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

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

All Implemented Interfaces:

AVList, Movable, Highlightable, Renderable, MilStd2525TacticalGraphic, TacticalGraphic

public class DirectionOfAttackAviation
extends DirectionOfAttack

Implementation of the Direction of Attack, Aviation graphic (2.X.2.5.2.2.1).

Field Summary

protected double	bowTieLength Length of the bow tie part of the graphic, as a fraction of the graphic's total length.
protected double	bowTieWidth Width of the bow tie part of the graphic, as a fraction of the length of the bow tie.
protected Angle	curvature Angle that controls the curve of the line.
static double	DEFAULT_BOW_TIE_LENGTH Default length of the bow tie part of the graphic, as a fraction of the graphic's total length.
static double	DEFAULT_BOW_TIE_WIDTH Default width of the bow tie part of the graphic, as a fraction of the length of the bow tie.
static Angle	DEFAULT_CURVATURE Default angle 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.

Fields inherited from class gov.nasa.worldwind.symbology.milstd2525.graphics.lines.DirectionOfAttack

arrowAngle, arrowLength, DEFAULT_ARROWHEAD_ANGLE, DEFAULT_ARROWHEAD_LENGTH, DEFAULT_ARROWHEAD_OUTLINE_WIDTH, endPosition, outlineWidth, paths, startPosition

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

DirectionOfAttackAviation(String sidc)
Create a new arrow graphic.

Method Summary

protected List<Position>	createBowTie(DrawContext dc, Position pos1, Position pos2) Create positions required to to draw the bow tie part of the graphic.
protected void	createLabels()
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.
double	getBowTieLength() Indicates the length of the bow tie part of the graphic, as a fraction of the graphic's total length.
double	getBowTieWidth() Indicates the width of the bow tie part of the graphic, as a fraction of the length of the bow tie.
Angle	getCurvature() Indicates the angle that determines the curvature of the line.
int	getIntervals() Indicates the number of intervals used to draw the curve in this graphic.
static List<String>	getSupportedGraphics() Indicates the graphics supported by this class.
protected Vec4	hermiteCurve(Vec4 pt1, Vec4 pt2, Vec4 tangent1, Vec4 tangent2, double t) Compute a point along a Hermite curve defined by two control point and tangent vectors at those points.
protected void	onShapeChanged()
void	setBowTieLength(double bowTieLength) Specifies the length of the bow tie part of the graphic, as a fraction of the graphic's total length.
void	setBowTieWidth(double bowTieWidth) Specifies the width of the bow tie part of the graphic, as a fraction of the length of the bow tie.
void	setCurvature(Angle angle) Specifies the angle that determines the curvature of the line.
void	setIntervals(int intervals) Specifies the number of intervals used to draw the curve in this graphic.

Methods inherited from class gov.nasa.worldwind.symbology.milstd2525.graphics.lines.DirectionOfAttack

applyDelegateOwner, computeArrowheadPositions, computeGeometry, createPath, doRenderGraphic, getArrowAngle, getArrowLength, getOutlineWidth, getPositions, getReferencePosition, isDrawOutlined, setArrowAngle, setArrowLength, setOutlineWidth, setPositions

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, computeLabelInteriorOpacity, determineActiveAttributes, determineDelegateOwner, 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

bowTieLength

protected double bowTieLength

Length of the bow tie part of the graphic, as a fraction of the graphic's total length.

bowTieWidth

protected double bowTieWidth

Width of the bow tie part of the graphic, as a fraction of the length of the bow tie.

curvature

protected Angle curvature

Angle that controls the curve of the line. A large angle results in a more pronounced curve. An angle of zero results in a straight line.

DEFAULT_BOW_TIE_LENGTH

public static final double DEFAULT_BOW_TIE_LENGTH

Default length of the bow tie part of the graphic, as a fraction of the graphic's total length.

See Also:

Constant Field Values

DEFAULT_BOW_TIE_WIDTH

public static final double DEFAULT_BOW_TIE_WIDTH

Default width of the bow tie part of the graphic, as a fraction of the length of the bow tie.

See Also:

Constant Field Values

DEFAULT_CURVATURE

public static final Angle DEFAULT_CURVATURE

Default angle that determines the curvature of the line.

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.

Constructor Detail

DirectionOfAttackAviation

public DirectionOfAttackAviation(String sidc)

Create a new arrow graphic.

Parameters:

sidc - Symbol code the identifies the graphic.

Method Detail

createBowTie

protected List<Position> createBowTie(DrawContext dc,
                                      Position pos1,
                                      Position pos2)

Create positions required to to draw the bow tie part of the graphic.

Parameters:

dc - Current draw context.

pos1 - Position at the center of one side of the bow tie.

pos2 - Position at the center of the other side of the bow tie.

Returns:

Positions that describe the bow tie.

createLabels

protected void createLabels()

Overrides:

createLabels in class AbstractTacticalGraphic

createShapes

protected void createShapes(DrawContext dc)

Create the list of positions that describe the arrow.

Overrides:

createShapes in class DirectionOfAttack

Parameters:

dc - Current draw context.

determineLabelPositions

protected void determineLabelPositions(DrawContext dc)

Description copied from class: AbstractTacticalGraphic

Determine positions for the start and end labels.

Overrides:

determineLabelPositions in class AbstractTacticalGraphic

Parameters:

dc - Current draw context.

getBowTieLength

public double getBowTieLength()

Indicates the length of the bow tie part of the graphic, as a fraction of the graphic's total length.

Returns:

Length of the bow tie as a fraction of the total length of the graphic.

getBowTieWidth

public double getBowTieWidth()

Indicates the width of the bow tie part of the graphic, as a fraction of the length of the bow tie.

Returns:

Width of the bow tie as a fraction of the length of the bow tie.

getCurvature

public Angle getCurvature()

Indicates the angle that determines the curvature of the line. A large angle results in a more pronounced curve. An angle of zero results in a straight line.

Returns:

The angle 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.

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.

hermiteCurve

protected Vec4 hermiteCurve(Vec4 pt1,
                            Vec4 pt2,
                            Vec4 tangent1,
                            Vec4 tangent2,
                            double t)

Compute a point along a Hermite curve defined by two control point and tangent vectors at those points.

This function implements the Hermite curve equation from "Mathematics for 3D Game Programming and Computer Graphics, Second Edition" by Eric Lengyel (equation 15.15, pg. 457).

H(t) = (1 - 3t² + 2t³)P₁ + t²(3 - 2t)P₂ + t(t - 1)²T₁ + t²(t - 1)T₂

Parameters:

pt1 - First control point.

pt2 - Second control point.

tangent1 - Vector tangent to the curve at the first control point.

tangent2 - Vector tangent to the curve at the second control point.

t - Interpolation parameter in the range [0..1].

Returns:

A point along the curve.

onShapeChanged

protected void onShapeChanged()

setBowTieLength

public void setBowTieLength(double bowTieLength)

Specifies the length of the bow tie part of the graphic, as a fraction of the graphic's total length.

Parameters:

bowTieLength - Length of the bow tie as a fraction of the total length of the graphic.

setBowTieWidth

public void setBowTieWidth(double bowTieWidth)

Specifies the width of the bow tie part of the graphic, as a fraction of the length of the bow tie.

Parameters:

bowTieWidth - Width of the bow tie as a fraction of the length of the bow tie.

setCurvature

public void setCurvature(Angle angle)

Specifies the angle that determines the curvature of the line. A large angle results in a more pronounced curve. An angle of zero results in a straight line.

Parameters:

angle - The angle 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.