PostGIS  2.5.7dev-r@@SVN_REVISION@@

◆ lwpoint_get_x()

double lwpoint_get_x ( const LWPOINT *  point)

Definition at line 63 of file lwpoint.c.

64 {
65  POINT4D pt;
66  if ( lwpoint_is_empty(point) )
67  {
68  lwerror("lwpoint_get_x called with empty geometry");
69  return 0;
70  }
71  getPoint4d_p(point->point, 0, &pt);
72  return pt.x;
73 }
getPoint4d_p
int getPoint4d_p(const POINTARRAY *pa, uint32_t n, POINT4D *point)
Definition: lwgeom_api.c:123
lwerror
void lwerror(const char *fmt,...)
Write a notice out to the error handler.
Definition: lwutil.c:190
lwpoint_is_empty
int lwpoint_is_empty(const LWPOINT *point)
Definition: lwpoint.c:291
LWPOINT::point
POINTARRAY * point
Definition: liblwgeom.h:414
POINT4D::x
double x
Definition: liblwgeom.h:355

References getPoint4d_p(), lwerror(), lwpoint_is_empty(), LWPOINT::point, and POINT4D::x.

Referenced by BOX2D_construct(), geography_centroid(), geography_centroid_from_mpoly(), geometry_to_point(), lwgeom_azumith_spheroid(), lwgeom_project_spheroid(), and lwline_covers_lwpoint().

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