java.awt
Class Point
- Cloneable, Serializable
This class represents a point on the screen using cartesian coordinates.
Remember that in screen coordinates, increasing x values go from left to
right, and increasing y values go from top to bottom.
There are some public fields; if you mess with them in an inconsistent
manner, it is your own fault when you get invalid results. Also, this
class is not threadsafe.
int | x- The x coordinate.
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int | y- The y coordinate.
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Point()- Initializes a new instance of
Point representing the
coordinates (0, 0).
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Point(int x, int y)- Initializes a new instance of
Point with the specified
coordinates.
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Point(Point p)- Initializes a new instance of
Point with coordinates
identical to the coordinates of the specified point.
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boolean | equals(Object obj)- Tests whether or not this object is equal to the specified object.
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Point | getLocation()- Returns the location of this point.
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double | getX()- Get the x coordinate.
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double | getY()- Get the y coordinate.
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void | move(int x, int y)- Sets this object's coordinates to the specified values.
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void | setLocation(double x, double y)- Sets this object's coordinates to the specified values.
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void | setLocation(int x, int y)- Sets this object's coordinates to the specified values.
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void | setLocation(Point p)- Sets this object's coordinates to match those of the specified point.
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String | toString()- Returns a string representation of this object.
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void | translate(int dx, int dy)- Changes the coordinates of this point such that the specified
dx parameter is added to the existing X coordinate and
dy is added to the existing Y coordinate.
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clone, distance, distance, distance, distanceSq, distanceSq, distanceSq, equals, getX, getY, hashCode, setLocation, setLocation |
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
x
public int x
The x coordinate.
y
public int y
The y coordinate.
Point
public Point()
Initializes a new instance of Point representing the
coordinates (0, 0).
Point
public Point(int x,
int y) Initializes a new instance of Point with the specified
coordinates.
x - the X coordinatey - the Y coordinate
Point
public Point(Point p)
Initializes a new instance of Point with coordinates
identical to the coordinates of the specified point.
p - the point to copy the coordinates from
equals
public boolean equals(Object obj)
Tests whether or not this object is equal to the specified object.
This will be true if and only if the specified object is an instance
of Point2D and has the same X and Y coordinates.
- equals in interface Point2D
obj - the object to test against for equality
- true if the specified object is equal
getLocation
public Point getLocation()
Returns the location of this point. A pretty useless method, as this
is already a point.
getX
public double getX()
Get the x coordinate.
- getX in interface Point2D
- the value of x, as a double
getY
public double getY()
Get the y coordinate.
- getY in interface Point2D
- the value of y, as a double
move
public void move(int x,
int y) Sets this object's coordinates to the specified values. This method
is identical to the setLocation(int, int) method.
x - the new X coordinatey - the new Y coordinate
setLocation
public void setLocation(double x,
double y) Sets this object's coordinates to the specified values. This method
rounds to the nearest integer coordinates by adding 0.5 and calling
Math.floor(double).
- setLocation in interface Point2D
x - the new X coordinatey - the new Y coordinate
setLocation
public void setLocation(int x,
int y) Sets this object's coordinates to the specified values. This method
is identical to the move() method.
x - the new X coordinatey - the new Y coordinate
setLocation
public void setLocation(Point p)
Sets this object's coordinates to match those of the specified point.
p - the point to copy the coordinates from
toString
public String toString()
Returns a string representation of this object. The format is:
getClass().getName() + "[x=" + x + ",y=" + y + ']'.
- toString in interface Object
- a string representation of this object
translate
public void translate(int dx,
int dy) Changes the coordinates of this point such that the specified
dx parameter is added to the existing X coordinate and
dy is added to the existing Y coordinate.
dx - the amount to add to the X coordinatedy - the amount to add to the Y coordinate
Point.java -- represents a point in 2-D space
Copyright (C) 1999, 2002, 2006 Free Software Foundation
This file is part of GNU Classpath.
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