gov.nasa.worldwind.geom
Class Intersection

java.lang.Object
  gov.nasa.worldwind.geom.Intersection

public final class Intersection
extends Object

Field Summary

protected Double	intersectionLength
protected Vec4	intersectionPoint
protected Position	intersectionPosition
protected boolean	isTangent
protected Object	object

Constructor Summary

Intersection(Vec4 intersectionPoint, boolean isTangent)
Constructs an Intersection from an intersection point and tangency indicator.

Intersection(Vec4 intersectionPoint, double intersectionLength, boolean isTangent)
Constructs an Intersection from an intersection point and tangency indicator.

Intersection(Vec4 intersectionPoint, Position intersectionPosition, boolean isTangent, Object object)

Method Summary

boolean	equals(Object o)
Double	getIntersectionLength() The parametric length along the intersection geometry.
Vec4	getIntersectionPoint() Returns the intersection point.
Position	getIntersectionPosition() Returns the intersection position if one has been set.
Object	getObject() Returns the object associated with the intersection.
int	hashCode()
boolean	isTangent() Indicates whether the intersection is tangent to the object intersected.
void	setIntersectionPoint(Vec4 intersectionPoint) Specifies the intersection point.
void	setIntersectionPosition(Position intersectionPosition) Specifies the intersection position, which should be a position computed from the intersection point.
void	setObject(Object object) Specifies the object to associate with the intersection.
void	setTangent(boolean tangent) Specifies whether the intersection is tangent to the object intersected.
static Queue<Intersection>	sort(Vec4 refPoint, List<Intersection> listA, List<Intersection> listB) Merges two lists of intersections into a single list sorted by intersection distance from a specified reference point.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

intersectionLength

protected Double intersectionLength

intersectionPoint

protected Vec4 intersectionPoint

intersectionPosition

protected Position intersectionPosition

isTangent

protected boolean isTangent

object

protected Object object

Constructor Detail

Intersection

public Intersection(Vec4 intersectionPoint,
                    boolean isTangent)

Constructs an Intersection from an intersection point and tangency indicator.

Parameters:

intersectionPoint - the intersection point.

isTangent - true if the intersection is tangent to the object intersected, otherwise false.

Throws:

IllegalArgumentException - if intersectionPoint is null

Intersection

public Intersection(Vec4 intersectionPoint,
                    double intersectionLength,
                    boolean isTangent)

Constructs an Intersection from an intersection point and tangency indicator.

Parameters:

intersectionPoint - the intersection point

intersectionLength - the parametric length along the intersection geometry. If the geometry was a line, then this value will be the parametric value of the intersection point along the line.

isTangent - true if the intersection is tangent to the object intersected, otherwise false.

Throws:

IllegalArgumentException - if intersectionPoint is null

Intersection

public Intersection(Vec4 intersectionPoint,
                    Position intersectionPosition,
                    boolean isTangent,
                    Object object)

Method Detail

equals

public boolean equals(Object o)

Overrides:

equals in class Object

getIntersectionLength

public Double getIntersectionLength()

The parametric length along the intersection geometry. If the geometry involved a line, this value is the parametric distance at which the intersection occurred along the line.

Returns:

the intersection length, or null if the length was not calculated.

getIntersectionPoint

public Vec4 getIntersectionPoint()

Returns the intersection point.

Returns:

the intersection point.

getIntersectionPosition

public Position getIntersectionPosition()

Returns the intersection position if one has been set.

Returns:

the intersection position, or null if the position has not been set.

getObject

public Object getObject()

Returns the object associated with the intersection.

Returns:

the object associated with the intersection, or null if no object is associated.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

isTangent

public boolean isTangent()

Indicates whether the intersection is tangent to the object intersected.

Returns:

true if the intersection is tangent, otherwise false.

setIntersectionPoint

public void setIntersectionPoint(Vec4 intersectionPoint)

Specifies the intersection point.

Parameters:

intersectionPoint - the intersection point. May be null, but typically should not be.

setIntersectionPosition

public void setIntersectionPosition(Position intersectionPosition)

Specifies the intersection position, which should be a position computed from the intersection point.

Parameters:

intersectionPosition - the intersection position. May be null.

setObject

public void setObject(Object object)

Specifies the object to associate with the intersection.

Parameters:

object - the object to associate with the intersection. May be null.

setTangent

public void setTangent(boolean tangent)

Specifies whether the intersection is tangent to the object intersected.

Parameters:

tangent - true if the intersection is tangent, otherwise false.

sort

public static Queue<Intersection> sort(Vec4 refPoint,
                                       List<Intersection> listA,
                                       List<Intersection> listB)

Merges two lists of intersections into a single list sorted by intersection distance from a specified reference point.

Parameters:

refPoint - the reference point.

listA - the first list of intersections.

listB - the second list of intersections.

Returns:

the merged list of intersections, sorted by increasing distance from the reference point.

toString

public String toString()

Overrides:

toString in class Object