gov.nasa.worldwindx.examples.util
Class ExtentVisibilitySupport.ScreenExtent

java.lang.Object
  gov.nasa.worldwindx.examples.util.ExtentVisibilitySupport.ScreenExtent

Enclosing class:

ExtentVisibilitySupport

public static class ExtentVisibilitySupport.ScreenExtent
extends Object

ScreenExtent represents a screen object's enclosing bounding box in screen coordinates, and that object's reference point in model coordinates. ExtentVisibilitySupport assumes that the relationship between the model reference point and the screen bounds are predicable: projecting the reference point into screen coordinates should yield a screen point with a predictable location relative to the screen bounds.

Field Summary

protected Vec4	modelReferencePoint
protected Rectangle	screenBounds

Constructor Summary

ExtentVisibilitySupport.ScreenExtent(Vec4 modelReferencePoint, Rectangle screenBounds)
Constructs a new ScreenExtent with the specified model coordinate reference point and screen coordinate bounding box.

Method Summary

Vec4	getModelReferencePoint() Returns the model coordinate reference point.
Rectangle	getScreenBounds() Returns the screen coordinate bounding rectangle.

Methods inherited from class java.lang.Object

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

Field Detail

modelReferencePoint

protected Vec4 modelReferencePoint

screenBounds

protected Rectangle screenBounds

Constructor Detail

ExtentVisibilitySupport.ScreenExtent

public ExtentVisibilitySupport.ScreenExtent(Vec4 modelReferencePoint,
                                            Rectangle screenBounds)

Constructs a new ScreenExtent with the specified model coordinate reference point and screen coordinate bounding box. Either value may be null.

Parameters:

modelReferencePoint - the model coordinate reference point. A null reference is accepted.

screenBounds - the screen coordinate bounding rectangle. A null reference is accepted.

Method Detail

getModelReferencePoint

public Vec4 getModelReferencePoint()

Returns the model coordinate reference point. This may return null, indicating this ScreenExtent has no model coordinate reference point.

Returns:

the reference point in model coordinates. May be null.

getScreenBounds

public Rectangle getScreenBounds()

Returns the screen coordinate bounding rectangle. This may return null, indicating the ScreenExtent has no screen coordinate bounds.

Returns:

the bounding rectangle in screen coordinates. May be null.