Java java.awt.geom Class Rectangle2D.Double（JDK8）

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