gov.nasa.worldwind.render
Class Wedge

java.lang.Object
  gov.nasa.worldwind.avlist.AVListImpl
      gov.nasa.worldwind.WWObjectImpl
          gov.nasa.worldwind.render.AbstractShape
              gov.nasa.worldwind.render.RigidShape
                  gov.nasa.worldwind.render.Wedge

All Implemented Interfaces:

AVList, MessageListener, Exportable, ExtentHolder, Movable, GeographicExtent, Highlightable, OrderedRenderable, Renderable, Restorable, WWObject, PropertyChangeListener, EventListener

public class Wedge
extends RigidShape

A general cylinder volume defined by a center position, height and radius, or alternatively, by three axis radii.

Nested Class Summary

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

RigidShape.Offsets, RigidShape.ShapeData

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

AbstractShape.AbstractShapeData

Field Summary

protected static int	DEFAULT_SUBDIVISIONS
protected int	faceCount
protected int	subdivisions
protected Angle	wedgeAngle

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

centerPosition, DEFAULT_GEOMETRY_CACHE_SIZE, detailHint, eastWestRadius, GEOMETRY_CACHE_KEY, GEOMETRY_CACHE_NAME, geometryBuilder, heading, imageSources, northSouthRadius, offsets, offsetTextureCoords, previousIntersectionGlobeStateKey, previousIntersectionShapeData, previousIntersectionTerrain, renderExtent, roll, skewEastWest, skewNorthSouth, textures, tilt, verticalRadius

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

activeAttributes, altitudeMode, BEogsh, currentData, DEFAULT_ALTITUDE_MODE, DEFAULT_GEOMETRY_GENERATION_INTERVAL, DEFAULT_HIGHLIGHT_MATERIAL, DEFAULT_INTERIOR_MATERIAL, DEFAULT_OUTLINE_MATERIAL, DEFAULT_OUTLINE_PICK_WIDTH, defaultAttributes, delegateOwner, enableBatchPicking, enableBatchRendering, enableDepthOffset, highlightAttrs, highlighted, maxExpiryTime, minExpiryTime, normalAttrs, outlinePickWidth, outlineShapeRenderer, pickLayer, pickSupport, referencePosition, sector, shapeDataCache, VBO_THRESHOLD, viewDistanceExpiration, visible

Fields inherited from interface gov.nasa.worldwind.Exportable

FORMAT_NOT_SUPPORTED, FORMAT_PARTIALLY_SUPPORTED, FORMAT_SUPPORTED

Constructor Summary

Wedge()
Construct a wedge with default parameters

Wedge(Position centerPosition, Angle angle, double height, double radius)
Constructs a Wedge from a specified center position, height, radius and angle.

Wedge(Position centerPosition, Angle angle, double northSouthRadius, double verticalRadius, double eastWestRadius)
Constructs a wedge from a specified center position and axes lengths.

Wedge(Position centerPosition, Angle angle, double northSouthRadius, double verticalRadius, double eastWestRadius, Angle heading, Angle tilt, Angle roll)
Constructs a wedge from a specified center position, axes lengths and rotation angles.

Method Summary

protected double	computeDetailThreshold() Computes a threshold value, based on the current detailHint, for use in the sufficientDetail() calculation.
protected void	computeSubdivisions(DrawContext dc, RigidShape.ShapeData shapeData) Computes the number of subdivisions necessary to achieve the expected Level of Detail given the shape's relationship to the viewer.
protected RigidShape.ShapeData	createIntersectionGeometry(Terrain terrain)
protected void	doExportAsKML(XMLStreamWriter xmlWriter) Exports shape-specific fields.
protected void	doGetRestorableState(RestorableSupport rs, RestorableSupport.StateObject context)
protected void	doRestoreState(RestorableSupport rs, RestorableSupport.StateObject context)
protected void	drawGeometry(DrawContext dc, int mode, int count, int type, Buffer elementBuffer, RigidShape.ShapeData shapeData, int face) Renders the wedge, using data from the provided buffer and the given parameters.
int	getFaceCount() Returns the number of separate faces that comprise this shape.
int	getSubdivisions()
Angle	getWedgeAngle() Returns the angle covered by this wedge.
protected void	initialize() Called during construction to establish any subclass-specific state such as different default values than those set by this class.
String	isExportFormatSupported(String mimeType) No export formats supported.
protected void	makeGeometry(RigidShape.ShapeData shapeData) Sets the Geometry mesh for this wedge, either by pulling it from the geometryCache, or by creating it anew if the appropriate geometry does not yet exist in the cache.
protected void	makeUnitWedge(int subdivisions, List<Geometry> meshes) Generates a unit wedge geometry, including the vertices, indices, normals and texture coordinates, tessellated with the specified number of divisions.
protected boolean	mustRegenerateGeometry(DrawContext dc) Indicates whether this shape's renderable geometry must be recomputed, either as a result of an attribute or property change or the expiration of the geometry regeneration interval.
void	setWedgeAngle(Angle angle) Specifies the angle covered by the wedge.
protected boolean	sufficientDetail(DrawContext dc, int subdivisions, RigidShape.ShapeData shapeData)

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

beginDrawing, clearCachedVbos, clearIntersectionGeometry, computeExtent, computeReferencePoint, computeReferencePoint, computeRenderMatrix, computeRenderMatrix, computeRenderMatrixInverse, computeTransformedVertices, createCacheEntry, doDrawInterior, doDrawOutline, doMakeOrderedRenderable, drawGeometry, fillVBO, getCenterPosition, getCurrentShapeData, getDetailHint, getEastWestRadius, getExtent, getGeometryBuilder, getGeometryCache, getHeading, getImageSource, getNorthSouthRadius, getOffsets, getReferencePosition, getRestorableState, getRoll, getSector, getSkewEastWest, getSkewNorthSouth, getTexture, getTilt, getVboIds, getVerticalRadius, intersect, intersect, intersect, intersectFace, isOrderedRenderableValid, isSameAsPreviousTerrain, moveTo, mustApplyTexture, mustApplyTexture, reset, restoreState, setCenterPosition, setDetailHint, setEastWestRadius, setFaceCount, setHeading, setImageSource, setImageSources, setImageSources, setModelViewMatrix, setNorthSouthRadius, setOffset, setRoll, setSkewEastWest, setSkewNorthSouth, setTexture, setTilt, setUpGeometryCache, setVerticalRadius

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

addOrderedRenderable, checkViewDistanceExpiration, computeExtentFromPositions, computePoint, countTriangleVertices, createPickedObject, determineActiveAttributes, doDrawOrderedRenderable, drawBatched, drawInterior, drawOrderedRenderable, drawOutline, endDrawing, export, exportAsKML, getActiveAttributes, getAltitudeMode, getAttributes, getCurrentData, getDelegateOwner, getDistanceFromEye, getExtent, getGeometryRegenerationInterval, getHighlightAttributes, getOutlinePickWidth, getReferencePoint, getVboIds, intersectsFrustum, isEnableBatchPicking, isEnableBatchRendering, isEnableDepthOffset, isHighlighted, isTerrainDependent, isViewDistanceExpiration, isVisible, makeOrderedRenderable, makeTexture, move, mustApplyLighting, mustApplyLighting, mustCreateNormals, mustCreateNormals, mustDrawInterior, mustDrawOutline, pick, prepareToDrawInterior, prepareToDrawOutline, render, setAltitudeMode, setAttributes, setDelegateOwner, setEnableBatchPicking, setEnableBatchRendering, setEnableDepthOffset, setGeometryRegenerationInterval, setHighlightAttributes, setHighlighted, setOutlinePickWidth, setReferencePosition, setViewDistanceExpiration, setVisible, shouldUseVBOs

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

Field Detail

DEFAULT_SUBDIVISIONS

protected static final int DEFAULT_SUBDIVISIONS

See Also:

Constant Field Values

faceCount

protected int faceCount

subdivisions

protected int subdivisions

wedgeAngle

protected Angle wedgeAngle

Constructor Detail

Wedge

public Wedge()

Construct a wedge with default parameters

Wedge

public Wedge(Position centerPosition,
             Angle angle,
             double height,
             double radius)

Constructs a Wedge from a specified center position, height, radius and angle.

Parameters:

centerPosition - the Wedge's center position.

height - the Wedge's height, in meters.

radius - the radius of the Wedge's base, in meters.

angle - the angle covered by the wedge

Throws:

IllegalArgumentException - if the center position is null, if the wedgeAngle is null or not in [0, 2*PI], or if any of the radii are not greater than 0.

Wedge

public Wedge(Position centerPosition,
             Angle angle,
             double northSouthRadius,
             double verticalRadius,
             double eastWestRadius)

Constructs a wedge from a specified center position and axes lengths.

Parameters:

centerPosition - the wedge's center position.

angle - the angle covered by the wedge

northSouthRadius - the wedge's north-south radius, in meters.

verticalRadius - the wedge's vertical radius, in meters.

eastWestRadius - the wedge's east-west radius, in meters.

Throws:

IllegalArgumentException - if the center position is null, if the wedgeAngle is null or not in [0, 2*PI], or if any of the radii are not greater than 0.

Wedge

public Wedge(Position centerPosition,
             Angle angle,
             double northSouthRadius,
             double verticalRadius,
             double eastWestRadius,
             Angle heading,
             Angle tilt,
             Angle roll)

Constructs a wedge from a specified center position, axes lengths and rotation angles. All angles are specified in degrees and positive angles are counter-clockwise.

Parameters:

centerPosition - the wedge's center position.

angle - the angle covered by the wedge

northSouthRadius - the wedge's north-south radius, in meters.

verticalRadius - the wedge's vertical radius, in meters.

eastWestRadius - the wedge's east-west radius, in meters.

heading - the wedge's azimuth, its rotation about its vertical axis.

tilt - the wedge pitch, its rotation about its east-west axis.

roll - the wedge's roll, its rotation about its north-south axis.

Throws:

IllegalArgumentException - the centerPosition is null, or if the wedgeAngle is null or not in [0, 2*PI], or if any of the radii are not greater than 0.

Method Detail

computeDetailThreshold

protected double computeDetailThreshold()

Computes a threshold value, based on the current detailHint, for use in the sufficientDetail() calculation.

Returns:

the detailThreshold

computeSubdivisions

protected void computeSubdivisions(DrawContext dc,
                                   RigidShape.ShapeData shapeData)

Computes the number of subdivisions necessary to achieve the expected Level of Detail given the shape's relationship to the viewer.

Specified by:

computeSubdivisions in class RigidShape

Parameters:

dc - the current drawContext.

shapeData - the current globe-specific shape data

createIntersectionGeometry

protected RigidShape.ShapeData createIntersectionGeometry(Terrain terrain)

Specified by:

createIntersectionGeometry in class RigidShape

doExportAsKML

protected void doExportAsKML(XMLStreamWriter xmlWriter)
                      throws IOException,
                             XMLStreamException

Description copied from class: AbstractShape

Exports shape-specific fields.

Specified by:

doExportAsKML in class AbstractShape

Parameters:

xmlWriter - the export writer to write to.

Throws:

IOException - if an IO error occurs while writing to the output destination.

XMLStreamException - if an exception occurs converting this shape's fields to XML.

doGetRestorableState

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

Overrides:

doGetRestorableState in class RigidShape

doRestoreState

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

Overrides:

doRestoreState in class RigidShape

drawGeometry

protected void drawGeometry(DrawContext dc,
                            int mode,
                            int count,
                            int type,
                            Buffer elementBuffer,
                            RigidShape.ShapeData shapeData,
                            int face)

Renders the wedge, using data from the provided buffer and the given parameters.

Specified by:

drawGeometry in class RigidShape

Parameters:

dc - the current draw context

mode - the render mode

count - the number of elements to be drawn

type - the data type of the elements to be drawn

elementBuffer - the buffer containing the list of elements to be drawn

shapeData - this shape's current globe-specific shape data

face - the index of the shape face to render

getFaceCount

public int getFaceCount()

Description copied from class: RigidShape

Returns the number of separate faces that comprise this shape.

Overrides:

getFaceCount in class RigidShape

Returns:

number of faces

getSubdivisions

public int getSubdivisions()

Specified by:

getSubdivisions in class RigidShape

getWedgeAngle

public Angle getWedgeAngle()

Returns the angle covered by this wedge.

Returns:

the angle covered by the wedge.

initialize

protected void initialize()

Description copied from class: AbstractShape

Called during construction to establish any subclass-specific state such as different default values than those set by this class.

Overrides:

initialize in class RigidShape

isExportFormatSupported

public String isExportFormatSupported(String mimeType)

No export formats supported.

Specified by:

isExportFormatSupported in interface Exportable

Overrides:

isExportFormatSupported in class AbstractShape

Parameters:

mimeType - Desired export format.

Returns:

One of Exportable.FORMAT_SUPPORTED, Exportable.FORMAT_NOT_SUPPORTED, or Exportable.FORMAT_PARTIALLY_SUPPORTED.

See Also:

Exportable.export(String, Object)

makeGeometry

protected void makeGeometry(RigidShape.ShapeData shapeData)

Sets the Geometry mesh for this wedge, either by pulling it from the geometryCache, or by creating it anew if the appropriate geometry does not yet exist in the cache.

Specified by:

makeGeometry in class RigidShape

Parameters:

shapeData - this shape's current shape data.

Throws:

IllegalArgumentException - if the wedgeAngle is null

makeUnitWedge

protected void makeUnitWedge(int subdivisions,
                             List<Geometry> meshes)

Generates a unit wedge geometry, including the vertices, indices, normals and texture coordinates, tessellated with the specified number of divisions.

Parameters:

subdivisions - the number of times to subdivide the unit wedge geometry

meshes - the Geometry list to hold the computed points, etc. for all wedge Geometries

Throws:

IllegalArgumentException - if the wedgeAngle is null

mustRegenerateGeometry

protected boolean mustRegenerateGeometry(DrawContext dc)

Description copied from class: AbstractShape

Indicates whether this shape's renderable geometry must be recomputed, either as a result of an attribute or property change or the expiration of the geometry regeneration interval.

A AbstractShape.AbstractShapeData must be current when this method is called.

Overrides:

mustRegenerateGeometry in class RigidShape

Parameters:

dc - the current draw context.

Returns:

true if this shape's geometry must be regenerated, otherwise false.

setWedgeAngle

public void setWedgeAngle(Angle angle)

Specifies the angle covered by the wedge. This angle must fall in [0, 2*PI].

Parameters:

angle - the angle covered by the wedge. Must be in [0, 2*PI].

Throws:

IllegalArgumentException - if the wedgeAngle is null, or is not in [0, 2*PI].

sufficientDetail

protected boolean sufficientDetail(DrawContext dc,
                                   int subdivisions,
                                   RigidShape.ShapeData shapeData)