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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 1.4 by greg, Thu Jun 23 07:48:36 1994 UTC vs.
Revision 1.20 by greg, Thu Apr 13 12:54:23 1995 UTC

# Line 11 | Line 11
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_CXY        3
16 < #define MG_E_CYL        4
17 < #define MG_E_ED         5
18 < #define MG_E_FACE       6
19 < #define MG_E_INCLUDE    7
20 < #define MG_E_IES        8
21 < #define MG_E_MATERIAL   9
22 < #define MG_E_NORMAL     10
23 < #define MG_E_OBJECT     11
24 < #define MG_E_POINT      12
25 < #define MG_E_RD         13
26 < #define MG_E_RING       14
27 < #define MG_E_RS         15
28 < #define MG_E_SPH        16
29 < #define MG_E_TD         17
30 < #define MG_E_TORUS      18
31 < #define MG_E_TS         19
32 < #define MG_E_VERTEX     20
33 < #define MG_E_XF         21
14 > #define MG_E_CCT        2
15 > #define MG_E_CONE       3
16 > #define MG_E_CMIX       4
17 > #define MG_E_CSPEC      5
18 > #define MG_E_CXY        6
19 > #define MG_E_CYL        7
20 > #define MG_E_ED         8
21 > #define MG_E_FACE       9
22 > #define MG_E_INCLUDE    10
23 > #define MG_E_IES        11
24 > #define MG_E_IR         12
25 > #define MG_E_MATERIAL   13
26 > #define MG_E_NORMAL     14
27 > #define MG_E_OBJECT     15
28 > #define MG_E_POINT      16
29 > #define MG_E_PRISM      17
30 > #define MG_E_RD         18
31 > #define MG_E_RING       19
32 > #define MG_E_RS         20
33 > #define MG_E_SIDES      21
34 > #define MG_E_SPH        22
35 > #define MG_E_TD         23
36 > #define MG_E_TORUS      24
37 > #define MG_E_TS         25
38 > #define MG_E_VERTEX     26
39 > #define MG_E_XF         27
40  
41 < #define MG_NENTITIES    22
41 > #define MG_NENTITIES    28
42  
43 < #define MG_NAMELIST     {"#","c","cone","cxy","cyl","ed","f","i","ies",\
44 <        "m","n","o","p","rd","ring","rs","sph","td","torus","ts","v","xf"}
43 > #define MG_NAMELIST     {"#","c","cct","cone","cmix","cspec","cxy","cyl","ed",\
44 >                        "f","i","ies","ir","m","n","o","p","prism","rd",\
45 >                        "ring","rs","sides","sph","td","torus","ts","v","xf"}
46  
47   #define MG_MAXELEN      6
48  
# Line 75 | Line 82 | extern char    *mg_err[MG_NERRS];
82   * To read from standard input, use NULL as the file name.
83   * For additional control over error reporting and file management,
84   * use mg_open, mg_read, mg_parse and mg_close instead of mg_load.
85 + * To pass an entity of your own construction to the parser, use
86 + * the mg_handle function rather than the mg_ehand routines directly.
87 + * (The first argument to mg_handle is the entity #, or -1.)
88   * To free any data structures and clear the parser, use mg_clear.
89 < * If there is an error, mg_load, mg_open, mg_parse, and mg_rewind
90 < * will return an error from the list above.  In addition, mg_load
91 < * will report the error to stderr.  The mg_read routine returns 0
92 < * when the end of file has been reached.
89 > * If there is an error, mg_load, mg_open, mg_parse, mg_handle and
90 > * mg_rewind will return an error from the list above.  In addition,
91 > * mg_load will report the error to stderr.  The mg_read routine
92 > * returns 0 when the end of file has been reached.
93   */
94  
95 < #define MG_MAXLINE      512             /* maximum input line length */
95 > #define MG_MAXLINE      4096            /* maximum input line length */
96   #define MG_MAXARGC      (MG_MAXLINE/4)  /* maximum argument count */
97  
98   typedef struct mg_fctxt {
99 <        char    *fname;                         /* file name */
99 >        char    fname[96];                      /* file name */
100          FILE    *fp;                            /* stream pointer */
101 +        int     fid;                            /* unique file context id */
102          char    inpline[MG_MAXLINE];            /* input line */
103          int     lineno;                         /* line number */
104          struct mg_fctxt *prev;                  /* previous context */
105   } MG_FCTXT;
106  
107 + typedef struct {
108 +        int     fid;                            /* file this position is for */
109 +        int     lineno;                         /* line number in file */
110 +        long    offset;                         /* offset from beginning */
111 + } MG_FPOS;
112 +
113   extern MG_FCTXT *mg_file;               /* current file context */
114  
115   #ifdef NOPROTO
# Line 101 | Line 118 | extern int     mg_load();              /* parse a file */
118   extern int      mg_open();              /* open new input file */
119   extern int      mg_read();              /* read next line */
120   extern int      mg_parse();             /* parse current line */
121 < extern int      mg_rewind();            /* rewind input file */
121 > extern void     mg_fgetpos();           /* get position on input file */
122 > extern int      mg_fgoto();             /* go to position on input file */
123   extern void     mg_close();             /* close input file */
124   extern void     mg_clear();             /* clear parser */
125 < extern int      mg_iterate();
125 > extern int      mg_handle();            /* handle an entity */
126   #else
127   extern void     mg_init(void);          /* fill in mg_ehand array */
128   extern int      mg_load(char *);        /* parse a file */
129   extern int      mg_open(MG_FCTXT *, char *);    /* open new input file */
130   extern int      mg_read(void);          /* read next line */
131   extern int      mg_parse(void);         /* parse current line */
132 < extern int      mg_rewind(void);        /* rewind input file */
132 > extern void     mg_fgetpos(MG_FPOS *);  /* get position on input file */
133 > extern int      mg_fgoto(MG_FPOS *);    /* go to position on input file */
134   extern void     mg_close(void);         /* close input file */
135   extern void     mg_clear(void);         /* clear parser */
136 < extern int      mg_iterate(int, char **, int (*)(void));
136 > extern int      mg_handle(int, int, char **);   /* handle an entity */
137   #endif
138  
139   #ifndef MG_NQCD
# Line 158 | Line 177 | typedef FLOAT  FVECT[3];
177                                  (vr)[1]=(v1)[1]+(f)*(v2)[1], \
178                                  (vr)[2]=(v1)[2]+(f)*(v2)[2])
179  
180 < #define is0vect(v)      (DOT(v,v) < FTINY*FTINY)
180 > #define is0vect(v)      (DOT(v,v) <= FTINY*FTINY)
181  
182   #define round0(x)       if (x <= FTINY && x >= -FTINY) x = 0
183  
# Line 173 | Line 192 | extern double  normalize(FVECT);       /* normalize a vector
192   *      (materials, colors, vectors)
193   */
194  
195 + #define C_CMINWL        380             /* minimum wavelength */
196 + #define C_CMAXWL        780             /* maximum wavelength */
197 + #define C_CNSS          41              /* number of spectral samples */
198 + #define C_CWLI          ((C_CMAXWL-C_CMINWL)/(C_CNSS-1))
199 + #define C_CMAXV         10000           /* nominal maximum sample value */
200 + #define C_CLPWM         (683./C_CMAXV)  /* peak lumens/watt multiplier */
201 +
202 + #define C_CSSPEC        01              /* flag if spectrum is set */
203 + #define C_CDSPEC        02              /* flag if defined w/ spectrum */
204 + #define C_CSXY          04              /* flag if xy is set */
205 + #define C_CDXY          010             /* flag if defined w/ xy */
206 + #define C_CSEFF         020             /* flag if efficacy set */
207 +
208   typedef struct {
209 <        float   cx, cy;         /* XY chromaticity coordinates */
210 < } C_COLOR;              /* color context */
209 >        int     clock;                  /* incremented each change */
210 >        short   flags;                  /* what's been set */
211 >        short   ssamp[C_CNSS];          /* spectral samples, min wl to max */
212 >        long    ssum;                   /* straight sum of spectral values */
213 >        float   cx, cy;                 /* xy chromaticity value */
214 >        float   eff;                    /* efficacy (lumens/watt) */
215 > } C_COLOR;
216  
217 + #define C_DEFCOLOR      { 1, C_CDXY|C_CSXY|C_CSSPEC|C_CSEFF,\
218 +                        {C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
219 +                        C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
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 +                        C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
224 +                        C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV},\
225 +                        (long)C_CNSS*C_CMAXV, 1./3., 1./3., 178.006 }
226 +
227 + #define c_cval(c,l)     ((double)(c)->ssamp[((l)-C_MINWL)/C_CWLI] / (c)->ssum)
228 +
229 + #define C_1SIDEDTHICK   0.005           /* assumed thickness of 1-sided mat. */
230 +
231   typedef struct {
181 –        char    *name;          /* material name */
232          int     clock;          /* incremented each change -- resettable */
233 +        int     sided;          /* 1 if surface is 1-sided, 0 for 2-sided */
234 +        float   nr, ni;         /* index of refraction, real and imaginary */
235          float   rd;             /* diffuse reflectance */
236          C_COLOR rd_c;           /* diffuse reflectance color */
237          float   td;             /* diffuse transmittance */
# Line 195 | Line 247 | typedef struct {
247   } C_MATERIAL;           /* material context */
248  
249   typedef struct {
250 +        int     clock;          /* incremented each change -- resettable */
251          FVECT   p, n;           /* point and normal */
252   } C_VERTEX;             /* vertex context */
253  
254 < #define isgrey(cxy)     ((cxy)->cx > .31 && (cxy)->cx < .35 && \
202 <                        (cxy)->cy > .31 && (cxy)->cy < .35)
203 <
204 < #define C_DEFCOLOR      {.333,.333}
205 < #define C_DEFMATERIAL   {NULL,1,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\
254 > #define C_DEFMATERIAL   {1,0,1.,0.,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\
255                                          0.,C_DEFCOLOR,0.,0.,C_DEFCOLOR,0.}
256 < #define C_DEFVERTEX     {{0.,0.,0.},{0.,0.,0.}}
256 > #define C_DEFVERTEX     {1,{0.,0.,0.},{0.,0.,0.}}
257  
258   extern C_COLOR          *c_ccolor;      /* the current color */
259 + extern char             *c_ccname;      /* current color name */
260   extern C_MATERIAL       *c_cmaterial;   /* the current material */
261 + extern char             *c_cmname;      /* current material name */
262   extern C_VERTEX         *c_cvertex;     /* the current vertex */
263 + extern char             *c_cvname;      /* current vertex name */
264  
265   #ifdef NOPROTO
266   extern int      c_hcolor();                     /* handle color entity */
267   extern int      c_hmaterial();                  /* handle material entity */
268   extern int      c_hvertex();                    /* handle vertex entity */
269   extern void     c_clearall();                   /* clear context tables */
270 + extern C_MATERIAL       *c_getmaterial();       /* get a named material */
271   extern C_VERTEX *c_getvert();                   /* get a named vertex */
272 + extern C_COLOR  *c_getcolor();                  /* get a named color */
273 + extern void     c_ccvt();                       /* fix color representation */
274 + extern int      c_isgrey();                     /* check if color is grey */
275   #else
276   extern int      c_hcolor(int, char **);         /* handle color entity */
277   extern int      c_hmaterial(int, char **);      /* handle material entity */
278   extern int      c_hvertex(int, char **);        /* handle vertex entity */
279   extern void     c_clearall(void);               /* clear context tables */
280 + extern C_MATERIAL       *c_getmaterial(char *); /* get a named material */
281   extern C_VERTEX *c_getvert(char *);             /* get a named vertex */
282 + extern C_COLOR  *c_getcolor(char *);            /* get a named color */
283 + extern void     c_ccvt(C_COLOR *, int);         /* fix color representation */
284 + extern int      c_isgrey(C_COLOR *);            /* check if color is grey */
285   #endif
286  
287   /*************************************************************************
# Line 249 | Line 309 | typedef FLOAT  MAT4[4][4];
309   #define  copymat4(m4a,m4b)      bcopy((char *)m4b,(char *)m4a,sizeof(MAT4))
310   #else
311   #define  copymat4(m4a,m4b)      (void)memcpy((char *)m4a,(char *)m4b,sizeof(MAT4))
252 – extern char  *memcpy();
312   #endif
313  
314   #define  MAT4IDENT              { {1.,0.,0.,0.}, {0.,1.,0.,0.}, \
# Line 261 | Line 320 | extern MAT4  m4ident;
320  
321                                  /* regular transformation */
322   typedef struct {
323 <        MAT4  xfm;                              /* transform matrix */
324 <        FLOAT  sca;                             /* scalefactor */
323 >        MAT4    xfm;                            /* transform matrix */
324 >        FLOAT   sca;                            /* scalefactor */
325   }  XF;
326  
327   #define identxf(xp)             (void)(setident4((xp)->xfm),(xp)->sca=1.0)
328  
329 + #define XF_MAXDIM       8               /* maximum array dimensions */
330 +
331 + struct xf_array {
332 +        MG_FPOS spos;                   /* starting position on input */
333 +        int     ndim;                   /* number of array dimensions */
334 +        struct {
335 +                short   i, n;           /* current count and maximum */
336 +                char    arg[8];         /* string argument value */
337 +        } aarg[XF_MAXDIM];
338 + };
339 +
340   typedef struct xf_spec {
341 <        short   xac;            /* transform argument count */
342 <        short   xav0;           /* zeroeth argument in xf_argv array */
343 <        XF      xf;             /* cumulative transformation */
344 <        struct xf_spec  *prev;  /* previous transformation context */
345 < } XF_SPEC;
341 >        long    xid;                    /* unique transform id */
342 >        short   xav0;                   /* zeroeth argument in xf_argv array */
343 >        short   xac;                    /* transform argument count */
344 >        short   rev;                    /* boolean true if vertices reversed */
345 >        XF      xf;                     /* cumulative transformation */
346 >        struct xf_array *xarr;          /* transformation array pointer */
347 >        struct xf_spec  *prev;          /* previous transformation context */
348 > } XF_SPEC;                      /* followed by argument buffer */
349  
350   extern int      xf_argc;                        /* total # transform args. */
351   extern char     **xf_argv;                      /* transform arguments */
# Line 320 | Line 393 | extern void    xf_clear(void);                 /* clear xf stack */
393   extern void     multmat4(MAT4, MAT4, MAT4);     /* m4a = m4b X m4c */
394   extern void     multv3(FVECT, FVECT, MAT4);     /* v3a = v3b X m4 (vectors) */
395   extern void     multp3(FVECT, FVECT, MAT4);     /* p3a = p3b X m4 (points) */
396 < extern int      xf(XF, int, char **);           /* interpret transform spec. */
396 > extern int      xf(XF *, int, char **);         /* interpret transform spec. */
397  
398   #endif
399  

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