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JavaTM 2 Platform Std. Ed. v1.3 |
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java.lang.Object | +--java.awt.geom.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.
| Inner 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 float 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 float 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 pointPoint2D and the specified point.public double distanceSq(Point2D pt)
Point2D to a specified Point2D.pt - the specified Point2DPoint2D to a specified Point2D.
public double distance(double PX,
double PY)
Point2D to
a specified point.PX, PY - the coordinates of the specified
Point2DPoint2D
and a specified point.public double distance(Point2D pt)
Point2D to a
specified Point2D.pt - the specified Point2DPoint2D 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.public 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 Point2Dtrue if the object to be compared is
an instance of Point2D and has
the same values; false otherwise.
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JavaTM 2 Platform Std. Ed. v1.3 |
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Copyright 1993-2000 Sun Microsystems, Inc. 901 San Antonio Road
Palo Alto, California, 94303, U.S.A. All Rights Reserved.