gov.nasa.worldwind.layers

Class AnnotationLayer

java.lang.Object

gov.nasa.worldwind.avlist.AVListImpl

gov.nasa.worldwind.WWObjectImpl

gov.nasa.worldwind.layers.AbstractLayer

gov.nasa.worldwind.layers.AnnotationLayer

All Implemented Interfaces:

AVList, Disposable, MessageListener, Layer, Restorable, WWObject, PropertyChangeListener, EventListener

public class AnnotationLayer
extends AbstractLayer

The AnnotationLayer class manages a collection of Annotation objects for rendering and picking. AnnotationLayer delegates to its internal AnnotationRenderer for rendering and picking operations. The AnnotationRenderer is specified by calling setAnnotationRenderer(gov.nasa.worldwind.render.AnnotationRenderer).

See Also:

Annotation, AnnotationRenderer

Field Summary

Fields

Modifier and Type	Field and Description
protected Collection<Annotation>	annotations
protected Iterable<Annotation>	annotationsOverride

Constructor Summary

Constructors

Constructor and Description
AnnotationLayer() Creates a new AnnotationLayer with an empty collection of Annotations.

Method Summary

Modifier and Type	Method and Description
void	addAnnotation(Annotation annotation) Adds the specified annotation to this layer's internal collection.
void	addAnnotations(Iterable<Annotation> annotations) Adds the contents of the specified annotations to this layer's internal collection.
protected void	clearAnnotations()
protected void	doPick(DrawContext dc, Point pickPoint)
protected void	doRender(DrawContext dc)
protected Iterable<Annotation>	getActiveAnnotations() Returns the Iterable of currently active Annotations.
AnnotationRenderer	getAnnotationRenderer() Returns the AnnotationRenderer this layer delegates to during picking and rendering.
Iterable<Annotation>	getAnnotations() Returns the Iterable of Annotations currently in use by this layer.
double	getOpacity() Returns the layer's opacity value, which is ignored by this layer because each of its annotations has an attribute with its own opacity control.
void	removeAllAnnotations() Clears the contents of this layer's internal Annotation collection.
void	removeAnnotation(Annotation annotation) Removes the specified annotation from this layer's internal collection, if it exists.
void	setAnnotationRenderer(AnnotationRenderer annotationRenderer) Sets the AnnotationRenderer this layer delegates to during picking and rendering.
void	setAnnotations(Iterable<Annotation> annotationIterable) Overrides the collection of currently active Annotations with the specified annotationIterable.
void	setOpacity(double opacity) Opacity is not applied to layers of this type because each annotation has an attribute set with opacity control.
String	toString()

Methods inherited from class gov.nasa.worldwind.layers.AbstractLayer

createLayerConfigElements, dispose, doPreRender, getDataFileStore, getExpiryTime, getLayerConfigParams, getMaxActiveAltitude, getMaxEffectiveAltitude, getMinActiveAltitude, getMinEffectiveAltitude, getName, getRestorableState, getScale, getScreenCredit, isAtMaxResolution, isEnabled, isLayerActive, isLayerConfigDocument, isLayerInView, isMultiResolution, isNetworkRetrievalEnabled, isPickEnabled, pick, preRender, render, restoreState, setDataFileStore, setEnabled, setExpiryTime, setMaxActiveAltitude, setMinActiveAltitude, setName, setNetworkRetrievalEnabled, setPickEnabled, setScreenCredit

Methods inherited from class gov.nasa.worldwind.WWObjectImpl

onMessage, propertyChange

Methods inherited from class gov.nasa.worldwind.avlist.AVListImpl

addPropertyChangeListener, addPropertyChangeListener, clearList, copy, firePropertyChange, firePropertyChange, getBooleanValue, getBooleanValue, getChangeSupport, getDoubleValue, getDoubleValue, getEntries, getIntegerValue, getIntegerValue, getLongValue, getLongValue, getRestorableStateForAVPair, getStringValue, getStringValue, getStringValue, getValue, getValues, hasKey, removeKey, removePropertyChangeListener, removePropertyChangeListener, setValue, setValues

Methods inherited from class java.lang.Object

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

Methods inherited from interface gov.nasa.worldwind.avlist.AVList

addPropertyChangeListener, addPropertyChangeListener, clearList, copy, firePropertyChange, firePropertyChange, getEntries, getStringValue, getValue, getValues, hasKey, removeKey, removePropertyChangeListener, removePropertyChangeListener, setValue, setValues

Methods inherited from interface java.beans.PropertyChangeListener

propertyChange

Methods inherited from interface gov.nasa.worldwind.event.MessageListener

onMessage

Field Detail

annotations

protected final Collection<Annotation> annotations

annotationsOverride

protected Iterable<Annotation> annotationsOverride

Constructor Detail

AnnotationLayer

public AnnotationLayer()

Creates a new AnnotationLayer with an empty collection of Annotations.

Method Detail

addAnnotation

public void addAnnotation(Annotation annotation)

Adds the specified annotation to this layer's internal collection. If this layer's internal collection has been overriden with a call to setAnnotations(java.lang.Iterable<gov.nasa.worldwind.render.Annotation>), this will throw an exception.

Parameters:

annotation - Annotation to add.

Throws:

IllegalArgumentException - If annotation is null.

IllegalStateException - If a custom Iterable has been specified by a call to setAnnotations.

addAnnotations

public void addAnnotations(Iterable<Annotation> annotations)

Adds the contents of the specified annotations to this layer's internal collection. If this layer's internal collection has been overriden with a call to setAnnotations(java.lang.Iterable<gov.nasa.worldwind.render.Annotation>), this will throw an exception.

Parameters:

annotations - Annotations to add.

Throws:

IllegalArgumentException - If annotations is null.

IllegalStateException - If a custom Iterable has been specified by a call to setAnnotations.

clearAnnotations

protected void clearAnnotations()

doPick

protected void doPick(DrawContext dc,
                      Point pickPoint)

Overrides:

doPick in class AbstractLayer

doRender

protected void doRender(DrawContext dc)

Specified by:

doRender in class AbstractLayer

getActiveAnnotations

protected Iterable<Annotation> getActiveAnnotations()

Returns the Iterable of currently active Annotations. If the caller has specified a custom Iterable via setAnnotations(java.lang.Iterable<gov.nasa.worldwind.render.Annotation>), this will returns a reference to that Iterable. If the caller passed setAnnotations a null parameter, or if setAnnotations has not been called, this returns a view of this layer's internal collection of Annotations.

Returns:

Iterable of currently active Annotations.

getAnnotationRenderer

public AnnotationRenderer getAnnotationRenderer()

Returns the AnnotationRenderer this layer delegates to during picking and rendering.

Returns:

AnnotationRenderer used to pick and render Annotations.

getAnnotations

public Iterable<Annotation> getAnnotations()

Returns the Iterable of Annotations currently in use by this layer. If the caller has specified a custom Iterable via setAnnotations(java.lang.Iterable<gov.nasa.worldwind.render.Annotation>), this will returns a reference to that Iterable. If the caller passed setAnnotations a null parameter, or if setAnnotations has not been called, this returns a view of this layer's internal collection of Annotations.

Returns:

Iterable of currently active Annotations.

getOpacity

public double getOpacity()

Returns the layer's opacity value, which is ignored by this layer because each of its annotations has an attribute with its own opacity control.

Specified by:

getOpacity in interface Layer

Overrides:

getOpacity in class AbstractLayer

Returns:

The layer opacity, a value between 0 and 1.

removeAllAnnotations

public void removeAllAnnotations()

Clears the contents of this layer's internal Annotation collection. If this layer's internal collection has been overriden with a call to setAnnotations(java.lang.Iterable<gov.nasa.worldwind.render.Annotation>), this will throw an exception.

Throws:

IllegalStateException - If a custom Iterable has been specified by a call to setAnnotations.

removeAnnotation

public void removeAnnotation(Annotation annotation)

Removes the specified annotation from this layer's internal collection, if it exists. If this layer's internal collection has been overriden with a call to setAnnotations(java.lang.Iterable<gov.nasa.worldwind.render.Annotation>), this will throw an exception.

Parameters:

annotation - Annotation to remove.

Throws:

IllegalArgumentException - If annotation is null.

IllegalStateException - If a custom Iterable has been specified by a call to setAnnotations.

setAnnotationRenderer

public void setAnnotationRenderer(AnnotationRenderer annotationRenderer)

Sets the AnnotationRenderer this layer delegates to during picking and rendering.

Parameters:

annotationRenderer - AnnotationRenderer used to pick and render Annotations.

Throws:

IllegalArgumentException - If annotationRenderer is null.

setAnnotations

public void setAnnotations(Iterable<Annotation> annotationIterable)

Overrides the collection of currently active Annotations with the specified annotationIterable. This layer will maintain a reference to annotationIterable strictly for picking and rendering. This layer will not modify the Iterable reference. However, this will clear the internal collection of Annotations, and will prevent any modification to its contents via addAnnotation, addAnnotations, or removeAnnotations.

If the specified annotationIterable is null, this layer will revert to maintaining its internal collection.

Parameters:

annotationIterable - Iterable to use instead of this layer's internal collection, or null to use this layer's internal collection.

setOpacity

public void setOpacity(double opacity)

Opacity is not applied to layers of this type because each annotation has an attribute set with opacity control.

Specified by:

setOpacity in interface Layer

Overrides:

setOpacity in class AbstractLayer

Parameters:

opacity - the current opacity value, which is ignored by this layer.

toString

public String toString()

Overrides:

toString in class AbstractLayer