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

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java.awt.geom
Class RoundRectangle2D.Float

java.lang.Object
  extended by java.awt.geom.RectangularShape
      extended by java.awt.geom.RoundRectangle2D
          extended by java.awt.geom.RoundRectangle2D.Float
All Implemented Interfaces:
Shape, Serializable, Cloneable
Enclosing class:
RoundRectangle2D
public static class RoundRectangle2D.Float
extends RoundRectangle2D
implements Serializable

The Float class defines a rectangle with rounded corners all specified in float 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
 float archeight
          The height of the arc that rounds off the corners.
 float arcwidth
          The width of the arc that rounds off the corners.
 float height
          The height of this RoundRectangle2D.
 float width
          The width of this RoundRectangle2D.
 float x
          The X coordinate of this RoundRectangle2D.
 float y
          The Y coordinate of this RoundRectangle2D.
 
Constructor Summary
RoundRectangle2D.Float()
          Constructs a new RoundRectangle2D, initialized to location (0.0, 0), size (0.0, 0.0), and corner arcs of radius 0.0.
RoundRectangle2D.Float(float x, float y, float w, float h, float arcw, float arch)
          Constructs and initializes a RoundRectangle2D from the specified float 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(float x, float y, float w, float h, float arcw, float arch)
          Sets the location, size, and corner radii of this RoundRectangle2D to the specified float 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 float x
The X coordinate of this RoundRectangle2D.

Since:
1.2

y

public float y
The Y coordinate of this RoundRectangle2D.

Since:
1.2

width

public float width
The width of this RoundRectangle2D.

Since:
1.2

height

public float height
The height of this RoundRectangle2D.

Since:
1.2

arcwidth

public float arcwidth
The width of the arc that rounds off the corners.

Since:
1.2

archeight

public float archeight
The height of the arc that rounds off the corners.

Since:
1.2
Constructor Detail

RoundRectangle2D.Float

public RoundRectangle2D.Float()
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.Float

public RoundRectangle2D.Float(float x,
                              float y,
                              float w,
                              float h,
                              float arcw,
                              float arch)
Constructs and initializes a RoundRectangle2D from the specified float 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(float x,
                         float y,
                         float w,
                         float h,
                         float arcw,
                         float arch)
Sets the location, size, and corner radii of this RoundRectangle2D to the specified float values.

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(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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Java™ Platform
Standard Ed. 6
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SUMMARY: NESTED | FIELD | CONSTR | METHOD DETAIL: FIELD | CONSTR | METHOD
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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.

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