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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 1.1 by greg, Tue Jun 21 14:45:41 1994 UTC vs.
Revision 1.19 by greg, Fri Mar 10 15:16:42 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_MATERIAL   12
25 > #define MG_E_NORMAL     13
26 > #define MG_E_OBJECT     14
27 > #define MG_E_POINT      15
28 > #define MG_E_PRISM      16
29 > #define MG_E_RD         17
30 > #define MG_E_RING       18
31 > #define MG_E_RS         19
32 > #define MG_E_SIDES      20
33 > #define MG_E_SPH        21
34 > #define MG_E_TD         22
35 > #define MG_E_TORUS      23
36 > #define MG_E_TS         24
37 > #define MG_E_VERTEX     25
38 > #define MG_E_XF         26
39  
40 < #define MG_NENTITIES    22
40 > #define MG_NENTITIES    27
41  
42 < #define MG_NAMELIST     {"#","c","cone","cxy","cyl","ed","f","i","ies",\
43 <        "m","n","o","p","rd","ring","rs","sph","td","torus","ts","v","xf"}
42 > #define MG_NAMELIST     {"#","c","cct","cone","cmix","cspec","cxy","cyl","ed",\
43 >                        "f","i","ies","m","n","o","p","prism","rd","ring",\
44 >                        "rs","sides","sph","td","torus","ts","v","xf"}
45  
46   #define MG_MAXELEN      6
47  
# Line 60 | Line 66 | extern int     (*mg_ehand[MG_NENTITIES])(int argc, char **
66   #define MG_EINCL        7               /* error in included file */
67   #define MG_EMEM         8               /* out of memory */
68   #define MG_ESEEK        9               /* file seek error */
69 + #define MG_EBADMAT      10              /* bad material specification */
70  
71 < #define MG_NERRS        10
71 > #define MG_NERRS        11
72  
73   extern char     *mg_err[MG_NERRS];
74  
# Line 74 | Line 81 | extern char    *mg_err[MG_NERRS];
81   * To read from standard input, use NULL as the file name.
82   * For additional control over error reporting and file management,
83   * use mg_open, mg_read, mg_parse and mg_close instead of mg_load.
84 + * To pass an entity of your own construction to the parser, use
85 + * the mg_handle function rather than the mg_ehand routines directly.
86 + * (The first argument to mg_handle is the entity #, or -1.)
87   * To free any data structures and clear the parser, use mg_clear.
88 < * If there is an error, mg_load, mg_open, mg_parse, and mg_rewind
89 < * will return an error from the list above.  In addition, mg_load
90 < * will report the error to stderr.  The mg_read routine returns 0
91 < * when the end of file has been reached.
88 > * If there is an error, mg_load, mg_open, mg_parse, mg_handle and
89 > * mg_rewind will return an error from the list above.  In addition,
90 > * mg_load will report the error to stderr.  The mg_read routine
91 > * returns 0 when the end of file has been reached.
92   */
93  
94 < #define MG_MAXLINE      512             /* maximum input line length */
94 > #define MG_MAXLINE      4096            /* maximum input line length */
95   #define MG_MAXARGC      (MG_MAXLINE/4)  /* maximum argument count */
96  
97   typedef struct mg_fctxt {
98 <        char    *fname;                         /* file name */
98 >        char    fname[96];                      /* file name */
99          FILE    *fp;                            /* stream pointer */
100 +        int     fid;                            /* unique file context id */
101          char    inpline[MG_MAXLINE];            /* input line */
102          int     lineno;                         /* line number */
103          struct mg_fctxt *prev;                  /* previous context */
104   } MG_FCTXT;
105  
106 + typedef struct {
107 +        int     fid;                            /* file this position is for */
108 +        int     lineno;                         /* line number in file */
109 +        long    offset;                         /* offset from beginning */
110 + } MG_FPOS;
111 +
112   extern MG_FCTXT *mg_file;               /* current file context */
113  
114   #ifdef NOPROTO
# Line 100 | Line 117 | extern int     mg_load();              /* parse a file */
117   extern int      mg_open();              /* open new input file */
118   extern int      mg_read();              /* read next line */
119   extern int      mg_parse();             /* parse current line */
120 < extern int      mg_rewind();            /* rewind input file */
120 > extern void     mg_fgetpos();           /* get position on input file */
121 > extern int      mg_fgoto();             /* go to position on input file */
122   extern void     mg_close();             /* close input file */
123   extern void     mg_clear();             /* clear parser */
124 < extern int      mg_iterate();
124 > extern int      mg_handle();            /* handle an entity */
125   #else
126   extern void     mg_init(void);          /* fill in mg_ehand array */
127   extern int      mg_load(char *);        /* parse a file */
128   extern int      mg_open(MG_FCTXT *, char *);    /* open new input file */
129   extern int      mg_read(void);          /* read next line */
130   extern int      mg_parse(void);         /* parse current line */
131 < extern int      mg_rewind(void);        /* rewind input file */
131 > extern void     mg_fgetpos(MG_FPOS *);  /* get position on input file */
132 > extern int      mg_fgoto(MG_FPOS *);    /* go to position on input file */
133   extern void     mg_close(void);         /* close input file */
134   extern void     mg_clear(void);         /* clear parser */
135 < extern int      mg_iterate(int, char **, int (*)(void));
135 > extern int      mg_handle(int, int, char **);   /* handle an entity */
136   #endif
137  
138   #ifndef MG_NQCD
# Line 140 | Line 159 | extern int isflt(char *);              /* non-zero if floating poi
159   *      Definitions for 3-d vector manipulation functions
160   */
161  
162 < typedef double  FVECT[3];
162 > #ifdef  SMLFLT
163 > #define  FLOAT          float
164 > #define  FTINY          (1e-3)
165 > #else
166 > #define  FLOAT          double
167 > #define  FTINY          (1e-6)
168 > #endif
169 > #define  FHUGE          (1e10)
170  
171 + typedef FLOAT  FVECT[3];
172 +
173 + #define  VCOPY(v1,v2)   ((v1)[0]=(v2)[0],(v1)[1]=(v2)[1],(v1)[2]=(v2)[2])
174 + #define  DOT(v1,v2)     ((v1)[0]*(v2)[0]+(v1)[1]*(v2)[1]+(v1)[2]*(v2)[2])
175 + #define  VSUM(vr,v1,v2,f)       ((vr)[0]=(v1)[0]+(f)*(v2)[0], \
176 +                                (vr)[1]=(v1)[1]+(f)*(v2)[1], \
177 +                                (vr)[2]=(v1)[2]+(f)*(v2)[2])
178 +
179 + #define is0vect(v)      (DOT(v,v) <= FTINY*FTINY)
180 +
181 + #define round0(x)       if (x <= FTINY && x >= -FTINY) x = 0
182 +
183   #ifdef NOPROTO
184   extern double   normalize();            /* normalize a vector */
185   #else
# Line 153 | Line 191 | extern double  normalize(FVECT);       /* normalize a vector
191   *      (materials, colors, vectors)
192   */
193  
194 + #define C_CMINWL        380             /* minimum wavelength */
195 + #define C_CMAXWL        780             /* maximum wavelength */
196 + #define C_CNSS          41              /* number of spectral samples */
197 + #define C_CWLI          ((C_CMAXWL-C_CMINWL)/(C_CNSS-1))
198 + #define C_CMAXV         10000           /* nominal maximum sample value */
199 + #define C_CLPWM         (683./C_CMAXV)  /* peak lumens/watt multiplier */
200 +
201 + #define C_CSSPEC        01              /* flag if spectrum is set */
202 + #define C_CDSPEC        02              /* flag if defined w/ spectrum */
203 + #define C_CSXY          04              /* flag if xy is set */
204 + #define C_CDXY          010             /* flag if defined w/ xy */
205 + #define C_CSEFF         020             /* flag if efficacy set */
206 +
207   typedef struct {
208 <        double  cx, cy;         /* XY chromaticity coordinates */
209 < } C_COLOR;              /* color context */
208 >        int     clock;                  /* incremented each change */
209 >        short   flags;                  /* what's been set */
210 >        short   ssamp[C_CNSS];          /* spectral samples, min wl to max */
211 >        long    ssum;                   /* straight sum of spectral values */
212 >        float   cx, cy;                 /* xy chromaticity value */
213 >        float   eff;                    /* efficacy (lumens/watt) */
214 > } C_COLOR;
215  
216 + #define C_DEFCOLOR      { 1, C_CDXY|C_CSXY|C_CSSPEC|C_CSEFF,\
217 +                        {C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
218 +                        C_CMAXV,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 +                        (long)C_CNSS*C_CMAXV, 1./3., 1./3., 178.006 }
225 +
226 + #define c_cval(c,l)     ((double)(c)->ssamp[((l)-C_MINWL)/C_CWLI] / (c)->ssum)
227 +
228   typedef struct {
229 <        double  rd;             /* diffuse reflectance */
229 >        int     clock;          /* incremented each change -- resettable */
230 >        int     sided;          /* 1 if surface is 1-sided, 0 for 2-sided */
231 >        float   rd;             /* diffuse reflectance */
232          C_COLOR rd_c;           /* diffuse reflectance color */
233 <        double  td;             /* diffuse transmittance */
233 >        float   td;             /* diffuse transmittance */
234          C_COLOR td_c;           /* diffuse transmittance color */
235 <        double  ed;             /* diffuse emittance */
235 >        float   ed;             /* diffuse emittance */
236          C_COLOR ed_c;           /* diffuse emittance color */
237 <        double  rs;             /* specular reflectance */
237 >        float   rs;             /* specular reflectance */
238          C_COLOR rs_c;           /* specular reflectance color */
239 <        double  rs_a;           /* specular reflectance roughness */
240 <        double  ts;             /* specular transmittance */
239 >        float   rs_a;           /* specular reflectance roughness */
240 >        float   ts;             /* specular transmittance */
241          C_COLOR ts_c;           /* specular transmittance color */
242 <        double  ts_a;           /* specular transmittance roughness */
242 >        float   ts_a;           /* specular transmittance roughness */
243   } C_MATERIAL;           /* material context */
244  
245   typedef struct {
246 +        int     clock;          /* incremented each change -- resettable */
247          FVECT   p, n;           /* point and normal */
248   } C_VERTEX;             /* vertex context */
249  
250 < #define C_DEFCOLOR      {.333,.333}
251 < #define C_DEFMATERIAL   {0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\
252 <                        0.,C_DEFCOLOR,0.,0.,C_DEFCOLOR,0.}
182 < #define C_DEFVERTEX     {{0.,0.,0.},{0.,0.,0.}}
250 > #define C_DEFMATERIAL   {1,0,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\
251 >                                        0.,C_DEFCOLOR,0.,0.,C_DEFCOLOR,0.}
252 > #define C_DEFVERTEX     {1,{0.,0.,0.},{0.,0.,0.}}
253  
254   extern C_COLOR          *c_ccolor;      /* the current color */
255 + extern char             *c_ccname;      /* current color name */
256   extern C_MATERIAL       *c_cmaterial;   /* the current material */
257 + extern char             *c_cmname;      /* current material name */
258   extern C_VERTEX         *c_cvertex;     /* the current vertex */
259 + extern char             *c_cvname;      /* current vertex name */
260  
261   #ifdef NOPROTO
262   extern int      c_hcolor();                     /* handle color entity */
263   extern int      c_hmaterial();                  /* handle material entity */
264   extern int      c_hvertex();                    /* handle vertex entity */
265   extern void     c_clearall();                   /* clear context tables */
266 + extern C_MATERIAL       *c_getmaterial();       /* get a named material */
267   extern C_VERTEX *c_getvert();                   /* get a named vertex */
268 + extern C_COLOR  *c_getcolor();                  /* get a named color */
269 + extern void     c_ccvt();                       /* fix color representation */
270 + extern int      c_isgrey();                     /* check if color is grey */
271   #else
272   extern int      c_hcolor(int, char **);         /* handle color entity */
273   extern int      c_hmaterial(int, char **);      /* handle material entity */
274   extern int      c_hvertex(int, char **);        /* handle vertex entity */
275   extern void     c_clearall(void);               /* clear context tables */
276 + extern C_MATERIAL       *c_getmaterial(char *); /* get a named material */
277   extern C_VERTEX *c_getvert(char *);             /* get a named vertex */
278 + extern C_COLOR  *c_getcolor(char *);            /* get a named color */
279 + extern void     c_ccvt(C_COLOR *, int);         /* fix color representation */
280 + extern int      c_isgrey(C_COLOR *);            /* check if color is grey */
281   #endif
282  
283   /*************************************************************************
# Line 208 | Line 289 | extern char    **obj_name;             /* names in hierarchy */
289  
290   #ifdef NOPROTO
291   extern int      obj_handler();                  /* handle an object entity */
292 + extern void     obj_clear();                    /* clear object stack */
293   #else
294   extern int      obj_handler(int, char **);      /* handle an object entity */
295 + extern void     obj_clear(void);                /* clear object stack */
296   #endif
297  
298   /**************************************************************************
299   *      Definitions for hierarchical transformation handler
300   */
301  
302 < typedef double  MAT4[4][4];
302 > typedef FLOAT  MAT4[4][4];
303  
304   #ifdef  BSD
305   #define  copymat4(m4a,m4b)      bcopy((char *)m4b,(char *)m4a,sizeof(MAT4))
306   #else
307   #define  copymat4(m4a,m4b)      (void)memcpy((char *)m4a,(char *)m4b,sizeof(MAT4))
225 – extern char  *memcpy();
308   #endif
309  
310   #define  MAT4IDENT              { {1.,0.,0.,0.}, {0.,1.,0.,0.}, \
# Line 234 | Line 316 | extern MAT4  m4ident;
316  
317                                  /* regular transformation */
318   typedef struct {
319 <        MAT4  xfm;                              /* transform matrix */
320 <        double  sca;                            /* scalefactor */
319 >        MAT4    xfm;                            /* transform matrix */
320 >        FLOAT   sca;                            /* scalefactor */
321   }  XF;
322  
323   #define identxf(xp)             (void)(setident4((xp)->xfm),(xp)->sca=1.0)
324  
325 + #define XF_MAXDIM       8               /* maximum array dimensions */
326 +
327 + struct xf_array {
328 +        MG_FPOS spos;                   /* starting position on input */
329 +        int     ndim;                   /* number of array dimensions */
330 +        struct {
331 +                short   i, n;           /* current count and maximum */
332 +                char    arg[8];         /* string argument value */
333 +        } aarg[XF_MAXDIM];
334 + };
335 +
336   typedef struct xf_spec {
337 <        short   xac;            /* transform argument count */
338 <        short   xav0;           /* zeroeth argument in xf_argv array */
339 <        XF      xf;             /* cumulative transformation */
340 <        struct xf_spec  *prev;  /* previous transformation context */
341 < } XF_SPEC;
337 >        long    xid;                    /* unique transform id */
338 >        short   xav0;                   /* zeroeth argument in xf_argv array */
339 >        short   xac;                    /* transform argument count */
340 >        short   rev;                    /* boolean true if vertices reversed */
341 >        XF      xf;                     /* cumulative transformation */
342 >        struct xf_array *xarr;          /* transformation array pointer */
343 >        struct xf_spec  *prev;          /* previous transformation context */
344 > } XF_SPEC;                      /* followed by argument buffer */
345  
346   extern int      xf_argc;                        /* total # transform args. */
347   extern char     **xf_argv;                      /* transform arguments */
# Line 270 | Line 366 | extern void    xf_xfmpoint();          /* transform point */
366   extern void     xf_xfmvect();           /* transform vector */
367   extern void     xf_rotvect();           /* rotate vector */
368   extern double   xf_scale();             /* scale a value */
369 + extern void     xf_clear();             /* clear xf stack */
370  
371   /* The following are support routines you probably won't call directly */
372  
# Line 280 | Line 377 | extern int     xf();                   /* interpret transform spec. */
377  
378   #else
379  
380 < extern int      xf_handler();           /* handle xf entity */
381 < extern void     xf_xfmpoint();          /* transform point */
382 < extern void     xf_xfmvect();           /* transform vector */
383 < extern void     xf_rotvect();           /* rotate vector */
384 < extern double   xf_scale();             /* scale a value */
380 > extern int      xf_handler(int, char **);       /* handle xf entity */
381 > extern void     xf_xfmpoint(FVECT, FVECT);      /* transform point */
382 > extern void     xf_xfmvect(FVECT, FVECT);       /* transform vector */
383 > extern void     xf_rotvect(FVECT, FVECT);       /* rotate vector */
384 > extern double   xf_scale(double);               /* scale a value */
385 > extern void     xf_clear(void);                 /* clear xf stack */
386  
387   /* The following are support routines you probably won't call directly */
388  
389   extern void     multmat4(MAT4, MAT4, MAT4);     /* m4a = m4b X m4c */
390   extern void     multv3(FVECT, FVECT, MAT4);     /* v3a = v3b X m4 (vectors) */
391   extern void     multp3(FVECT, FVECT, MAT4);     /* p3a = p3b X m4 (points) */
392 < extern int      xf(XF, int, char **);           /* interpret transform spec. */
392 > extern int      xf(XF *, int, char **);         /* interpret transform spec. */
393  
394   #endif
395  
# Line 316 | Line 414 | extern double  atof();
414   extern MEM_PTR  malloc();
415   extern MEM_PTR  calloc();
416   extern MEM_PTR  realloc();
417 + extern void     free();

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