Class Ellipse2D.Double
- java.lang.Object
-
- java.awt.geom.RectangularShape
-
- java.awt.geom.Ellipse2D
-
- java.awt.geom.Ellipse2D.Double
- All Implemented Interfaces:
-
Shape
,Serializable
,Cloneable
- Enclosing class:
- Ellipse2D
public static class Ellipse2D.Double extends Ellipse2D implements Serializable
The Double
class defines an ellipse specified in double
precision.
- Since:
- 1.2
- See Also:
- Serialized Form
Nested Classes
Nested classes/interfaces declared in class java.awt.geom.Ellipse2D
Ellipse2D.Double, Ellipse2D.Float
Fields
Modifier and Type | Field | Description |
---|---|---|
double | height | The overall height of the |
double | width | The overall width of this |
double | x | The X coordinate of the upper-left corner of the framing rectangle of this |
double | y | The Y coordinate of the upper-left corner of the framing rectangle of this |
Constructors
Constructor | Description |
---|---|
Double() | Constructs a new |
Double(double x,
double y,
double w,
double h) | Constructs and initializes an |
Methods
Modifier and Type | Method | Description |
---|---|---|
Rectangle2D | getBounds2D() | Returns a high precision and more accurate bounding box of the |
double | getHeight() | Returns the height of the framing rectangle in |
double | getWidth() | Returns the width of the framing rectangle in |
double | getX() | Returns the X coordinate of the upper-left corner of the framing rectangle in |
double | getY() | Returns the Y coordinate of the upper-left corner of the framing rectangle in |
boolean | isEmpty() | Determines whether the |
void | setFrame(double x,
double y,
double w,
double h) | Sets the location and size of the framing rectangle of this |
Methods declared in class java.awt.geom.Ellipse2D
contains, contains, equals, getPathIterator, hashCode, intersects
Methods declared in 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 declared in class java.lang.Object
finalize, getClass, notify, notifyAll, toString, wait, wait, wait
Fields
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
Constructors
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
Methods
getX
public double getX()
Returns the X coordinate of the upper-left corner of the framing rectangle in double
precision.
- Specified by:
-
getX
in classRectangularShape
- 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 classRectangularShape
- 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 classRectangularShape
- 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 classRectangularShape
- 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 classRectangularShape
- Returns:
-
true
if theRectangularShape
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 classRectangularShape
- 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 interfaceShape
- Returns:
- an instance of
Rectangle2D
that is a high-precision bounding box of theShape
. - Since:
- 1.2
- See Also:
Shape.getBounds()
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https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/java/awt/geom/Ellipse2D.Double.html