java.awt.geom.RectangularShape
java.awt.geom.Ellipse2D
is new.
java.lang.Object
public abstract class Ellipse2D
The Ellipse2D class describes an ellipse that is defined by a
framing
bounding
rectangle.
This class is only the abstract superclass for all objects which store a 2D ellipse. The actual storage representation of the coordinates is left to the subclass.
Since:
1.2
| Nested Class Summary | |
|---|---|
| static class |
Ellipse2D.Double
The Double class defines an ellipse specified in double precision. |
| static class |
Ellipse2D.Float
The Float class defines an ellipse specified in float precision. |
| Constructor Summary | |
|---|---|
| protected |
Ellipse2D
() This is an abstract class that cannot be instantiated directly. |
| Method Summary | |
|---|---|
| boolean |
contains
(double x, double y) Tests if
the
coordinates are
the Shape.
|
| boolean |
contains
(double x, double y, double w, double h) Tests if the interior of
the Shape
|
| boolean |
equals
(
Object
obj) Determines whether or not the specified Object is equal to this Ellipse2D. |
| PathIterator |
getPathIterator
(
AffineTransform
at) Returns an iteration object that defines the boundary of this Ellipse2D. |
| int |
hashCode
() Returns the hashcode for this Ellipse2D. |
| boolean |
intersects
(double x, double y, double w, double h) Tests if the interior of
the Shape
|
| Methods inherited from class java.awt.geom. RectangularShape |
|---|
| clone , contains , contains , getBounds , getCenterX , getCenterY , getFrame , getHeight , getMaxX , getMaxY , getMinX , getMinY , getPathIterator , getWidth , getX , getY , intersects , isEmpty , setFrame , setFrame , setFrame , setFrameFromCenter , setFrameFromCenter , setFrameFromDiagonal , setFrameFromDiagonal |
| Methods inherited from class java.lang. Object |
|---|
| finalize , getClass , notify , notifyAll , toString , wait , wait , wait |
| Methods inherited from interface java.awt. Shape |
|---|
| getBounds2D |
| Constructor Detail |
|---|
protected Ellipse2D()
Since:
1.2
| Method Detail |
|---|
public boolean contains(double x,
double y)
the
coordinates are
the Shape.
x - the specified X coordinate to be tested
y - the specified Y coordinate to be tested
true if the specified coordinates are inside the Shape boundary; false otherwise.
Since:
1.2
public boolean intersects(double x,
double y,
double w,
double h)
Tests if the interior of the Shape intersects the interior of a specified rectangular area. The rectangular area is considered to intersect the Shape if any point is contained in both the interior of the Shape and the specified rectangular area.
The Shape.intersects() method allows a Shape implementation to conservatively return true when:
there is a high probability that the rectangular area and the Shape intersect, but
the calculations to accurately determine this intersection are prohibitively expensive.
This means that for some Shapes this method might return true even though the rectangular area does not intersect the Shape. The
Area
class performs more accurate computations of geometric intersection than most Shape objects and therefore can be used if a more precise answer is required.
x
X coordinate
upper-left
y - the Y coordinate of the upper-left corner of the specified rectangular area
rectangular
true if the interior of the Shape and the interior of the rectangular area intersect, or are both highly likely to intersect and intersection calculations would be too expensive to perform; false otherwise.
Since:
1.2
public boolean contains(double x,
double y,
double w,
double h)
Tests if the interior of the Shape entirely contains the specified rectangular area. All coordinates that lie inside the rectangular area must lie within the Shape for the entire rectanglar area to be considered contained within the Shape.
The Shape.contains() method allows a Shape implementation to conservatively return false when:
the intersect method returns true and
the calculations to determine whether or not the Shape entirely contains the rectangular area are prohibitively expensive.
This means that for some Shapes this method might return false even though the Shape contains the rectangular area. The
Area
class performs more accurate geometric computations than most Shape objects and therefore can be used if a more precise answer is required.
x
X coordinate
upper-left
y - the Y coordinate of the upper-left corner of the specified rectangular area
true if the interior of the Shape entirely contains the specified rectangular area; false otherwise or, if the Shape contains the rectangular area and the intersects method returns true and the containment calculations would be too expensive to perform.
Since:
1.2
public PathIterator getPathIterator(AffineTransform at)
Since:
1.2
public int hashCode()
public boolean equals(Object obj)