gov.nasa.worldwind.geom
Class Line
java.lang.Object
 gov.nasa.worldwind.geom.Line
public final class Line - extends Object
Line
public Line(Vec4 origin,
Vec4 direction)
- Parameters:
origin - direction -
- Throws:
IllegalArgumentException - if origin is null, or direction is null or has zero
length
clipToFrustum
public static Vec4[] clipToFrustum(Vec4 pa,
Vec4 pb,
Frustum frustum)
- Clip a line segment to a frustum, returning the end points of the portion of the segment that is within the
frustum.
- Parameters:
pa - the first point of the segment.pb - the second point of the segment.frustum - the frustum.
- Returns:
- The two points at which the segment intersects the frustum, or null if the segment does not intersect and
the frustum does not fully contain it. If the segment is coincident with a plane of the frustum, the
returned segment is the portion of the original segment on that plane, clipped to the other frustum
planes.
distanceTo
public final double distanceTo(Vec4 p)
- Calculate the shortests distance between this line and a specified
Vec4. This method returns a
positive distance.
- Parameters:
p - the Vec4 whose distance from this Line will be calculated
- Returns:
- the distance between this
Line and the specified Vec4
- Throws:
IllegalArgumentException - if p is null
distanceToSegment
public static double distanceToSegment(Vec4 p0,
Vec4 p1,
Vec4 p)
equals
public final boolean equals(Object o)
- Performs a comparison to test whether this Object is internally identical to the other Object
o.
This method takes into account both direction and origin, so two lines which may be equivalent may not be
considered equal.
- Overrides:
equals in class Object
- Parameters:
o - the object to be compared against.
- Returns:
- true if these two objects are equal, false otherwise
fromSegment
public static Line fromSegment(Vec4 pa,
Vec4 pb)
- Create the line containing a line segement between two points.
- Parameters:
pa - the first point of the line segment.pb - the second point of the line segment.
- Returns:
- The line containing the two points.
- Throws:
IllegalArgumentException - if either point is null or they are coincident.
getDirection
public final Vec4 getDirection()
getOrigin
public final Vec4 getOrigin()
getPointAt
public final Vec4 getPointAt(double t)
hashCode
public final int hashCode()
- Overrides:
hashCode in class Object
nearestPointOnSegment
public static Vec4 nearestPointOnSegment(Vec4 p0,
Vec4 p1,
Vec4 p)
nearestPointTo
public final Vec4 nearestPointTo(Vec4 p)
selfDot
public final double selfDot()
toString
public String toString()
- Overrides:
toString in class Object
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