gov.nasa.worldwind.util.measure

Class MeasureTool

java.lang.Object

gov.nasa.worldwind.avlist.AVListImpl

gov.nasa.worldwind.util.measure.MeasureTool

All Implemented Interfaces:

AVList, Disposable

public class MeasureTool
extends AVListImpl
implements Disposable

A utility class to interactively draw shapes and measure distance and area across the terrain. When armed, the class monitors mouse events to allow the definition of a measure shape that can be one of SHAPE_LINE, SHAPE_PATH, SHAPE_POLYGON, SHAPE_CIRCLE, SHAPE_ELLIPSE, SHAPE_SQUARE or SHAPE_QUAD.

In order to allow user interaction with the measuring shape, a controller must be set by calling setController(MeasureToolController) with a new instance of a MeasureToolController.

The interaction sequence for drawing a shape and measuring is as follows:

• Set the measure shape.
• Arm the MeasureTool object by calling its setArmed(boolean) method with an argument of true.
• Click on the terrain to add points.
• Disarm the MeasureTool object by calling its setArmed(boolean) method with an argument of false.
• Read the measured length or area by calling the MeasureTool getLength() or getArea() method. Note that the length and area can be queried at any time during or after the process.

While entering points or after the measure tool has been disarmed, dragging the control points allow to change the initial points positions and alter the measure shape.

While the MeasureTool is armed, pressing and immediately releasing mouse button one while also pressing the control key (Ctl) removes the last point entered. Once the MeasureTool is disarmed, a measure shape of type SHAPE_POLYGON can be moved by dragging a control point while pressing the alt/option key.

Arming and disarming the MeasureTool does not change the contents or attributes of the measure tool's layer. Note that the measure tool will NOT disarm itself after the second point of a line or a regular shape has been entered - the MeasureToolController has that responsibility.

Setting the measure shape from the application

The application can set the measure shape to an arbitrary list of positions using setPositions(java.util.ArrayList). If the provided list contains two positions, the measure shape will be set to SHAPE_LINE. If more then two positions are provided, the measure shape will be set to SHAPE_PATH if the last position differs from the first (open path), or SHAPE_POLYGON if the path is closed.

The application can also set the measure shape to a predefined regular shape by calling setMeasureShapeType(String, Position, double, double, Angle), providing a shape type (one of SHAPE_CIRCLE, SHAPE_ELLIPSE, SHAPE_SQUARE or SHAPE_QUAD), a center position, a width, a height (in meters) and a heading angle.

Finally, the application can use an existing Polyline or SurfaceShape by using setMeasureShape(Polyline) or setMeasureShape(SurfaceShape). The surface shape can be one of SurfacePolyline, SurfacePolygon, SurfaceQuad, SurfaceSquare, SurfaceEllipse or SurfaceCircle.

Measuring

The application can read the measured length or area by calling the MeasureTool getLength() or getArea() method. These methods will return -1 when no value is available.

Regular shapes are defined by a center position, a width a height and a heading angle. Those attributes can be accessed by calling the getCenterPosition(), getWidth(), getHeight() and getOrientation() methods.

The measurements are displayed in units specified in the measure tool's UnitsFormat object. Access to the units format is via the method getUnitsFormat().

Events

The MeasureTool will send events on several occasions: when the position list has changed - EVENT_POSITION_ADD, EVENT_POSITION_REMOVE or EVENT_POSITION_REPLACE, when metrics has changed EVENT_METRIC_CHANGED or when the tool is armed or disarmed EVENT_ARMED.

Events will also be fired at the start and end of a rubber band operation during shape creation: EVENT_RUBBERBAND_START and EVENT_RUBBERBAND_STOP.

See MeasureToolPanel for some events usage.

Several instances of this class can be used simultaneously. However, each instance should be disposed of after usage by calling the dispose() method.

See Also:

MeasureToolController

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MeasureTool.ControlPoint
protected static class	MeasureTool.ControlPointWithLeader
protected static class	MeasureTool.CustomRenderableLayer

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ACCUMULATED_LABEL
static java.lang.String	ANGLE_LABEL
protected ScreenAnnotation	annotation
protected AnnotationAttributes	annotationAttributes
protected RenderableLayer	applicationLayer
static java.lang.String	AREA_LABEL
static java.lang.String	CENTER_LATITUDE_LABEL
static java.lang.String	CENTER_LONGITUDE_LABEL
static java.lang.String	CONTROL_TYPE_LEADER_ORIGIN
static java.lang.String	CONTROL_TYPE_LOCATION_INDEX
static java.lang.String	CONTROL_TYPE_REGULAR_SHAPE
protected MeasureToolController	controller
protected java.util.ArrayList<Renderable>	controlPoints
protected AnnotationAttributes	controlPointsAttributes
protected MeasureTool.CustomRenderableLayer	controlPointsLayer
protected AnnotationAttributes	controlPointWithLeaderAttributes
static java.lang.String	EVENT_ARMED
static java.lang.String	EVENT_METRIC_CHANGED
static java.lang.String	EVENT_POSITION_ADD
static java.lang.String	EVENT_POSITION_REMOVE
static java.lang.String	EVENT_POSITION_REPLACE
static java.lang.String	EVENT_RUBBERBAND_START
static java.lang.String	EVENT_RUBBERBAND_STOP
protected java.awt.Color	fillColor
protected boolean	followTerrain
static java.lang.String	HEADING_LABEL
static java.lang.String	HEIGHT_LABEL
static java.lang.String	LATITUDE_LABEL
protected MeasureTool.CustomRenderableLayer	layer
protected ShapeAttributes	leaderAttributes
static java.lang.String	LENGTH_LABEL
protected gov.nasa.worldwind.render.Polyline	line
protected java.awt.Color	lineColor
protected double	lineWidth
static java.lang.String	LONGITUDE_LABEL
static java.lang.String	MAJOR_AXIS_LABEL
protected static int	MAX_SHAPE_MOVE_ITERATIONS
protected java.lang.String	measureShapeType
static java.lang.String	MINOR_AXIS_LABEL
protected java.lang.String	pathType
static java.lang.String	PERIMETER_LABEL
protected java.util.ArrayList<Position>	positions
static java.lang.String	RADIUS_LABEL
static java.lang.String	SHAPE_CIRCLE
protected static double	SHAPE_CONTROL_EPSILON_METERS
static java.lang.String	SHAPE_ELLIPSE
static java.lang.String	SHAPE_LINE
protected static double	SHAPE_MIN_HEIGHT_METERS
protected static double	SHAPE_MIN_WIDTH_METERS
static java.lang.String	SHAPE_PATH
static java.lang.String	SHAPE_POLYGON
static java.lang.String	SHAPE_QUAD
static java.lang.String	SHAPE_SQUARE
protected Position	shapeCenterPosition
protected int	shapeIntervals
protected MeasureTool.CustomRenderableLayer	shapeLayer
protected Angle	shapeOrientation
protected java.awt.geom.Rectangle2D.Double	shapeRectangle
protected boolean	showAnnotation
protected boolean	showControlPoints
protected SurfaceShape	surfaceShape
protected UnitsFormat	unitsFormat
static java.lang.String	WIDTH_LABEL
protected WorldWindow	wwd

Constructor Summary

Constructors

Constructor and Description
MeasureTool(WorldWindow wwd) Construct a new measure tool drawing events from the specified WorldWindow.
MeasureTool(WorldWindow wwd, RenderableLayer applicationLayer) Construct a new measure tool drawing events from the specified WorldWindow and using the given RenderableLayer.

Method Summary

Modifier and Type	Method and Description
Position	addControlPoint() Add a control point to the current measure shape at the current WorldWindow position.
protected void	addControlPoint(Position position, java.lang.String key, java.lang.Object value)
protected void	addControlPointWithLeader(Position position, java.lang.String controlKey, java.lang.Object control, java.lang.String leaderKey, java.lang.Object leader)
protected boolean	areLocationsRedundant(LatLon locA, LatLon locB)
void	clear() Removes all positions from the shape, clear attributes.
protected java.lang.Double	computeAccumulatedLength(LatLon pos)
protected Angle	computeAngleBetween(LatLon a, LatLon b, LatLon c)
protected Angle	computeControlPointAzimuth(java.lang.String control, double width, double height)
protected Angle	computeControlPointAzimuthInShapeCoordinates(java.lang.String control, Angle azimuth)
protected LatLon	computeControlPointLocation(java.lang.String control, Globe globe, Angle heading, LatLon center, double width, double height)
protected Angle	computeControlPointPathLength(java.lang.String control, double width, double height, double globeRadius)
protected java.lang.String	computeCornerControl(Position position)
protected static Angle	computeNormalizedHeading(Angle heading)
protected double	computePathLength()
protected LatLon	computeQuadEdgeMidpointLocation(java.lang.String control, Globe globe, Angle heading, LatLon center, double width, double height)
protected Position	computeSurfacePosition(LatLon latLon)
protected MeasureTool.CustomRenderableLayer	createCustomRenderableLayer()
void	dispose() Disposes of any internal resources allocated by the object.
protected void	doAddControlPoint(MeasureTool.ControlPoint controlPoint)
protected java.lang.String	formatCircleMeasurements(Position pos)
protected java.lang.String	formatEllipseMeasurements(Position pos)
protected java.lang.String	formatLineMeasurements(Position pos)
protected java.lang.String	formatPolygonMeasurements(Position pos)
protected java.lang.String	formatQuadMeasurements(Position pos)
protected java.lang.String	formatSquareMeasurements(Position pos)
AnnotationAttributes	getAnnotationAttributes() Get the attributes associated with the tool tip annotation.
RenderableLayer	getApplicationLayer() Returns the application layer passed to the constructor.
double	getArea()
Position	getCenterPosition()
MeasureToolController	getController() Get the MeasureToolController for this measure tool.
MeasureTool.ControlPoint	getControlPoint(java.lang.String control)
java.util.ArrayList<Renderable>	getControlPoints() Get the list of control points associated with the current measure shape.
AnnotationAttributes	getControlPointsAttributes() Get the attributes associated with the control points.
protected java.lang.String	getDisplayString(Position pos)
java.awt.Color	getFillColor()
double	getHeight()
java.lang.String	getLabel(java.lang.String labelName)
RenderableLayer	getLayer() Returns the measure tool layer.
double	getLength()
gov.nasa.worldwind.render.Polyline	getLine() Returns the polyline currently used to display lines and path.
java.awt.Color	getLineColor()
double	getLineWidth()
java.lang.String	getMeasureShapeType() Get the measure shape type.
protected MeasureTool.ControlPoint	getOppositeControl(java.lang.String control)
Angle	getOrientation()
java.lang.String	getPathType()
protected java.lang.String	getPathType(java.util.List<? extends Position> positions)
java.util.ArrayList<? extends Position>	getPositions() Get the list of positions that define the current measure shape.
java.lang.String	getShapeInitialControl(Position position)
protected Angle	getShapeInitialHeading()
SurfaceShape	getSurfaceShape() Returns the surface shape currently used to display polygons.
UnitsFormat	getUnitsFormat() Return the UnitsFormat instance governing the measurement value display units and format.
double	getWidth()
WorldWindow	getWwd()
boolean	isArmed() Identifies whether the measure tool controller is armed.
boolean	isCenterControl(MeasureTool.ControlPoint controlPoint)
boolean	isCornerControl(MeasureTool.ControlPoint controlPoint)
boolean	isFollowTerrain()
boolean	isMeasureShape(java.lang.Object o)
boolean	isRegularShape()
protected boolean	isRegularShape(java.lang.String shape)
boolean	isShowAnnotation()
boolean	isShowControlPoints()
boolean	isSideControl(MeasureTool.ControlPoint controlPoint)
protected static java.lang.String	keyFromPolylinePathType(int type)
protected boolean	lengthsEssentiallyEqual(java.lang.Double l1, java.lang.Double l2)
void	moveControlPoint(MeasureTool.ControlPoint point) Update the current measure shape according to a given control point position.
void	moveControlPoint(MeasureTool.ControlPoint point, java.lang.String mode) Update the current measure shape according to a given control point position and shape edition mode.
void	moveMeasureShape(Angle azimuth, Angle distance) Move the current measure shape along a great circle arc at a given azimuth Angle for a given distance Angle.
protected LatLon	moveShapeByControlPoint(MeasureTool.ControlPoint controlPoint, Globe globe, Angle heading, LatLon center, double width, double height)
protected static int	polylinePathTypeFromKey(java.lang.String type)
void	removeControlPoint() Remove the last control point from the current measure shape.
void	setArmed(boolean state) Arms and disarms the measure tool controller.
void	setController(MeasureToolController controller) Set the controller object for this measure tool - can be null.
void	setFillColor(java.awt.Color color)
void	setFollowTerrain(boolean followTerrain)
protected void	setInitialLabels()
void	setLabel(java.lang.String labelName, java.lang.String label)
void	setLineColor(java.awt.Color color)
void	setLineWidth(double width)
void	setMeasureShape(gov.nasa.worldwind.render.Polyline line) Set the measure shape to an existing Polyline.
void	setMeasureShape(SurfaceShape surfaceShape) Set the measure shape to an existing SurfaceShape.
void	setMeasureShapeType(java.lang.String shape) Set the measure shape type.
void	setMeasureShapeType(java.lang.String shapeType, Position centerPosition, double radius) Set and initialize the measure shape to one of the regular shapes SHAPE_CIRCLE, SHAPE_ELLIPSE, SHAPE_SQUARE or SHAPE_QUAD.
void	setMeasureShapeType(java.lang.String shapeType, Position centerPosition, double width, double height, Angle orientation) Set and initialize the measure shape to one of the regular shapes SHAPE_CIRCLE, SHAPE_ELLIPSE, SHAPE_SQUARE or SHAPE_QUAD.
void	setPathType(java.lang.String type)
void	setPositions(java.util.ArrayList<? extends Position> newPositions) Set the measure shape to an arbitrary list of positions.
void	setShowAnnotation(boolean state)
void	setShowControlPoints(boolean state)
void	setUnitsFormat(UnitsFormat unitsFormat) Set the measure tool's @{link UnitsFormat} instance that governs measurement value display units and format.
protected void	swapCornerControls(java.lang.String control, Position position)
protected void	swapEdgeControls(java.lang.String control, Position position)
void	updateAnnotation(Position pos)
protected void	updateControlPointWithLeader(MeasureTool.ControlPointWithLeader cp, LatLon controlLocation)
protected void	updateMeasureShape()
protected void	updatePositionsFromShape()
protected void	updateShapeCenter(java.lang.String control, Position newPosition)
protected void	updateShapeControlPoints()
protected void	updateShapeOrientation(java.lang.String control, Position newPosition)
protected void	updateShapeProperties(java.lang.String control, Position newPosition, java.lang.String mode)
protected void	updateShapeSize(java.lang.String control, Position newPosition)

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

Field Detail

ACCUMULATED_LABEL

public static final java.lang.String ACCUMULATED_LABEL

See Also:

Constant Field Values

ANGLE_LABEL

public static final java.lang.String ANGLE_LABEL

See Also:

Constant Field Values

annotation

protected ScreenAnnotation annotation

annotationAttributes

protected AnnotationAttributes annotationAttributes

applicationLayer

protected RenderableLayer applicationLayer

AREA_LABEL

public static final java.lang.String AREA_LABEL

See Also:

Constant Field Values

CENTER_LATITUDE_LABEL

public static final java.lang.String CENTER_LATITUDE_LABEL

See Also:

Constant Field Values

CENTER_LONGITUDE_LABEL

public static final java.lang.String CENTER_LONGITUDE_LABEL

See Also:

Constant Field Values

CONTROL_TYPE_LEADER_ORIGIN

public static final java.lang.String CONTROL_TYPE_LEADER_ORIGIN

See Also:

Constant Field Values

CONTROL_TYPE_LOCATION_INDEX

public static final java.lang.String CONTROL_TYPE_LOCATION_INDEX

See Also:

Constant Field Values

CONTROL_TYPE_REGULAR_SHAPE

public static final java.lang.String CONTROL_TYPE_REGULAR_SHAPE

See Also:

Constant Field Values

controller

protected MeasureToolController controller

controlPoints

protected java.util.ArrayList<Renderable> controlPoints

controlPointsAttributes

protected AnnotationAttributes controlPointsAttributes

controlPointsLayer

protected MeasureTool.CustomRenderableLayer controlPointsLayer

controlPointWithLeaderAttributes

protected AnnotationAttributes controlPointWithLeaderAttributes

EVENT_ARMED

public static final java.lang.String EVENT_ARMED

See Also:

Constant Field Values

EVENT_METRIC_CHANGED

public static final java.lang.String EVENT_METRIC_CHANGED

See Also:

Constant Field Values

EVENT_POSITION_ADD

public static final java.lang.String EVENT_POSITION_ADD

See Also:

Constant Field Values

EVENT_POSITION_REMOVE

public static final java.lang.String EVENT_POSITION_REMOVE

See Also:

Constant Field Values

EVENT_POSITION_REPLACE

public static final java.lang.String EVENT_POSITION_REPLACE

See Also:

Constant Field Values

EVENT_RUBBERBAND_START

public static final java.lang.String EVENT_RUBBERBAND_START

See Also:

Constant Field Values

EVENT_RUBBERBAND_STOP

public static final java.lang.String EVENT_RUBBERBAND_STOP

See Also:

Constant Field Values

fillColor

protected java.awt.Color fillColor

followTerrain

protected boolean followTerrain

HEADING_LABEL

public static final java.lang.String HEADING_LABEL

See Also:

Constant Field Values

HEIGHT_LABEL

public static final java.lang.String HEIGHT_LABEL

See Also:

Constant Field Values

LATITUDE_LABEL

public static final java.lang.String LATITUDE_LABEL

See Also:

Constant Field Values

layer

protected MeasureTool.CustomRenderableLayer layer

leaderAttributes

protected ShapeAttributes leaderAttributes

LENGTH_LABEL

public static final java.lang.String LENGTH_LABEL

See Also:

Constant Field Values

line

protected gov.nasa.worldwind.render.Polyline line

lineColor

protected java.awt.Color lineColor

lineWidth

protected double lineWidth

LONGITUDE_LABEL

public static final java.lang.String LONGITUDE_LABEL

See Also:

Constant Field Values

MAJOR_AXIS_LABEL

public static final java.lang.String MAJOR_AXIS_LABEL

See Also:

Constant Field Values

MAX_SHAPE_MOVE_ITERATIONS

protected static final int MAX_SHAPE_MOVE_ITERATIONS

See Also:

Constant Field Values

measureShapeType

protected java.lang.String measureShapeType

MINOR_AXIS_LABEL

public static final java.lang.String MINOR_AXIS_LABEL

See Also:

Constant Field Values

pathType

protected java.lang.String pathType

PERIMETER_LABEL

public static final java.lang.String PERIMETER_LABEL

See Also:

Constant Field Values

positions

protected java.util.ArrayList<Position> positions

RADIUS_LABEL

public static final java.lang.String RADIUS_LABEL

See Also:

Constant Field Values

SHAPE_CIRCLE

public static final java.lang.String SHAPE_CIRCLE

See Also:

Constant Field Values

SHAPE_CONTROL_EPSILON_METERS

protected static final double SHAPE_CONTROL_EPSILON_METERS

See Also:

Constant Field Values

SHAPE_ELLIPSE

public static final java.lang.String SHAPE_ELLIPSE

See Also:

Constant Field Values

SHAPE_LINE

public static final java.lang.String SHAPE_LINE

See Also:

Constant Field Values

SHAPE_MIN_HEIGHT_METERS

protected static final double SHAPE_MIN_HEIGHT_METERS

See Also:

Constant Field Values

SHAPE_MIN_WIDTH_METERS

protected static final double SHAPE_MIN_WIDTH_METERS

See Also:

Constant Field Values

SHAPE_PATH

public static final java.lang.String SHAPE_PATH

See Also:

Constant Field Values

SHAPE_POLYGON

public static final java.lang.String SHAPE_POLYGON

See Also:

Constant Field Values

SHAPE_QUAD

public static final java.lang.String SHAPE_QUAD

See Also:

Constant Field Values

SHAPE_SQUARE

public static final java.lang.String SHAPE_SQUARE

See Also:

Constant Field Values

shapeCenterPosition

protected Position shapeCenterPosition

shapeIntervals

protected int shapeIntervals

shapeLayer

protected MeasureTool.CustomRenderableLayer shapeLayer

shapeOrientation

protected Angle shapeOrientation

shapeRectangle

protected java.awt.geom.Rectangle2D.Double shapeRectangle

showAnnotation

protected boolean showAnnotation

showControlPoints

protected boolean showControlPoints

surfaceShape

protected SurfaceShape surfaceShape

unitsFormat

protected UnitsFormat unitsFormat

WIDTH_LABEL

public static final java.lang.String WIDTH_LABEL

See Also:

Constant Field Values

wwd

protected final WorldWindow wwd

Constructor Detail

MeasureTool

public MeasureTool(WorldWindow wwd)

Construct a new measure tool drawing events from the specified WorldWindow.

Parameters:

wwd - the WorldWindow to draw events from.

MeasureTool

public MeasureTool(WorldWindow wwd,
                   RenderableLayer applicationLayer)

Construct a new measure tool drawing events from the specified WorldWindow and using the given RenderableLayer.

Parameters:

wwd - the WorldWindow to draw events from.

applicationLayer - the RenderableLayer to use. May be null. If specified, the caller is responsible for adding the layer to the model and enabling it.

Method Detail

addControlPoint

public Position addControlPoint()

Add a control point to the current measure shape at the current WorldWindow position.

Returns:

The position of the new control point, or null if the control point could not be added.

addControlPoint

protected void addControlPoint(Position position,
                               java.lang.String key,
                               java.lang.Object value)

addControlPointWithLeader

protected void addControlPointWithLeader(Position position,
                                         java.lang.String controlKey,
                                         java.lang.Object control,
                                         java.lang.String leaderKey,
                                         java.lang.Object leader)

areLocationsRedundant

protected boolean areLocationsRedundant(LatLon locA,
                                        LatLon locB)

clear

public void clear()

Removes all positions from the shape, clear attributes.

computeAccumulatedLength

protected java.lang.Double computeAccumulatedLength(LatLon pos)

computeAngleBetween

protected Angle computeAngleBetween(LatLon a,
                                    LatLon b,
                                    LatLon c)

computeControlPointAzimuth

protected Angle computeControlPointAzimuth(java.lang.String control,
                                           double width,
                                           double height)

computeControlPointAzimuthInShapeCoordinates

protected Angle computeControlPointAzimuthInShapeCoordinates(java.lang.String control,
                                                             Angle azimuth)

computeControlPointLocation

protected LatLon computeControlPointLocation(java.lang.String control,
                                             Globe globe,
                                             Angle heading,
                                             LatLon center,
                                             double width,
                                             double height)

computeControlPointPathLength

protected Angle computeControlPointPathLength(java.lang.String control,
                                              double width,
                                              double height,
                                              double globeRadius)

computeCornerControl

protected java.lang.String computeCornerControl(Position position)

computeNormalizedHeading

protected static Angle computeNormalizedHeading(Angle heading)

computePathLength

protected double computePathLength()

computeQuadEdgeMidpointLocation

protected LatLon computeQuadEdgeMidpointLocation(java.lang.String control,
                                                 Globe globe,
                                                 Angle heading,
                                                 LatLon center,
                                                 double width,
                                                 double height)

computeSurfacePosition

protected Position computeSurfacePosition(LatLon latLon)

createCustomRenderableLayer

protected MeasureTool.CustomRenderableLayer createCustomRenderableLayer()

Returns:

Instance of the custom renderable layer to use of our internal layers

dispose

public void dispose()

Description copied from interface: Disposable

Disposes of any internal resources allocated by the object.

Specified by:

dispose in interface Disposable

doAddControlPoint

protected void doAddControlPoint(MeasureTool.ControlPoint controlPoint)

formatCircleMeasurements

protected java.lang.String formatCircleMeasurements(Position pos)

formatEllipseMeasurements

protected java.lang.String formatEllipseMeasurements(Position pos)

formatLineMeasurements

protected java.lang.String formatLineMeasurements(Position pos)

formatPolygonMeasurements

protected java.lang.String formatPolygonMeasurements(Position pos)

formatQuadMeasurements

protected java.lang.String formatQuadMeasurements(Position pos)

formatSquareMeasurements

protected java.lang.String formatSquareMeasurements(Position pos)

getAnnotationAttributes

public AnnotationAttributes getAnnotationAttributes()

Get the attributes associated with the tool tip annotation.

Returns:

the attributes associated with the tool tip annotation.

getApplicationLayer

public RenderableLayer getApplicationLayer()

Returns the application layer passed to the constructor.

Returns:

the layer containing the measure shape and control points.

getArea

public double getArea()

getCenterPosition

public Position getCenterPosition()

getController

public MeasureToolController getController()

Get the MeasureToolController for this measure tool.

Returns:

the MeasureToolController for this measure tool.

getControlPoint

public MeasureTool.ControlPoint getControlPoint(java.lang.String control)

getControlPoints

public java.util.ArrayList<Renderable> getControlPoints()

Get the list of control points associated with the current measure shape.

Returns:

the list of control points associated with the current measure shape.

getControlPointsAttributes

public AnnotationAttributes getControlPointsAttributes()

Get the attributes associated with the control points.

Returns:

the attributes associated with the control points.

getDisplayString

protected java.lang.String getDisplayString(Position pos)

getFillColor

public java.awt.Color getFillColor()

getHeight

public double getHeight()

getLabel

public java.lang.String getLabel(java.lang.String labelName)

getLayer

public RenderableLayer getLayer()

Returns the measure tool layer.

Returns:

the layer containing the measure shape and control points.

getLength

public double getLength()

getLine

public gov.nasa.worldwind.render.Polyline getLine()

Returns the polyline currently used to display lines and path.

Returns:

the polyline currently used to display lines and path.

getLineColor

public java.awt.Color getLineColor()

getLineWidth

public double getLineWidth()

getMeasureShapeType

public java.lang.String getMeasureShapeType()

Get the measure shape type. can be one of SHAPE_LINE, SHAPE_PATH, SHAPE_POLYGON, SHAPE_CIRCLE, SHAPE_ELLIPSE, SHAPE_SQUARE or SHAPE_QUAD.

Returns:

the measure shape type.

getOppositeControl

protected MeasureTool.ControlPoint getOppositeControl(java.lang.String control)

getOrientation

public Angle getOrientation()

getPathType

public java.lang.String getPathType()

getPathType

protected java.lang.String getPathType(java.util.List<? extends Position> positions)

getPositions

public java.util.ArrayList<? extends Position> getPositions()

Get the list of positions that define the current measure shape.

Returns:

the list of positions that define the current measure shape.

getShapeInitialControl

public java.lang.String getShapeInitialControl(Position position)

getShapeInitialHeading

protected Angle getShapeInitialHeading()

getSurfaceShape

public SurfaceShape getSurfaceShape()

Returns the surface shape currently used to display polygons.

Returns:

the surface shape currently used to display polygons.

getUnitsFormat

public UnitsFormat getUnitsFormat()

Return the UnitsFormat instance governing the measurement value display units and format.

Returns:

the tool's units format instance.

getWidth

public double getWidth()

getWwd

public WorldWindow getWwd()

isArmed

public boolean isArmed()

Identifies whether the measure tool controller is armed.

Returns:

true if armed, false if not armed.

isCenterControl

public boolean isCenterControl(MeasureTool.ControlPoint controlPoint)

isCornerControl

public boolean isCornerControl(MeasureTool.ControlPoint controlPoint)

isFollowTerrain

public boolean isFollowTerrain()

isMeasureShape

public boolean isMeasureShape(java.lang.Object o)

isRegularShape

public boolean isRegularShape()

isRegularShape

protected boolean isRegularShape(java.lang.String shape)

isShowAnnotation

public boolean isShowAnnotation()

isShowControlPoints

public boolean isShowControlPoints()

isSideControl

public boolean isSideControl(MeasureTool.ControlPoint controlPoint)

keyFromPolylinePathType

protected static java.lang.String keyFromPolylinePathType(int type)

lengthsEssentiallyEqual

protected boolean lengthsEssentiallyEqual(java.lang.Double l1,
                                          java.lang.Double l2)

moveControlPoint

public void moveControlPoint(MeasureTool.ControlPoint point)

Update the current measure shape according to a given control point position.

Parameters:

point - one of the shape control points.

moveControlPoint

public void moveControlPoint(MeasureTool.ControlPoint point,
                             java.lang.String mode)

Update the current measure shape according to a given control point position and shape edition mode.

Parameters:

point - one of the shape control points.

mode - the shape edition mode.

moveMeasureShape

public void moveMeasureShape(Angle azimuth,
                             Angle distance)

Move the current measure shape along a great circle arc at a given azimuth Angle for a given distance Angle.

Parameters:

azimuth - the azimuth Angle.

distance - the distance Angle.

moveShapeByControlPoint

protected LatLon moveShapeByControlPoint(MeasureTool.ControlPoint controlPoint,
                                         Globe globe,
                                         Angle heading,
                                         LatLon center,
                                         double width,
                                         double height)

polylinePathTypeFromKey

protected static int polylinePathTypeFromKey(java.lang.String type)

removeControlPoint

public void removeControlPoint()

Remove the last control point from the current measure shape.

setArmed

public void setArmed(boolean state)

Arms and disarms the measure tool controller. When armed, the controller monitors user input and builds the shape in response to user actions. When disarmed, the controller ignores all user input.

Parameters:

state - true to arm the controller, false to disarm it.

setController

public void setController(MeasureToolController controller)

Set the controller object for this measure tool - can be null.

Parameters:

controller - the controller object for this measure tool.

setFillColor

public void setFillColor(java.awt.Color color)

setFollowTerrain

public void setFollowTerrain(boolean followTerrain)

setInitialLabels

protected void setInitialLabels()

setLabel

public void setLabel(java.lang.String labelName,
                     java.lang.String label)

setLineColor

public void setLineColor(java.awt.Color color)

setLineWidth

public void setLineWidth(double width)

setMeasureShape

public void setMeasureShape(gov.nasa.worldwind.render.Polyline line)

Set the measure shape to an existing Polyline.

Parameters:

line - a Polyline instance.

setMeasureShape

public void setMeasureShape(SurfaceShape surfaceShape)

Set the measure shape to an existing SurfaceShape. Can be one of SurfacePolygon, SurfaceQuad, SurfaceSquare, SurfaceEllipse or SurfaceCircle.

Parameters:

surfaceShape - a SurfaceShape instance.

setMeasureShapeType

public void setMeasureShapeType(java.lang.String shape)

Set the measure shape type. can be one of SHAPE_LINE, SHAPE_PATH, SHAPE_POLYGON, SHAPE_CIRCLE, SHAPE_ELLIPSE, SHAPE_SQUARE or SHAPE_QUAD. This will reset the measure tool and clear the current measure shape.

Parameters:

shape - the measure shape type.

setMeasureShapeType

public void setMeasureShapeType(java.lang.String shapeType,
                                Position centerPosition,
                                double radius)

Set and initialize the measure shape to one of the regular shapes SHAPE_CIRCLE, SHAPE_ELLIPSE, SHAPE_SQUARE or SHAPE_QUAD.

Parameters:

shapeType - the shape type.

centerPosition - the shape center position.

radius - the shape radius of half width/height.

setMeasureShapeType

public void setMeasureShapeType(java.lang.String shapeType,
                                Position centerPosition,
                                double width,
                                double height,
                                Angle orientation)

Set and initialize the measure shape to one of the regular shapes SHAPE_CIRCLE, SHAPE_ELLIPSE, SHAPE_SQUARE or SHAPE_QUAD.

Parameters:

shapeType - the shape type.

centerPosition - the shape center position.

width - the shape width.

height - the shape height.

orientation - the shape orientation or azimuth angle - clockwise from north.

setPathType

public void setPathType(java.lang.String type)

setPositions

public void setPositions(java.util.ArrayList<? extends Position> newPositions)

Set the measure shape to an arbitrary list of positions. If the provided list contains two positions, the measure shape will be set to SHAPE_LINE. If more then two positions are provided, the measure shape will be set to SHAPE_PATH if the last position differs from the first (open path), or SHAPE_POLYGON if the path is closed.

Parameters:

newPositions - the shape position list.

setShowAnnotation

public void setShowAnnotation(boolean state)

setShowControlPoints

public void setShowControlPoints(boolean state)

setUnitsFormat

public void setUnitsFormat(UnitsFormat unitsFormat)

Set the measure tool's @{link UnitsFormat} instance that governs measurement value display units and format.

Parameters:

unitsFormat - the units format instance.

Throws:

java.lang.IllegalArgumentException - if the units format instance is null.

swapCornerControls

protected void swapCornerControls(java.lang.String control,
                                  Position position)

swapEdgeControls

protected void swapEdgeControls(java.lang.String control,
                                Position position)

updateAnnotation

public void updateAnnotation(Position pos)

updateControlPointWithLeader

protected void updateControlPointWithLeader(MeasureTool.ControlPointWithLeader cp,
                                            LatLon controlLocation)

updateMeasureShape

protected void updateMeasureShape()

updatePositionsFromShape

protected void updatePositionsFromShape()

updateShapeCenter

protected void updateShapeCenter(java.lang.String control,
                                 Position newPosition)

updateShapeControlPoints

protected void updateShapeControlPoints()

updateShapeOrientation

protected void updateShapeOrientation(java.lang.String control,
                                      Position newPosition)

updateShapeProperties

protected void updateShapeProperties(java.lang.String control,
                                     Position newPosition,
                                     java.lang.String mode)

updateShapeSize

protected void updateShapeSize(java.lang.String control,
                               Position newPosition)