gov.nasa.worldwind.symbology.milstd2525.graphics.lines

Class InfiltrationLane

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.lines.InfiltrationLane

All Implemented Interfaces:

AVList, Draggable, Movable, Highlightable, Renderable, MilStd2525TacticalGraphic, TacticalGraphic

public class InfiltrationLane
extends AbstractMilStd2525TacticalGraphic

Implementation of the Infiltration Lane graphic (2.X.2.5.2.4).

Field Summary

Fields

Modifier and Type	Field and Description
protected double	curvature Factor that controls the curve of the line.
static double	DEFAULT_CURVATURE Default factor that determines the curvature of the line.
static int	DEFAULT_NUM_INTERVALS Default number of intervals used to draw the curve.
protected int	intervals Number of intervals used to draw the curve.
protected static int	NUM_CONTROL_POINTS Number of control points that define the curve.
protected Path[]	paths Path used to render the line.
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, dragEnabled, draggableSupport, frameTimestamp, highlightAttributes, highlighted, labelOffset, labels, modifiers, mustCreateLabels, normalAttributes, showGraphicModifiers, showHostileIndicator, showLocation, showTextModifiers, text, unitsFormat, visible

Constructor Summary

Constructors

Constructor and Description
InfiltrationLane(String sidc) Create a new arrow graphic.

Method Summary

Modifier and Type	Method and Description
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 Vec4	bezierNearestPointToSegment(Vec4 p0, Vec4 p1, Vec4[] controlPoints, int[] coefficients, double tolerance) Determine the point along a Bezier curve that is closest to a line segment.
protected Vec4[]	computeBezierControlPoints(DrawContext dc, Vec4 start, Vec4 end, int numControlPoints, double curvature) Compute the position of control points that will generate a Bezier curve that looks like the Infiltration Lane graphic in MIL-STD-2525C (pg.
protected void	createLabels() Create labels for the start and end of the path.
protected Path	createPath(List<Position> positions) Create and configure the Path used to render this graphic.
protected void	createShapes(DrawContext dc) Create the list of positions that describe the arrow.
protected void	determineLabelPositions(DrawContext dc) Determine positions for the start and end labels.
protected void	doRenderGraphic(DrawContext dc) Render this graphic, without modifiers.
double	getCurvature() Indicates a factor that determines the curvature of the line.
int	getIntervals() Indicates the number of intervals used to draw the curve in this graphic.
protected int	getNumControlPoints() Indicates the number of control points that define the curve.
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	setCurvature(double factor) Specifies a factor that determines the curvature of the line.
void	setIntervals(int intervals) Specifies the number of intervals used to draw the curve in this graphic.
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, determineActiveAttributes, determineDelegateOwner, determinePerFrameAttributes, doDrag, doRenderGraphicModifiers, doRenderTextModifiers, drag, getActiveDelegateOwner, getActiveOverrideAttributes, getActiveShapeAttributes, getAttributes, getDefaultLabelOffset, getDelegateOwner, getHighlightAttributes, getLabelMaterial, getLabelOffset, getUnitsFormat, isDragEnabled, isHighlighted, isShowGraphicModifiers, isShowHostileIndicator, isShowLocation, isShowTextModifiers, isVisible, move, moveTo, onModifierChanged, render, setAttributes, setDelegateOwner, setDragEnabled, 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

curvature

protected double curvature

Factor that controls the curve of the line. Valid values are 0 to 1. Larger values result in a more pronounced curve.

DEFAULT_CURVATURE

public static final double DEFAULT_CURVATURE

Default factor that determines the curvature of the line.

See Also:

Constant Field Values

DEFAULT_NUM_INTERVALS

public static final int DEFAULT_NUM_INTERVALS

Default number of intervals used to draw the curve.

See Also:

Constant Field Values

intervals

protected int intervals

Number of intervals used to draw the curve.

NUM_CONTROL_POINTS

protected static final int NUM_CONTROL_POINTS

Number of control points that define the curve.

See Also:

Constant Field Values

paths

protected Path[] paths

Path used to render the line.

position1

protected Position position1

First control point.

position2

protected Position position2

Second control point.

position3

protected Position position3

Third control point.

Constructor Detail

InfiltrationLane

public InfiltrationLane(String sidc)

Create a new arrow 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.

bezierNearestPointToSegment

protected Vec4 bezierNearestPointToSegment(Vec4 p0,
                                           Vec4 p1,
                                           Vec4[] controlPoints,
                                           int[] coefficients,
                                           double tolerance)

Determine the point along a Bezier curve that is closest to a line segment.

Parameters:

p0 - First line segment point.

p1 - Second line segment point.

controlPoints - Control points for Bezier curve.

coefficients - Binomial coefficients for computing curve.

tolerance - Numerical tolerance. Smaller values will yield a more accurate answer, but will take more iterations to compute.

Returns:

the point on the curve that is closest to the specified line segment.

computeBezierControlPoints

protected Vec4[] computeBezierControlPoints(DrawContext dc,
                                            Vec4 start,
                                            Vec4 end,
                                            int numControlPoints,
                                            double curvature)

Compute the position of control points that will generate a Bezier curve that looks like the Infiltration Lane graphic in MIL-STD-2525C (pg. 526).

Parameters:

dc - Current draw context.

start - Beginning of the infiltration lane control line.

end - End of the infiltration lane control line.

numControlPoints - Number of control points to generate. More control points result in more "wiggles" in the line.

curvature - Factor that controls the curvature of the line. Valid values are between zero and one. A higher value results in a more pronounced curve.

Returns:

Control points for a Bezier curve. The first control point is equal to start, and the last point is equal to end.

createLabels

protected void createLabels()

Create labels for the start and end of the path.

Overrides:

createLabels in class AbstractTacticalGraphic

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 list of positions that describe the arrow.

Parameters:

dc - Current draw context.

determineLabelPositions

protected void determineLabelPositions(DrawContext dc)

Determine positions for the start and end labels.

Overrides:

determineLabelPositions in class AbstractTacticalGraphic

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)

getCurvature

public double getCurvature()

Indicates a factor that determines the curvature of the line. Valid values are zero to one. A large value results in a more pronounced curve.

Returns:

The factor that determines the curvature of the line.

getIntervals

public int getIntervals()

Indicates the number of intervals used to draw the curve in this graphic. More intervals results in a smoother curve.

Returns:

Intervals used to draw arc.

getNumControlPoints

protected int getNumControlPoints()

Indicates the number of control points that define the curve.

Returns:

the number of control points.

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()

setCurvature

public void setCurvature(double factor)

Specifies a factor that determines the curvature of the line. Valid values are zero to one. A large value results in a more pronounced curve.

Parameters:

factor - The factor that determines the curvature of the line.

setIntervals

public void setIntervals(int intervals)

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

Parameters:

intervals - Number of intervals for drawing the curve.

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.