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Java™ Platform Standard Ed. 6 |
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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 - the new X coordinate of this Point2Dy - the new Y coordinate of this Point2Dpublic void setLocation(Point2D p)
Point2D to the same
coordinates as the specified Point2D object.
p - the specified Point2D to which to set
this Point2D
public static double distanceSq(double x1,
double y1,
double x2,
double y2)
x1 - the X coordinate of the first specified pointy1 - the Y coordinate of the first specified pointx2 - the X coordinate of the second specified pointy2 - the Y coordinate of the second specified point
public static double distance(double x1,
double y1,
double x2,
double y2)
x1 - the X coordinate of the first specified pointy1 - the Y coordinate of the first specified pointx2 - the X coordinate of the second specified pointy2 - the Y coordinate of the second specified point
public double distanceSq(double px,
double py)
Point2D to a specified point.
px - the X coordinate of the specified point to be measured
against this Point2Dpy - the Y coordinate of the specified point to be measured
against this Point2D
Point2D and the specified point.public double distanceSq(Point2D pt)
Point2D to a specified Point2D.
pt - the specified point to be measured
against this Point2D
Point2D to a specified Point2D.
public double distance(double px,
double py)
Point2D to
a specified point.
px - the X coordinate of the specified point to be measured
against this Point2Dpy - the Y coordinate of the specified point to be measured
against this Point2D
Point2D
and a specified point.public double distance(Point2D pt)
Point2D to a
specified Point2D.
pt - the specified point to be measured
against this 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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Java™ Platform Standard Ed. 6 |
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Copyright 2006 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.