gov.nasa.worldwind.render

Class GlobeAnnotation

java.lang.Object

gov.nasa.worldwind.avlist.AVListImpl

gov.nasa.worldwind.render.AbstractAnnotation

gov.nasa.worldwind.render.GlobeAnnotation

All Implemented Interfaces:

AVList, Disposable, Draggable, Locatable, Movable, Annotation, Renderable, Restorable

Direct Known Subclasses:

DialogAnnotation, MeasureTool.ControlPoint, SARAnnotation, WWOMeasureToolControlPoints.ControlPoint

public class GlobeAnnotation
extends AbstractAnnotation
implements Locatable, Movable, Draggable

Represent a text label attached to a Position on the globe and its rendering attributes.

See Also:

AbstractAnnotation, AnnotationAttributes

Nested Class Summary

Nested classes/interfaces inherited from class gov.nasa.worldwind.render.AbstractAnnotation

AbstractAnnotation.TextCacheKey

Field Summary

Fields

Modifier and Type	Field and Description
protected Integer	altitudeMode
protected boolean	dragEnabled
protected DraggableSupport	draggableSupport
protected double	heightInMeter
protected Position	position

Fields inherited from class gov.nasa.worldwind.render.AbstractAnnotation

alwaysOnTop, attributes, childList, delegateOwner, layoutManager, maxActiveAltitude, minActiveAltitude, pickEnabled, pickSupport, text, textBoundsMap, vertexBuffer, wrappedTextMap

Fields inherited from interface gov.nasa.worldwind.render.Annotation

ANTIALIAS_DONT_CARE, ANTIALIAS_FASTEST, ANTIALIAS_NICEST

Constructor Summary

Constructors

Constructor and Description
GlobeAnnotation(String text, Position position) Creates a GlobeAnnotation with the given text, at the given globe Position.
GlobeAnnotation(String text, Position position, AnnotationAttributes defaults) Creates a GlobeAnnotation with the given text, at the given globe Position.
GlobeAnnotation(String text, Position position, Font font) Creates a GlobeAnnotation with the given text, at the given globe Position.
GlobeAnnotation(String text, Position position, Font font, Color textColor) Creates a GlobeAnnotation with the given text, at the given globe Position.

Method Summary

Modifier and Type	Method and Description
protected Rectangle	computeBounds(DrawContext dc)
protected double[]	computeDistanceScaleAndOpacity(DrawContext dc, Vec4 point, Dimension size)
protected Double	computeLookAtDistance(DrawContext dc)
protected void	doDrag(DragContext dragContext)
protected void	doRenderNow(DrawContext dc)
void	drag(DragContext dragContext) Drag the object given the provided DragContext.
Integer	getAltitudeMode() Get the annotation's altitude mode.
Vec4	getAnnotationDrawPoint(DrawContext dc) Get the final Vec4 point at which an annotation will be drawn.
protected Vec4	getAnnotationDrawPointLegacy(DrawContext dc) Compute the draw point using the legacy altitude mode.
double	getHeightInMeter() Returns the real world height of the annotation frame in meter.
Position	getPosition()
Position	getReferencePosition() A position associated with the object that indicates its aggregate geographic position.
String	getRestorableState() Returns an XML state document String describing the public attributes of this GlobeAnnotation.
boolean	isDragEnabled() Indicates whether the object is enabled for dragging.
void	move(Position position) Shift the shape over the globe's surface while maintaining its original azimuth, its orientation relative to North.
void	moveTo(Position position) Move the shape over the globe's surface while maintaining its original azimuth, its orientation relative to North.
void	restoreState(String stateInXml) Restores publicly settable attribute values found in the specified XML state document String.
void	setAltitudeMode(Integer altitudeMode) Set the annotation's altitude mode.
protected void	setDepthFunc(DrawContext dc, Vec4 screenPoint)
void	setDragEnabled(boolean enabled) Controls whether the object is enabled for dragging.
void	setHeightInMeter(double meters) Set the real world height of the annotation frame in meter.
void	setPosition(Position position)

Methods inherited from class gov.nasa.worldwind.render.AbstractAnnotation

addChild, adjustSizeToChildren, adjustSizeToText, applyBackgroundTextureState, applyColor, applyScreenTransform, beginDraw, beginDrawChildren, bindPickableObject, computeBoundingRectangle, computeFreeBounds, computeInsetBounds, computeOpacity, computeScale, computeTextBounds, dispose, doDraw, doDrawBackgroundTexture, doDrawChildren, draw, drawBackground, drawBackgroundImage, drawBorder, drawCallout, drawChildren, drawContent, drawHTML, drawPlainText, drawText, drawText, drawTopLevelAnnotation, endDraw, endDrawChildren, getAttributes, getBounds, getChildren, getDelegateOwner, getLayout, getMaxActiveAltitude, getMinActiveAltitude, getMultiLineTextRenderer, getPickSupport, getPreferredSize, getText, getTextBounds, getTextRenderer, getWrappedText, glPointFromAWTPoint, isAlwaysOnTop, isPickEnabled, modulateColorOpacity, pick, removeAllChildren, removeChild, render, renderNow, setAlwaysOnTop, setAttributes, setDelegateOwner, setLayout, setMaxActiveAltitude, setMinActiveAltitude, setPickEnabled, setPickSupport, setText, transformBackgroundImageCoordsToAnnotationCoords, transformByModelview, transformImageCoordsToBackgroundImageCoords, wrapText

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, toString, wait, wait, wait

Field Detail

altitudeMode

protected Integer altitudeMode

dragEnabled

protected boolean dragEnabled

draggableSupport

protected DraggableSupport draggableSupport

heightInMeter

protected double heightInMeter

position

protected Position position

Constructor Detail

GlobeAnnotation

public GlobeAnnotation(String text,
                       Position position)

Creates a GlobeAnnotation with the given text, at the given globe Position.

Parameters:

text - the annotation text.

position - the annotation Position.

GlobeAnnotation

public GlobeAnnotation(String text,
                       Position position,
                       AnnotationAttributes defaults)

Creates a GlobeAnnotation with the given text, at the given globe Position. Specify the default AnnotationAttributes set.

Parameters:

text - the annotation text.

position - the annotation Position.

defaults - the default AnnotationAttributes set.

GlobeAnnotation

public GlobeAnnotation(String text,
                       Position position,
                       Font font)

Creates a GlobeAnnotation with the given text, at the given globe Position. Specify the Font to be used.

Parameters:

text - the annotation text.

position - the annotation Position.

font - the Font to use.

GlobeAnnotation

public GlobeAnnotation(String text,
                       Position position,
                       Font font,
                       Color textColor)

Creates a GlobeAnnotation with the given text, at the given globe Position. Specify the Font and text Color to be used.

Parameters:

text - the annotation text.

position - the annotation Position.

font - the Font to use.

textColor - the text Color.

Method Detail

computeBounds

protected Rectangle computeBounds(DrawContext dc)

Specified by:

computeBounds in class AbstractAnnotation

computeDistanceScaleAndOpacity

protected double[] computeDistanceScaleAndOpacity(DrawContext dc,
                                                  Vec4 point,
                                                  Dimension size)

computeLookAtDistance

protected Double computeLookAtDistance(DrawContext dc)

doDrag

protected void doDrag(DragContext dragContext)

doRenderNow

protected void doRenderNow(DrawContext dc)

Specified by:

doRenderNow in class AbstractAnnotation

drag

public void drag(DragContext dragContext)

Description copied from interface: Draggable

Drag the object given the provided DragContext.

Specified by:

drag in interface Draggable

Parameters:

dragContext - the DragContext of this dragging event.

getAltitudeMode

public Integer getAltitudeMode()

Get the annotation's altitude mode. The altitude mode may be null, indicating that the legacy altitude mode described below will be used.

Legacy altitude mode
If the annotation Position elevation is lower then the highest elevation on the globe, the annotation will be drawn above the ground using its elevation as an offset, scaled by the current vertical exaggeration. Otherwise, the original elevation will be used. This functionality is supported for backward compatibility. New code that uses Globe Annotation should specify an altitude mode.

Returns:

The altitude mode, one of WorldWind.CLAMP_TO_GROUND, WorldWind.RELATIVE_TO_GROUND, WorldWind.ABSOLUTE, or null.

See Also:

setAltitudeMode(Integer)

getAnnotationDrawPoint

public Vec4 getAnnotationDrawPoint(DrawContext dc)

Get the final Vec4 point at which an annotation will be drawn. The altitude mode will be used to determine the annotation point, if an altitude mode has been set. If the altitude mode is null, then the legacy altitude mode described in getAltitudeMode() will be used to determine the point.

Parameters:

dc - the current DrawContext.

Returns:

the annotation draw Cartesian point

See Also:

getAltitudeMode()

getAnnotationDrawPointLegacy

protected Vec4 getAnnotationDrawPointLegacy(DrawContext dc)

Compute the draw point using the legacy altitude mode. See getAltitudeMode() for details on the legacy mode.

Parameters:

dc - the current DrawContext.

Returns:

the annotation draw Cartesian point

See Also:

getAltitudeMode()

getHeightInMeter

public double getHeightInMeter()

Returns the real world height of the annotation frame in meter. If this dimension is greater then zero, the annotation will be scaled so as to maintain this fixed dimension, which makes it appear as part of the surrounding terrain. This overrides min and max distance scaling - however min distance opacity is still accounted for.

If this dimension is zero, the annotation always maintains the same apparent size with possible scaling relative to the viewport center point if min and max distance scale factors are not one.

Returns:

the real world height of the annotation frame in meter.

getPosition

public Position getPosition()

Specified by:

getPosition in interface Locatable

getReferencePosition

public Position getReferencePosition()

Description copied from interface: Movable

A position associated with the object that indicates its aggregate geographic position. The chosen position varies among implementers of this interface. For objects defined by a list of positions, the reference position is typically the first position in the list. For symmetric objects the reference position is often the center of the object. In many cases the object's reference position may be explicitly specified by the application.

Specified by:

getReferencePosition in interface Movable

Returns:

the object's reference position, or null if no reference position is available.

getRestorableState

public String getRestorableState()

Returns an XML state document String describing the public attributes of this GlobeAnnotation.

Specified by:

getRestorableState in interface Restorable

Overrides:

getRestorableState in class AbstractAnnotation

Returns:

XML state document string describing this GlobeAnnotation.

isDragEnabled

public boolean isDragEnabled()

Description copied from interface: Draggable

Indicates whether the object is enabled for dragging.

Specified by:

isDragEnabled in interface Draggable

Returns:

true if the object is enabled, else false.

move

public void move(Position position)

Description copied from interface: Movable

Shift the shape over the globe's surface while maintaining its original azimuth, its orientation relative to North.

Specified by:

move in interface Movable

Parameters:

position - the latitude and longitude to add to the shape's reference position.

moveTo

public void moveTo(Position position)

Description copied from interface: Movable

Move the shape over the globe's surface while maintaining its original azimuth, its orientation relative to North.

Specified by:

moveTo in interface Movable

Parameters:

position - the new position of the shape's reference position.

restoreState

public void restoreState(String stateInXml)

Restores publicly settable attribute values found in the specified XML state document String. The document specified by stateInXml must be a well formed XML document String, or this will throw an IllegalArgumentException. Unknown structures in stateInXml are benign, because they will simply be ignored.

Specified by:

restoreState in interface Restorable

Overrides:

restoreState in class AbstractAnnotation

Parameters:

stateInXml - an XML document String describing a GlobeAnnotation.

Throws:

IllegalArgumentException - If stateInXml is null, or if stateInXml is not a well formed XML document String.

setAltitudeMode

public void setAltitudeMode(Integer altitudeMode)

Set the annotation's altitude mode.

Parameters:

altitudeMode - The altitude mode, one of WorldWind.CLAMP_TO_GROUND, WorldWind.RELATIVE_TO_GROUND, or WorldWind.ABSOLUTE. null indicates that the legacy altitude mode should be used. See getAltitudeMode() for details on this mode.

See Also:

getAltitudeMode()

setDepthFunc

protected void setDepthFunc(DrawContext dc,
                            Vec4 screenPoint)

setDragEnabled

public void setDragEnabled(boolean enabled)

Description copied from interface: Draggable

Controls whether the object is enabled for dragging.

Specified by:

setDragEnabled in interface Draggable

Parameters:

enabled - true if the object is enabled, else false.

setHeightInMeter

public void setHeightInMeter(double meters)

Set the real world height of the annotation frame in meter. If this dimension is greater then zero, the annotation will be scaled so as to maintain this fixed dimension, which makes it appear as part of the surrounding terrain. This overrides min and max distance scaling - however min distance opacity is still accounted for.

If this dimension is zero, the annotation always maintains the same apparent size with possible scaling relative to the viewport center point if min and max distance scale factors are not one.

Parameters:

meters - the real world height of the annotation frame in meter.

setPosition

public void setPosition(Position position)