GEOS
3.8.0dev

Computes the location of points relative to a polygonal Geometry, using a simple O(n)
algorithm.
More...
#include <SimplePointInAreaLocator.h>
Public Member Functions  
SimplePointInAreaLocator (const geom::Geometry *p_g)  
geom::Location  locate (const geom::Coordinate *p) override 
Static Public Member Functions  
static geom::Location  locate (const geom::Coordinate &p, const geom::Geometry *geom) 
static geom::Location  locatePointInPolygon (const geom::Coordinate &p, const geom::Polygon *poly) 
Determines the Location of a point in a Polygon. More...  
static bool  isContained (const geom::Coordinate &p, const geom::Geometry *geom) 
Determines whether a point is contained in a Geometry, or lies on its boundary. More...  
Computes the location of points relative to a polygonal Geometry, using a simple O(n)
algorithm.
The algorithm used reports if a point lies in the interior, exterior, or exactly on the boundary of the Geometry.
Instance methods are provided to implement the interface PointInAreaLocator
. However, they provide no performance advantage over the class methods.
This algorithm is suitable for use in cases where only a few points will be tested. If many points will be tested, IndexedPointInAreaLocator may provide better performance.

static 
Determines whether a point is contained in a Geometry, or lies on its boundary.
This is a convenience method for
Location::EXTERIOR != locate(p, geom)
p  the point to test 
geom  the geometry to test 

inlineoverridevirtual 
Determines the Location of a point in an areal Geometry.
p  the point to test 
Implements geos::algorithm::locate::PointOnGeometryLocator.

static 
Determines the Location of a point in a Polygon.
The return value is one of:
Computes Location::BOUNDARY
if the point lies exactly on the polygon boundary.
p  the point to test 
poly  the geometry to test 