Package com.luciad.geometries.observable

Class ObservablePolygonUtil

java.lang.Object

com.luciad.geometries.observable.ObservablePolygonUtil

public final class ObservablePolygonUtil
extends Object

This class provides utility methods for Observable instance for Polygon.

Since:

2024.1

Method Summary

Modifier and Type	Method	Description
static Observable<@Nullable Geometry>	deriveExteriorPolylineRing(Observable<@Nullable Polygon> observablePolygon)	Derives an Observable from the given observable polygon that represents the exterior ring of the polygon.
static Observable<@Nullable Geometry>	deriveInteriorPolylineRing(Observable<@Nullable Polygon> observablePolygon, long index)	Derives an Observable from the given observable polygon that represents an interior ring of the polygon.

Methods inherited from class java.lang.Object

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

Method Details

deriveExteriorPolylineRing

@NotNull
public static Observable<@Nullable Geometry> deriveExteriorPolylineRing(@NotNull
 Observable<@Nullable Polygon> observablePolygon)

Derives an Observable from the given observable polygon that represents the exterior ring of the polygon.

This observable geometry will be updated when the given observable exterior polyline ring changes.

Notes:

• When the observable polygon contains a null value, the returned observable instance will contain a null value too.
• Observable#setValue will throw an exception for derived instances.

Parameters:

observablePolygon - an observable polygon from which to derive the exterior polyline ring

Returns:

a derived Observable

deriveInteriorPolylineRing

@NotNull
public static Observable<@Nullable Geometry> deriveInteriorPolylineRing(@NotNull
 Observable<@Nullable Polygon> observablePolygon,
 long index)

Derives an Observable from the given observable polygon that represents an interior ring of the polygon.

This observable geometry will be updated when the given observable interior polyline ring changes.

Notes:

• When the observable polygon contains a null value, the returned observable instance will contain a null value too.
• Observable#setValue will throw an exception for derived instances.

Parameters:

observablePolygon - an observable polygon from which to derive the interior polyline ring

index - the index of the interior ring

Returns:

a derived Observable