gov.nasa.worldwind.render
Class SurfacePolyline

java.lang.Object
  gov.nasa.worldwind.avlist.AVListImpl
      gov.nasa.worldwind.WWObjectImpl
          gov.nasa.worldwind.render.AbstractSurfaceObject
              gov.nasa.worldwind.render.AbstractSurfaceShape
                  gov.nasa.worldwind.render.SurfacePolyline

All Implemented Interfaces:

AVList, MessageListener, Exportable, ExtentHolder, MeasurableArea, MeasurableLength, Movable, Highlightable, OrderedRenderable, PreRenderable, Renderable, SurfaceObject, SurfaceShape, Restorable, WWObject, PropertyChangeListener, EventListener

public class SurfacePolyline
extends AbstractSurfaceShape
implements Exportable

Nested Class Summary

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

AbstractSurfaceShape.GeometryKey, AbstractSurfaceShape.SurfaceShapeStateKey

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

AbstractSurfaceObject.CacheEntry, AbstractSurfaceObject.SurfaceObjectStateKey

Field Summary

protected boolean	closed
protected Iterable<? extends LatLon>	locations

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

activeAttrs, activeGeometry, activeOutlineGeometry, areaMeasurer, areaMeasurerLastModifiedTime, DEFAULT_HIGHLIGHT_MATERIAL, DEFAULT_INTERIOR_MATERIAL, DEFAULT_MAX_EDGE_INTERVALS, DEFAULT_MIN_EDGE_INTERVALS, DEFAULT_OUTLINE_MATERIAL, DEFAULT_PATH_TYPE, DEFAULT_TEXELS_PER_EDGE_INTERVAL, defaultAttrs, geometryCache, highlightAttrs, highlighted, maxEdgeIntervals, minEdgeIntervals, normalAttrs, pathType, sectorCache, stackHandler, texelsPerEdgeInterval, texture, vertexBuffer

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

delegateOwner, drawBoundingSectors, enableBatchPicking, extentCache, lastModifiedTime, nextUniqueId, pickLayer, pickSupport, pickTileBuilder, pickTiles, uniqueId, visible

Fields inherited from interface gov.nasa.worldwind.Exportable

FORMAT_NOT_SUPPORTED, FORMAT_PARTIALLY_SUPPORTED, FORMAT_SUPPORTED

Constructor Summary

SurfacePolyline()
Constructs a new surface polyline with the default attributes and no locations.

SurfacePolyline(Iterable<? extends LatLon> iterable)
Constructs a new surface polyline with the default attributes and the specified iterable of locations.

SurfacePolyline(ShapeAttributes normalAttrs)
Constructs a new surface polyline with the specified normal (as opposed to highlight) attributes and no locations.

SurfacePolyline(ShapeAttributes normalAttrs, Iterable<? extends LatLon> iterable)
Constructs a new surface polyline with the specified normal (as opposed to highlight) attributes and the specified iterable of locations.

Method Summary

protected boolean	canContainPole() Indicates whether the shape is a closed polygon that can enclose a pole, or an open path that cannot.
protected List<List<LatLon>>	createGeometry(Globe globe, SurfaceTileDrawContext sdc)
protected void	doGetRestorableState(RestorableSupport rs, RestorableSupport.StateObject context)
protected void	doMoveTo(Position oldReferencePosition, Position newReferencePosition)
protected void	doRestoreState(RestorableSupport rs, RestorableSupport.StateObject context)
protected void	drawInterior(DrawContext dc, SurfaceTileDrawContext sdc)
protected void	exportAsKML(Object output) Export the polyline to KML as a <Placemark> element.
Iterable<? extends LatLon>	getLocations()
Iterable<? extends LatLon>	getLocations(Globe globe) Returns the shape's locations as they appear on the specified globe, or null if the shape has no locations.
Position	getReferencePosition() A position associated with the object that indicates its aggregate geographic position.
boolean	isClosed()
protected void	legacyRestoreState(RestorableSupport rs, RestorableSupport.StateObject context) Restores state values from previous versions of the SurfaceShape state XML.
void	setClosed(boolean closed)
void	setLocations(Iterable<? extends LatLon> iterable)

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

addIntermediateLocations, applyInteriorState, applyInteriorTextureState, applyModelviewTransform, applyOutlineState, beginDrawing, clearCaches, computeEdgeIntervalsPerDegree, computeSectors, computeSectors, containsPole, createActiveAttributes, createGeometryKey, cutAlongDateLine, determineActiveAttributes, determineActiveGeometry, doDrawGeographic, doTessellateInterior, drawGeographic, drawOutline, endDrawing, export, generateIntermediateLocations, getActiveAttributes, getActiveGeometry, getArea, getArea, getAttributes, getCachedGeometry, getExtent, getHeight, getHighlightAttributes, getInteriorTexture, getLength, getMinAndMaxEdgeIntervals, getPathType, getPerimeter, getRestorableState, getSectors, getStateKey, getTexelsPerEdgeInterval, getWidth, handleUnsuccessfulInteriorTessellation, intersectionWithMeridian, isExportFormatSupported, isHighlighted, isSectorEmpty, makeOrderedPreRenderable, move, moveTo, onShapeChanged, pathTypeFromString, repeatAroundDateline, restoreState, setAttributes, setHighlightAttributes, setHighlighted, setMinAndMaxEdgeIntervals, setPathType, setTexelsPerEdgeInterval, setupAreaMeasurer, tessellateInterior, tessellateInteriorVertices

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

buildPickRepresentation, computeExtent, computeExtent, createPickedObject, createPickTileBuilder, drawBoundingSectors, drawOrderedRenderable, drawPickRepresentation, getDelegateOwner, getDistanceFromEye, getExtent, getUniqueId, intersectsFrustum, intersectsPickFrustum, intersectsVisibleSector, isDrawBoundingSectors, isEnableBatchPicking, isVisible, makeOrderedRenderable, nextUniqueId, pick, pickBatched, pickOrderedRenderable, preRender, render, setDelegateOwner, setDrawBoundingSectors, setEnableBatchPicking, setVisible, updateModifiedTime

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, toString, wait, wait, wait

Methods inherited from interface gov.nasa.worldwind.Exportable

export, isExportFormatSupported

Methods inherited from interface gov.nasa.worldwind.render.SurfaceObject

getDelegateOwner, getDistanceFromEye, getExtent, isVisible, pick, preRender, render, setDelegateOwner, setVisible

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

Field Detail

closed

protected boolean closed

locations

protected Iterable<? extends LatLon> locations

Constructor Detail

SurfacePolyline

public SurfacePolyline()

Constructs a new surface polyline with the default attributes and no locations.

SurfacePolyline

public SurfacePolyline(Iterable<? extends LatLon> iterable)

Constructs a new surface polyline with the default attributes and the specified iterable of locations.

Note: If fewer than two locations is specified, no polyline is drawn.

Parameters:

iterable - the polyline locations.

Throws:

IllegalArgumentException - if the locations iterable is null.

SurfacePolyline

public SurfacePolyline(ShapeAttributes normalAttrs)

Constructs a new surface polyline with the specified normal (as opposed to highlight) attributes and no locations. Modifying the attribute reference after calling this constructor causes this shape's appearance to change accordingly.

Parameters:

normalAttrs - the normal attributes. May be null, in which case default attributes are used.

SurfacePolyline

public SurfacePolyline(ShapeAttributes normalAttrs,
                       Iterable<? extends LatLon> iterable)

Constructs a new surface polyline with the specified normal (as opposed to highlight) attributes and the specified iterable of locations. Modifying the attribute reference after calling this constructor causes this shape's appearance to change accordingly.

Note: If fewer than two locations is specified, no polyline is drawn.

Parameters:

normalAttrs - the normal attributes. May be null, in which case default attributes are used.

iterable - the polyline locations.

Throws:

IllegalArgumentException - if the locations iterable is null.

Method Detail

canContainPole

protected boolean canContainPole()

Indicates whether the shape is a closed polygon that can enclose a pole, or an open path that cannot. This makes a difference when computing the bounding sector for a shape. For example, consider the positions (-100, 85), (0, 80), (100, 80). If these positions are treated as a closed polygon (a triangle over the North Pole) then the bounding sector is 80 to 90 lat, -180 to 180 lon. But if they are treated as an open path (a line wrapping partway around the pole) then the bounding sector is 80 to 85 lat, -100 to 100 lon. Overridden to treat the shape as an open path if the polyline is not closed.

Overrides:

canContainPole in class AbstractSurfaceShape

Returns:

True if the shape is a closed polygon that can contain a pole, or false if it is treated as an open path that cannot contain a pole.

createGeometry

protected List<List<LatLon>> createGeometry(Globe globe,
                                            SurfaceTileDrawContext sdc)

Specified by:

createGeometry in class AbstractSurfaceShape

doGetRestorableState

protected void doGetRestorableState(RestorableSupport rs,
                                    RestorableSupport.StateObject context)

Overrides:

doGetRestorableState in class AbstractSurfaceShape

doMoveTo

protected void doMoveTo(Position oldReferencePosition,
                        Position newReferencePosition)

Specified by:

doMoveTo in class AbstractSurfaceShape

doRestoreState

protected void doRestoreState(RestorableSupport rs,
                              RestorableSupport.StateObject context)

Overrides:

doRestoreState in class AbstractSurfaceShape

drawInterior

protected void drawInterior(DrawContext dc,
                            SurfaceTileDrawContext sdc)

Overrides:

drawInterior in class AbstractSurfaceShape

exportAsKML

protected void exportAsKML(Object output)
                    throws IOException,
                           XMLStreamException

Export the polyline to KML as a <Placemark> element. The output object will receive the data. This object must be one of: java.io.Writer java.io.OutputStream javax.xml.stream.XMLStreamWriter

Overrides:

exportAsKML in class AbstractSurfaceShape

Parameters:

output - Object to receive the generated KML.

Throws:

XMLStreamException - If an exception occurs while writing the KML

IOException - if an exception occurs while exporting the data.

See Also:

AbstractSurfaceShape.export(String, Object)

getLocations

public Iterable<? extends LatLon> getLocations()

getLocations

public Iterable<? extends LatLon> getLocations(Globe globe)

Description copied from interface: SurfaceShape

Returns the shape's locations as they appear on the specified globe, or null if the shape has no locations.

Specified by:

getLocations in interface SurfaceShape

Parameters:

globe - the globe the shape is related to.

Returns:

the shapes locations on the globe, or null if the shape has no locations.

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

Specified by:

getReferencePosition in class AbstractSurfaceShape

Returns:

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

isClosed

public boolean isClosed()

legacyRestoreState

protected void legacyRestoreState(RestorableSupport rs,
                                  RestorableSupport.StateObject context)

Description copied from class: AbstractSurfaceShape

Restores state values from previous versions of the SurfaceShape state XML. These values are stored or named differently than the current implementation. Those values which have not changed are ignored here, and will restored in AbstractSurfaceShape.doRestoreState(gov.nasa.worldwind.util.RestorableSupport, gov.nasa.worldwind.util.RestorableSupport.StateObject).

Overrides:

legacyRestoreState in class AbstractSurfaceShape

Parameters:

rs - RestorableSupport object which contains the state value properties.

context - active context in the RestorableSupport to read state from.

setClosed

public void setClosed(boolean closed)

setLocations

public void setLocations(Iterable<? extends LatLon> iterable)