org.locationtech.jts.io.geojson

Class OrientationTransformer

java.lang.Object

org.locationtech.jts.io.geojson.OrientationTransformer

public class OrientationTransformer
extends Object

Utilities to modify the ring orientation of polygonal geometries.

Constructor Summary

Constructors

Constructor and Description
OrientationTransformer()

Method Summary

Modifier and Type	Method and Description
static org.locationtech.jts.geom.Geometry	transformCCW(org.locationtech.jts.geom.Geometry geometry) Transforms a geometry using the Right Hand Rule specifications defined in the latest GeoJSON specification.
static org.locationtech.jts.geom.LinearRing	transformCCW(org.locationtech.jts.geom.LinearRing ring, boolean isExteriorRing) Transforms a polygon using the Right Hand Rule specifications defined in the latest GeoJSON specification.
static org.locationtech.jts.geom.Polygon	transformCCW(org.locationtech.jts.geom.Polygon polygon) Transforms a polygon using the Right Hand Rule specifications defined in the latest GeoJSON specification.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OrientationTransformer

public OrientationTransformer()

Method Detail

transformCCW

public static org.locationtech.jts.geom.Geometry transformCCW(org.locationtech.jts.geom.Geometry geometry)

Transforms a geometry using the Right Hand Rule specifications defined in the latest GeoJSON specification. See RFC-7946 Specification for more context.

Parameters:

geometry - to be transformed

Returns:

Geometry under the Right Hand Rule specifications

transformCCW

public static org.locationtech.jts.geom.Polygon transformCCW(org.locationtech.jts.geom.Polygon polygon)

Transforms a polygon using the Right Hand Rule specifications defined in the latest GeoJSON specification. See RFC-7946 Specification for more context.

Parameters:

polygon - to be transformed

Returns:

Polygon under the Right Hand Rule specifications

transformCCW

public static org.locationtech.jts.geom.LinearRing transformCCW(org.locationtech.jts.geom.LinearRing ring,
                                                                boolean isExteriorRing)

Transforms a polygon using the Right Hand Rule specifications defined in the latest GeoJSON specification. A linear ring MUST follow the right-hand rule with respect to the area it bounds, i.e., exterior rings are counterclockwise, and holes are clockwise. See RFC 7946 Specification for more context.

Parameters:

ring - the LinearRing, a constraint specific to Polygons

isExteriorRing - true if the LinearRing is the exterior polygon ring, the one that defines the boundary

Returns:

LinearRing under the Right Hand Rule specifications