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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 1.15 by greg, Thu Sep 1 09:17:46 1994 UTC vs.
Revision 1.39 by greg, Fri Jan 14 05:46:12 2011 UTC

# Line 1 | Line 1
1 < /* Copyright (c) 1994 Regents of the University of California */
2 <
3 < /* SCCSid "$SunId$ LBL" */
4 <
1 > /* RCSid: $Id$ */
2   /*
3   * Header file for MGF interpreter
4   */
5 + #ifndef _MGF_PARSER_H_
6 + #define _MGF_PARSER_H_
7  
8 < /* must include stdio.h before us */
8 > /* must include stdio.h and stdlib.h before us */
9  
10 <                        /* 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_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
10 > #include "ccolor.h"
11  
12 < #define MG_NENTITIES    26
12 > #ifdef __cplusplus
13 > extern "C" {
14 > #endif
15  
16 < #define MG_NAMELIST     {"#","c","cone","cmix","cspec","cxy","cyl","ed","f",\
17 <                        "i","ies","m","n","o","p","prism","rd","ring","rs",\
43 <                        "sides","sph","td","torus","ts","v","xf"}
16 > #define MG_VMAJOR       2               /* major version number */
17 > #define MG_VMINOR       0               /* minor version number */
18  
19 +                        /* Entities (list is only appended, never modified) */
20 + #define MG_E_COMMENT    0               /* #            */
21 + #define MG_E_COLOR      1               /* c            */
22 + #define MG_E_CCT        2               /* cct          */
23 + #define MG_E_CONE       3               /* cone         */
24 + #define MG_E_CMIX       4               /* cmix         */
25 + #define MG_E_CSPEC      5               /* cspec        */
26 + #define MG_E_CXY        6               /* cxy          */
27 + #define MG_E_CYL        7               /* cyl          */
28 + #define MG_E_ED         8               /* ed           */
29 + #define MG_E_FACE       9               /* f            */
30 + #define MG_E_INCLUDE    10              /* i            */
31 + #define MG_E_IES        11              /* ies          */
32 + #define MG_E_IR         12              /* ir           */
33 + #define MG_E_MATERIAL   13              /* m            */
34 + #define MG_E_NORMAL     14              /* n            */
35 + #define MG_E_OBJECT     15              /* o            */
36 + #define MG_E_POINT      16              /* p            */
37 + #define MG_E_PRISM      17              /* prism        */
38 + #define MG_E_RD         18              /* rd           */
39 + #define MG_E_RING       19              /* ring         */
40 + #define MG_E_RS         20              /* rs           */
41 + #define MG_E_SIDES      21              /* sides        */
42 + #define MG_E_SPH        22              /* sph          */
43 + #define MG_E_TD         23              /* td           */
44 + #define MG_E_TORUS      24              /* torus        */
45 + #define MG_E_TS         25              /* ts           */
46 + #define MG_E_VERTEX     26              /* v            */
47 + #define MG_E_XF         27              /* xf           */
48 +                        /* end of Version 1 entities */
49 + #define MG_E_FACEH      28              /* fh           */
50 +                        /* end of Version 2 entities */
51 +
52 + #define MG_NENTITIES    29              /* total # entities */
53 +
54 + #define MG_NELIST       {28,29}         /* entity count for version 1 and up */
55 +
56 + #define MG_NAMELIST     {"#","c","cct","cone","cmix","cspec","cxy","cyl","ed",\
57 +                        "f","i","ies","ir","m","n","o","p","prism","rd",\
58 +                        "ring","rs","sides","sph","td","torus","ts","v","xf",\
59 +                        "fh"}
60 +
61   #define MG_MAXELEN      6
62  
63   extern char     mg_ename[MG_NENTITIES][MG_MAXELEN];
64  
65 <                        /* Handler routines for each entity */
50 <
51 < #ifdef NOPROTO
52 < extern int      (*mg_ehand[MG_NENTITIES])();
53 < #else
65 >                        /* Handler routines for each entity and unknown ones */
66   extern int      (*mg_ehand[MG_NENTITIES])(int argc, char **argv);
67 < #endif
67 > extern int      (*mg_uhand)(int argc, char **argv);
68 > extern int      mg_defuhand(int, char **);
69  
70 + extern unsigned mg_nunknown;            /* count of unknown entities */
71 +
72                          /* Error codes */
73   #define MG_OK           0               /* normal return value */
74   #define MG_EUNK         1               /* unknown entity */
# Line 66 | Line 81 | extern int     (*mg_ehand[MG_NENTITIES])(int argc, char **
81   #define MG_EMEM         8               /* out of memory */
82   #define MG_ESEEK        9               /* file seek error */
83   #define MG_EBADMAT      10              /* bad material specification */
84 + #define MG_ELINE        11              /* input line too long */
85 + #define MG_ECNTXT       12              /* unmatched context close */
86  
87 < #define MG_NERRS        11
87 > #define MG_NERRS        13
88  
89 < extern char     *mg_err[MG_NERRS];
89 > extern char     *mg_err[MG_NERRS];      /* list of error messages */
90  
91   /*
92   * The general process for running the parser is to fill in the mg_ehand
# Line 85 | Line 102 | extern char    *mg_err[MG_NERRS];
102   * (The first argument to mg_handle is the entity #, or -1.)
103   * To free any data structures and clear the parser, use mg_clear.
104   * If there is an error, mg_load, mg_open, mg_parse, mg_handle and
105 < * mg_rewind will return an error from the list above.  In addition,
105 > * mg_fgoto will return an error from the list above.  In addition,
106   * mg_load will report the error to stderr.  The mg_read routine
107   * returns 0 when the end of file has been reached.
108   */
109  
110 < #define MG_MAXLINE      512             /* maximum input line length */
110 > #define MG_MAXLINE      4096            /* maximum input line length */
111   #define MG_MAXARGC      (MG_MAXLINE/4)  /* maximum argument count */
112  
113   typedef struct mg_fctxt {
# Line 110 | Line 127 | typedef struct {
127  
128   extern MG_FCTXT *mg_file;               /* current file context */
129  
113 – #ifdef NOPROTO
114 – extern void     mg_init();              /* fill in mg_ehand array */
115 – 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 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_handle();            /* handle an entity */
124 – #else
130   extern void     mg_init(void);          /* fill in mg_ehand array */
131   extern int      mg_load(char *);        /* parse a file */
132   extern int      mg_open(MG_FCTXT *, char *);    /* open new input file */
# Line 132 | Line 137 | extern int     mg_fgoto(MG_FPOS *);    /* go to position on i
137   extern void     mg_close(void);         /* close input file */
138   extern void     mg_clear(void);         /* clear parser */
139   extern int      mg_handle(int, int, char **);   /* handle an entity */
135 – #endif
140  
141   #ifndef MG_NQCD
142   #define MG_NQCD         5               /* default number of divisions */
# Line 144 | Line 148 | extern int     mg_nqcdivs;             /* divisions per quarter circl
148   * The following library routines are included for your convenience:
149   */
150  
147 – #ifdef NOPROTO
148 – extern int mg_entity();                 /* get entity number from its name */
149 – extern int isint();                     /* non-zero if integer format */
150 – extern int isflt();                     /* non-zero if floating point format */
151 – #else
151   extern int mg_entity(char *);           /* get entity number from its name */
152   extern int isint(char *);               /* non-zero if integer format */
153 + extern int isintd(char *, char *);      /* same with delimiter set */
154   extern int isflt(char *);               /* non-zero if floating point format */
155 < #endif
155 > extern int isfltd(char *, char *);      /* same with delimiter set */
156 > extern int isname(char *);              /* non-zero if legal identifier name */
157 > extern int badarg(int, char **, char *);/* check argument format */
158 > extern int e_include(int, char **);     /* expand include entity */
159 > extern int e_pipe(int, char **);        /* expand piped command */
160 > extern int e_sph(int, char **);         /* expand sphere as other entities */
161 > extern int e_torus(int, char **);       /* expand torus as other entities */
162 > extern int e_cyl(int, char **);         /* expand cylinder as other entities */
163 > extern int e_ring(int, char **);        /* expand ring as other entities */
164 > extern int e_cone(int, char **);        /* expand cone as other entities */
165 > extern int e_prism(int, char **);       /* expand prism as other entities */
166 > extern int e_faceh(int, char **);       /* expand face w/ holes as face */
167  
168   /************************************************************************
169   *      Definitions for 3-d vector manipulation functions
170   */
171  
172   #ifdef  SMLFLT
173 < #define  FLOAT          float
173 > #define  RREAL          float
174   #define  FTINY          (1e-3)
175   #else
176 < #define  FLOAT          double
176 > #define  RREAL          double
177   #define  FTINY          (1e-6)
178   #endif
179   #define  FHUGE          (1e10)
180  
181 < typedef FLOAT  FVECT[3];
181 > typedef RREAL  FVECT[3];
182  
183   #define  VCOPY(v1,v2)   ((v1)[0]=(v2)[0],(v1)[1]=(v2)[1],(v1)[2]=(v2)[2])
184   #define  DOT(v1,v2)     ((v1)[0]*(v2)[0]+(v1)[1]*(v2)[1]+(v1)[2]*(v2)[2])
# Line 179 | Line 190 | typedef FLOAT  FVECT[3];
190  
191   #define round0(x)       if (x <= FTINY && x >= -FTINY) x = 0
192  
182 – #ifdef NOPROTO
183 – extern double   normalize();            /* normalize a vector */
184 – #else
193   extern double   normalize(FVECT);       /* normalize a vector */
194 < #endif
194 > extern void     fcross(FVECT,FVECT,FVECT);/* cross product of two vectors */
195  
196   /************************************************************************
197   *      Definitions for context handling routines
198   *      (materials, colors, vectors)
199   */
200  
201 < #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_CWLI          ((C_CMAXWL-C_CMINWL)/(C_CNSS-1))
197 < #define C_CMAXV         10000           /* nominal maximum sample value */
201 > #define C_1SIDEDTHICK   0.005           /* assumed thickness of 1-sided mat. */
202  
199 – #define C_CSSPEC        01              /* flag if spectrum is set */
200 – #define C_CDSPEC        02              /* flag if defined w/ spectrum */
201 – #define C_CSXY          04              /* flag if xy is set */
202 – #define C_CDXY          010             /* flag if defined w/ xy */
203 –
203   typedef struct {
205 –        int     clock;                  /* incremented each change */
206 –        short   flags;                  /* what's been set */
207 –        short   ssamp[C_CNSS];          /* spectral samples, min wl to max */
208 –        long    ssum;                   /* straight sum of spectral values */
209 –        float   cx, cy;                 /* xy chromaticity value */
210 – } C_COLOR;
211 –
212 – #define C_DEFCOLOR      { 1, C_CDXY|C_CSXY|C_CSSPEC,\
213 –                        {C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
214 –                        C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
215 –                        C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,\
216 –                        C_CMAXV,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,\
219 –                        C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV,C_CMAXV},\
220 –                        (long)C_CNSS*C_CMAXV, 1./3., 1./3. }
221 –
222 – #define C_CIEX          { 1, C_CDSPEC|C_CSSPEC|C_CSXY,\
223 –                        {14,42,143,435,1344,2839,3483,3362,2908,1954,956,\
224 –                        320,49,93,633,1655,2904,4334,5945,7621,9163,10263,\
225 –                        10622,10026,8544,6424,4479,2835,1649,874,468,227,\
226 –                        114,58,29,14,7,3,2,1,0}, 106836L, .735, .265 }
227 –
228 – #define C_CIEY          { 1, C_CDSPEC|C_CSSPEC|C_CSXY,\
229 –                        {0,1,4,12,40,116,230,380,600,910,1390,2080,3230,\
230 –                        5030,7100,8620,9540,9950,9950,9520,8700,7570,6310,\
231 –                        5030,3810,2650,1750,1070,610,320,170,82,41,21,10,\
232 –                        5,2,1,1,0,0}, 106856L, .274, .717 }
233 –
234 – #define C_CIEZ          { 1, C_CDSPEC|C_CSSPEC|C_CSXY,\
235 –                        {65,201,679,2074,6456,13856,17471,17721,16692,\
236 –                        12876,8130,4652,2720,1582,782,422,203,87,39,21,17,\
237 –                        11,8,3,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},\
238 –                        106770L, .167, .009 }
239 –
240 – #define c_cval(c,l)     ((double)(c)->ssamp[((l)-C_MINWL)/C_CWLI] / (c)->ssum)
241 –
242 – typedef struct {
204          int     clock;          /* incremented each change -- resettable */
205 +        void    *client_data;   /* pointer to private client-owned data */
206          int     sided;          /* 1 if surface is 1-sided, 0 for 2-sided */
207 +        float   nr, ni;         /* index of refraction, real and imaginary */
208          float   rd;             /* diffuse reflectance */
209          C_COLOR rd_c;           /* diffuse reflectance color */
210          float   td;             /* diffuse transmittance */
# Line 258 | Line 221 | typedef struct {
221  
222   typedef struct {
223          int     clock;          /* incremented each change -- resettable */
224 +        void    *client_data;   /* pointer to private client-owned data */
225          FVECT   p, n;           /* point and normal */
226   } C_VERTEX;             /* vertex context */
227  
228 < #define C_DEFMATERIAL   {1,0,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\
229 <                                        0.,C_DEFCOLOR,0.,0.,C_DEFCOLOR,0.}
230 < #define C_DEFVERTEX     {1,{0.,0.,0.},{0.,0.,0.}}
228 > #define C_DEFMATERIAL   {1,NULL,0,1.,0.,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,\
229 >                                C_DEFCOLOR,0.,C_DEFCOLOR,0.,0.,C_DEFCOLOR,0.}
230 > #define C_DEFVERTEX     {1,NULL,{0.,0.,0.},{0.,0.,0.}}
231  
232   extern C_COLOR          *c_ccolor;      /* the current color */
233   extern char             *c_ccname;      /* current color name */
# Line 272 | Line 236 | extern char            *c_cmname;      /* current material name */
236   extern C_VERTEX         *c_cvertex;     /* the current vertex */
237   extern char             *c_cvname;      /* current vertex name */
238  
275 – #ifdef NOPROTO
276 – extern int      c_hcolor();                     /* handle color entity */
277 – extern int      c_hmaterial();                  /* handle material entity */
278 – extern int      c_hvertex();                    /* handle vertex entity */
279 – extern void     c_clearall();                   /* clear context tables */
280 – extern C_MATERIAL       *c_getmaterial();       /* get a named material */
281 – extern C_VERTEX *c_getvert();                   /* get a named vertex */
282 – extern C_COLOR  *c_getcolor();                  /* get a named color */
283 – extern void     c_ccvt();                       /* fix color representation */
284 – extern int      c_isgrey();                     /* check if color is grey */
285 – #else
239   extern int      c_hcolor(int, char **);         /* handle color entity */
240   extern int      c_hmaterial(int, char **);      /* handle material entity */
241   extern int      c_hvertex(int, char **);        /* handle vertex entity */
# Line 290 | Line 243 | extern void    c_clearall(void);               /* clear context tables
243   extern C_MATERIAL       *c_getmaterial(char *); /* get a named material */
244   extern C_VERTEX *c_getvert(char *);             /* get a named vertex */
245   extern C_COLOR  *c_getcolor(char *);            /* get a named color */
293 – extern void     c_ccvt(C_COLOR *, int);         /* fix color representation */
294 – extern int      c_isgrey(C_COLOR *);            /* check if color is grey */
295 – #endif
246  
247   /*************************************************************************
248   *      Definitions for hierarchical object name handler
# Line 301 | Line 251 | extern int     c_isgrey(C_COLOR *);            /* check if color is
251   extern int      obj_nnames;             /* depth of name hierarchy */
252   extern char     **obj_name;             /* names in hierarchy */
253  
304 – #ifdef NOPROTO
305 – extern int      obj_handler();                  /* handle an object entity */
306 – extern void     obj_clear();                    /* clear object stack */
307 – #else
254   extern int      obj_handler(int, char **);      /* handle an object entity */
255   extern void     obj_clear(void);                /* clear object stack */
310 – #endif
256  
257   /**************************************************************************
258   *      Definitions for hierarchical transformation handler
259   */
260  
261 < typedef FLOAT  MAT4[4][4];
261 > typedef RREAL  MAT4[4][4];
262  
318 – #ifdef  BSD
319 – #define  copymat4(m4a,m4b)      bcopy((char *)m4b,(char *)m4a,sizeof(MAT4))
320 – #else
263   #define  copymat4(m4a,m4b)      (void)memcpy((char *)m4a,(char *)m4b,sizeof(MAT4))
322 – #endif
264  
265   #define  MAT4IDENT              { {1.,0.,0.,0.}, {0.,1.,0.,0.}, \
266                                  {0.,0.,1.,0.}, {0.,0.,0.,1.} }
# Line 331 | Line 272 | extern MAT4  m4ident;
272                                  /* regular transformation */
273   typedef struct {
274          MAT4    xfm;                            /* transform matrix */
275 <        FLOAT   sca;                            /* scalefactor */
275 >        RREAL   sca;                            /* scalefactor */
276   }  XF;
277  
278   #define identxf(xp)             (void)(setident4((xp)->xfm),(xp)->sca=1.0)
# Line 349 | Line 290 | struct xf_array {
290  
291   typedef struct xf_spec {
292          long    xid;                    /* unique transform id */
293 <        short   xav0;                   /* zeroeth argument in xf_argv array */
353 <        short   xac;                    /* transform argument count */
293 >        short   xac;                    /* context argument count */
294          short   rev;                    /* boolean true if vertices reversed */
295          XF      xf;                     /* cumulative transformation */
296          struct xf_array *xarr;          /* transformation array pointer */
297          struct xf_spec  *prev;          /* previous transformation context */
298   } XF_SPEC;                      /* followed by argument buffer */
299  
300 < extern int      xf_argc;                        /* total # transform args. */
301 < extern char     **xf_argv;                      /* transform arguments */
362 < extern XF_SPEC  *xf_context;                    /* current context */
300 > extern XF_SPEC  *xf_context;                    /* current transform context */
301 > extern char     **xf_argend;                    /* last transform argument */
302  
303 + #define xf_ac(xf)       ((xf)==NULL ? 0 : (xf)->xac)
304 + #define xf_av(xf)       (xf_argend - (xf)->xac)
305 +
306 + #define xf_argc         xf_ac(xf_context)
307 + #define xf_argv         xf_av(xf_context)
308 +
309   /*
310   * The transformation handler should do most of the work that needs
311   * doing.  Just pass it any xf entities, then use the associated
# Line 373 | Line 318 | extern XF_SPEC *xf_context;                    /* current context */
318   * puts the result into the first.
319   */
320  
376 – #ifdef NOPROTO
321  
378 – extern int      xf_handler();           /* handle xf entity */
379 – extern void     xf_xfmpoint();          /* transform point */
380 – extern void     xf_xfmvect();           /* transform vector */
381 – extern void     xf_rotvect();           /* rotate vector */
382 – extern double   xf_scale();             /* scale a value */
383 – extern void     xf_clear();             /* clear xf stack */
384 –
385 – /* The following are support routines you probably won't call directly */
386 –
387 – extern void     multmat4();             /* m4a = m4b X m4c */
388 – extern void     multv3();               /* v3a = v3b X m4 (vectors) */
389 – extern void     multp3();               /* p3a = p3b X m4 (points) */
390 – extern int      xf();                   /* interpret transform spec. */
391 –
392 – #else
393 –
322   extern int      xf_handler(int, char **);       /* handle xf entity */
323   extern void     xf_xfmpoint(FVECT, FVECT);      /* transform point */
324   extern void     xf_xfmvect(FVECT, FVECT);       /* transform vector */
# Line 400 | Line 328 | extern void    xf_clear(void);                 /* clear xf stack */
328  
329   /* The following are support routines you probably won't call directly */
330  
331 + XF_SPEC         *new_xf(int, char **);          /* allocate new transform */
332 + void            free_xf(XF_SPEC *);             /* free a transform */
333 + int             xf_aname(struct xf_array *);    /* name this instance */
334 + long            comp_xfid(MAT4);                /* compute unique ID */
335   extern void     multmat4(MAT4, MAT4, MAT4);     /* m4a = m4b X m4c */
336   extern void     multv3(FVECT, FVECT, MAT4);     /* v3a = v3b X m4 (vectors) */
337   extern void     multp3(FVECT, FVECT, MAT4);     /* p3a = p3b X m4 (points) */
338   extern int      xf(XF *, int, char **);         /* interpret transform spec. */
339  
340 < #endif
340 >        /* cvrgb.c */
341 > extern void mgf2rgb(C_COLOR *cin, double intensity, float cout[3]);
342  
343   /************************************************************************
344   *      Miscellaneous definitions
345   */
346  
347 + #ifndef  PI
348   #ifdef  M_PI
349 < #define  PI             M_PI
349 > #define  PI             ((double)M_PI)
350   #else
351   #define  PI             3.14159265358979323846
352   #endif
419 –
420 – #ifdef DCL_ATOF
421 – extern double   atof();
353   #endif
354  
355 < #ifndef MEM_PTR
356 < #define MEM_PTR         void *
355 > #ifdef __cplusplus
356 > }
357   #endif
358 + #endif /* _MGF_PARSER_H_ */
359  
428 – extern MEM_PTR  malloc();
429 – extern MEM_PTR  calloc();
430 – extern MEM_PTR  realloc();
431 – extern void     free();

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