Package gov.nasa.worldwindx.examples.lineofsight

Class LineIntersector

java.lang.Object

gov.nasa.worldwindx.examples.lineofsight.LineIntersector

All Implemented Interfaces:

java.lang.Runnable

Direct Known Subclasses:

ShapeLineIntersector, TerrainLineIntersector

public abstract class LineIntersector
extends java.lang.Object
implements java.lang.Runnable

Base class for intersectors that compute intersections with a line. The line is specified by a single origin (see setReferencePosition(gov.nasa.worldwind.geom.Position)) and a list of end positions (see setPositions(Iterable)).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	LineIntersector.InternalIntersector

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.Map<Position,java.util.List<Intersection>>	allIntersections
protected long	endTime
protected int	numPositions
protected java.util.concurrent.atomic.AtomicInteger	numProcessedPositions
protected int	numThreads
protected java.lang.Iterable<Position>	positions
protected Vec4	referencePoint
protected Position	referencePosition
protected long	startTime
protected Terrain	terrain
protected java.util.concurrent.ThreadPoolExecutor	threadPool

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	LineIntersector(Terrain terrain, int numThreads)

Method Summary

Modifier and Type	Method	Description
protected abstract void	doPerformIntersection(Position position)	Called to execute an intersection test for one position.
java.util.Map<Position,java.util.List<Intersection>>	getAllIntersections()
long	getEndTime()
java.util.List<Intersection>	getIntersections(Position position)
int	getNumProcessedPositions()
int	getNumThreads()
java.lang.Iterable<Position>	getPositions()
Position	getReferencePosition()
long	getStartTime()
Terrain	getTerrain()
protected void	performIntersection(Position position)
void	run()
void	setPositions(java.lang.Iterable<Position> positions)	Specifies the end positions of all lines to intersect.
void	setReferencePosition(Position referencePosition)	Sets the origin of the lines to intersect.

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

terrain

protected Terrain terrain

numThreads

protected int numThreads

referencePosition

protected Position referencePosition

positions

protected java.lang.Iterable<Position> positions

numPositions

protected int numPositions

referencePoint

protected Vec4 referencePoint

threadPool

protected java.util.concurrent.ThreadPoolExecutor threadPool

numProcessedPositions

protected java.util.concurrent.atomic.AtomicInteger numProcessedPositions

startTime

protected long startTime

endTime

protected long endTime

allIntersections

protected java.util.Map<Position,java.util.List<Intersection>> allIntersections

Constructor Detail

LineIntersector

protected LineIntersector(Terrain terrain,
                          int numThreads)

Method Detail

doPerformIntersection

protected abstract void doPerformIntersection(Position position)
                                       throws java.lang.InterruptedException

Called to execute an intersection test for one position.

Parameters:

position - the position to test.

Throws:

java.lang.InterruptedException - if the operation is interrupted.s

getTerrain

public Terrain getTerrain()

getNumThreads

public int getNumThreads()

getReferencePosition

public Position getReferencePosition()

setReferencePosition

public void setReferencePosition(Position referencePosition)

Sets the origin of the lines to intersect.

Parameters:

referencePosition - the origin to use for all lines.

getPositions

public java.lang.Iterable<Position> getPositions()

setPositions

public void setPositions(java.lang.Iterable<Position> positions)

Specifies the end positions of all lines to intersect. Intersection tests are performed for each position, using the position as the line's end and the current reference position as the line's origin.

Parameters:

positions - the positions.

getStartTime

public long getStartTime()

getEndTime

public long getEndTime()

getNumProcessedPositions

public int getNumProcessedPositions()

getAllIntersections

public java.util.Map<Position,java.util.List<Intersection>> getAllIntersections()

getIntersections

public java.util.List<Intersection> getIntersections(Position position)

run

public void run()

Specified by:

run in interface java.lang.Runnable

performIntersection

protected void performIntersection(Position position)
                            throws java.lang.InterruptedException

Throws:

java.lang.InterruptedException