public class SimplePointInAreaLocator extends Object implements PointOnGeometryLocator
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 SimplePointInAreaLocator.
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.
| Constructor and Description |
|---|
SimplePointInAreaLocator(Geometry geom)
Create an instance of a point-in-area locator,
using the provided areal geometry.
|
| Modifier and Type | Method and Description |
|---|---|
static boolean |
containsPointInPolygon(Coordinate p,
Polygon poly)
Determines whether a point lies in a
Polygon. |
static boolean |
isContained(Coordinate p,
Geometry geom)
Determines whether a point is contained in a
Geometry,
or lies on its boundary. |
int |
locate(Coordinate p)
|
static int |
locate(Coordinate p,
Geometry geom)
|
static int |
locatePointInPolygon(Coordinate p,
Polygon poly)
|
public SimplePointInAreaLocator(Geometry geom)
geom - the areal geometry to locate inpublic static int locate(Coordinate p, Geometry geom)
Location of a point in an areal Geometry.
The return value is one of:
Location.INTERIOR if the point is in the geometry interior
Location.BOUNDARY if the point lies exactly on the boundary
Location.EXTERIOR if the point is outside the geometry
p - the point to testgeom - the areal geometry to testpublic static boolean isContained(Coordinate p, Geometry geom)
Geometry,
or lies on its boundary.
This is a convenience method for
Location.EXTERIOR != locate(p, geom)
p - the point to testgeom - the geometry to testpublic static int locatePointInPolygon(Coordinate p, Polygon poly)
Location of a point in a Polygon.
The return value is one of:
Location.INTERIOR if the point is in the geometry interior
Location.BOUNDARY if the point lies exactly on the boundary
Location.EXTERIOR if the point is outside the geometry
locate(Coordinate, Geometry) instead.p - the point to testpoly - the geometry to testpublic static boolean containsPointInPolygon(Coordinate p, Polygon poly)
Polygon.
If the point lies on the polygon boundary it is
considered to be inside.p - the point to testpoly - the geometry to testpublic int locate(Coordinate p)
Location of a point in an areal Geometry.
The return value is one of:
Location.INTERIOR if the point is in the geometry interior
Location.BOUNDARY if the point lies exactly on the boundary
Location.EXTERIOR if the point is outside the geometry
locate in interface PointOnGeometryLocatorp - the point to testCopyright © 2024. All rights reserved.