Module java.desktop

Package java.awt.geom

Class Ellipse2D

java.lang.Object

java.awt.geom.RectangularShape

java.awt.geom.Ellipse2D

All Implemented Interfaces:

Cloneable

Direct Known Subclasses:

Ellipse2D.Double, Ellipse2D.Float

public abstract class Ellipse2D
extends RectangularShape

The Ellipse2D class describes an ellipse that is defined by a framing rectangle.

This class is only the abstract superclass for all objects which store a 2D ellipse. The actual storage representation of the coordinates is left to the subclass.

Since:

1.2

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Ellipse2D.Double	The Double class defines an ellipse specified in double precision.
static class	Ellipse2D.Float	The Float class defines an ellipse specified in float precision.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Ellipse2D()	This is an abstract class that cannot be instantiated directly.

Method Summary

Modifier and Type	Method	Description
boolean	contains(double x, double y)
boolean	contains(double x, double y, double w, double h)
boolean	equals(Object obj)	Determines whether or not the specified Object is equal to this Ellipse2D.
PathIterator	getPathIterator(AffineTransform at)	Returns an iteration object that defines the boundary of this Ellipse2D.
int	hashCode()	Returns the hashcode for this Ellipse2D.
boolean	intersects(double x, double y, double w, double h)

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from class java.awt.geom.RectangularShape

clone, contains, contains, getBounds, getCenterX, getCenterY, getFrame, getHeight, getMaxX, getMaxY, getMinX, getMinY, getPathIterator, getWidth, getX, getY, intersects, isEmpty, setFrame, setFrame, setFrame, setFrameFromCenter, setFrameFromCenter, setFrameFromDiagonal, setFrameFromDiagonal

Methods inherited from interface java.awt.Shape

getBounds2D

Constructor Detail

Ellipse2D

protected Ellipse2D()

This is an abstract class that cannot be instantiated directly. Type-specific implementation subclasses are available for instantiation and provide a number of formats for storing the information necessary to satisfy the various accessor methods below.

Since:

1.2

See Also:

Ellipse2D.Float, Ellipse2D.Double

Method Detail

contains

public boolean contains(double x,
                        double y)

Since:

1.2

intersects

public boolean intersects(double x,
                          double y,
                          double w,
                          double h)

Since:

1.2

contains

public boolean contains(double x,
                        double y,
                        double w,
                        double h)

Since:

1.2

getPathIterator

public PathIterator getPathIterator(AffineTransform at)

Returns an iteration object that defines the boundary of this Ellipse2D. The iterator for this class is multi-threaded safe, which means that this Ellipse2D class guarantees that modifications to the geometry of this Ellipse2D object do not affect any iterations of that geometry that are already in process.

Parameters:

at - an optional AffineTransform to be applied to the coordinates as they are returned in the iteration, or null if untransformed coordinates are desired

Returns:

the PathIterator object that returns the geometry of the outline of this Ellipse2D, one segment at a time.

Since:

1.2

hashCode

public int hashCode()

Returns the hashcode for this Ellipse2D.

Overrides:

hashCode in class Object

Returns:

the hashcode for this Ellipse2D.

Since:

1.6

See Also:

Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

equals

public boolean equals(Object obj)

Determines whether or not the specified Object is equal to this Ellipse2D. The specified Object is equal to this Ellipse2D if it is an instance of Ellipse2D and if its location and size are the same as this Ellipse2D.

Overrides:

equals in class Object

Parameters:

obj - an Object to be compared with this Ellipse2D.

Returns:

true if obj is an instance of Ellipse2D and has the same values; false otherwise.

Since:

1.6

See Also:

Object.hashCode(), HashMap