src/meta/mgvars.h

/* RCSid: $Id$ */
/*
 *  mgvars.h - header file for graphing routines using variables.
 *
 *     6/23/86
 *
 *     Greg Ward Larson
 */

/*
 *  Data arrays are used to store point data.
 */

typedef struct {
        int  size;              /* the size of the array */
        float  *data;           /* pointer to the array */
}  DARRAY;

/*
 *  Intermediate variables are not referenced
 *  directly by the program, but may be used
 *  for defining other variables.
 */

typedef struct ivar {
        char  *name;            /* the variable name */
        char  *dfn;             /* its definition */
        struct ivar  *next;     /* next in list */
}  IVAR;                /* an intermediate variable */

/*
 *  Variables are used for all graph parameters.  The four variable
 *  types are:  REAL, FUNCTION, STRING and DATA.
 *  Of these, only STRING and DATA must be interpreted by us; an
 *  expression parser will handle the rest.
 */
                                /* standard variables */
#define  FTHICK         0               /* frame thickness */
#define  GRID           1               /* grid on? */
#define  LEGEND         2               /* legend title */
#define  OTHICK         3               /* origin thickness */
#define  PERIOD         4               /* period of polar plot */
#define  SUBTITLE       5               /* subtitle */
#define  SYMFILE        6               /* symbol file */
#define  TSTYLE         7               /* tick mark style */
#define  TITLE          8               /* title */
#define  XLABEL         9               /* x axis label */
#define  XMAP           10              /* x axis mapping */
#define  XMAX           11              /* x axis maximum */
#define  XMIN           12              /* x axis minimum */
#define  XSTEP          13              /* x axis step */
#define  YLABEL         14              /* y axis label */
#define  YMAP           15              /* y axis mapping */
#define  YMAX           16              /* y axis maximum */
#define  YMIN           17              /* y axis minimum */
#define  YSTEP          18              /* y axis step */

#define  NVARS          19      /* number of standard variables */

                                /* curve variables */
#define  C              0               /* the curve function */
#define  CCOLOR         1               /* the curve color */
#define  CDATA          2               /* the curve data */
#define  CLABEL         3               /* the curve label */
#define  CLINTYPE       4               /* the curve line type */
#define  CNPOINTS       5               /* number of curve points to plot */
#define  CSYMSIZE       6               /* the curve symbol size */
#define  CSYMTYPE       7               /* the curve symbol type */
#define  CTHICK         8               /* the curve line thickness */

#define  NCVARS         9       /* number of curve variables */

#define  MAXCUR         8       /* maximum number of curves */

                                /* types */
#define  REAL           1               /* floating point */
#define  STRING         2               /* character array */
#define  FUNCTION       3               /* function definition */
#define  DATA           4               /* a set of real points */

                                /* flags */
#define  DEFINED        01              /*  variable is defined */

typedef struct {
        char  *name;            /* the variable name */
        short  type;            /* the variable type */
        char  *descrip;         /* brief description */
        unsigned short  flags;  /* DEFINED, etc. */
        union {
                char  *s;               /* STRING value */
                DARRAY  d;              /* DATA value */
                char  *dfn;             /* variable definition */
        } v;                    /* value */
}  VARIABLE;            /* a variable */

extern IVAR  *ivhead;                           /* the intermediate list */

extern VARIABLE  gparam[NVARS];                 /* the graph variables */
extern VARIABLE  cparam[MAXCUR][NCVARS];        /* the curve variables */

extern VARIABLE  *vlookup();

extern double  varvalue(), funvalue();

extern int  errno;

#define  mgclear(vname)         undefine(vlookup(vname))
Revision:	1.1
Committed:	Sat Feb 22 02:07:26 2003 UTC (21 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R5
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	User	Rev	Content
1	greg	1.1	/* RCSid: $Id$ */
2			/*
3			* mgvars.h - header file for graphing routines using variables.
4			*
5			* 6/23/86
6			*
7			* Greg Ward Larson
8			*/
9
10			/*
11			* Data arrays are used to store point data.
12			*/
13
14			typedef struct {
15			int size; /* the size of the array */
16			float data; / pointer to the array */
17			} DARRAY;
18
19			/*
20			* Intermediate variables are not referenced
21			* directly by the program, but may be used
22			* for defining other variables.
23			*/
24
25			typedef struct ivar {
26			char name; / the variable name */
27			char dfn; / its definition */
28			struct ivar next; / next in list */
29			} IVAR; /* an intermediate variable */
30
31			/*
32			* Variables are used for all graph parameters. The four variable
33			* types are: REAL, FUNCTION, STRING and DATA.
34			* Of these, only STRING and DATA must be interpreted by us; an
35			* expression parser will handle the rest.
36			*/
37			/* standard variables */
38			#define FTHICK 0 /* frame thickness */
39			#define GRID 1 /* grid on? */
40			#define LEGEND 2 /* legend title */
41			#define OTHICK 3 /* origin thickness */
42			#define PERIOD 4 /* period of polar plot */
43			#define SUBTITLE 5 /* subtitle */
44			#define SYMFILE 6 /* symbol file */
45			#define TSTYLE 7 /* tick mark style */
46			#define TITLE 8 /* title */
47			#define XLABEL 9 /* x axis label */
48			#define XMAP 10 /* x axis mapping */
49			#define XMAX 11 /* x axis maximum */
50			#define XMIN 12 /* x axis minimum */
51			#define XSTEP 13 /* x axis step */
52			#define YLABEL 14 /* y axis label */
53			#define YMAP 15 /* y axis mapping */
54			#define YMAX 16 /* y axis maximum */
55			#define YMIN 17 /* y axis minimum */
56			#define YSTEP 18 /* y axis step */
57
58			#define NVARS 19 /* number of standard variables */
59
60			/* curve variables */
61			#define C 0 /* the curve function */
62			#define CCOLOR 1 /* the curve color */
63			#define CDATA 2 /* the curve data */
64			#define CLABEL 3 /* the curve label */
65			#define CLINTYPE 4 /* the curve line type */
66			#define CNPOINTS 5 /* number of curve points to plot */
67			#define CSYMSIZE 6 /* the curve symbol size */
68			#define CSYMTYPE 7 /* the curve symbol type */
69			#define CTHICK 8 /* the curve line thickness */
70
71			#define NCVARS 9 /* number of curve variables */
72
73			#define MAXCUR 8 /* maximum number of curves */
74
75			/* types */
76			#define REAL 1 /* floating point */
77			#define STRING 2 /* character array */
78			#define FUNCTION 3 /* function definition */
79			#define DATA 4 /* a set of real points */
80
81			/* flags */
82			#define DEFINED 01 /* variable is defined */
83
84			typedef struct {
85			char name; / the variable name */
86			short type; /* the variable type */
87			char descrip; / brief description */
88			unsigned short flags; /* DEFINED, etc. */
89			union {
90			char s; / STRING value */
91			DARRAY d; /* DATA value */
92			char dfn; / variable definition */
93			} v; /* value */
94			} VARIABLE; /* a variable */
95
96			extern IVAR ivhead; / the intermediate list */
97
98			extern VARIABLE gparam[NVARS]; /* the graph variables */
99			extern VARIABLE cparam[MAXCUR][NCVARS]; /* the curve variables */
100
101			extern VARIABLE *vlookup();
102
103			extern double varvalue(), funvalue();
104
105			extern int errno;
106
107			#define mgclear(vname) undefine(vlookup(vname))