Java java.awt.geom Class Ellipse2D.Double（JDK8）

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

• Double

  public Double()

  Constructs a new Ellipse2D, 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 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()