RoundRectangle2D.Double (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Standard Ed. 6

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java.awt.geom
Class RoundRectangle2D.Double

java.lang.Object
  java.awt.geom.RectangularShape
      java.awt.geom.RoundRectangle2D
          java.awt.geom.RoundRectangle2D.Double

All Implemented Interfaces:: Shape, Serializable, Cloneable

Enclosing class:: RoundRectangle2D

public static class RoundRectangle2D.Double
extends RoundRectangle2D
implements Serializable
extends RoundRectangle2D
implements Serializable

The Double class defines a rectangle with rounded corners all specified in double coordinates.

Since:: 1.2
See Also:: Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.geom.RoundRectangle2D

RoundRectangle2D.Double, RoundRectangle2D.Float

Field Summary

double archeight
          The height of the arc that rounds off the corners.

double arcwidth
          The width of the arc that rounds off the corners.

double height
          The height of this RoundRectangle2D.

double width
          The width of this RoundRectangle2D.

double x
          The X coordinate of this RoundRectangle2D.

double y
          The Y coordinate of this RoundRectangle2D.

Constructor Summary

RoundRectangle2D.Double()
          Constructs a new RoundRectangle2D, initialized to location (0.0, 0), size (0.0, 0.0), and corner arcs of radius 0.0.

RoundRectangle2D.Double(double x, double y, double w, double h, double arcw, double arch)
          Constructs and initializes a RoundRectangle2D from the specified double coordinates.

Method Summary

double getArcHeight()
          Gets the height of the arc that rounds off the corners.

double getArcWidth()
          Gets the width of the arc that rounds off the corners.

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 setRoundRect(double x, double y, double w, double h, double arcw, double arch)
          Sets the location, size, and corner radii of this RoundRectangle2D to the specified double values.

void setRoundRect(RoundRectangle2D rr)
          Sets this RoundRectangle2D to be the same as the specified RoundRectangle2D.

Methods inherited from class java.awt.geom.RoundRectangle2D

contains, contains, equals, getPathIterator, hashCode, intersects, setFrame

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

Nested classes/interfaces inherited from class java.awt.geom.RoundRectangle2D
`RoundRectangle2D.Double, RoundRectangle2D.Float`

Field Summary
`double`	`archeight` The height of the arc that rounds off the corners.
`double`	`arcwidth` The width of the arc that rounds off the corners.
`double`	`height` The height of this `RoundRectangle2D`.
`double`	`width` The width of this `RoundRectangle2D`.
`double`	`x` The X coordinate of this `RoundRectangle2D`.
`double`	`y` The Y coordinate of this `RoundRectangle2D`.

Constructor Summary
`RoundRectangle2D.Double()` Constructs a new `RoundRectangle2D`, initialized to location (0.0, 0), size (0.0, 0.0), and corner arcs of radius 0.0.
`RoundRectangle2D.Double(double x, double y, double w, double h, double arcw, double arch)` Constructs and initializes a `RoundRectangle2D` from the specified `double` coordinates.

Method Summary
`double`	`getArcHeight()` Gets the height of the arc that rounds off the corners.
`double`	`getArcWidth()` Gets the width of the arc that rounds off the corners.
`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`	`setRoundRect(double x, double y, double w, double h, double arcw, double arch)` Sets the location, size, and corner radii of this `RoundRectangle2D` to the specified `double` values.
`void`	`setRoundRect(RoundRectangle2D rr)` Sets this `RoundRectangle2D` to be the same as the specified `RoundRectangle2D`.

Methods inherited from class java.awt.geom.RoundRectangle2D
`contains, contains, equals, getPathIterator, hashCode, intersects, setFrame`

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 this RoundRectangle2D.

Since:: 1.2

y

public double y

The Y coordinate of this RoundRectangle2D.

Since:: 1.2

width

public double width

The width of this RoundRectangle2D.

Since:: 1.2

height

public double height

The height of this RoundRectangle2D.

Since:: 1.2

arcwidth

public double arcwidth

The width of the arc that rounds off the corners.

Since:: 1.2

archeight

public double archeight

The height of the arc that rounds off the corners.

Since:: 1.2

Constructor Detail

RoundRectangle2D.Double

public RoundRectangle2D.Double()

Constructs a new RoundRectangle2D, initialized to location (0.0, 0), size (0.0, 0.0), and corner arcs of radius 0.0.

Since:: 1.2

RoundRectangle2D.Double

public RoundRectangle2D.Double(double x,
                               double y,
                               double w,
                               double h,
                               double arcw,
                               double arch)

Constructs and initializes a RoundRectangle2D from the specified double coordinates.

Parameters:: x - the X coordinate of the newly constructed RoundRectangle2D; y - the Y coordinate of the newly constructed RoundRectangle2D; w - the width to which to set the newly constructed RoundRectangle2D; h - the height to which to set the newly constructed RoundRectangle2D; arcw - the width of the arc to use to round off the corners of the newly constructed RoundRectangle2D; arch - the height of the arc to use to round off the corners of the newly constructed RoundRectangle2D
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

getArcWidth

public double getArcWidth()

Gets the width of the arc that rounds off the corners.

Specified by:: getArcWidth in class RoundRectangle2D

Returns:: the width of the arc that rounds off the corners of this RoundRectangle2D.
Since:: 1.2

getArcHeight

public double getArcHeight()

Gets the height of the arc that rounds off the corners.

Specified by:: getArcHeight in class RoundRectangle2D

Returns:: the height of the arc that rounds off the corners of this RoundRectangle2D.
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

setRoundRect

public void setRoundRect(double x,
                         double y,
                         double w,
                         double h,
                         double arcw,
                         double arch)

Sets the location, size, and corner radii of this RoundRectangle2D to the specified double values.

Specified by:: setRoundRect in class RoundRectangle2D

Parameters:: x - the X coordinate to which to set the location of this RoundRectangle2D; y - the Y coordinate to which to set the location of this RoundRectangle2D; w - the width to which to set this RoundRectangle2D; h - the height to which to set this RoundRectangle2D; arcw - the width to which to set the arc of this RoundRectangle2D; arch - the height to which to set the arc of this RoundRectangle2D
Since:: 1.2

setRoundRect

public void setRoundRect(RoundRectangle2D rr)

Sets this RoundRectangle2D to be the same as the specified RoundRectangle2D.

Overrides:: setRoundRect in class RoundRectangle2D

Parameters:: rr - the specified RoundRectangle2D
Since:: 1.2

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.

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()

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For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

RoundRectangle2D.Double (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

java.awt.geom Class RoundRectangle2D.Double

x

y

width

height

arcwidth

archeight

RoundRectangle2D.Double

RoundRectangle2D.Double

getX

getY

getWidth

getHeight

getArcWidth

getArcHeight

isEmpty

setRoundRect

setRoundRect

getBounds2D

java.awt.geom
Class RoundRectangle2D.Double