gov.nasa.worldwind.render
Class SurfacePolylines

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.SurfacePolylines

All Implemented Interfaces:

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

Direct Known Subclasses:

SurfacePolygons

public class SurfacePolylines
extends AbstractSurfaceShape

This class renders fast multiple surface polylines in one pass. It relies on a CompoundVecBuffer.

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 CompoundVecBuffer	buffer
protected boolean	crossesDateLine
protected boolean	needsOutlineTessellation
protected Object	outlineDisplayListCacheKey
protected List<Sector>	sectors

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

Constructor Summary

SurfacePolylines(CompoundVecBuffer buffer)

SurfacePolylines(Sector sector, CompoundVecBuffer buffer)

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	determineActiveGeometry(DrawContext dc, SurfaceTileDrawContext sdc)
protected void	doMoveTo(Position oldReferencePosition, Position newReferencePosition)
protected void	drawInterior(DrawContext dc, SurfaceTileDrawContext sdc)
protected void	drawOutline(DrawContext dc, SurfaceTileDrawContext sdc)
CompoundVecBuffer	getBuffer() Get the underlying CompoundVecBuffer describing the geometry.
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.
List<Sector>	getSectors(DrawContext dc) Returns a List of Sector instances that bound the surface object on the specified DrawContext.
protected void	onGeometryChanged()
void	setLocations(Iterable<? extends LatLon> iterable)
protected int[]	tessellateOutline(DrawContext dc, LatLon referenceLocation)
protected boolean	tessellatePart(GL2 gl, VecBuffer vecBuffer, LatLon referenceLocation)

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

addIntermediateLocations, applyInteriorState, applyInteriorTextureState, applyModelviewTransform, applyOutlineState, beginDrawing, clearCaches, computeEdgeIntervalsPerDegree, computeSectors, computeSectors, containsPole, createActiveAttributes, createGeometryKey, cutAlongDateLine, determineActiveAttributes, doDrawGeographic, doGetRestorableState, doRestoreState, doTessellateInterior, drawGeographic, endDrawing, export, exportAsKML, generateIntermediateLocations, getActiveAttributes, getActiveGeometry, getArea, getArea, getAttributes, getCachedGeometry, getExtent, getHeight, getHighlightAttributes, getInteriorTexture, getLength, getMinAndMaxEdgeIntervals, getPathType, getPerimeter, getRestorableState, getStateKey, getTexelsPerEdgeInterval, getWidth, handleUnsuccessfulInteriorTessellation, intersectionWithMeridian, isExportFormatSupported, isHighlighted, isSectorEmpty, legacyRestoreState, 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.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

buffer

protected CompoundVecBuffer buffer

crossesDateLine

protected boolean crossesDateLine

needsOutlineTessellation

protected boolean needsOutlineTessellation

outlineDisplayListCacheKey

protected Object outlineDisplayListCacheKey

sectors

protected List<Sector> sectors

Constructor Detail

SurfacePolylines

public SurfacePolylines(CompoundVecBuffer buffer)

SurfacePolylines

public SurfacePolylines(Sector sector,
                        CompoundVecBuffer buffer)

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 polylines as open paths rather than closed polygons.

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

determineActiveGeometry

protected void determineActiveGeometry(DrawContext dc,
                                       SurfaceTileDrawContext sdc)

Overrides:

determineActiveGeometry in class AbstractSurfaceShape

doMoveTo

protected void doMoveTo(Position oldReferencePosition,
                        Position newReferencePosition)

Specified by:

doMoveTo in class AbstractSurfaceShape

drawInterior

protected void drawInterior(DrawContext dc,
                            SurfaceTileDrawContext sdc)

Overrides:

drawInterior in class AbstractSurfaceShape

drawOutline

protected void drawOutline(DrawContext dc,
                           SurfaceTileDrawContext sdc)

Overrides:

drawOutline in class AbstractSurfaceShape

getBuffer

public CompoundVecBuffer getBuffer()

Get the underlying CompoundVecBuffer describing the geometry.

Returns:

the underlying CompoundVecBuffer.

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.

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.

getSectors

public List<Sector> getSectors(DrawContext dc)

Description copied from interface: SurfaceObject

Returns a List of Sector instances that bound the surface object on the specified DrawContext.

Specified by:

getSectors in interface SurfaceObject

Overrides:

getSectors in class AbstractSurfaceShape

Parameters:

dc - the DrawContext the surface object is related to.

Returns:

the surface object's bounding Sectors.

onGeometryChanged

protected void onGeometryChanged()

setLocations

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

tessellateOutline

protected int[] tessellateOutline(DrawContext dc,
                                  LatLon referenceLocation)

tessellatePart

protected boolean tessellatePart(GL2 gl,
                                 VecBuffer vecBuffer,
                                 LatLon referenceLocation)