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JavaTM 2 Platform Standard Ed. 5.0 |
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java.lang.Objectjava.awt.geom.Point2D
public abstract class Point2D
The Point2D class defines a point representing a location
in (x, y) coordinate space.
This class is only the abstract superclass for all objects that store a 2D coordinate. The actual storage representation of the coordinates is left to the subclass.
| Nested Class Summary | |
|---|---|
static class |
Point2D.Double
The Double class defines a point specified in
double precision. |
static class |
Point2D.Float
The Float class defines a point specified in float
precision. |
| Constructor Summary | |
|---|---|
protected |
Point2D()
This is an abstract class that cannot be instantiated directly. |
| Method Summary | |
|---|---|
Object |
clone()
Creates a new object of the same class and with the same contents as this object. |
double |
distance(double PX,
double PY)
Returns the distance from this Point2D to
a specified point. |
static double |
distance(double X1,
double Y1,
double X2,
double Y2)
Returns the distance between two points. |
double |
distance(Point2D pt)
Returns the distance from this Point2D to a
specified Point2D. |
double |
distanceSq(double PX,
double PY)
Returns the square of the distance from this Point2D to a specified point. |
static double |
distanceSq(double X1,
double Y1,
double X2,
double Y2)
Returns the square of the distance between two points. |
double |
distanceSq(Point2D pt)
Returns the square of the distance from this Point2D to a specified Point2D. |
boolean |
equals(Object obj)
Determines whether or not two points are equal. |
abstract double |
getX()
Returns the X coordinate of this Point2D in
double precision. |
abstract double |
getY()
Returns the Y coordinate of this Point2D in
double precision. |
int |
hashCode()
Returns the hashcode for this Point2D. |
abstract void |
setLocation(double x,
double y)
Sets the location of this Point2D to the
specified double coordinates. |
void |
setLocation(Point2D p)
Sets the location of this Point2D to the same
coordinates as the specified Point2D object. |
| Methods inherited from class java.lang.Object |
|---|
finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
protected Point2D()
Point2D.Float,
Point2D.Double,
Point| Method Detail |
|---|
public abstract double getX()
Point2D in
double precision.
Point2D.public abstract double getY()
Point2D in
double precision.
Point2D.
public abstract void setLocation(double x,
double y)
Point2D to the
specified double coordinates.
x, y - the coordinates of this Point2Dpublic void setLocation(Point2D p)
Point2D to the same
coordinates as the specified Point2D object.
p - the specified Point2D the which to set
this Point2D
public static double distanceSq(double X1,
double Y1,
double X2,
double Y2)
X1, Y1 - the coordinates of the first pointX2, Y2 - the coordinates of the second point
public static double distance(double X1,
double Y1,
double X2,
double Y2)
X1, Y1 - the coordinates of the first pointX2, Y2 - the coordinates of the second point
public double distanceSq(double PX,
double PY)
Point2D to a specified point.
PX, PY - the coordinates of the other point
Point2D and the specified point.public double distanceSq(Point2D pt)
Point2D to a specified Point2D.
pt - the specified Point2D
Point2D to a specified Point2D.
public double distance(double PX,
double PY)
Point2D to
a specified point.
PX, PY - the coordinates of the specified
Point2D
Point2D
and a specified point.public double distance(Point2D pt)
Point2D to a
specified Point2D.
pt - the specified Point2D
Point2D and
the specified Point2D.public Object clone()
clone in class ObjectOutOfMemoryError - if there is not enough memory.Cloneablepublic int hashCode()
Point2D.
hashCode in class ObjectPoint2D.Object.equals(java.lang.Object),
Hashtablepublic boolean equals(Object obj)
Point2D are equal if the values of their
x and y member fields, representing
their position in the coordinate space, are the same.
equals in class Objectobj - an object to be compared with this Point2D
true if the object to be compared is
an instance of Point2D and has
the same values; false otherwise.Object.hashCode(),
Hashtable
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JavaTM 2 Platform Standard Ed. 5.0 |
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Copyright 2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.