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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 1.5 by greg, Fri Jun 24 09:32:55 1994 UTC vs.
Revision 1.16 by greg, Fri Sep 2 16:04:16 1994 UTC

# Line 13 | Line 13
13   #define MG_E_COLOR      1
14   #define MG_E_CONE       2
15   #define MG_E_CMIX       3
16 < #define MG_E_CXY        4
17 < #define MG_E_CSPEC      5
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
# Line 28 | Line 28
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
31 > #define MG_E_SIDES      19
32 > #define MG_E_SPH        20
33 > #define MG_E_TD         21
34 > #define MG_E_TORUS      22
35 > #define MG_E_TS         23
36 > #define MG_E_VERTEX     24
37 > #define MG_E_XF         25
38  
39 < #define MG_NENTITIES    25
39 > #define MG_NENTITIES    26
40  
41   #define MG_NAMELIST     {"#","c","cone","cmix","cspec","cxy","cyl","ed","f",\
42                          "i","ies","m","n","o","p","prism","rd","ring","rs",\
43 <                        "sph","td","torus","ts","v","xf"}
43 >                        "sides","sph","td","torus","ts","v","xf"}
44  
45   #define MG_MAXELEN      6
46  
# Line 79 | Line 80 | extern char    *mg_err[MG_NERRS];
80   * To read from standard input, use NULL as the file name.
81   * For additional control over error reporting and file management,
82   * use mg_open, mg_read, mg_parse and mg_close instead of mg_load.
83 + * To pass an entity of your own construction to the parser, use
84 + * the mg_handle function rather than the mg_ehand routines directly.
85 + * (The first argument to mg_handle is the entity #, or -1.)
86   * To free any data structures and clear the parser, use mg_clear.
87 < * If there is an error, mg_load, mg_open, mg_parse, and mg_rewind
88 < * will return an error from the list above.  In addition, mg_load
89 < * will report the error to stderr.  The mg_read routine returns 0
90 < * when the end of file has been reached.
87 > * If there is an error, mg_load, mg_open, mg_parse, mg_handle and
88 > * mg_rewind will return an error from the list above.  In addition,
89 > * mg_load will report the error to stderr.  The mg_read routine
90 > * returns 0 when the end of file has been reached.
91   */
92  
93   #define MG_MAXLINE      512             /* maximum input line length */
94   #define MG_MAXARGC      (MG_MAXLINE/4)  /* maximum argument count */
95  
96   typedef struct mg_fctxt {
97 <        char    *fname;                         /* file name */
97 >        char    fname[96];                      /* file name */
98          FILE    *fp;                            /* stream pointer */
99 +        int     fid;                            /* unique file context id */
100          char    inpline[MG_MAXLINE];            /* input line */
101          int     lineno;                         /* line number */
102          struct mg_fctxt *prev;                  /* previous context */
103   } MG_FCTXT;
104  
105 + typedef struct {
106 +        int     fid;                            /* file this position is for */
107 +        int     lineno;                         /* line number in file */
108 +        long    offset;                         /* offset from beginning */
109 + } MG_FPOS;
110 +
111   extern MG_FCTXT *mg_file;               /* current file context */
112  
113   #ifdef NOPROTO
# Line 105 | Line 116 | extern int     mg_load();              /* parse a file */
116   extern int      mg_open();              /* open new input file */
117   extern int      mg_read();              /* read next line */
118   extern int      mg_parse();             /* parse current line */
119 < extern int      mg_rewind();            /* rewind input file */
119 > extern void     mg_fgetpos();           /* get position on input file */
120 > extern int      mg_fgoto();             /* go to position on input file */
121   extern void     mg_close();             /* close input file */
122   extern void     mg_clear();             /* clear parser */
123 < extern int      mg_iterate();
123 > extern int      mg_handle();            /* handle an entity */
124   #else
125   extern void     mg_init(void);          /* fill in mg_ehand array */
126   extern int      mg_load(char *);        /* parse a file */
127   extern int      mg_open(MG_FCTXT *, char *);    /* open new input file */
128   extern int      mg_read(void);          /* read next line */
129   extern int      mg_parse(void);         /* parse current line */
130 < extern int      mg_rewind(void);        /* rewind input file */
130 > extern void     mg_fgetpos(MG_FPOS *);  /* get position on input file */
131 > extern int      mg_fgoto(MG_FPOS *);    /* go to position on input file */
132   extern void     mg_close(void);         /* close input file */
133   extern void     mg_clear(void);         /* clear parser */
134 < extern int      mg_iterate(int, char **, int (*)(void));
134 > extern int      mg_handle(int, int, char **);   /* handle an entity */
135   #endif
136  
137   #ifndef MG_NQCD
# Line 162 | Line 175 | typedef FLOAT  FVECT[3];
175                                  (vr)[1]=(v1)[1]+(f)*(v2)[1], \
176                                  (vr)[2]=(v1)[2]+(f)*(v2)[2])
177  
178 < #define is0vect(v)      (DOT(v,v) < FTINY*FTINY)
178 > #define is0vect(v)      (DOT(v,v) <= FTINY*FTINY)
179  
180   #define round0(x)       if (x <= FTINY && x >= -FTINY) x = 0
181  
# Line 177 | Line 190 | extern double  normalize(FVECT);       /* normalize a vector
190   *      (materials, colors, vectors)
191   */
192  
180 – /* The following structure will change when we add spectral data support */
181 – typedef struct {
182 –        float   cx, cy;         /* XY chromaticity coordinates */
183 – } C_COLOR;              /* color context */
184 –
185 – #ifdef later
186 –
187 – #define C_CMAXWL        780             /* maximum wavelength */
193   #define C_CMINWL        380             /* minimum wavelength */
194 + #define C_CMAXWL        780             /* maximum wavelength */
195   #define C_CNSS          41              /* number of spectral samples */
196 < #define C_WLINC         ((C_MAXWL-C_MINWL)/(C_NSS-1))   /* 10 nm increment */
196 > #define C_CWLI          ((C_CMAXWL-C_CMINWL)/(C_CNSS-1))
197   #define C_CMAXV         10000           /* nominal maximum sample value */
198 + #define C_CLPWM         (683./C_CMAXV)  /* peak lumens/watt multiplier */
199  
200 < #define C_CXY           1               /* flag if has xy chromaticity */
201 < #define C_CSPEC         2               /* flag if has spectrum */
200 > #define C_CSSPEC        01              /* flag if spectrum is set */
201 > #define C_CDSPEC        02              /* flag if defined w/ spectrum */
202 > #define C_CSXY          04              /* flag if xy is set */
203 > #define C_CDXY          010             /* flag if defined w/ xy */
204 > #define C_CSEFF         020             /* flag if efficacy set */
205  
206   typedef struct {
207 +        int     clock;                  /* incremented each change */
208          short   flags;                  /* what's been set */
198 –        float   cx, cy;                 /* xy chromaticity value */
209          short   ssamp[C_CNSS];          /* spectral samples, min wl to max */
210          long    ssum;                   /* straight sum of spectral values */
211 +        float   cx, cy;                 /* xy chromaticity value */
212 +        float   eff;                    /* efficacy (lumens/watt) */
213   } C_COLOR;
214  
215 < #define C_DEFCOLOR      { C_CXY|C_CSPEC, 1./3., 1./3.,
215 > #define C_DEFCOLOR      { 1, C_CDXY|C_CSXY|C_CSSPEC|C_CSEFF,\
216                          {C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
217                          C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
218                          C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
# Line 208 | Line 220 | typedef struct {
220                          C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
221                          C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
222                          C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV},\
223 <                        (long)C_CNSS*C_MAXV }
223 >                        (long)C_CNSS*C_CMAXV, 1./3., 1./3., 178.006 }
224  
225 < #define C_CIEX          { C_CXY|C_CSPEC, ???, ???,
225 > #define C_CIEX          { 1, C_CDSPEC|C_CSSPEC|C_CSXY|C_CSEFF,\
226                          {14,42,143,435,1344,2839,3483,3362,2908,1954,956,\
227                          320,49,93,633,1655,2904,4334,5945,7621,9163,10263,\
228                          10622,10026,8544,6424,4479,2835,1649,874,468,227,\
229 <                        114,58,29,14,7,3,2,1,0}, 106836L }
229 >                        114,58,29,14,7,3,2,1,0}, 106836L, .735, .265, 362.230 }
230  
231 < #define C_CIEY          { C_CXY|C_CSPEC, ???, ???,
231 > #define C_CIEY          { 1, C_CDSPEC|C_CSSPEC|C_CSXY|C_CSEFF,\
232                          {0,1,4,12,40,116,230,380,600,910,1390,2080,3230,\
233                          5030,7100,8620,9540,9950,9950,9520,8700,7570,6310,\
234                          5030,3810,2650,1750,1070,610,320,170,82,41,21,10,\
235 <                        5,2,1,1,0,0}, 106856L }
235 >                        5,2,1,1,0,0}, 106856L, .274, .717, 493.525 }
236  
237 < #define C_CIEZ          { C_CXY|C_CSPEC, ???, ???,
237 > #define C_CIEZ          { 1, C_CDSPEC|C_CSSPEC|C_CSXY|C_CSEFF,\
238                          {65,201,679,2074,6456,13856,17471,17721,16692,\
239                          12876,8130,4652,2720,1582,782,422,203,87,39,21,17,\
240 <                        11,8,3,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}, 106770L }
240 >                        11,8,3,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},\
241 >                        106770L, .167, .009, 54.363 }
242  
243 < #define c_cval(c,l)     ((double)(c)->ssamp[((l)-C_MINWL)/C_WLINC] / (c)->sum)
243 > #define c_cval(c,l)     ((double)(c)->ssamp[((l)-C_MINWL)/C_CWLI] / (c)->ssum)
244  
232 – #endif
233 –
245   typedef struct {
235 –        char    *name;          /* material name */
246          int     clock;          /* incremented each change -- resettable */
247 +        int     sided;          /* 1 if surface is 1-sided, 0 for 2-sided */
248          float   rd;             /* diffuse reflectance */
249          C_COLOR rd_c;           /* diffuse reflectance color */
250          float   td;             /* diffuse transmittance */
# Line 249 | Line 260 | typedef struct {
260   } C_MATERIAL;           /* material context */
261  
262   typedef struct {
263 +        int     clock;          /* incremented each change -- resettable */
264          FVECT   p, n;           /* point and normal */
265   } C_VERTEX;             /* vertex context */
266  
267 < #define isgrey(cxy)     ((cxy)->cx > .32 && (cxy)->cx < .34 && \
256 <                        (cxy)->cy > .32 && (cxy)->cy < .34)
257 <
258 < #define C_DEFCOLOR      {.333,.333}
259 < #define C_DEFMATERIAL   {NULL,1,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\
267 > #define C_DEFMATERIAL   {1,0,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\
268                                          0.,C_DEFCOLOR,0.,0.,C_DEFCOLOR,0.}
269 < #define C_DEFVERTEX     {{0.,0.,0.},{0.,0.,0.}}
269 > #define C_DEFVERTEX     {1,{0.,0.,0.},{0.,0.,0.}}
270  
271   extern C_COLOR          *c_ccolor;      /* the current color */
272 + extern char             *c_ccname;      /* current color name */
273   extern C_MATERIAL       *c_cmaterial;   /* the current material */
274 + extern char             *c_cmname;      /* current material name */
275   extern C_VERTEX         *c_cvertex;     /* the current vertex */
276 + extern char             *c_cvname;      /* current vertex name */
277  
278   #ifdef NOPROTO
279   extern int      c_hcolor();                     /* handle color entity */
280   extern int      c_hmaterial();                  /* handle material entity */
281   extern int      c_hvertex();                    /* handle vertex entity */
282   extern void     c_clearall();                   /* clear context tables */
283 + extern C_MATERIAL       *c_getmaterial();       /* get a named material */
284   extern C_VERTEX *c_getvert();                   /* get a named vertex */
285 + extern C_COLOR  *c_getcolor();                  /* get a named color */
286 + extern void     c_ccvt();                       /* fix color representation */
287 + extern int      c_isgrey();                     /* check if color is grey */
288   #else
289   extern int      c_hcolor(int, char **);         /* handle color entity */
290   extern int      c_hmaterial(int, char **);      /* handle material entity */
291   extern int      c_hvertex(int, char **);        /* handle vertex entity */
292   extern void     c_clearall(void);               /* clear context tables */
293 + extern C_MATERIAL       *c_getmaterial(char *); /* get a named material */
294   extern C_VERTEX *c_getvert(char *);             /* get a named vertex */
295 + extern C_COLOR  *c_getcolor(char *);            /* get a named color */
296 + extern void     c_ccvt(C_COLOR *, int);         /* fix color representation */
297 + extern int      c_isgrey(C_COLOR *);            /* check if color is grey */
298   #endif
299  
300   /*************************************************************************
# Line 303 | Line 322 | typedef FLOAT  MAT4[4][4];
322   #define  copymat4(m4a,m4b)      bcopy((char *)m4b,(char *)m4a,sizeof(MAT4))
323   #else
324   #define  copymat4(m4a,m4b)      (void)memcpy((char *)m4a,(char *)m4b,sizeof(MAT4))
306 – extern char  *memcpy();
325   #endif
326  
327   #define  MAT4IDENT              { {1.,0.,0.,0.}, {0.,1.,0.,0.}, \
# Line 315 | Line 333 | extern MAT4  m4ident;
333  
334                                  /* regular transformation */
335   typedef struct {
336 <        MAT4  xfm;                              /* transform matrix */
337 <        FLOAT  sca;                             /* scalefactor */
336 >        MAT4    xfm;                            /* transform matrix */
337 >        FLOAT   sca;                            /* scalefactor */
338   }  XF;
339  
340   #define identxf(xp)             (void)(setident4((xp)->xfm),(xp)->sca=1.0)
341  
342 + #define XF_MAXDIM       8               /* maximum array dimensions */
343 +
344 + struct xf_array {
345 +        MG_FPOS spos;                   /* starting position on input */
346 +        int     ndim;                   /* number of array dimensions */
347 +        struct {
348 +                short   i, n;           /* current count and maximum */
349 +                char    arg[8];         /* string argument value */
350 +        } aarg[XF_MAXDIM];
351 + };
352 +
353   typedef struct xf_spec {
354 <        short   xac;            /* transform argument count */
355 <        short   xav0;           /* zeroeth argument in xf_argv array */
356 <        XF      xf;             /* cumulative transformation */
357 <        struct xf_spec  *prev;  /* previous transformation context */
358 < } XF_SPEC;
354 >        long    xid;                    /* unique transform id */
355 >        short   xav0;                   /* zeroeth argument in xf_argv array */
356 >        short   xac;                    /* transform argument count */
357 >        short   rev;                    /* boolean true if vertices reversed */
358 >        XF      xf;                     /* cumulative transformation */
359 >        struct xf_array *xarr;          /* transformation array pointer */
360 >        struct xf_spec  *prev;          /* previous transformation context */
361 > } XF_SPEC;                      /* followed by argument buffer */
362  
363   extern int      xf_argc;                        /* total # transform args. */
364   extern char     **xf_argv;                      /* transform arguments */
# Line 374 | Line 406 | extern void    xf_clear(void);                 /* clear xf stack */
406   extern void     multmat4(MAT4, MAT4, MAT4);     /* m4a = m4b X m4c */
407   extern void     multv3(FVECT, FVECT, MAT4);     /* v3a = v3b X m4 (vectors) */
408   extern void     multp3(FVECT, FVECT, MAT4);     /* p3a = p3b X m4 (points) */
409 < extern int      xf(XF, int, char **);           /* interpret transform spec. */
409 > extern int      xf(XF *, int, char **);         /* interpret transform spec. */
410  
411   #endif
412  

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