Module java.desktop

Package java.awt.geom

Class Rectangle2D.Double

java.lang.Object

java.awt.geom.RectangularShape

java.awt.geom.Rectangle2D

java.awt.geom.Rectangle2D.Double

All Implemented Interfaces:

Shape, Serializable, Cloneable

Enclosing class:

Rectangle2D

public static class Rectangle2D.Double
extends Rectangle2D
implements Serializable

The Double class defines a rectangle specified in double coordinates.

Since:

1.2

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces declared in class java.awt.geom.Rectangle2D

Rectangle2D.Double, Rectangle2D.Float

Field Summary

Fields

Modifier and Type	Field	Description
double	height	The height of this Rectangle2D.
double	width	The width of this Rectangle2D.
double	x	The X coordinate of this Rectangle2D.
double	y	The Y coordinate of this Rectangle2D.

Fields declared in class java.awt.geom.Rectangle2D

OUT_BOTTOM, OUT_LEFT, OUT_RIGHT, OUT_TOP

Constructor Summary

Constructors

Constructor	Description
Double()	Constructs a new Rectangle2D, initialized to location (0, 0) and size (0, 0).
Double(double x, double y, double w, double h)	Constructs and initializes a Rectangle2D from the specified double coordinates.

Method Summary

Modifier and Type	Method	Description
Rectangle2D	createIntersection(Rectangle2D r)	Returns a new Rectangle2D object representing the intersection of this Rectangle2D with the specified Rectangle2D.
Rectangle2D	createUnion(Rectangle2D r)	Returns a new Rectangle2D object representing the union of this Rectangle2D with the specified Rectangle2D.
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.
int	outcode(double x, double y)	Determines where the specified coordinates lie with respect to this Rectangle2D.
void	setRect(double x, double y, double w, double h)	Sets the location and size of this Rectangle2D to the specified double values.
void	setRect(Rectangle2D r)	Sets this Rectangle2D to be the same as the specified Rectangle2D.
String	toString()	Returns the String representation of this Rectangle2D.

Methods declared in class java.awt.geom.Rectangle2D

add, add, add, contains, contains, equals, getPathIterator, getPathIterator, hashCode, intersect, intersects, intersectsLine, intersectsLine, outcode, setFrame, union

Methods declared in class java.awt.geom.RectangularShape

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

Methods declared in class java.lang.Object

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

Field Detail

x

public double x

The X coordinate of this Rectangle2D.

Since:

1.2

y

public double y

The Y coordinate of this Rectangle2D.

Since:

1.2

width

public double width

The width of this Rectangle2D.

Since:

1.2

height

public double height

The height of this Rectangle2D.

Since:

1.2

Constructor Detail

Double

public Double()

Constructs a new Rectangle2D, initialized to location (0, 0) and size (0, 0).

Since:

1.2

Double

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

Constructs and initializes a Rectangle2D from the specified double coordinates.

Parameters:

x - the X coordinate of the upper-left corner of the newly constructed Rectangle2D

y - the Y coordinate of the upper-left corner of the newly constructed Rectangle2D

w - the width of the newly constructed Rectangle2D

h - the height of the newly constructed Rectangle2D

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

setRect

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

Sets the location and size of this Rectangle2D to the specified double values.

Specified by:

setRect in class Rectangle2D

Parameters:

x - the X coordinate of the upper-left corner of this Rectangle2D

y - the Y coordinate of the upper-left corner of this Rectangle2D

w - the width of this Rectangle2D

h - the height of this Rectangle2D

Since:

1.2

setRect

public void setRect(Rectangle2D r)

Sets this Rectangle2D to be the same as the specified Rectangle2D.

Overrides:

setRect in class Rectangle2D

Parameters:

r - the specified Rectangle2D

Since:

1.2

outcode

public int outcode(double x,
                   double y)

Determines where the specified coordinates lie with respect to this Rectangle2D. This method computes a binary OR of the appropriate mask values indicating, for each side of this Rectangle2D, whether or not the specified coordinates are on the same side of the edge as the rest of this Rectangle2D.

Specified by:

outcode in class Rectangle2D

Parameters:

x - the specified X coordinate

y - the specified Y coordinate

Returns:

the logical OR of all appropriate out codes.

Since:

1.2

See Also:

Rectangle2D.OUT_LEFT, Rectangle2D.OUT_TOP, Rectangle2D.OUT_RIGHT, Rectangle2D.OUT_BOTTOM

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

Overrides:

getBounds2D in class Rectangle2D

Returns:

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

Since:

1.2

See Also:

Shape.getBounds()

createIntersection

public Rectangle2D createIntersection(Rectangle2D r)

Returns a new Rectangle2D object representing the intersection of this Rectangle2D with the specified Rectangle2D.

Specified by:

createIntersection in class Rectangle2D

Parameters:

r - the Rectangle2D to be intersected with this Rectangle2D

Returns:

the largest Rectangle2D contained in both the specified Rectangle2D and in this Rectangle2D.

Since:

1.2

createUnion

public Rectangle2D createUnion(Rectangle2D r)

Returns a new Rectangle2D object representing the union of this Rectangle2D with the specified Rectangle2D.

Specified by:

createUnion in class Rectangle2D

Parameters:

r - the Rectangle2D to be combined with this Rectangle2D

Returns:

the smallest Rectangle2D containing both the specified Rectangle2D and this Rectangle2D.

Since:

1.2

toString

public String toString()

Returns the String representation of this Rectangle2D.

Overrides:

toString in class Object

Returns:

a String representing this Rectangle2D.

Since:

1.2