mirror of
https://git.osgeo.org/gitea/postgis/postgis
synced 2024-10-25 09:32:46 +00:00
47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
/*****************************************************************
|
|
* MEMORY MANAGEMENT
|
|
****************************************************************/
|
|
void *lwalloc(size_t size);
|
|
void *lwrealloc(void *mem, size_t size);
|
|
void lwfree(void *mem);
|
|
|
|
/*****************************************************************
|
|
* POINT
|
|
****************************************************************/
|
|
|
|
typedef struct { double x; double y; } POINT2D;
|
|
typedef struct { double x; double y; double m; } POINT3DM;
|
|
typedef struct { double x; double y; double z; } POINT3DZ;
|
|
typedef struct { double x; double y; double z; double m; } POINT4D;
|
|
|
|
/*****************************************************************
|
|
* POINTARRAY
|
|
****************************************************************/
|
|
|
|
typedef struct POINTARRAY_T *POINTARRAY;
|
|
|
|
// Constructs a POINTARRAY copying given 2d points
|
|
POINTARRAY ptarray_construct2d(unsigned int npoints, const POINT2D *pts);
|
|
|
|
/*****************************************************************
|
|
* LWGEOM
|
|
****************************************************************/
|
|
|
|
typedef struct LWGEOM_T *LWGEOM;
|
|
|
|
// Conversions
|
|
extern char *lwgeom_to_wkt(LWGEOM lwgeom);
|
|
extern char *lwgeom_to_hexwkb(LWGEOM lwgeom, unsigned int byteorder);
|
|
|
|
// Construction
|
|
extern LWGEOM make_lwpoint2d(int SRID, double x, double y);
|
|
extern LWGEOM make_lwpoint3dz(int SRID, double x, double y, double z);
|
|
extern LWGEOM make_lwpoint3dm(int SRID, double x, double y, double m);
|
|
extern LWGEOM make_lwpoint4d(int SRID, double x, double y, double z, double m);
|
|
extern LWGEOM make_lwline(int SRID, unsigned int npoints, LWGEOM *points);
|
|
|
|
// Spatial functions
|
|
extern void lwgeom_reverse(LWGEOM lwgeom);
|
|
extern void lwgeom_forceRHR(LWGEOM lwgeom);
|
|
extern LWGEOM lwgeom_segmentize2d(LWGEOM lwgeom, double dist);
|