java.awt.geom

Class Ellipse2D.Double

java.lang.Object

java.awt.geom.RectangularShape

java.awt.geom.Ellipse2D

java.awt.geom.Ellipse2D.Double

All Implemented Interfaces:

Shape, Serializable, Cloneable

Enclosing class:

Ellipse2D

public static class Ellipse2D.Double
extends Ellipse2D
implements Serializable

The Double class defines an ellipse specified in double precision.

Since:

1.2

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.geom.Ellipse2D

Ellipse2D.Double, Ellipse2D.Float

Field Summary

Fields

Modifier and Type	Field and Description
double	height The overall height of the Ellipse2D.
double	width The overall width of this Ellipse2D.
double	x The X coordinate of the upper-left corner of the framing rectangle of this Ellipse2D.
double	y The Y coordinate of the upper-left corner of the framing rectangle of this Ellipse2D.

Constructor Summary

Constructors

Constructor and Description
Ellipse2D.Double() Constructs a new Ellipse2D, initialized to location (0, 0) and size (0, 0).
Ellipse2D.Double(double x, double y, double w, double h) Constructs and initializes an Ellipse2D from the specified coordinates.

Method Summary

Methods

Modifier and Type	Method and Description
Rectangle2D	getBounds2D() Returns a high precision and more accurate bounding box of the Shape than the getBounds method.
double	getHeight() Returns the height of the framing rectangle in double precision.
double	getWidth() Returns the width of the framing rectangle in double precision.
double	getX() Returns the X coordinate of the upper-left corner of the framing rectangle in double precision.
double	getY() Returns the Y coordinate of the upper-left corner of the framing rectangle in double precision.
boolean	isEmpty() Determines whether the RectangularShape is empty.
void	setFrame(double x, double y, double w, double h) Sets the location and size of the framing rectangle of this Shape to the specified rectangular values.

Methods inherited from class java.awt.geom.Ellipse2D

contains, contains, equals, getPathIterator, hashCode, intersects

Methods inherited from class java.awt.geom.RectangularShape

clone, contains, contains, getBounds, getCenterX, getCenterY, getFrame, getMaxX, getMaxY, getMinX, getMinY, getPathIterator, intersects, setFrame, setFrame, setFrameFromCenter, setFrameFromCenter, setFrameFromDiagonal, setFrameFromDiagonal

Methods inherited from class java.lang.Object

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

Field Detail

x

public double x

The X coordinate of the upper-left corner of the framing rectangle of this Ellipse2D.

Since:

1.2

y

public double y

The Y coordinate of the upper-left corner of the framing rectangle of this Ellipse2D.

Since:

1.2

width

public double width

The overall width of this Ellipse2D.

Since:

1.2

height

public double height

The overall height of the Ellipse2D.

Since:

1.2

Constructor Detail

Ellipse2D.Double

public Ellipse2D.Double()

Constructs a new Ellipse2D, initialized to location (0, 0) and size (0, 0).

Since:

1.2

Ellipse2D.Double

public Ellipse2D.Double(double x,
                double y,
                double w,
                double h)

Constructs and initializes an Ellipse2D from the specified coordinates.

Parameters:

x - the X coordinate of the upper-left corner of the framing rectangle

y - the Y coordinate of the upper-left corner of the framing rectangle

w - the width of the framing rectangle

h - the height of the framing rectangle

Since:

1.2

Method Detail

getX

public double getX()

Returns the X coordinate of the upper-left corner of the framing rectangle in double precision.

Specified by:

getX in class RectangularShape

Returns:

the X coordinate of the upper-left corner of the framing rectangle.

Since:

1.2

getY

public double getY()

Returns the Y coordinate of the upper-left corner of the framing rectangle in double precision.

Specified by:

getY in class RectangularShape

Returns:

the Y coordinate of the upper-left corner of the framing rectangle.

Since:

1.2

getWidth

public double getWidth()

Returns the width of the framing rectangle in double precision.

Specified by:

getWidth in class RectangularShape

Returns:

the width of the framing rectangle.

Since:

1.2

getHeight

public double getHeight()

Returns the height of the framing rectangle in double precision.

Specified by:

getHeight in class RectangularShape

Returns:

the height of the framing rectangle.

Since:

1.2

isEmpty

public boolean isEmpty()

Determines whether the RectangularShape is empty. When the RectangularShape is empty, it encloses no area.

Specified by:

isEmpty in class RectangularShape

Returns:

true if the RectangularShape is empty; false otherwise.

Since:

1.2

setFrame

public void setFrame(double x,
            double y,
            double w,
            double h)

Sets the location and size of the framing rectangle of this Shape to the specified rectangular values.

Specified by:

setFrame in class RectangularShape

Parameters:

x - the X coordinate of the upper-left corner of the specified rectangular shape

y - the Y coordinate of the upper-left corner of the specified rectangular shape

w - the width of the specified rectangular shape

h - the height of the specified rectangular shape

Since:

1.2

See Also:

RectangularShape.getFrame()

getBounds2D

public Rectangle2D getBounds2D()

Returns a high precision and more accurate bounding box of the Shape than the getBounds method. Note that there is no guarantee that the returned Rectangle2D is the smallest bounding box that encloses the Shape, only that the Shape lies entirely within the indicated Rectangle2D. The bounding box returned by this method is usually tighter than that returned by the getBounds method and never fails due to overflow problems since the return value can be an instance of the Rectangle2D that uses double precision values to store the dimensions.

Note that the definition of insideness can lead to situations where points on the defining outline of the shape may not be considered contained in the returned bounds object, but only in cases where those points are also not considered contained in the original shape.

If a point is inside the shape according to the contains(point) method, then it must be inside the returned Rectangle2D bounds object according to the contains(point) method of the bounds. Specifically:

shape.contains(p) requires bounds.contains(p)

If a point is not inside the shape, then it might still be contained in the bounds object:

bounds.contains(p) does not imply shape.contains(p)

Specified by:

getBounds2D in interface Shape

Returns:

an instance of Rectangle2D that is a high-precision bounding box of the Shape.

Since:

1.2

See Also:

Shape.getBounds()