| |
|
| java.lang.Object
 java.awt.geom.Point2D
All known Subclasses: java.awt.Point,
| Point2D | | abstract public class Point2D implements Cloneable(Code) | | 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.
version:
1.27, 05/05/07
author:
Jim Graham
since:
1.2 |
| Constructor Summary | |
| protected | Point2D()
This is an abstract class that cannot be instantiated directly. |
| Method Summary | |
| public Object | clone()
Creates a new object of the same class and with the
same contents as this object. | | public static double | distance(double x1, double y1, double x2, double y2)
Returns the distance between two points. | | public double | distance(double px, double py)
Returns the distance from this Point2D to
a specified point. | | public double | distance(Point2D pt)
Returns the distance from this Point2D to a
specified Point2D. | | public static double | distanceSq(double x1, double y1, double x2, double y2)
Returns the square of the distance between two points. | | public double | distanceSq(double px, double py)
Returns the square of the distance from this
Point2D to a specified point. | | public double | distanceSq(Point2D pt)
Returns the square of the distance from this
Point2D to a specified Point2D. | | public boolean | equals(Object obj)
Determines whether or not two points are equal. | | abstract public double | getX()
Returns the X coordinate of this Point2D in
double precision. | | abstract public double | getY()
Returns the Y coordinate of this Point2D in
double precision.
the Y coordinate of this Point2D. | | public int | hashCode()
Returns the hashcode for this Point2D. | | abstract public void | setLocation(double x, double y)
Sets the location of this Point2D to the
specified double coordinates. | | public void | setLocation(Point2D p)
Sets the location of this Point2D to the same
coordinates as the specified Point2D object. |
| Point2D | | protected Point2D()(Code) | | This is an abstract class that cannot be instantiated directly.
Type-specific implementation subclasses are available for
instantiation and provide a number of formats for storing
the information necessary to satisfy the various accessor
methods below.
See Also: java.awt.geom.Point2D.Float
See Also: java.awt.geom.Point2D.Double
See Also: java.awt.Point
since:
1.2 |
| clone | | public Object clone()(Code) | | Creates a new object of the same class and with the
same contents as this object.
a clone of this instance.
exception:
OutOfMemoryError - if there is not enough memory.
See Also: java.lang.Cloneable
since:
1.2 |
| distance | | public static double distance(double x1, double y1, double x2, double y2)(Code) | | Returns the distance between two points.
Parameters:
x1 - the X coordinate of the first specified point
Parameters:
y1 - the Y coordinate of the first specified point
Parameters:
x2 - the X coordinate of the second specified point
Parameters:
y2 - the Y coordinate of the second specified point the distance between the two sets of specifiedcoordinates.
since:
1.2 |
| distance | | public double distance(double px, double py)(Code) | | Returns the distance from this Point2D to
a specified point.
Parameters:
px - the X coordinate of the specified point to be measuredagainst this Point2D
Parameters:
py - the Y coordinate of the specified point to be measuredagainst this Point2D the distance between this Point2Dand a specified point.
since:
1.2 |
| distance | | public double distance(Point2D pt)(Code) | | Returns the distance from this Point2D to a
specified Point2D.
Parameters:
pt - the specified point to be measuredagainst this Point2D the distance between this Point2D andthe specified Point2D.
since:
1.2 |
| distanceSq | | public static double distanceSq(double x1, double y1, double x2, double y2)(Code) | | Returns the square of the distance between two points.
Parameters:
x1 - the X coordinate of the first specified point
Parameters:
y1 - the Y coordinate of the first specified point
Parameters:
x2 - the X coordinate of the second specified point
Parameters:
y2 - the Y coordinate of the second specified point the square of the distance between the twosets of specified coordinates.
since:
1.2 |
| distanceSq | | public double distanceSq(double px, double py)(Code) | | Returns the square of the distance from this
Point2D to a specified point.
Parameters:
px - the X coordinate of the specified point to be measuredagainst this Point2D
Parameters:
py - the Y coordinate of the specified point to be measuredagainst this Point2D the square of the distance between thisPoint2D and the specified point.
since:
1.2 |
| distanceSq | | public double distanceSq(Point2D pt)(Code) | | Returns the square of the distance from this
Point2D to a specified Point2D.
Parameters:
pt - the specified point to be measuredagainst this Point2D the square of the distance between thisPoint2D to a specified Point2D.
since:
1.2 |
| equals | | public boolean equals(Object obj)(Code) | | Determines whether or not two points are equal. Two instances of
Point2D are equal if the values of their
x and y member fields, representing
their position in the coordinate space, are the same.
Parameters:
obj - an object to be compared with this Point2D true if the object to be compared isan instance of Point2D and hasthe same values; false otherwise.
since:
1.2 |
| getX | | abstract public double getX()(Code) | | Returns the X coordinate of this Point2D in
double precision.
the X coordinate of this Point2D.
since:
1.2 |
| getY | | abstract public double getY()(Code) | | Returns the Y coordinate of this Point2D in
double precision.
the Y coordinate of this Point2D.
since:
1.2 |
| hashCode | | public int hashCode()(Code) | | Returns the hashcode for this Point2D.
a hash code for this Point2D. |
| setLocation | | abstract public void setLocation(double x, double y)(Code) | | Sets the location of this Point2D to the
specified double coordinates.
Parameters:
x - the new X coordinate of this Point2D
Parameters:
y - the new Y coordinate of this Point2D
since:
1.2 |
| setLocation | | public void setLocation(Point2D p)(Code) | | Sets the location of this Point2D to the same
coordinates as the specified Point2D object.
Parameters:
p - the specified Point2D to which to setthis Point2D
since:
1.2 |
|
|
|