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/* Copyright (c) 1994 Regents of the University of California */ |
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/* Copyright (c) 1995 Regents of the University of California */ |
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/* SCCSid "$SunId$ LBL" */ |
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/* must include stdio.h before us */ |
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/* Entities (order doesn't really matter) */ |
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#define MG_E_COMMENT 0 |
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#define MG_E_COLOR 1 |
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#define MG_E_CCT 2 |
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#define MG_E_CONE 3 |
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#define MG_E_CMIX 4 |
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#define MG_E_CSPEC 5 |
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#define MG_E_CXY 6 |
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#define MG_E_CYL 7 |
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#define MG_E_ED 8 |
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#define MG_E_FACE 9 |
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#define MG_E_INCLUDE 10 |
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#define MG_E_IES 11 |
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#define MG_E_MATERIAL 12 |
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#define MG_E_NORMAL 13 |
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#define MG_E_OBJECT 14 |
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#define MG_E_POINT 15 |
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#define MG_E_PRISM 16 |
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#define MG_E_RD 17 |
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#define MG_E_RING 18 |
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#define MG_E_RS 19 |
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#define MG_E_SIDES 20 |
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#define MG_E_SPH 21 |
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#define MG_E_TD 22 |
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#define MG_E_TORUS 23 |
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#define MG_E_TS 24 |
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#define MG_E_VERTEX 25 |
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#define MG_E_XF 26 |
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#define MG_E_COMMENT 0 /* # */ |
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#define MG_E_COLOR 1 /* c */ |
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#define MG_E_CCT 2 /* cct */ |
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#define MG_E_CONE 3 /* cone */ |
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#define MG_E_CMIX 4 /* cmix */ |
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#define MG_E_CSPEC 5 /* cspec */ |
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#define MG_E_CXY 6 /* cxy */ |
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#define MG_E_CYL 7 /* cyl */ |
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#define MG_E_ED 8 /* ed */ |
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#define MG_E_FACE 9 /* f */ |
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#define MG_E_INCLUDE 10 /* i */ |
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#define MG_E_IES 11 /* ies */ |
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#define MG_E_IR 12 /* ir */ |
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#define MG_E_MATERIAL 13 /* m */ |
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#define MG_E_NORMAL 14 /* n */ |
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#define MG_E_OBJECT 15 /* o */ |
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#define MG_E_POINT 16 /* p */ |
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#define MG_E_PRISM 17 /* prism */ |
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#define MG_E_RD 18 /* rd */ |
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#define MG_E_RING 19 /* ring */ |
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#define MG_E_RS 20 /* rs */ |
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#define MG_E_SIDES 21 /* sides */ |
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#define MG_E_SPH 22 /* sph */ |
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#define MG_E_TD 23 /* td */ |
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#define MG_E_TORUS 24 /* torus */ |
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#define MG_E_TS 25 /* ts */ |
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#define MG_E_VERTEX 26 /* v */ |
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#define MG_E_XF 27 /* xf */ |
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#define MG_NENTITIES 27 |
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#define MG_NENTITIES 28 /* total # entities */ |
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#define MG_NAMELIST {"#","c","cct","cone","cmix","cspec","cxy","cyl","ed",\ |
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"f","i","ies","m","n","o","p","prism","rd","ring",\ |
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"rs","sides","sph","td","torus","ts","v","xf"} |
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"f","i","ies","ir","m","n","o","p","prism","rd",\ |
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"ring","rs","sides","sph","td","torus","ts","v","xf"} |
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#define MG_MAXELEN 6 |
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extern char mg_ename[MG_NENTITIES][MG_MAXELEN]; |
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/* Handler routines for each entity */ |
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/* Handler routines for each entity and unknown ones */ |
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#ifdef NOPROTO |
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extern int (*mg_ehand[MG_NENTITIES])(); |
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extern int (*mg_uhand)(); |
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extern int mg_defuhand(); |
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#else |
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extern int (*mg_ehand[MG_NENTITIES])(int argc, char **argv); |
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extern int (*mg_uhand)(int argc, char **argv); |
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extern int mg_defuhand(int, char **); |
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#endif |
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extern unsigned mg_nunknown; /* count of unknown entities */ |
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/* Error codes */ |
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#define MG_OK 0 /* normal return value */ |
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#define MG_EUNK 1 /* unknown entity */ |
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#define MG_NERRS 11 |
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extern char *mg_err[MG_NERRS]; |
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extern char *mg_err[MG_NERRS]; /* list of error messages */ |
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/* |
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* The general process for running the parser is to fill in the mg_ehand |
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* (The first argument to mg_handle is the entity #, or -1.) |
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* To free any data structures and clear the parser, use mg_clear. |
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* If there is an error, mg_load, mg_open, mg_parse, mg_handle and |
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* mg_rewind will return an error from the list above. In addition, |
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* mg_fgoto will return an error from the list above. In addition, |
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* mg_load will report the error to stderr. The mg_read routine |
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* returns 0 when the end of file has been reached. |
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*/ |
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extern int mg_entity(); /* get entity number from its name */ |
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extern int isint(); /* non-zero if integer format */ |
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extern int isflt(); /* non-zero if floating point format */ |
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extern int isname(); /* non-zero if legal identifier name */ |
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#else |
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extern int mg_entity(char *); /* get entity number from its name */ |
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extern int isint(char *); /* non-zero if integer format */ |
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extern int isflt(char *); /* non-zero if floating point format */ |
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extern int isname(char *); /* non-zero if legal identifier name */ |
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#endif |
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/************************************************************************ |
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#define c_cval(c,l) ((double)(c)->ssamp[((l)-C_MINWL)/C_CWLI] / (c)->ssum) |
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#define C_1SIDEDTHICK 0.005 /* assumed thickness of 1-sided mat. */ |
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typedef struct { |
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int clock; /* incremented each change -- resettable */ |
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int sided; /* 1 if surface is 1-sided, 0 for 2-sided */ |
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float nr, ni; /* index of refraction, real and imaginary */ |
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float rd; /* diffuse reflectance */ |
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C_COLOR rd_c; /* diffuse reflectance color */ |
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float td; /* diffuse transmittance */ |
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FVECT p, n; /* point and normal */ |
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} C_VERTEX; /* vertex context */ |
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#define C_DEFMATERIAL {1,0,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\ |
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#define C_DEFMATERIAL {1,0,1.,0.,0.,C_DEFCOLOR,0.,C_DEFCOLOR,0.,C_DEFCOLOR,\ |
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0.,C_DEFCOLOR,0.,0.,C_DEFCOLOR,0.} |
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#define C_DEFVERTEX {1,{0.,0.,0.},{0.,0.,0.}} |
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typedef struct xf_spec { |
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long xid; /* unique transform id */ |
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short xav0; /* zeroeth argument in xf_argv array */ |
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short xac; /* transform argument count */ |
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short xac; /* context argument count */ |
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short rev; /* boolean true if vertices reversed */ |
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XF xf; /* cumulative transformation */ |
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struct xf_array *xarr; /* transformation array pointer */ |
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struct xf_spec *prev; /* previous transformation context */ |
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} XF_SPEC; /* followed by argument buffer */ |
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extern int xf_argc; /* total # transform args. */ |
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extern char **xf_argv; /* transform arguments */ |
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extern XF_SPEC *xf_context; /* current context */ |
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extern XF_SPEC *xf_context; /* current transform context */ |
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extern char **xf_argend; /* last transform argument */ |
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#define xf_ac(xf) ((xf)->xac) |
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#define xf_av(xf) (xf_argend - (xf)->xac) |
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#define xf_argc (xf_context==NULL ? 0 : xf_ac(xf_context)) |
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#define xf_argv xf_av(xf_context) |
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/* |
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* The transformation handler should do most of the work that needs |
