEX     {NULL,1,{0.,0.,0.},{0.,0.,0.}}
271 > #define C_DEFVERTEX     {1,{0.,0.,0.},{0.,0.,0.}}
272  
273   extern C_COLOR          *c_ccolor;      /* the current color */
274 + extern char             *c_ccname;      /* current color name */
275   extern C_MATERIAL       *c_cmaterial;   /* the current material */
276 + extern char             *c_cmname;      /* current material name */
277   extern C_VERTEX         *c_cvertex;     /* the current vertex */
278 + extern char             *c_cvname;      /* current vertex name */
279  
280   #ifdef NOPROTO
281   extern int      c_hcolor();                     /* handle color entity */
282   extern int      c_hmaterial();                  /* handle material entity */
283   extern int      c_hvertex();                    /* handle vertex entity */
284   extern void     c_clearall();                   /* clear context tables */
285 + extern C_MATERIAL       *c_getmaterial();       /* get a named material */
286   extern C_VERTEX *c_getvert();                   /* get a named vertex */
287   extern C_COLOR  *c_getcolor();                  /* get a named color */
288   extern void     c_ccvt();                       /* fix color representation */
# Line 272 | Line 292 | extern int     c_hcolor(int, char **);         /* handle color en
292   extern int      c_hmaterial(int, char **);      /* handle material entity */
293   extern int      c_hvertex(int, char **);        /* handle vertex entity */
294   extern void     c_clearall(void);               /* clear context tables */
295 + extern C_MATERIAL       *c_getmaterial(char *); /* get a named material */
296   extern C_VERTEX *c_getvert(char *);             /* get a named vertex */
297   extern C_COLOR  *c_getcolor(char *);            /* get a named color */
298   extern void     c_ccvt(C_COLOR *, int);         /* fix color representation */
# Line 314 | Line 335 | extern MAT4  m4ident;
335  
336                                  /* regular transformation */
337   typedef struct {
338 <        MAT4  xfm;                              /* transform matrix */
339 <        FLOAT  sca;                             /* scalefactor */
338 >        MAT4    xfm;                            /* transform matrix */
339 >        FLOAT   sca;                            /* scalefactor */
340   }  XF;
341  
342   #define identxf(xp)             (void)(setident4((xp)->xfm),(xp)->sca=1.0)
343  
344 + #define XF_MAXDIM       8               /* maximum array dimensions */
345 +
346 + struct xf_array {
347 +        MG_FPOS spos;                   /* starting position on input */
348 +        int     ndim;                   /* number of array dimensions */
349 +        struct {
350 +                short   i, n;           /* current count and maximum */
351 +                char    arg[8];         /* string argument value */
352 +        } aarg[XF_MAXDIM];
353 + };
354 +
355   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;
356 >        long    xid;                    /* unique transform id */
357 >        short   xac;                    /* context argument count */
358 >        short   rev;                    /* boolean true if vertices reversed */
359 >        XF      xf;                     /* cumulative transformation */
360 >        struct xf_array *xarr;          /* transformation array pointer */
361 >        struct xf_spec  *prev;          /* previous transformation context */
362 > } XF_SPEC;                      /* followed by argument buffer */
363  
364 < extern int      xf_argc;                        /* total # transform args. */
365 < extern char     **xf_argv;                      /* transform arguments */
332 < 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  
367 + #define xf_ac(xf)       ((xf)==NULL ? 0 : (xf)->xac)
368 + #define xf_av(xf)       (xf_argend - (xf)->xac)
369 +
370 + #define xf_argc         xf_ac(xf_context)
371 + #define xf_argv         xf_av(xf_context)
372 +
373   /*
374   * The transformation handler should do most of the work that needs
375   * doing.  Just pass it any xf entities, then use the associated
# Line 354 | Line 393 | extern void    xf_clear();             /* clear xf stack */
393  
394   /* The following are support routines you probably won't call directly */
395  
396 + XF_SPEC         *new_xf();              /* allocate new transform */
397 + void            free_xf();              /* free a transform */
398 + int             xf_aname();             /* name this instance */
399 + long            comp_xfid();            /* compute unique ID */
400   extern void     multmat4();             /* m4a = m4b X m4c */
401   extern void     multv3();               /* v3a = v3b X m4 (vectors) */
402   extern void     multp3();               /* p3a = p3b X m4 (points) */
# Line 370 | Line 413 | extern void    xf_clear(void);                 /* clear xf stack */
413  
414   /* The following are support routines you probably won't call directly */
415  
416 + XF_SPEC         *new_xf(int, char **);          /* allocate new transform */
417 + void            free_xf(XF_SPEC *);             /* free a transform */
418 + int             xf_aname(struct xf_array *);    /* name this instance */
419 + long            comp_xfid(MAT4);                /* compute unique ID */
420   extern void     multmat4(MAT4, MAT4, MAT4);     /* m4a = m4b X m4c */
421   extern void     multv3(FVECT, FVECT, MAT4);     /* v3a = v3b X m4 (vectors) */
422   extern void     multp3(FVECT, FVECT, MAT4);     /* p3a = p3b X m4 (points) */
# Line 381 | Line 428 | extern int     xf(XF *, int, char **);         /* interpret trans
428   *      Miscellaneous definitions
429   */
430  
431 + #ifndef  PI
432   #ifdef  M_PI
433   #define  PI             M_PI
434   #else
435   #define  PI             3.14159265358979323846
436 + #endif
437   #endif
438  
439   #ifdef DCL_ATOF

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