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Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class Ellipse2D.Double - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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java.awt.geom
Class Ellipse2D.Double

java.lang.Object
  |
  +--java.awt.geom.RectangularShape
        |
        +--java.awt.geom.Ellipse2D
              |
              +--java.awt.geom.Ellipse2D.Double

Enclosing class:

Ellipse2D

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public static class Ellipse2D.Double

extends Ellipse2D

The Double class defines an ellipse specified in double precision.

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Inner classes inherited from class java.awt.geom.Ellipse2D

Ellipse2D.Double, Ellipse2D.Float

 

Field Summary
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 this Ellipse2D.
double	y           The y coordinate of the upper left corner of this Ellipse2D.

 

Constructor Summary

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
Rectangle2D	getBounds2D()           Returns the high precision bounding box of this Ellipse2D.
double	getHeight()           Returns the overall height of this Ellipse2D in double precision.
double	getWidth()           Returns the overall width of this Ellipse2D in double precision.
double	getX()           Returns the X coordinate of the upper left corner of this Ellipse2D in double precision.
double	getY()           Returns the Y coordinate of the upper left corner of this Ellipse2D in double precision.
boolean	isEmpty()           Determines whether or not the bounding box of this Ellipse2D is empty.
void	setFrame(double x, double y, double w, double h)           Sets the location and size of this Ellipse2D to the specified double values.

 

Methods inherited from class java.awt.geom.Ellipse2D

contains, contains, getPathIterator, 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

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

 

Field Detail

x

public double x

The x coordinate of the upper left corner of this Ellipse2D.

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y

public double y

The y coordinate of the upper left corner of this Ellipse2D.

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width

public double width

The overall width of this Ellipse2D.

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height

public double height

The overall height of the Ellipse2D.

Constructor Detail

Ellipse2D.Double

public Ellipse2D.Double()

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

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Ellipse2D.Double

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

Constructs and initializes an Ellipse2D from the specified coordinates.

Parameters:

x, y - the coordinates of the bounding rectangle

w - the width of the rectangle

h - the height of the rectangle

Method Detail

getX

public double getX()

Returns the X coordinate of the upper left corner of this Ellipse2D in double precision.

Overrides:

getX in class RectangularShape

Returns:

the X coordinate of the upper left corner of the bounding box of this Ellipse2D.

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getY

public double getY()

Returns the Y coordinate of the upper left corner of this Ellipse2D in double precision.

Overrides:

getY in class RectangularShape

Returns:

the Y coordinate of the upper left corner of the bounding box of this Ellipse2D.

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getWidth

public double getWidth()

Returns the overall width of this Ellipse2D in double precision.

Overrides:

getWidth in class RectangularShape

Returns:

the width of this Ellipse2D.

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getHeight

public double getHeight()

Returns the overall height of this Ellipse2D in double precision.

Overrides:

getHeight in class RectangularShape

Returns:

the height of this Ellipse2D.

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isEmpty

public boolean isEmpty()

Determines whether or not the bounding box of this Ellipse2D is empty.

Overrides:

isEmpty in class RectangularShape

Returns:

true if the bounding box of this Ellipse2D is empty; false otherwise.

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setFrame

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

Sets the location and size of this Ellipse2D to the specified double values.

Overrides:

setFrame in class RectangularShape

Parameters:

x, y - the specified coordinates to which to set the location of the bounding box of this Ellipse2D

w - the width to which to set the width of this Ellipse2D

h - the height to which to set the height of this Ellipse2D

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getBounds2D

public Rectangle2D getBounds2D()

Returns the high precision bounding box of this Ellipse2D.

Returns:

a Rectangle2D that is the bounding box of this Ellipse2D.

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