GEOS
3.9.0dev

Functions for locating points within basic geometric structures such as lines and rings. More...
#include <PointLocation.h>
Static Public Member Functions  
static bool  isOnLine (const geom::Coordinate &p, const geom::CoordinateSequence *line) 
Tests whether a point lies on the line defined by a CoordinateSequence. More...  
static bool  isInRing (const geom::Coordinate &p, const std::vector< const geom::Coordinate * > &ring) 
Tests whether a point lies inside or on a ring. More...  
static bool  isInRing (const geom::Coordinate &p, const geom::CoordinateSequence *ring) 
static geom::Location  locateInRing (const geom::Coordinate &p, const std::vector< const geom::Coordinate * > &ring) 
Determines whether a point lies in the interior, on the boundary, or in the exterior of a ring. The ring may be oriented in either direction. More...  
static geom::Location  locateInRing (const geom::Coordinate &p, const geom::CoordinateSequence &ring) 
Functions for locating points within basic geometric structures such as lines and rings.

static 
Tests whether a point lies inside or on a ring.
The ring may be oriented in either direction. A point lying exactly on the ring boundary is considered to be inside the ring.
This method does not first check the point against the envelope of the ring.
p  point to check for ring inclusion 
ring  an array of coordinates representing the ring (which must have first point identical to last point) 
true
if p is inside ring

static 
Tests whether a point lies on the line defined by a CoordinateSequence.
p  the point to test 
line  the line coordinates 

static 
Determines whether a point lies in the interior, on the boundary, or in the exterior of a ring. The ring may be oriented in either direction.
This method does not first check the point against the envelope of the ring.
p  point to check for ring inclusion 
ring  an array of coordinates representing the ring (which must have first point identical to last point) 