DrawContextImpl (NASA World Wind)

java.lang.Object
- gov.nasa.worldwind.avlist.AVListImpl
- - gov.nasa.worldwind.WWObjectImpl
  - - gov.nasa.worldwind.render.DrawContextImpl

All Implemented Interfaces:

AVList, Disposable, MessageListener, DrawContext, WWObject, PropertyChangeListener, EventListener
```
public class DrawContextImpl
extends WWObjectImpl
implements DrawContext
```

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

protected static class DrawContextImpl.OrderedRenderableEntry

Nested Classes
Modifier and Type	Class and Description
`protected static class`	`DrawContextImpl.OrderedRenderableEntry`

Field Summary

Fields
Modifier and Type	Field and Description
`protected AnnotationRenderer`	`annotationRenderer`
`protected Color`	`clearColor`
`protected ClutterFilter`	`clutterFilter`
`protected LinkedHashMap<ScreenCredit,Long>`	`credits`
`protected Layer`	`currentLayer`
`protected DeclutteringTextRenderer`	`declutteringTextRenderer`
`protected boolean`	`deepPickingMode`
`static float`	`DEFAULT_DEPTH_OFFSET_FACTOR`
`static float`	`DEFAULT_DEPTH_OFFSET_UNITS`
`protected long`	`frameTimestamp`
`protected SurfaceTileRenderer`	`geographicSurfaceTileRenderer`
`protected GLContext`	`glContext`
`protected Globe`	`globe`
`protected GLRuntimeCapabilities`	`glRuntimeCaps`
`protected GLU`	`glu`
`protected GpuResourceCache`	`gpuResourceCache`
`protected boolean`	`isOrderedRenderingMode`
`protected Model`	`model`
`protected PickedObjectList`	`objectsInPickRect` The list of objects intersecting the pick rectangle during the most recent pick traversal.
`protected PriorityQueue<DrawContextImpl.OrderedRenderableEntry>`	`orderedRenderables`
`protected Queue<OrderedRenderable>`	`orderedSurfaceRenderables`
`protected Collection<PerformanceStatistic>`	`perFrameStatistics`
`protected Set<String>`	`perFrameStatisticsKeys`
`protected PickedObjectList`	`pickedObjects` The list of objects at the pick point during the most recent pick traversal.
`protected PickPointFrustumList`	`pickFrustumList`
`protected boolean`	`pickingMode`
`protected Point`	`pickPoint` Indicates the current pick point in AWT screen coordinates, or `null` to indicate that there is no pick point.
`protected Dimension`	`pickPointFrustumDimension`
`protected Rectangle`	`pickRect` Indicates the current pick rectangle in AWT screen coordinates, or `null` to indicate that there is no pick rectangle.
`protected ByteBuffer`	`pixelColors` Buffer of RGB colors used to read back the framebuffer's colors and store them in client memory.
`protected boolean`	`preRenderMode`
`protected int`	`redrawRequested`
`protected Collection<Throwable>`	`renderingExceptions`
`protected LightingModel`	`standardLighting`
`protected SectorGeometryList`	`surfaceGeometry`
`protected Terrain`	`terrain`
`protected TextRendererCache`	`textRendererCache`
`protected int`	`uniquePickNumber`
`protected IntSet`	`uniquePixelColors` Set of ints used by `getPickColorsInRectangle(java.awt.Rectangle, int[])` to identify the unique color codes in the specified rectangle.
`protected double`	`verticalExaggeration`
`protected View`	`view`
`protected Position`	`viewportCenterPosition`
`protected Point`	`viewportCenterScreenPoint`
`protected Sector`	`visibleSector`
`protected SectorVisibilityTree`	`visibleSectors`

Constructor Summary

Constructors
Constructor and Description

DrawContextImpl()

Constructors
Constructor and Description
`DrawContextImpl()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addObjectInPickRectangle(PickedObject pickedObject)` Adds the specified picked object to the current list of objects intersecting the pick rectangle.
`void`	`addOrderedRenderable(OrderedRenderable orderedRenderable)` Adds an `OrderedRenderable` to the draw context's ordered renderable list.
`void`	`addOrderedRenderable(OrderedRenderable orderedRenderable, boolean isBehind)` Adds an `OrderedRenderable` to the draw context's ordered renderable list, optionally indicating that the draw context should treat the specified ordered renderable as behind other ordered renderables.
`void`	`addOrderedSurfaceRenderable(OrderedRenderable orderedRenderable)` Adds an `OrderedRenderable` to the draw context's ordered surface renderable queue.
`void`	`addPickedObject(PickedObject pickedObject)` Adds the specified picked object to the list of objects at the pick point.
`void`	`addPickedObjects(PickedObjectList pickedObjects)` Adds a list of picked objects to the current list of objects at the pick point.
`void`	`addPickPointFrustum()` Creates a frustum around the current pick point and adds it to the current list of pick frustums.
`void`	`addPickRectangleFrustum()` Creates a frustum containing the current pick rectangle and adds it to the current list of pick frustums.
`void`	`addRenderingException(Throwable t)` Adds the specified `Throwable` to this DrawContext's collection of rendering exceptions.
`void`	`addScreenCredit(ScreenCredit credit)` Adds a screen-credit icon to display.
`void`	`applyClutterFilter()` Filter overlapping text from the ordered renderable list.
`void`	`beginStandardLighting()` Enables the current standard lighting model.
`Vec4`	`computePointFromPosition(Position position, int altitudeMode)` Computes a Cartesian point from a specified geographic position, applying a specified altitude mode.
`Vec4`	`computeTerrainPoint(Angle lat, Angle lon, double offset)` Compute a model-coordinate point on the terrain.
`void`	`disablePickingMode()` Specifies that the scene controller has ended its pick traversal.
`void`	`dispose()` Free internal resources held by this draw context.
`void`	`drawNormals(float length, FloatBuffer vBuf, FloatBuffer nBuf)` This is a diagnostic method to display normal vectors.
`void`	`drawOutlinedShape(OutlinedShape renderer, Object shape)` Performs a multi-pass rendering technique to ensure that outlines around filled shapes are drawn correctly when blending or ant-aliasing is performed, and that filled portions of the shape resolve depth-buffer fighting with shapes previously drawn in favor of the current shape.
`void`	`drawUnitQuad()` Draws a quadrilateral using the current OpenGL state.
`void`	`drawUnitQuad(TextureCoords texCoords)` Draws a quadrilateral using the current OpenGL state and specified texture coordinates.
`void`	`drawUnitQuadOutline()` Draws a quadrilateral outline using the current OpenGL state.
`void`	`enablePickingMode()` Specifies that the scene controller is beginning its pick traversal.
`void`	`endStandardLighting()` Pops the OpenGL state previously established by `DrawContext.beginStandardLighting()`.
`AnnotationRenderer`	`getAnnotationRenderer()` Returns the draw context's annotation renderer, typically used by annotations that are not contained in an `AnnotationLayer`.
`Color`	`getClearColor()` Returns the WorldWindow's background color.
`ClutterFilter`	`getClutterFilter()` Returns the current clutter filter.
`Layer`	`getCurrentLayer()` Returns the current-layer.
`DeclutteringTextRenderer`	`getDeclutteringTextRenderer()` Returns the draw context's decluttering text renderer.
`int`	`getDrawableHeight()` Indicates the height in pixels of the drawing target associated with this `DrawContext`.
`int`	`getDrawableWidth()` Indicates the width in pixels of the drawing target associated with this `DrawContext`.
`long`	`getFrameTimeStamp()` Returns the time stamp corresponding to the beginning of a pre-render, pick, render sequence.
`SurfaceTileRenderer`	`getGeographicSurfaceTileRenderer()` Returns this draw context's surface tile renderer.
`GL`	`getGL()` Retrieves the current `javax.media.opengl.GL`.
`GLContext`	`getGLContext()` Retrieves this `DrawContext`s javax.media.opengl.GLContext.
`GLDrawable`	`getGLDrawable()` Retrieves the current `javax.media.opengl.GLDrawable`.
`Globe`	`getGlobe()` Retrieves the current `Globe`, which may be null.
`GLRuntimeCapabilities`	`getGLRuntimeCapabilities()` Returns the `GLRuntimeCapabilities` associated with this DrawContext.
`GLU`	`getGLU()` Retrieves the current `javax.media.opengl.glu.GLU`.
`GpuResourceCache`	`getGpuResourceCache()` Returns the GPU resource cache used by this draw context.
`LayerList`	`getLayers()` Retrieves a list containing all the current layers.
`Model`	`getModel()` Retrieves the current `Model`, which may be null.
`PickedObjectList`	`getObjectsInPickRectangle()` Returns the list of objects intersecting the pick rectangle during the most recent pick traversal.
`Queue<OrderedRenderable>`	`getOrderedSurfaceRenderables()` Returns the draw context's ordered surface renderable queue.
`Collection<PerformanceStatistic>`	`getPerFrameStatistics()` Returns the performance statistics that are gathered during each frame.
`Set<String>`	`getPerFrameStatisticsKeys()` Indicates the statistics that are monitored for each frame.
`int`	`getPickColorAtPoint(Point point)` Returns the framebuffer RGB color for a point in AWT screen coordinates, formatted as a pick color code.
`int[]`	`getPickColorsInRectangle(Rectangle rectangle, int[] minAndMaxColorCodes)` Returns an array of the unique framebuffer RGB colors within a rectangle in AWT screen coordinates, formatted as pick color codes.
`PickedObjectList`	`getPickedObjects()` Returns the list of objects at the pick point during the most recent pick traversal.
`PickPointFrustumList`	`getPickFrustums()` Gets the FrustumList containing all the current Pick Frustums
`Point`	`getPickPoint()` Returns the current pick point in AWT screen coordinates.
`Dimension`	`getPickPointFrustumDimension()` Gets the dimension of the current Pick Point Frustum
`Rectangle`	`getPickRectangle()` Returns the current pick rectangle in AWT screen coordinates.
`Vec4`	`getPointOnTerrain(Angle latitude, Angle longitude)` Computes a location's Cartesian point on the currently visible terrain.
`int`	`getRedrawRequested()` Indicates whether a new frame should be generated by the `SceneController`.
`Collection<Throwable>`	`getRenderingExceptions()` Gets the rendering exceptions associated with this DrawContext as a `Collection` of `Throwable` objects.
`Map<ScreenCredit,Long>`	`getScreenCredits()` Returns the screen credits currently held and displayed by this draw context.
`LightingModel`	`getStandardLightingModel()` Returns the current model used for standard lighting.
`SectorGeometryList`	`getSurfaceGeometry()` Retrieves a list of all the sectors rendered so far this frame.
`Terrain`	`getTerrain()` Returns a `Terrain` object that uses the current sector geometry or the current globe to compute surface points.
`TextRendererCache`	`getTextRendererCache()` Returns this draw context's text-renderer cache.
`GpuResourceCache`	`getTextureCache()` Returns the GPU resource cache for this draw context.
`Color`	`getUniquePickColor()` Returns a unique color to serve as a pick identifier during picking.
`Color`	`getUniquePickColorRange(int count)` Returns a range of unique colors to serve as pick identifiers during picking.
`double`	`getVerticalExaggeration()` Retrieves the current vertical exaggeration.
`View`	`getView()` Retrieves the current `View`, which may be null.
`Position`	`getViewportCenterPosition()` Indicates the geographic coordinates of the point on the terrain at the current viewport's center.
`Point`	`getViewportCenterScreenPoint()` Indicates the screen-coordinate point of the current viewport's center.
`Sector`	`getVisibleSector()` Retrieves a `Sector` which is at least as large as the current visible sector.
`List<Sector>`	`getVisibleSectors(double[] resolutions, long timeLimit, Sector sector)` Returns the visible sectors at one of several specified resolutions within a specified search sector.
`void`	`initialize(GLContext glContext)` Initializes this `DrawContext`.
`boolean`	`is2DGlobe()`
`boolean`	`isContinuous2DGlobe()`
`boolean`	`isDeepPickingEnabled()` Indicates whether all items under cursor are picked.
`boolean`	`isOrderedRenderingMode()` Indicates whether the `SceneController` is currently rendering the draw context's `OrderedRenderable`s.
`boolean`	`isPickingMode()` Indicates whether the scene controller is currently picking.
`boolean`	`isPreRenderMode()` Indicates whether the scene controller is currently pre-rendering.
`boolean`	`isSmall(Extent extent, int numPixels)` Indicates whether a specified extent is smaller than a specified number of pixels for the current view.
`OrderedRenderable`	`peekOrderedRenderables()` Returns the next `OrderedRenderable` on the ordered-renderable priority queue but does not remove it from the queue.
`OrderedRenderable`	`pollOrderedRenderables()` Returns the next `OrderedRenderable` on the ordered-renderable priority queue and removes it from the queue.
`void`	`popProjectionOffest()` Removes the current projection matrix offset added by `DrawContext.pushProjectionOffest(Double)`.
`void`	`pushProjectionOffest(Double offset)` Modifies the current projection matrix to slightly offset subsequently drawn objects toward or away from the eye point.
`void`	`restoreDefaultBlending()` Restores the current OpenGL context's blending state to its default.
`void`	`restoreDefaultCurrentColor()` Restores the current OpenGL context's current color to its default.
`void`	`restoreDefaultDepthTesting()` Restores the current OpenGL context's depth testing state to its default.
`void`	`setAnnotationRenderer(AnnotationRenderer ar)` Since `Annotation`s are `Renderable`s, they can be exist outside an `AnnotationLayer`, in which case they are responsible for rendering themselves.
`void`	`setClutterFilter(ClutterFilter filter)` Specifies the clutter filter to use.
`void`	`setCurrentLayer(Layer layer)` Sets the current-layer field to the specified layer or null.
`void`	`setDeepPickingEnabled(boolean tf)` Specifies whether all items under the cursor are picked.
`void`	`setFrameTimeStamp(long frameTimeStamp)` Specifies the time stamp corresponding to the beginning of a pre-render, pick, render sequence.
`void`	`setGLContext(GLContext glContext)` Assigns this `DrawContext` a new javax.media.opengl.GLContext.
`void`	`setGLRuntimeCapabilities(GLRuntimeCapabilities capabilities)` Sets the `GLRuntimeCapabilities` associated with this DrawContext to the specified parameter.
`void`	`setGpuResourceCache(GpuResourceCache gpuResourceCache)` Specifies the GPU resource cache for this draw context.
`void`	`setModel(Model model)` Assign a new `Model`.
`void`	`setOrderedRenderingMode(boolean tf)` Called by the `SceneController` to indicate whether it is currently drawing the draw context's `OrderedRenderable`s.
`void`	`setPerFrameStatistic(String key, String displayName, Object value)` Specifies a performance statistic that's assigned for each frame.
`void`	`setPerFrameStatistics(Collection<PerformanceStatistic> stats)` Specifies a collection of per-frame performance statistics.
`void`	`setPerFrameStatisticsKeys(Set<String> statKeys, Collection<PerformanceStatistic> stats)` Specifies the performance statistics that are monitored during each frame.
`void`	`setPickPoint(Point pickPoint)` Specifies the current pick point in AWT screen coordinates, or `null` to indicate that there is no pick point.
`void`	`setPickPointFrustumDimension(Dimension dim)` Set the size (in pixels) of the pick point frustum at the near plane.
`void`	`setPickRectangle(Rectangle pickRect)` Specifies the current pick rectangle in AWT screen coordinates, or `null` to indicate that there is no pick rectangle.
`void`	`setPreRenderMode(boolean preRenderMode)` Specifies whether the scene controller is pre-rendering.
`void`	`setRedrawRequested(int redrawRequested)` Requests that a new frame should be generated by the `SceneController`.
`void`	`setRenderingExceptions(Collection<Throwable> exceptions)` Sets the rendering exceptions associated with this DrawContext to the specified `Collection` of `Throwable` objects.
`void`	`setStandardLightingModel(LightingModel standardLighting)` Specifies the lighting model used for standard lighting.
`void`	`setSurfaceGeometry(SectorGeometryList surfaceGeometry)` Specifies the current surface geometry.
`void`	`setTextRendererCache(TextRendererCache textRendererCache)` Specifies this context's text renderer cache.
`void`	`setVerticalExaggeration(double verticalExaggeration)` Sets the vertical exaggeration.
`void`	`setView(View view)` Assigns a new `View`.
`void`	`setViewportCenterPosition(Position viewportCenterPosition)` Specifies the geographic coordinates of the point on the terrain at the current viewport's center.
`void`	`setViewportCenterScreenPoint(Point viewportCenterScreenPoint)` Specifies the screen-coordinate point of the current viewport's center.
`void`	`setVisibleSector(Sector s)` Sets the visible `Sector`.

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.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
  - annotationRenderer
```
protected AnnotationRenderer annotationRenderer
```
  - clearColor
```
protected Color clearColor
```
  - clutterFilter
```
protected ClutterFilter clutterFilter
```
  - credits
```
protected LinkedHashMap<ScreenCredit,Long> credits
```
  - currentLayer
```
protected Layer currentLayer
```
  - declutteringTextRenderer
```
protected DeclutteringTextRenderer declutteringTextRenderer
```
  - deepPickingMode
```
protected boolean deepPickingMode
```
  - DEFAULT_DEPTH_OFFSET_FACTOR
```
public static final float DEFAULT_DEPTH_OFFSET_FACTOR
```
    See Also:
    
    Constant Field Values
  - DEFAULT_DEPTH_OFFSET_UNITS
```
public static final float DEFAULT_DEPTH_OFFSET_UNITS
```
    See Also:
    
    Constant Field Values
  - frameTimestamp
```
protected long frameTimestamp
```
  - geographicSurfaceTileRenderer
```
protected SurfaceTileRenderer geographicSurfaceTileRenderer
```
  - glContext
```
protected GLContext glContext
```
  - globe
```
protected Globe globe
```
  - glRuntimeCaps
```
protected GLRuntimeCapabilities glRuntimeCaps
```
  - glu
```
protected GLU glu
```
  - gpuResourceCache
```
protected GpuResourceCache gpuResourceCache
```
  - isOrderedRenderingMode
```
protected boolean isOrderedRenderingMode
```
  - model
```
protected Model model
```
  - objectsInPickRect
```
protected PickedObjectList objectsInPickRect
```
    The list of objects intersecting the pick rectangle during the most recent pick traversal. Initialized to an empty PickedObjectList.
  - orderedRenderables
```
protected PriorityQueue<DrawContextImpl.OrderedRenderableEntry> orderedRenderables
```
  - orderedSurfaceRenderables
```
protected Queue<OrderedRenderable> orderedSurfaceRenderables
```
  - perFrameStatistics
```
protected Collection<PerformanceStatistic> perFrameStatistics
```
  - perFrameStatisticsKeys
```
protected Set<String> perFrameStatisticsKeys
```
  - pickedObjects
```
protected PickedObjectList pickedObjects
```
    The list of objects at the pick point during the most recent pick traversal. Initialized to an empty PickedObjectList.
  - pickFrustumList
```
protected PickPointFrustumList pickFrustumList
```
  - pickingMode
```
protected boolean pickingMode
```
  - pickPoint
```
protected Point pickPoint
```
    Indicates the current pick point in AWT screen coordinates, or null to indicate that there is no pick point. Initially null.
  - pickPointFrustumDimension
```
protected Dimension pickPointFrustumDimension
```
  - pickRect
```
protected Rectangle pickRect
```
    Indicates the current pick rectangle in AWT screen coordinates, or null to indicate that there is no pick rectangle. Initially null.
  - pixelColors
```
protected ByteBuffer pixelColors
```
    Buffer of RGB colors used to read back the framebuffer's colors and store them in client memory.
  - preRenderMode
```
protected boolean preRenderMode
```
  - redrawRequested
```
protected int redrawRequested
```
  - renderingExceptions
```
protected Collection<Throwable> renderingExceptions
```
  - standardLighting
```
protected LightingModel standardLighting
```
  - surfaceGeometry
```
protected SectorGeometryList surfaceGeometry
```
  - terrain
```
protected Terrain terrain
```
  - textRendererCache
```
protected TextRendererCache textRendererCache
```
  - uniquePickNumber
```
protected int uniquePickNumber
```
  - uniquePixelColors
```
protected IntSet uniquePixelColors
```
    Set of ints used by getPickColorsInRectangle(java.awt.Rectangle, int[]) to identify the unique color codes in the specified rectangle. This consolidates duplicate colors to a single entry. We use IntSet to achieve constant time insertion, and to reduce overhead associated associated with storing integer primitives in a HashSet.
  - verticalExaggeration
```
protected double verticalExaggeration
```
  - view
```
protected View view
```
  - viewportCenterPosition
```
protected Position viewportCenterPosition
```
  - viewportCenterScreenPoint
```
protected Point viewportCenterScreenPoint
```
  - visibleSector
```
protected Sector visibleSector
```
  - visibleSectors
```
protected SectorVisibilityTree visibleSectors
```
- Constructor Detail
  - DrawContextImpl
```
public DrawContextImpl()
```
- Method Detail
  - addObjectInPickRectangle
```
public void addObjectInPickRectangle(PickedObject pickedObject)
```
    Description copied from interface: DrawContext
    
    Adds the specified picked object to the current list of objects intersecting the pick rectangle. This list can be accessed by calling DrawContext.getObjectsInPickRectangle().
    
    Specified by:
    
    addObjectInPickRectangle in interface DrawContext
    
    Parameters:
    
    pickedObject - the object to add.
  - addOrderedRenderable
```
public void addOrderedRenderable(OrderedRenderable orderedRenderable)
```
    Description copied from interface: DrawContext
    
    Adds an OrderedRenderable to the draw context's ordered renderable list.
    
    Specified by:
    
    addOrderedRenderable in interface DrawContext
    
    Parameters:
    
    orderedRenderable - the ordered renderable to add.
  - addOrderedRenderable
```
public void addOrderedRenderable(OrderedRenderable orderedRenderable,
                                 boolean isBehind)
```
    Adds an OrderedRenderable to the draw context's ordered renderable list, optionally indicating that the draw context should treat the specified ordered renderable as behind other ordered renderables. If isBehind is true, the draw context treats the specified ordered renderable as though it is behind all other ordered renderables and ignores the ordered renderable's eye distance. If multiple ordered renderables are added with isBehind specified as true, those ordered renderables are drawn according to the order in which they are added.
    
    Specified by:
    
    addOrderedRenderable in interface DrawContext
    
    Parameters:
    
    orderedRenderable - the ordered renderable to add.
    
    isBehind - true to specify that the ordered renderable is behind all other ordered renderables, or false to interpret the ordered renderable according to its eye distance.
  - addOrderedSurfaceRenderable
```
public void addOrderedSurfaceRenderable(OrderedRenderable orderedRenderable)
```
    Adds an OrderedRenderable to the draw context's ordered surface renderable queue. This queue is populated during layer rendering with objects to render on the terrain surface, and is processed immediately after layer rendering.
    
    Specified by:
    
    addOrderedSurfaceRenderable in interface DrawContext
    
    Parameters:
    
    orderedRenderable - the ordered renderable to add.
  - addPickedObject
```
public void addPickedObject(PickedObject pickedObject)
```
    Description copied from interface: DrawContext
    
    Adds the specified picked object to the list of objects at the pick point. This list can be accessed by calling DrawContext.getPickedObjects().
    
    Specified by:
    
    addPickedObject in interface DrawContext
    
    Parameters:
    
    pickedObject - the object to add.
  - addPickedObjects
```
public void addPickedObjects(PickedObjectList pickedObjects)
```
    Description copied from interface: DrawContext
    
    Adds a list of picked objects to the current list of objects at the pick point. This list can be accessed by calling DrawContext.getPickedObjects().
    
    Specified by:
    
    addPickedObjects in interface DrawContext
    
    Parameters:
    
    pickedObjects - the list to add.
  - addPickPointFrustum
```
public void addPickPointFrustum()
```
    Description copied from interface: DrawContext
    
    Creates a frustum around the current pick point and adds it to the current list of pick frustums. The frustum's dimension is specified by calling DrawContext.setPickPointFrustumDimension(java.awt.Dimension).
    This does nothing if the current pick point is null.
    
    Specified by:
    
    addPickPointFrustum in interface DrawContext
  - addPickRectangleFrustum
```
public void addPickRectangleFrustum()
```
    Description copied from interface: DrawContext
    
    Creates a frustum containing the current pick rectangle and adds it to the current list of pick frustums.
    This does nothing if the current pick rectangle is null.
    
    Specified by:
    
    addPickRectangleFrustum in interface DrawContext
  - addRenderingException
```
public void addRenderingException(Throwable t)
```
    Description copied from interface: DrawContext
    
    Adds the specified Throwable to this DrawContext's collection of rendering exceptions. If this DrawContext's collection is null, the specified Throwable is ignored and calling this method is benign.
    
    Specified by:
    
    addRenderingException in interface DrawContext
    
    Parameters:
    
    t - the rendering exception to add as a Throwable.
  - addScreenCredit
```
public void addScreenCredit(ScreenCredit credit)
```
    Description copied from interface: DrawContext
    
    Adds a screen-credit icon to display.
    
    Specified by:
    
    addScreenCredit in interface DrawContext
    
    Parameters:
    
    credit - the screen credit to display.
  - applyClutterFilter
```
public void applyClutterFilter()
```
    Description copied from interface: DrawContext
    
    Filter overlapping text from the ordered renderable list.
    
    Specified by:
    
    applyClutterFilter in interface DrawContext
  - beginStandardLighting
```
public void beginStandardLighting()
```
    Description copied from interface: DrawContext
    
    Enables the current standard lighting model. DrawContext.endStandardLighting() must be called when rendering of the current shape is complete.
    
    Specified by:
    
    beginStandardLighting in interface DrawContext
    
    See Also:
    
    DrawContext.setStandardLightingModel(LightingModel), DrawContext.endStandardLighting()
  - computePointFromPosition
```
public Vec4 computePointFromPosition(Position position,
                                     int altitudeMode)
```
    Description copied from interface: DrawContext
    
    Computes a Cartesian point from a specified geographic position, applying a specified altitude mode.
    
    Specified by:
    
    computePointFromPosition in interface DrawContext
    
    Parameters:
    
    position - the position to convert.
    
    altitudeMode - the altitude mode.
    
    Returns:
    
    the Cartesian point corresponding to the specified position and this context's current globe or terrain.
  - computeTerrainPoint
```
public Vec4 computeTerrainPoint(Angle lat,
                                Angle lon,
                                double offset)
```
    Description copied from interface: DrawContext
    
    Compute a model-coordinate point on the terrain.
    
    Specified by:
    
    computeTerrainPoint in interface DrawContext
    
    Parameters:
    
    lat - the point's latitude.
    
    lon - the point's longitude.
    
    offset - an distance in meters to place the point above or below the terrain.
    
    Returns:
    
    a model-coordinate point offset the specified amount from the current terrain.
  - disablePickingMode
```
public void disablePickingMode()
```
    Description copied from interface: DrawContext
    
    Specifies that the scene controller has ended its pick traversal.
    
    Specified by:
    
    disablePickingMode in interface DrawContext
  - dispose
```
public void dispose()
```
    Free internal resources held by this draw context. A GL context must be current when this method is called.
    
    Specified by:
    
    dispose in interface Disposable
    
    Throws:
    
    GLException - - If an OpenGL context is not current when this method is called.
  - drawNormals
```
public void drawNormals(float length,
                        FloatBuffer vBuf,
                        FloatBuffer nBuf)
```
    Description copied from interface: DrawContext
    
    This is a diagnostic method to display normal vectors.
    
    Specified by:
    
    drawNormals in interface DrawContext
    
    Parameters:
    
    length - the length to draw the vectors, in meters.
    
    vBuf - a vertex buffer. If null, no vectors are drawn.
    
    nBuf - a buffer of normal vectors corresponding to the vertex buffer. If null, no vectors are drawn.
  - drawOutlinedShape
```
public void drawOutlinedShape(OutlinedShape renderer,
                              Object shape)
```
    Description copied from interface: DrawContext
    
    Performs a multi-pass rendering technique to ensure that outlines around filled shapes are drawn correctly when blending or ant-aliasing is performed, and that filled portions of the shape resolve depth-buffer fighting with shapes previously drawn in favor of the current shape.
    
    Specified by:
    
    drawOutlinedShape in interface DrawContext
    
    Parameters:
    
    renderer - an object implementing the OutlinedShape interface for the shape.
    
    shape - the shape to render.
    
    See Also:
    
    OutlinedShape
  - drawUnitQuad
```
public void drawUnitQuad()
```
    Description copied from interface: DrawContext
    
    Draws a quadrilateral using the current OpenGL state. The quadrilateral points are (0, 0), (1, 0), (1, 1), (0, 1).
    
    Specified by:
    
    drawUnitQuad in interface DrawContext
  - drawUnitQuad
```
public void drawUnitQuad(TextureCoords texCoords)
```
    Description copied from interface: DrawContext
    
    Draws a quadrilateral using the current OpenGL state and specified texture coordinates. The quadrilateral points are (0, 0), (1, 0), (1, 1), (0, 1).
    
    Specified by:
    
    drawUnitQuad in interface DrawContext
    
    Parameters:
    
    texCoords - texture coordinates to assign to each quadrilateral vertex.
  - drawUnitQuadOutline
```
public void drawUnitQuadOutline()
```
    Description copied from interface: DrawContext
    
    Draws a quadrilateral outline using the current OpenGL state. The quadrilateral points are (0, 0), (1, 0), (1, 1), (0, 1).
    
    Specified by:
    
    drawUnitQuadOutline in interface DrawContext
  - enablePickingMode
```
public void enablePickingMode()
```
    Description copied from interface: DrawContext
    
    Specifies that the scene controller is beginning its pick traversal.
    
    Specified by:
    
    enablePickingMode in interface DrawContext
  - endStandardLighting
```
public void endStandardLighting()
```
    Description copied from interface: DrawContext
    
    Pops the OpenGL state previously established by DrawContext.beginStandardLighting().
    
    Specified by:
    
    endStandardLighting in interface DrawContext
  - getAnnotationRenderer
```
public AnnotationRenderer getAnnotationRenderer()
```
    Description copied from interface: DrawContext
    
    Returns the draw context's annotation renderer, typically used by annotations that are not contained in an AnnotationLayer.
    
    Specified by:
    
    getAnnotationRenderer in interface DrawContext
    
    Returns:
    
    the annotation renderer.
  - getClearColor
```
public Color getClearColor()
```
    Description copied from interface: DrawContext
    
    Returns the WorldWindow's background color.
    
    Specified by:
    
    getClearColor in interface DrawContext
    
    Returns:
    
    the WorldWindow's background color.
  - getClutterFilter
```
public ClutterFilter getClutterFilter()
```
    Description copied from interface: DrawContext
    
    Returns the current clutter filter.
    
    Specified by:
    
    getClutterFilter in interface DrawContext
    
    Returns:
    
    the current clutter filter.
  - getCurrentLayer
```
public Layer getCurrentLayer()
```
    Description copied from interface: DrawContext
    
    Returns the current-layer. The field is informative only and enables layer contents to determine their containing layer.
    
    Specified by:
    
    getCurrentLayer in interface DrawContext
    
    Returns:
    
    the current layer, or null if no layer is current.
  - getDeclutteringTextRenderer
```
public DeclutteringTextRenderer getDeclutteringTextRenderer()
```
    Description copied from interface: DrawContext
    
    Returns the draw context's decluttering text renderer.
    
    Specified by:
    
    getDeclutteringTextRenderer in interface DrawContext
    
    Returns:
    
    the decluttering text renderer.
  - getDrawableHeight
```
public final int getDrawableHeight()
```
    Description copied from interface: DrawContext
    
    Indicates the height in pixels of the drawing target associated with this DrawContext. The returned height is potentially different from the GL viewport height. If this DrawContext is associated with a GLJPanel, the returned height is the power-of-two ceiling of the viewport, and is therefore almost always larger than the GL viewport height.
    The GL viewport dimensions can be accessed by calling getView().getViewport() on this DrawContext.
    
    Specified by:
    
    getDrawableHeight in interface DrawContext
    
    Returns:
    
    the height of the drawing target associated with this DrawContext, in pixels.
  - getDrawableWidth
```
public final int getDrawableWidth()
```
    Description copied from interface: DrawContext
    
    Indicates the width in pixels of the drawing target associated with this DrawContext. The returned width is potentially different from the GL viewport width. If this DrawContext is associated with a GLJPanel, the returned width is the power-of-two ceiling of the viewport, and is therefore almost always larger than the GL viewport width.
    The GL viewport dimensions can be accessed by calling getView().getViewport() on this DrawContext.
    
    Specified by:
    
    getDrawableWidth in interface DrawContext
    
    Returns:
    
    the width of the drawing target associated with this DrawContext, in pixels.
  - getFrameTimeStamp
```
public long getFrameTimeStamp()
```
    Description copied from interface: DrawContext
    
    Returns the time stamp corresponding to the beginning of a pre-render, pick, render sequence. The stamp remains constant across these three operations so that called objects may avoid recomputing the same values during each of the calls in the sequence.
    
    Specified by:
    
    getFrameTimeStamp in interface DrawContext
    
    Returns:
    
    the frame time stamp. See System.currentTimeMillis() for its numerical meaning.
  - getGeographicSurfaceTileRenderer
```
public SurfaceTileRenderer getGeographicSurfaceTileRenderer()
```
    Description copied from interface: DrawContext
    
    Returns this draw context's surface tile renderer.
    
    Specified by:
    
    getGeographicSurfaceTileRenderer in interface DrawContext
    
    Returns:
    
    this draw context's surface tile renderer.s
  - getGL
```
public final GL getGL()
```
    Description copied from interface: DrawContext
    
    Retrieves the current javax.media.opengl.GL. A GL or GLU is required for all graphical rendering in World Wind.
    
    Specified by:
    
    getGL in interface DrawContext
    
    Returns:
    
    the current GL if available, null otherwise
  - getGLContext
```
public final GLContext getGLContext()
```
    Description copied from interface: DrawContext
    
    Retrieves this DrawContexts javax.media.opengl.GLContext. If this method returns null, then there are potentially no active GLContexts and rendering should be aborted.
    
    Specified by:
    
    getGLContext in interface DrawContext
    
    Returns:
    
    this DrawContexts javax.media.opengl.GLContext.
  - getGLDrawable
```
public final GLDrawable getGLDrawable()
```
    Description copied from interface: DrawContext
    
    Retrieves the current javax.media.opengl.GLDrawable. A GLDrawable can be used to create a GLContext, which can then be used for rendering.
    
    Specified by:
    
    getGLDrawable in interface DrawContext
    
    Returns:
    
    the current GLDrawable, null if none available
  - getGlobe
```
public final Globe getGlobe()
```
    Description copied from interface: DrawContext
    
    Retrieves the current Globe, which may be null.
    
    Specified by:
    
    getGlobe in interface DrawContext
    
    Returns:
    
    the current Globe, which may be null
  - getGLRuntimeCapabilities
```
public GLRuntimeCapabilities getGLRuntimeCapabilities()
```
    Description copied from interface: DrawContext
    
    Returns the GLRuntimeCapabilities associated with this DrawContext.
    
    Specified by:
    
    getGLRuntimeCapabilities in interface DrawContext
    
    Returns:
    
    this DrawContext's associated GLRuntimeCapabilities.
  - getGLU
```
public final GLU getGLU()
```
    Description copied from interface: DrawContext
    
    Retrieves the current javax.media.opengl.glu.GLU. A GLU or GL is required for all graphical rendering in World Wind.
    
    Specified by:
    
    getGLU in interface DrawContext
    
    Returns:
    
    the current GLU if available, null otherwise
  - getGpuResourceCache
```
public GpuResourceCache getGpuResourceCache()
```
    Description copied from interface: DrawContext
    
    Returns the GPU resource cache used by this draw context.
    
    Specified by:
    
    getGpuResourceCache in interface DrawContext
    
    Returns:
    
    the GPU resource cache used by this draw context.
  - getLayers
```
public final LayerList getLayers()
```
    Description copied from interface: DrawContext
    
    Retrieves a list containing all the current layers. No guarantee is made about the order of the layers.
    
    Specified by:
    
    getLayers in interface DrawContext
    
    Returns:
    
    a LayerList containing all the current layers
  - getModel
```
public final Model getModel()
```
    Description copied from interface: DrawContext
    
    Retrieves the current Model, which may be null.
    
    Specified by:
    
    getModel in interface DrawContext
    
    Returns:
    
    the current Model, which may be null
  - getObjectsInPickRectangle
```
public PickedObjectList getObjectsInPickRectangle()
```
    Description copied from interface: DrawContext
    
    Returns the list of objects intersecting the pick rectangle during the most recent pick traversal. The returned list is empty if nothing intersects the pick rectangle, or if the pick rectangle is null.
    
    Specified by:
    
    getObjectsInPickRectangle in interface DrawContext
    
    Returns:
    
    the list of picked objects.
  - getOrderedSurfaceRenderables
```
public Queue<OrderedRenderable> getOrderedSurfaceRenderables()
```
    Returns the draw context's ordered surface renderable queue. This queue is populated during layer rendering with objects to render on the terrain surface, and is processed immediately after layer rendering.
    
    Specified by:
    
    getOrderedSurfaceRenderables in interface DrawContext
    
    Returns:
    
    the draw context's ordered surface renderable queue.
  - getPerFrameStatistics
```
public Collection<PerformanceStatistic> getPerFrameStatistics()
```
    Description copied from interface: DrawContext
    
    Returns the performance statistics that are gathered during each frame.
    
    Specified by:
    
    getPerFrameStatistics in interface DrawContext
    
    Returns:
    
    the performance statistics that are gathered during each frame.
  - getPerFrameStatisticsKeys
```
public Set<String> getPerFrameStatisticsKeys()
```
    Description copied from interface: DrawContext
    
    Indicates the statistics that are monitored for each frame.
    
    Specified by:
    
    getPerFrameStatisticsKeys in interface DrawContext
    
    Returns:
    
    the keys of the statistics monitored for each frame.
  - getPickColorAtPoint
```
public int getPickColorAtPoint(Point point)
```
    Returns the framebuffer RGB color for a point in AWT screen coordinates, formatted as a pick color code. The red, green, and blue components are each stored as an 8-bit unsigned integer, and packed into bits 0-23 of the returned integer as follows: bits 16-23 are red, bits 8-15 are green, and bits 0-7 are blue. This format is consistent with the RGB integers used to create the pick colors in getUniquePickColor.
    This returns 0 if the point contains the clear color, or is outside this draw context's drawable area.
    
    Specified by:
    
    getPickColorAtPoint in interface DrawContext
    
    Parameters:
    
    point - the point to return a color for, in AWT screen coordinates.
    
    Returns:
    
    the RGB color corresponding to the specified point.
  - getPickColorsInRectangle
```
public int[] getPickColorsInRectangle(Rectangle rectangle,
                                      int[] minAndMaxColorCodes)
```
    Returns an array of the unique framebuffer RGB colors within a rectangle in AWT screen coordinates, formatted as pick color codes. The red, green, and blue components are each stored as an 8-bit unsigned integer, and packed into bits 0-23 of the returned integers as follows: bits 16-23 are red, bits 8-15 are green, and bits 0-7 are blue. This format is consistent with the RGB integers used to create the pick colors in getUniquePickColor.
    The returned array contains one entry for each unique color. Points in the rectangle that contain the clear color or are outside this draw context's drawable area are ignored. This returns null if the specified rectangle is empty, or contains only the clear color.
    The minAndMaxColorCodes parameter limits the unique colors that this method returns to the specified range. The minimum color must be stored in array index 0, and the maximum color must be stored in array index 1. These values can be used to specify a small range of colors relative to the framebuffer contents, effectively culling the colors that must be considered by this method and the caller. When specified, these integers must be formatted exactly as the integers this method returns.
    
    Specified by:
    
    getPickColorsInRectangle in interface DrawContext
    
    Parameters:
    
    rectangle - the rectangle to return unique colors for, in AWT screen coordinates.
    
    minAndMaxColorCodes - an two element array representing the minimum and maximum RGB colors to return. May be null to specify that all color codes must be returned.
    
    Returns:
    
    the unique RGB colors corresponding to the specified rectangle, or null if the rectangle is empty or the rectangle contains only the clear color.
  - getPickedObjects
```
public PickedObjectList getPickedObjects()
```
    Description copied from interface: DrawContext
    
    Returns the list of objects at the pick point during the most recent pick traversal. The returned list is empty if nothing is at the pick point, or if the pick point is null.
    
    Specified by:
    
    getPickedObjects in interface DrawContext
    
    Returns:
    
    the list of picked objects.
  - getPickFrustums
```
public PickPointFrustumList getPickFrustums()
```
    Description copied from interface: DrawContext
    
    Gets the FrustumList containing all the current Pick Frustums
    
    Specified by:
    
    getPickFrustums in interface DrawContext
    
    Returns:
    
    FrustumList of Pick Frustums
  - getPickPoint
```
public Point getPickPoint()
```
    Description copied from interface: DrawContext
    
    Returns the current pick point in AWT screen coordinates.
    
    Specified by:
    
    getPickPoint in interface DrawContext
    
    Returns:
    
    the current pick point, or null if no pick point is available.
    
    See Also:
    
    DrawContext.setPickPoint(java.awt.Point)
  - getPickPointFrustumDimension
```
public Dimension getPickPointFrustumDimension()
```
    Description copied from interface: DrawContext
    
    Gets the dimension of the current Pick Point Frustum
    
    Specified by:
    
    getPickPointFrustumDimension in interface DrawContext
    
    Returns:
    
    the dimension of the current Pick Point Frustum
  - getPickRectangle
```
public Rectangle getPickRectangle()
```
    Description copied from interface: DrawContext
    
    Returns the current pick rectangle in AWT screen coordinates.
    
    Specified by:
    
    getPickRectangle in interface DrawContext
    
    Returns:
    
    the current pick rectangle, or null if no pick rectangle is current.
    
    See Also:
    
    DrawContext.setPickRectangle(java.awt.Rectangle)
  - getPointOnTerrain
```
public Vec4 getPointOnTerrain(Angle latitude,
                              Angle longitude)
```
    Description copied from interface: DrawContext
    
    Computes a location's Cartesian point on the currently visible terrain.
    
    Specified by:
    
    getPointOnTerrain in interface DrawContext
    
    Parameters:
    
    latitude - the location's latitude.
    
    longitude - the location's longitude.
    
    Returns:
    
    the location's corresponding Cartesian point, or null if the location is not currently visible.
  - getRedrawRequested
```
public int getRedrawRequested()
```
    Description copied from interface: DrawContext
    
    Indicates whether a new frame should be generated by the SceneController.
    
    Specified by:
    
    getRedrawRequested in interface DrawContext
    
    Returns:
    
    the delay in milliseconds if a redraw has been requested, otherwise 0.
  - getRenderingExceptions
```
public Collection<Throwable> getRenderingExceptions()
```
    Description copied from interface: DrawContext
    
    Gets the rendering exceptions associated with this DrawContext as a Collection of Throwable objects. If non-null, the returned Collection is used as the data structure that accumulates rendering exceptions passed to this DrawContext in DrawContext.addRenderingException(Throwable). A null collection indicates this DrawContext does not accumulate rendering exceptions.
    
    Specified by:
    
    getRenderingExceptions in interface DrawContext
    
    Returns:
    
    the Collection used to accumulate rendering exceptions, or null if this DrawContext does not accumulate rendering exceptions.
  - getScreenCredits
```
public Map<ScreenCredit,Long> getScreenCredits()
```
    Description copied from interface: DrawContext
    
    Returns the screen credits currently held and displayed by this draw context.
    
    Specified by:
    
    getScreenCredits in interface DrawContext
    
    Returns:
    
    the screen credits currently held by this draw context.
  - getStandardLightingModel
```
public LightingModel getStandardLightingModel()
```
    Description copied from interface: DrawContext
    
    Returns the current model used for standard lighting.
    
    Specified by:
    
    getStandardLightingModel in interface DrawContext
    
    Returns:
    
    the current standard lighting model, or null if no model is defined.
  - getSurfaceGeometry
```
public SectorGeometryList getSurfaceGeometry()
```
    Description copied from interface: DrawContext
    
    Retrieves a list of all the sectors rendered so far this frame.
    
    Specified by:
    
    getSurfaceGeometry in interface DrawContext
    
    Returns:
    
    a SectorGeometryList containing every SectorGeometry rendered so far this render pass.
  - getTerrain
```
public Terrain getTerrain()
```
    Description copied from interface: DrawContext
    
    Returns a Terrain object that uses the current sector geometry or the current globe to compute surface points.
    
    Specified by:
    
    getTerrain in interface DrawContext
    
    Returns:
    
    a terrain object for computing surface points and intersections.
  - getTextRendererCache
```
public TextRendererCache getTextRendererCache()
```
    Description copied from interface: DrawContext
    
    Returns this draw context's text-renderer cache.
    
    Specified by:
    
    getTextRendererCache in interface DrawContext
    
    Returns:
    
    this context's text renderer cache.
  - getTextureCache
```
public GpuResourceCache getTextureCache()
```
    Description copied from interface: DrawContext
    
    Returns the GPU resource cache for this draw context. This method returns the same value as DrawContext.getGpuResourceCache().
    
    Specified by:
    
    getTextureCache in interface DrawContext
    
    Returns:
    
    the GPU resource cache for this draw context.
    
    See Also:
    
    DrawContext.getGpuResourceCache()
  - getUniquePickColor
```
public Color getUniquePickColor()
```
    Description copied from interface: DrawContext
    
    Returns a unique color to serve as a pick identifier during picking. This allocates a single unique color from the pick color address space and returns that color. The color's RGB components represent an address to the pick color code.
    
    Specified by:
    
    getUniquePickColor in interface DrawContext
    
    Returns:
    
    a unique pick color.
  - getUniquePickColorRange
```
public Color getUniquePickColorRange(int count)
```
    Description copied from interface: DrawContext
    
    Returns a range of unique colors to serve as pick identifiers during picking. This allocates count unique colors from the pick color address space and returns the first color in the range. The first color's RGB components represent an address to the beginning of a sequential range of pick color codes. This method is similar to calling the no-argument DrawContext.getUniquePickColor() count times, but guarantees a contiguous range of color codes and is more efficient when count is large.
    The number of pick colors is limited to a finite address space. This method returns null when there are fewer than count remaining unique colors in the pick color address space, or when count is less than 1.
    
    Specified by:
    
    getUniquePickColorRange in interface DrawContext
    
    Parameters:
    
    count - the number of unique colors to allocate.
    
    Returns:
    
    the first unique pick color if there are sufficient unique colors remaining and count is greater than 0, otherwise null.
  - getVerticalExaggeration
```
public final double getVerticalExaggeration()
```
    Description copied from interface: DrawContext
    
    Retrieves the current vertical exaggeration. Vertical exaggeration affects the appearance of areas with varied elevation. A vertical exaggeration of zero creates a surface which exactly fits the shape of the underlying Globe. A vertical exaggeration of 3 will create mountains and valleys which are three times as high/deep as they really are.
    
    Specified by:
    
    getVerticalExaggeration in interface DrawContext
    
    Returns:
    
    the current vertical exaggeration
  - getView
```
public final View getView()
```
    Description copied from interface: DrawContext
    
    Retrieves the current View, which may be null.
    
    Specified by:
    
    getView in interface DrawContext
    
    Returns:
    
    the current View, which may be null
  - getViewportCenterPosition
```
public Position getViewportCenterPosition()
```
    Description copied from interface: DrawContext
    
    Indicates the geographic coordinates of the point on the terrain at the current viewport's center.
    
    Specified by:
    
    getViewportCenterPosition in interface DrawContext
    
    Returns:
    
    the geographic coordinates of the current viewport's center. Returns null if the globe's surface is not under the viewport's center point.
  - getViewportCenterScreenPoint
```
public Point getViewportCenterScreenPoint()
```
    Description copied from interface: DrawContext
    
    Indicates the screen-coordinate point of the current viewport's center.
    
    Specified by:
    
    getViewportCenterScreenPoint in interface DrawContext
    
    Returns:
    
    the screen-coordinate point of the current viewport's center.
  - getVisibleSector
```
public final Sector getVisibleSector()
```
    Description copied from interface: DrawContext
    
    Retrieves a Sector which is at least as large as the current visible sector. The value returned is the value passed to SetVisibleSector. This method may return null.
    
    Specified by:
    
    getVisibleSector in interface DrawContext
    
    Returns:
    
    a Sector at least the size of the current visible sector, null if unavailable
  - getVisibleSectors
```
public List<Sector> getVisibleSectors(double[] resolutions,
                                      long timeLimit,
                                      Sector sector)
```
    Description copied from interface: DrawContext
    
    Returns the visible sectors at one of several specified resolutions within a specified search sector. Several sectors resolutions may be specified along with a time limit. The best resolution that can be determined within the time limit is returned.
    Adherence to the time limit is not precise. The limit is checked only between full searches at each resolution. The search may take more than the specified time, but will terminate if no time is left before starting a higher-resolution search.
    
    Specified by:
    
    getVisibleSectors in interface DrawContext
    
    Parameters:
    
    resolutions - the resolutions of the sectors to return, in latitude.
    
    timeLimit - the amount of time, in milliseconds, to allow for searching.
    
    sector - the sector to decompose into visible sectors.
    
    Returns:
    
    the visible sectors at the best resolution achievable given the time limit. The actual resolution can be determined by examining the delta-latitude value of any of the returned sectors.
  - initialize
```
public final void initialize(GLContext glContext)
```
    Description copied from interface: DrawContext
    
    Initializes this DrawContext. This method should be called at the beginning of each frame to prepare the DrawContext for the coming render pass.
    
    Specified by:
    
    initialize in interface DrawContext
    
    Parameters:
    
    glContext - the javax.media.opengl.GLContext to use for this render pass
  - is2DGlobe
```
public boolean is2DGlobe()
```
    Specified by:
    
    is2DGlobe in interface DrawContext
  - isContinuous2DGlobe
```
public boolean isContinuous2DGlobe()
```
    Specified by:
    
    isContinuous2DGlobe in interface DrawContext
  - isDeepPickingEnabled
```
public boolean isDeepPickingEnabled()
```
    Description copied from interface: DrawContext
    
    Indicates whether all items under cursor are picked.
    
    Specified by:
    
    isDeepPickingEnabled in interface DrawContext
    
    Returns:
    
    true if all items under the cursor are picked, otherwise false
  - isOrderedRenderingMode
```
public boolean isOrderedRenderingMode()
```
    Description copied from interface: DrawContext
    
    Indicates whether the SceneController is currently rendering the draw context's OrderedRenderables. When the this method returns false during a call to an ordered renderable's Renderable.render(DrawContext) method, the ordered renderable should add itself to the draw context via DrawContext.addOrderedRenderable(OrderedRenderable) rather than draw it. When this method returns true during a call to its render method, the ordered renderable should draw itself.
    
    Specified by:
    
    isOrderedRenderingMode in interface DrawContext
    
    Returns:
    
    true if the scene controller is currently rendering its ordered renderables, otherwise false.
  - isPickingMode
```
public boolean isPickingMode()
```
    Description copied from interface: DrawContext
    
    Indicates whether the scene controller is currently picking.
    
    Specified by:
    
    isPickingMode in interface DrawContext
    
    Returns:
    
    true if the scene controller is picking, otherwise false
  - isPreRenderMode
```
public boolean isPreRenderMode()
```
    Description copied from interface: DrawContext
    
    Indicates whether the scene controller is currently pre-rendering.
    
    Specified by:
    
    isPreRenderMode in interface DrawContext
    
    Returns:
    
    true if pre-rendering, otherwise false.
    
    See Also:
    
    PreRenderable
  - isSmall
```
public boolean isSmall(Extent extent,
                       int numPixels)
```
    Description copied from interface: DrawContext
    
    Indicates whether a specified extent is smaller than a specified number of pixels for the current view.
    
    Specified by:
    
    isSmall in interface DrawContext
    
    Parameters:
    
    extent - the extent to test. May be null, in which case this method returns false.
    
    numPixels - the number of pixels at and below which the extent is considered too small.
    
    Returns:
    
    true if the projected extent is smaller than the specified number of pixels, otherwise false.
  - peekOrderedRenderables
```
public OrderedRenderable peekOrderedRenderables()
```
    Description copied from interface: DrawContext
    
    Returns the next OrderedRenderable on the ordered-renderable priority queue but does not remove it from the queue.
    
    Specified by:
    
    peekOrderedRenderables in interface DrawContext
    
    Returns:
    
    the next ordered renderable, or null if there are no more ordered renderables on the queue.
  - pollOrderedRenderables
```
public OrderedRenderable pollOrderedRenderables()
```
    Description copied from interface: DrawContext
    
    Returns the next OrderedRenderable on the ordered-renderable priority queue and removes it from the queue.
    
    Specified by:
    
    pollOrderedRenderables in interface DrawContext
    
    Returns:
    
    the next ordered renderable, or null if there are no more ordered renderables on the queue.
  - popProjectionOffest
```
public void popProjectionOffest()
```
    Description copied from interface: DrawContext
    
    Removes the current projection matrix offset added by DrawContext.pushProjectionOffest(Double).
    
    Specified by:
    
    popProjectionOffest in interface DrawContext
    
    See Also:
    
    DrawContext.pushProjectionOffest(Double)
  - pushProjectionOffest
```
public void pushProjectionOffest(Double offset)
```
    Description copied from interface: DrawContext
    
    Modifies the current projection matrix to slightly offset subsequently drawn objects toward or away from the eye point. This gives those objects visual priority over objects at the same or nearly the same position. After the objects are drawn, call DrawContext.popProjectionOffest() to cancel the effect for subsequently drawn objects.
    Note: This capability is meant to be applied only within a single Renderable. It is not intended as a means to offset a whole Renderable or collection of Renderables.
    See "Mathematics for Game Programming and 3D Computer Graphics, 2 ed." by Eric Lengyel, Section 9.1, "Depth Value Offset" for a description of this technique.
    
    Specified by:
    
    pushProjectionOffest in interface DrawContext
    
    Parameters:
    
    offset - a reference to an offset value, typically near 1.0, or null to request use of the default value. Values less than 1.0 pull objects toward the eye point, values greater than 1.0 push objects away from the eye point. The default value is 0.99.
    
    See Also:
    
    DrawContext.popProjectionOffest()
  - restoreDefaultBlending
```
public void restoreDefaultBlending()
```
    Description copied from interface: DrawContext
    
    Restores the current OpenGL context's blending state to its default.
    
    Specified by:
    
    restoreDefaultBlending in interface DrawContext
  - restoreDefaultCurrentColor
```
public void restoreDefaultCurrentColor()
```
    Description copied from interface: DrawContext
    
    Restores the current OpenGL context's current color to its default.
    
    Specified by:
    
    restoreDefaultCurrentColor in interface DrawContext
  - restoreDefaultDepthTesting
```
public void restoreDefaultDepthTesting()
```
    Description copied from interface: DrawContext
    
    Restores the current OpenGL context's depth testing state to its default.
    
    Specified by:
    
    restoreDefaultDepthTesting in interface DrawContext
  - setAnnotationRenderer
```
public void setAnnotationRenderer(AnnotationRenderer ar)
```
    Description copied from interface: DrawContext
    
    Since Annotations are Renderables, they can be exist outside an AnnotationLayer, in which case they are responsible for rendering themselves. The draw context's annotation renderer provides an active renderer for that purpose.
    
    Specified by:
    
    setAnnotationRenderer in interface DrawContext
    
    Parameters:
    
    ar - the new annotation renderer for the draw context.
  - setClutterFilter
```
public void setClutterFilter(ClutterFilter filter)
```
    Description copied from interface: DrawContext
    
    Specifies the clutter filter to use. May be null to indicate no decluttering.
    
    Specified by:
    
    setClutterFilter in interface DrawContext
    
    Parameters:
    
    filter - the clutter filter.
  - setCurrentLayer
```
public void setCurrentLayer(Layer layer)
```
    Description copied from interface: DrawContext
    
    Sets the current-layer field to the specified layer or null. The field is informative only and enables layer contents to determine their containing layer.
    
    Specified by:
    
    setCurrentLayer in interface DrawContext
    
    Parameters:
    
    layer - the current layer or null.
  - setDeepPickingEnabled
```
public void setDeepPickingEnabled(boolean tf)
```
    Description copied from interface: DrawContext
    
    Specifies whether all items under the cursor are picked.
    
    Specified by:
    
    setDeepPickingEnabled in interface DrawContext
    
    Parameters:
    
    tf - true to pick all objects under the cursor
  - setFrameTimeStamp
```
public void setFrameTimeStamp(long frameTimeStamp)
```
    Description copied from interface: DrawContext
    
    Specifies the time stamp corresponding to the beginning of a pre-render, pick, render sequence. The stamp must remain constant across these three operations so that called objects may avoid recomputing the same values during each of the calls in the sequence.
    
    Specified by:
    
    setFrameTimeStamp in interface DrawContext
    
    Parameters:
    
    frameTimeStamp - the frame time stamp. See System.currentTimeMillis() for its numerical meaning.
  - setGLContext
```
public final void setGLContext(GLContext glContext)
```
    Description copied from interface: DrawContext
    
    Assigns this DrawContext a new javax.media.opengl.GLContext. May throw a NullPointerException if glContext is null.
    
    Specified by:
    
    setGLContext in interface DrawContext
    
    Parameters:
    
    glContext - the new javax.media.opengl.GLContext
  - setGLRuntimeCapabilities
```
public void setGLRuntimeCapabilities(GLRuntimeCapabilities capabilities)
```
    Description copied from interface: DrawContext
    
    Sets the GLRuntimeCapabilities associated with this DrawContext to the specified parameter.
    
    Specified by:
    
    setGLRuntimeCapabilities in interface DrawContext
    
    Parameters:
    
    capabilities - the GLRuntimeCapabilities to be associated with this DrawContext.
  - setGpuResourceCache
```
public void setGpuResourceCache(GpuResourceCache gpuResourceCache)
```
    Description copied from interface: DrawContext
    
    Specifies the GPU resource cache for this draw context.
    
    Specified by:
    
    setGpuResourceCache in interface DrawContext
    
    Parameters:
    
    gpuResourceCache - the GPU resource cache for this draw context.
  - setModel
```
public final void setModel(Model model)
```
    Description copied from interface: DrawContext
    
    Assign a new Model. Some layers cannot function properly with a null Model. It is recommended that the Model is never set to null during a normal render pass.
    
    Specified by:
    
    setModel in interface DrawContext
    
    Parameters:
    
    model - the new Model
  - setOrderedRenderingMode
```
public void setOrderedRenderingMode(boolean tf)
```
    Description copied from interface: DrawContext
    
    Called by the SceneController to indicate whether it is currently drawing the draw context's OrderedRenderables. See DrawContext.isOrderedRenderingMode() for more information.
    
    Specified by:
    
    setOrderedRenderingMode in interface DrawContext
    
    Parameters:
    
    tf - true if ordered renderables are being drawn, false if ordered renderables are only being accumulated.
  - setPerFrameStatistic
```
public void setPerFrameStatistic(String key,
                                 String displayName,
                                 Object value)
```
    Description copied from interface: DrawContext
    
    Specifies a performance statistic that's assigned for each frame. Use this method to update the value of a specific statistic.
    
    Specified by:
    
    setPerFrameStatistic in interface DrawContext
    
    Parameters:
    
    key - the key identifying the statistic to monitor.
    
    displayName - the name to use when displaying this statistic.
    
    value - the statistic's value. May be null.
    
    See Also:
    
    DrawContext.setPerFrameStatistics(java.util.Collection)
  - setPerFrameStatistics
```
public void setPerFrameStatistics(Collection<PerformanceStatistic> stats)
```
    Description copied from interface: DrawContext
    
    Specifies a collection of per-frame performance statistics. Use this method to update a group of statistics.
    
    Specified by:
    
    setPerFrameStatistics in interface DrawContext
    
    Parameters:
    
    stats - the statistic keys and their associated values.
    
    See Also:
    
    DrawContext.setPerFrameStatistic(String, String, Object)
  - setPerFrameStatisticsKeys
```
public void setPerFrameStatisticsKeys(Set<String> statKeys,
                                      Collection<PerformanceStatistic> stats)
```
    Description copied from interface: DrawContext
    
    Specifies the performance statistics that are monitored during each frame. Both arguments to this method may be null. If either is null then statistics are not gathered.
    
    Specified by:
    
    setPerFrameStatisticsKeys in interface DrawContext
    
    Parameters:
    
    statKeys - the keys identifying the statistics to monitor.
    
    stats - a list in which the statistics are placed as they're monitored.
  - setPickPoint
```
public void setPickPoint(Point pickPoint)
```
    Description copied from interface: DrawContext
    
    Specifies the current pick point in AWT screen coordinates, or null to indicate that there is no pick point. During each pick traversal, layers determine if their contents are drawn at the pick point. If so, layers add each unique picked object to a PickedObjectList on this draw context by calling DrawContext.addPickedObject(gov.nasa.worldwind.pick.PickedObject). This list can be accessed by calling DrawContext.getPickedObjects().
    If the pick point is null, the pick point is ignored during each pick traversal, and the list of objects returned by getPickedObjects is empty.
    
    Specified by:
    
    setPickPoint in interface DrawContext
    
    Parameters:
    
    pickPoint - the current pick point, or null to specify that there is no pick point.
  - setPickPointFrustumDimension
```
public void setPickPointFrustumDimension(Dimension dim)
```
    Description copied from interface: DrawContext
    
    Set the size (in pixels) of the pick point frustum at the near plane.
    
    Specified by:
    
    setPickPointFrustumDimension in interface DrawContext
    
    Parameters:
    
    dim - dimension of pick point frustum
  - setPickRectangle
```
public void setPickRectangle(Rectangle pickRect)
```
    Description copied from interface: DrawContext
    
    Specifies the current pick rectangle in AWT screen coordinates, or null to indicate that there is no pick rectangle. During each pick traversal, layers determine if their contents intersect the pick rectangle. If so, layers add each unique picked object to a PickedObjectList on this draw context by calling DrawContext.addObjectInPickRectangle(gov.nasa.worldwind.pick.PickedObject). This is list can be accessed by calling DrawContext.getObjectsInPickRectangle().
    If the pick rectangle is null, the pick rectangle is ignored during each pick traversal, and the list of objects returned by getObjectsInPickRectangle is empty.
    
    Specified by:
    
    setPickRectangle in interface DrawContext
    
    Parameters:
    
    pickRect - the current pick rectangle, or null to specify that there is no pick rectangle.
  - setPreRenderMode
```
public void setPreRenderMode(boolean preRenderMode)
```
    Description copied from interface: DrawContext
    
    Specifies whether the scene controller is pre-rendering.
    
    Specified by:
    
    setPreRenderMode in interface DrawContext
    
    Parameters:
    
    preRenderMode - true to indicate pre-rendering, otherwise false.
    
    See Also:
    
    PreRenderable
  - setRedrawRequested
```
public void setRedrawRequested(int redrawRequested)
```
    Description copied from interface: DrawContext
    
    Requests that a new frame should be generated by the SceneController.
    
    Specified by:
    
    setRedrawRequested in interface DrawContext
    
    Parameters:
    
    redrawRequested - a delay in milliseconds if a redraw is requested, otherwise 0.
  - setRenderingExceptions
```
public void setRenderingExceptions(Collection<Throwable> exceptions)
```
    Description copied from interface: DrawContext
    
    Sets the rendering exceptions associated with this DrawContext to the specified Collection of Throwable objects. If non-null, the specified Collection is used as the data structure that accumulates rendering exceptions passed to this DrawContext in DrawContext.addRenderingException(Throwable). A null collection indicates this DrawContext should not accumulate rendering exceptions.
    
    Specified by:
    
    setRenderingExceptions in interface DrawContext
    
    Parameters:
    
    exceptions - the Collection of exceptions to be used to accumulate rendering exceptions, or null to disable accumulation of rendering exception.
  - setStandardLightingModel
```
public void setStandardLightingModel(LightingModel standardLighting)
```
    Description copied from interface: DrawContext
    
    Specifies the lighting model used for standard lighting.
    
    Specified by:
    
    setStandardLightingModel in interface DrawContext
    
    Parameters:
    
    standardLighting - the lighting model to use for standard lighting, or null to disable standard lighting.
  - setSurfaceGeometry
```
public void setSurfaceGeometry(SectorGeometryList surfaceGeometry)
```
    Description copied from interface: DrawContext
    
    Specifies the current surface geometry.
    
    Specified by:
    
    setSurfaceGeometry in interface DrawContext
    
    Parameters:
    
    surfaceGeometry - the surface geometry to make current. May be null, indicating no surface geometry.
  - setTextRendererCache
```
public void setTextRendererCache(TextRendererCache textRendererCache)
```
    Description copied from interface: DrawContext
    
    Specifies this context's text renderer cache.
    
    Specified by:
    
    setTextRendererCache in interface DrawContext
    
    Parameters:
    
    textRendererCache - the context's text renderer cache.
  - setVerticalExaggeration
```
public final void setVerticalExaggeration(double verticalExaggeration)
```
    Description copied from interface: DrawContext
    
    Sets the vertical exaggeration. Vertical exaggeration affects the appearance of areas with varied elevation. A vertical exaggeration of zero creates a surface which exactly fits the shape of the underlying Globe. A vertical exaggeration of 3 will create mountains and valleys which are three times as high/deep as they really are.
    
    Specified by:
    
    setVerticalExaggeration in interface DrawContext
    
    Parameters:
    
    verticalExaggeration - the new vertical exaggeration.
  - setView
```
public final void setView(View view)
```
    Description copied from interface: DrawContext
    
    Assigns a new View. Some layers cannot function properly with a null View. It is recommended that the View is never set to null during a normal render pass.
    
    Specified by:
    
    setView in interface DrawContext
    
    Parameters:
    
    view - the enw View
  - setViewportCenterPosition
```
public void setViewportCenterPosition(Position viewportCenterPosition)
```
    Description copied from interface: DrawContext
    
    Specifies the geographic coordinates of the point on the terrain at the current viewport's center.
    
    Specified by:
    
    setViewportCenterPosition in interface DrawContext
    
    Parameters:
    
    viewportCenterPosition - the geographic coordinates of the current viewport's center. May be null.
  - setViewportCenterScreenPoint
```
public void setViewportCenterScreenPoint(Point viewportCenterScreenPoint)
```
    Description copied from interface: DrawContext
    
    Specifies the screen-coordinate point of the current viewport's center.
    
    Specified by:
    
    setViewportCenterScreenPoint in interface DrawContext
    
    Parameters:
    
    viewportCenterScreenPoint - the screen-coordinate point of the current viewport's center.
  - setVisibleSector
```
public final void setVisibleSector(Sector s)
```
    Description copied from interface: DrawContext
    
    Sets the visible Sector. The new visible sector must completely encompass the Sector which is visible on the display.
    
    Specified by:
    
    setVisibleSector in interface DrawContext
    
    Parameters:
    
    s - the new visible Sector

Class DrawContextImpl

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class gov.nasa.worldwind.WWObjectImpl

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.beans.PropertyChangeListener

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

Field Detail

annotationRenderer

clearColor

clutterFilter

credits

currentLayer

declutteringTextRenderer

deepPickingMode

DEFAULT_DEPTH_OFFSET_FACTOR

DEFAULT_DEPTH_OFFSET_UNITS

frameTimestamp

geographicSurfaceTileRenderer

glContext

globe

glRuntimeCaps

glu

gpuResourceCache

isOrderedRenderingMode

model

objectsInPickRect

orderedRenderables

orderedSurfaceRenderables

perFrameStatistics

perFrameStatisticsKeys

pickedObjects

pickFrustumList

pickingMode

pickPoint

pickPointFrustumDimension

pickRect

pixelColors

preRenderMode

redrawRequested

renderingExceptions

standardLighting

surfaceGeometry

terrain

textRendererCache

uniquePickNumber

uniquePixelColors

verticalExaggeration

view

viewportCenterPosition

viewportCenterScreenPoint

visibleSector

visibleSectors

Constructor Detail

DrawContextImpl

Method Detail

addObjectInPickRectangle

addOrderedRenderable

addOrderedRenderable

addOrderedSurfaceRenderable

addPickedObject

addPickedObjects

addPickPointFrustum

addPickRectangleFrustum

addRenderingException

addScreenCredit

applyClutterFilter

beginStandardLighting

computePointFromPosition

computeTerrainPoint

disablePickingMode

dispose

drawNormals

drawOutlinedShape

drawUnitQuad

drawUnitQuad