Logo Search packages:      
Sourcecode: r-cran-mapdata version File versions  Download package

map.h

#ifndef PI
#define PI        3.1415926535897932384626433832795028841971693993751
#endif
#define PI2       (2*PI)

#define SPHERE0         0       /* backwards compatibility */
#define SPHERE          2     /* line data is on the sphere */
#define PLANE           1     /* line data is on the plane */
#define EOR       "EOR" /* end of record indicator */
#define MIN(a,b)  (a)<(b)?(a):(b)
#define MAX(a,b)  (a)>(b)?(a):(b)
#define ABS(x)          ((x)<0?-(x):(x))
#define RAD2DEG(x)      ((x)*180/PI)
#define DEG2RAD(x)      ((x)*PI/180)
#define XMIN            0
#define XMAX            1
#define YMIN            2
#define YMAX            3

/* Defines to handle generation of internal names for C and Fortran
 * on many machines, these symbols are have a leading underscore
 * but on some, particularly System V, they do not
 */
#ifdef __STDC__
#define SYMBOL(x) QUOTE(_##x)
#define FSYMBOL(x)      QUOTE(_##x##_)
#define QUOTE(x)  #x
#else
#define SYMBOL(x) QUOTE(_/**/x)
#define FSYMBOL(x)      QUOTE(_/**/x/**/_)
#define QUOTE(x)  "x"
#endif

typedef unsigned Offset;      /* offset in a disk file */
typedef unsigned short Pair;  /* points in a polyline */
typedef unsigned char Line;   /* polylines in a region */
typedef unsigned short Region;      /* all regions */
typedef int Polyline;         /* all polylines (signed) */

/* stucture for hash tables */
00041 typedef struct s_x_h {
      char *name;
      int index;
      struct s_x_h *next;
} x_h;

00047 struct pair {
      float x;
      float y;
};

00052 struct line_h {
      Offset offset;
      Pair npair;
      Region left, right;
      struct pair sw, ne;
};

00059 struct region_h {
      Offset offset;
      Line nline;
      struct pair sw, ne;
};

Generated by  Doxygen 1.6.0   Back to index