| 8 |
|
|
| 9 |
|
/* must include stdio.h before us */ |
| 10 |
|
|
| 11 |
< |
/* Entities (order doesn't really matter) */ |
| 11 |
> |
#define MG_VMAJOR 1 /* major version number */ |
| 12 |
> |
#define MG_VMINOR 1 /* minor version number */ |
| 13 |
> |
|
| 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 */ |
| 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_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"} |
| 54 |
|
|
| 55 |
|
extern char mg_ename[MG_NENTITIES][MG_MAXELEN]; |
| 56 |
|
|
| 57 |
< |
/* Handler routines for each entity */ |
| 52 |
< |
|
| 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 */ |
| 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 |
| 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 |
|
/************************************************************************ |
| 354 |
|
|
| 355 |
|
typedef struct xf_spec { |
| 356 |
|
long xid; /* unique transform id */ |
| 357 |
< |
short xav0; /* zeroeth argument in xf_argv array */ |
| 343 |
< |
short xac; /* transform argument count */ |
| 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 */ |
| 352 |
< |
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 |
| 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) */ |
| 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) */ |
| 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 |
