gov.nasa.worldwind.symbology.milstd2525.graphics.areas
Class Ambush

java.lang.Object
  gov.nasa.worldwind.avlist.AVListImpl
      gov.nasa.worldwind.symbology.AbstractTacticalGraphic
          gov.nasa.worldwind.symbology.milstd2525.AbstractMilStd2525TacticalGraphic
              gov.nasa.worldwind.symbology.milstd2525.graphics.areas.Ambush

All Implemented Interfaces:

AVList, Movable, Highlightable, Renderable, MilStd2525TacticalGraphic, TacticalGraphic

public class Ambush
extends AbstractMilStd2525TacticalGraphic

Implementation of the Ambush graphic (2.X.2.6.1.1).

Nested Class Summary

protected static class

Ambush.ArcData Data required for intermediate calculations while generating the Ambush graphic.

Field Summary

protected Angle	arcAngle The arc is drawn as a segment of a circle intersected by this angle.
protected Angle	arrowAngle Length of the arrowhead from base to tip, as a fraction of the total line length.
protected double	arrowLength Angle of the arrowhead.
static Angle	DEFAULT_ARC_ANGLE Default angle of the arc.
static Angle	DEFAULT_ARROWHEAD_ANGLE Default angle of the arrowhead.
static double	DEFAULT_ARROWHEAD_LENGTH Default length of the arrowhead, as a fraction of the total line length.
static double	DEFAULT_LEG_LENGTH Default length of the legs of the graphic's base, as a fraction of the distance between the control points the define the base.
static int	DEFAULT_NUM_INTERVALS Default number of intervals used to draw the arc.
static int	DEFAULT_NUM_LEGS Default number of legs to draw on the graphic's arc.
protected int	intervals Number of intervals used to draw the arc.
protected double	legLength Length of the legs on the graphic's base, as a fraction of the distance between the control points that define the base.
protected int	numLegs Number of "legs" drawn on this graphic's arc.
protected Path[]	paths Path used to render the graphic.
protected Position	position1 First control point.
protected Position	position2 Second control point.
protected Position	position3 Third control point.

Fields inherited from class gov.nasa.worldwind.symbology.milstd2525.AbstractMilStd2525TacticalGraphic

maskedSymbolCode, OUTLINE_STIPPLE_FACTOR_ANTICIPATED, OUTLINE_STIPPLE_FACTOR_PRESENT, OUTLINE_STIPPLE_PATTERN, symbolCode

Fields inherited from class gov.nasa.worldwind.symbology.AbstractTacticalGraphic

activeOverrides, activeShapeAttributes, DEFAULT_HIGHLIGHT_MATERIAL, DEFAULT_LABEL_INTERIOR_OPACITY, delegateOwner, frameTimestamp, highlightAttributes, highlighted, labelOffset, labels, modifiers, mustCreateLabels, normalAttributes, showGraphicModifiers, showHostileIndicator, showLocation, showTextModifiers, text, unitsFormat, visible

Constructor Summary

Ambush(String sidc)
Create a new graphic.

Method Summary

protected void	applyDelegateOwner(Object owner) Invoked each frame to apply to the current delegate owner to all renderable objects used to draw the graphic.
protected Ambush.ArcData	computeArc(DrawContext dc) Compute the arc.
protected List<Position>	computeArcPositions(DrawContext dc, Ambush.ArcData arcData) Compute positions required to draw the arc.
protected List<Position>	computeArrowheadPositions(DrawContext dc, Position tip, Ambush.ArcData arcData) Determine the positions that make up the arrowhead.
protected void	createLegs(DrawContext dc, Ambush.ArcData arcData, Path[] paths, int startIndex, int pathCount) Create paths for the graphic's "legs".
protected Path	createPath(List<Position> positions) Create and configure the Path used to render this graphic.
protected void	createShapes(DrawContext dc) Create the paths required to draw the graphic.
protected void	doRenderGraphic(DrawContext dc) Render this graphic, without modifiers.
Angle	getArcAngle() Indicates the angle of this graphic's arc.
Angle	getArrowAngle() Indicates the angle of the arrowhead.
double	getArrowLength() Indicates the length of the arrowhead.
int	getIntervals() Indicates the number of intervals used to draw the arc in this graphic.
double	getLegLength() Indicates the length of legs on the graphic's base.
int	getLegs() Indicates how many "legs" stick out of the back side of this graphic's arc.
Iterable<? extends Position>	getPositions() Indicates the positions of the control points that place and orient the graphic.
Position	getReferencePosition() A position associated with the object that indicates its aggregate geographic position.
static List<String>	getSupportedGraphics() Indicates the graphics supported by this class.
protected void	onShapeChanged()
void	setArcAngle(Angle arcAngle) Specifies the angle of this graphic's arc.
void	setArrowAngle(Angle arrowAngle) Specifies the angle of the arrowhead in the graphic.
void	setArrowLength(double arrowLength) Specifies the length of the arrowhead.
void	setIntervals(int intervals) Specifies the number of intervals used to draw the arc in this graphic.
void	setLegLength(double legLength) Specifies the length of the legs on the graphic's base.
void	setLegs(int numLegs) Specifies how many "legs" stick out of the back side of this graphic's arc.
void	setPositions(Iterable<? extends Position> positions) Specifies the positions of the control points that place and orient the graphic.

Methods inherited from class gov.nasa.worldwind.symbology.milstd2525.AbstractMilStd2525TacticalGraphic

applyDefaultAttributes, createSymbol, getDefaultMaterial, getIdentifier, getModifier, getOutlineStippleFactor, getOutlineStipplePattern, getStatus, getText, mustShowHostileIndicator, setModifier, setStatus

Methods inherited from class gov.nasa.worldwind.symbology.AbstractTacticalGraphic

addLabel, applyLabelAttributes, applyOverrideAttributes, computeGeometry, computeLabelInteriorOpacity, createLabels, determineActiveAttributes, determineDelegateOwner, determineLabelPositions, determinePerFrameAttributes, doRenderGraphicModifiers, doRenderTextModifiers, getActiveDelegateOwner, getActiveOverrideAttributes, getActiveShapeAttributes, getAttributes, getDefaultLabelOffset, getDelegateOwner, getHighlightAttributes, getLabelMaterial, getLabelOffset, getUnitsFormat, isHighlighted, isShowGraphicModifiers, isShowHostileIndicator, isShowLocation, isShowTextModifiers, isVisible, move, moveTo, onModifierChanged, render, setAttributes, setDelegateOwner, setHighlightAttributes, setHighlighted, setLabelOffset, setShowGraphicModifiers, setShowHostileIndicator, setShowLocation, setShowTextModifiers, setText, setUnitsFormat, setVisible

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.symbology.TacticalGraphic

getAttributes, getDelegateOwner, getHighlightAttributes, getLabelOffset, getUnitsFormat, isShowGraphicModifiers, isShowHostileIndicator, isShowLocation, isShowTextModifiers, isVisible, setAttributes, setDelegateOwner, setHighlightAttributes, setLabelOffset, setShowGraphicModifiers, setShowHostileIndicator, setShowLocation, setShowTextModifiers, setText, setUnitsFormat, setVisible

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

render

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

isHighlighted, setHighlighted

Methods inherited from interface gov.nasa.worldwind.Movable

move, moveTo

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

arcAngle

protected Angle arcAngle

The arc is drawn as a segment of a circle intersected by this angle.

arrowAngle

protected Angle arrowAngle

Length of the arrowhead from base to tip, as a fraction of the total line length.

arrowLength

protected double arrowLength

Angle of the arrowhead.

DEFAULT_ARC_ANGLE

public static final Angle DEFAULT_ARC_ANGLE

Default angle of the arc. Control points 2 and 3 define a chord of a circle. This chord and the arc angle fully define the circle, of which the arc is a segment.

DEFAULT_ARROWHEAD_ANGLE

public static final Angle DEFAULT_ARROWHEAD_ANGLE

Default angle of the arrowhead.

DEFAULT_ARROWHEAD_LENGTH

public static final double DEFAULT_ARROWHEAD_LENGTH

Default length of the arrowhead, as a fraction of the total line length.

See Also:

Constant Field Values

DEFAULT_LEG_LENGTH

public static final double DEFAULT_LEG_LENGTH

Default length of the legs of the graphic's base, as a fraction of the distance between the control points the define the base.

See Also:

Constant Field Values

DEFAULT_NUM_INTERVALS

public static final int DEFAULT_NUM_INTERVALS

Default number of intervals used to draw the arc.

See Also:

Constant Field Values

DEFAULT_NUM_LEGS

public static final int DEFAULT_NUM_LEGS

Default number of legs to draw on the graphic's arc.

See Also:

Constant Field Values

intervals

protected int intervals

Number of intervals used to draw the arc.

legLength

protected double legLength

Length of the legs on the graphic's base, as a fraction of the distance between the control points that define the base.

numLegs

protected int numLegs

Number of "legs" drawn on this graphic's arc.

paths

protected Path[] paths

Path used to render the graphic.

position1

protected Position position1

First control point.

position2

protected Position position2

Second control point.

position3

protected Position position3

Third control point.

Constructor Detail

Ambush

public Ambush(String sidc)

Create a new graphic.

Parameters:

sidc - Symbol code the identifies the graphic.

Method Detail

applyDelegateOwner

protected void applyDelegateOwner(Object owner)

Invoked each frame to apply to the current delegate owner to all renderable objects used to draw the graphic. This base class will apply the delegate owner to Label objects. Subclasses must implement this method to apply the delegate owner to any Renderables that they will draw in order to render the graphic.

Specified by:

applyDelegateOwner in class AbstractTacticalGraphic

Parameters:

owner - Current delegate owner.

computeArc

protected Ambush.ArcData computeArc(DrawContext dc)

Compute the arc. The arc is a segment of a circle defined by a chord and the arc angle. Control points 2 and 3 define the chord.

Parameters:

dc - Current draw context.

Returns:

Data that describes the arc.

computeArcPositions

protected List<Position> computeArcPositions(DrawContext dc,
                                             Ambush.ArcData arcData)

Compute positions required to draw the arc.

Parameters:

dc - Current draw context.

arcData - Data that describes the arc.

Returns:

Positions along the arc.

computeArrowheadPositions

protected List<Position> computeArrowheadPositions(DrawContext dc,
                                                   Position tip,
                                                   Ambush.ArcData arcData)

Determine the positions that make up the arrowhead.

Parameters:

dc - Current draw context.

tip - Position of the arrow head tip.

arcData - Data that describes the arc of this graphic.

Returns:

Positions that define the arrowhead.

createLegs

protected void createLegs(DrawContext dc,
                          Ambush.ArcData arcData,
                          Path[] paths,
                          int startIndex,
                          int pathCount)

Create paths for the graphic's "legs". The legs stick out of the back side of the arc.

Parameters:

dc - Current draw context.

arcData - Data that describes the graphic's arc.

paths - Array to receive the new paths.

startIndex - Index into paths at which to place the first leg path.

pathCount - Number of leg paths to create. The paths array must have length of at least startIndex + pathCount.

createPath

protected Path createPath(List<Position> positions)

Create and configure the Path used to render this graphic.

Parameters:

positions - Positions that define the path.

Returns:

New path configured with defaults appropriate for this type of graphic.

createShapes

protected void createShapes(DrawContext dc)

Create the paths required to draw the graphic.

Parameters:

dc - Current draw context.

doRenderGraphic

protected void doRenderGraphic(DrawContext dc)

Render this graphic, without modifiers.

Specified by:

doRenderGraphic in class AbstractTacticalGraphic

Parameters:

dc - Current draw context.

See Also:

AbstractTacticalGraphic.doRenderTextModifiers(gov.nasa.worldwind.render.DrawContext), AbstractTacticalGraphic.doRenderGraphicModifiers(gov.nasa.worldwind.render.DrawContext)

getArcAngle

public Angle getArcAngle()

Indicates the angle of this graphic's arc. The arc is drawn as a segment of a circle defined by this angle and the chord formed by control points 2 and 3.

Returns:

Angle of the circular segment that forms this graphic's arc.

getArrowAngle

public Angle getArrowAngle()

Indicates the angle of the arrowhead.

Returns:

Angle of the arrowhead in the graphic.

getArrowLength

public double getArrowLength()

Indicates the length of the arrowhead.

Returns:

The length of the arrowhead as a fraction of the total line length.

getIntervals

public int getIntervals()

Indicates the number of intervals used to draw the arc in this graphic.

Returns:

Intervals used to draw arc.

getLegLength

public double getLegLength()

Indicates the length of legs on the graphic's base.

Returns:

The length of the legs on the base, as a fraction of the distance between the control points that define the base.

getLegs

public int getLegs()

Indicates how many "legs" stick out of the back side of this graphic's arc.

Returns:

Number of legs drawn on the arc of this graphic.

getPositions

public Iterable<? extends Position> getPositions()

Indicates the positions of the control points that place and orient the graphic.

Returns:

positions that orient the graphic. How many positions are returned depends on the type of graphic. Some graphics require only a single position, others require many.

getReferencePosition

public Position getReferencePosition()

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

Returns:

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

getSupportedGraphics

public static List<String> getSupportedGraphics()

Indicates the graphics supported by this class.

Returns:

List of masked SIDC strings that identify graphics that this class supports.

onShapeChanged

protected void onShapeChanged()

setArcAngle

public void setArcAngle(Angle arcAngle)

Specifies the angle of this graphic's arc. The arc is drawn as a segment of a circle defined by this angle and the chord formed by control points 2 and 3. A greater angle makes the arc more curved and a smaller angle makes the arc less curved.

Parameters:

arcAngle - Angle of the circular segment that forms this graphic's arc.

setArrowAngle

public void setArrowAngle(Angle arrowAngle)

Specifies the angle of the arrowhead in the graphic.

Parameters:

arrowAngle - The angle of the arrowhead. Must be greater than zero degrees and less than 90 degrees.

setArrowLength

public void setArrowLength(double arrowLength)

Specifies the length of the arrowhead.

Parameters:

arrowLength - Length of the arrowhead as a fraction of the total line length. If the arrowhead length is 0.25, then the arrowhead length will be one quarter of the total line length.

setIntervals

public void setIntervals(int intervals)

Specifies the number of intervals used to draw the arc in this graphic. More intervals will result in a smoother looking arc.

Parameters:

intervals - Number of intervals for drawing the arc.

setLegLength

public void setLegLength(double legLength)

Specifies the length of the legs on the graphic's base.

Parameters:

legLength - Length of the legs on the graphic's base, as a fraction of the distance between the control points that define the base.

setLegs

public void setLegs(int numLegs)

Specifies how many "legs" stick out of the back side of this graphic's arc.

Parameters:

numLegs - Number of legs to draw on the arc of this graphic.

setPositions

public void setPositions(Iterable<? extends Position> positions)

Specifies the positions of the control points that place and orient the graphic.

Parameters:

positions - Control points that orient the graphic. Must provide at least three points.