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 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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 */

package java.awt;

import java.awt.geom.Point2D;
import java.beans.Transient;

/**
 * A point representing a location in {@code (x,y)} coordinate space,
 * specified in integer precision.
 *
 * @author Sami Shaio
 * @since 1.0
 */
public class Point extends Point2D implements java.io.Serializable {
 /**
 * The X coordinate of this <code>Point</code>.
 * If no X coordinate is set it will default to 0.
 *
 * @serial
 * @see #getLocation()
 * @see #move(int, int)
 * @since 1.0
 */
 public int x;

 /**
 * The Y coordinate of this <code>Point</code>.
 * If no Y coordinate is set it will default to 0.
 *
 * @serial
 * @see #getLocation()
 * @see #move(int, int)
 * @since 1.0
 */
 public int y;

 /*
 * JDK 1.1 serialVersionUID
 */
 private static final long serialVersionUID = -5276940640259749850L;

 /**
 * Constructs and initializes a point at the origin
 * (0,&nbsp;0) of the coordinate space.
 * @since 1.1
 */
 public Point() {
 this(0, 0);
 }

 /**
 * Constructs and initializes a point with the same location as
 * the specified <code>Point</code> object.
 * @param p a point
 * @since 1.1
 */
 public Point(Point p) {
 this(p.x, p.y);
 }

 /**
 * Constructs and initializes a point at the specified
 * {@code (x,y)} location in the coordinate space.
 * @param x the X coordinate of the newly constructed <code>Point</code>
 * @param y the Y coordinate of the newly constructed <code>Point</code>
 * @since 1.0
 */
 public Point(int x, int y) {
 this.x = x;
 this.y = y;
 }

 /**
 * {@inheritDoc}
 * @since 1.2
 */
 public double getX() {
 return x;
 }

 /**
 * {@inheritDoc}
 * @since 1.2
 */
 public double getY() {
 return y;
 }

 /**
 * Returns the location of this point.
 * This method is included for completeness, to parallel the
 * <code>getLocation</code> method of <code>Component</code>.
 * @return a copy of this point, at the same location
 * @see java.awt.Component#getLocation
 * @see java.awt.Point#setLocation(java.awt.Point)
 * @see java.awt.Point#setLocation(int, int)
 * @since 1.1
 */
 @Transient
 public Point getLocation() {
 return new Point(x, y);
 }

 /**
 * Sets the location of the point to the specified location.
 * This method is included for completeness, to parallel the
 * <code>setLocation</code> method of <code>Component</code>.
 * @param p a point, the new location for this point
 * @see java.awt.Component#setLocation(java.awt.Point)
 * @see java.awt.Point#getLocation
 * @since 1.1
 */
 public void setLocation(Point p) {
 setLocation(p.x, p.y);
 }

 /**
 * Changes the point to have the specified location.
 * <p>
 * This method is included for completeness, to parallel the
 * <code>setLocation</code> method of <code>Component</code>.
 * Its behavior is identical with <code>move(int,&nbsp;int)</code>.
 * @param x the X coordinate of the new location
 * @param y the Y coordinate of the new location
 * @see java.awt.Component#setLocation(int, int)
 * @see java.awt.Point#getLocation
 * @see java.awt.Point#move(int, int)
 * @since 1.1
 */
 public void setLocation(int x, int y) {
 move(x, y);
 }

 /**
 * Sets the location of this point to the specified double coordinates.
 * The double values will be rounded to integer values.
 * Any number smaller than <code>Integer.MIN_VALUE</code>
 * will be reset to <code>MIN_VALUE</code>, and any number
 * larger than <code>Integer.MAX_VALUE</code> will be
 * reset to <code>MAX_VALUE</code>.
 *
 * @param x the X coordinate of the new location
 * @param y the Y coordinate of the new location
 * @see #getLocation
 */
 public void setLocation(double x, double y) {
 this.x = (int) Math.floor(x+0.5);
 this.y = (int) Math.floor(y+0.5);
 }

 /**
 * Moves this point to the specified location in the
 * {@code (x,y)} coordinate plane. This method
 * is identical with <code>setLocation(int,&nbsp;int)</code>.
 * @param x the X coordinate of the new location
 * @param y the Y coordinate of the new location
 * @see java.awt.Component#setLocation(int, int)
 */
 public void move(int x, int y) {
 this.x = x;
 this.y = y;
 }

 /**
 * Translates this point, at location {@code (x,y)},
 * by {@code dx} along the {@code x} axis and {@code dy}
 * along the {@code y} axis so that it now represents the point
 * {@code (x+dx,y+dy)}.
 *
 * @param dx the distance to move this point
 * along the X axis
 * @param dy the distance to move this point
 * along the Y axis
 */
 public void translate(int dx, int dy) {
 this.x += dx;
 this.y += dy;
 }

 /**
 * Determines whether or not two points are equal. Two instances of
 * <code>Point2D</code> are equal if the values of their
 * <code>x</code> and <code>y</code> member fields, representing
 * their position in the coordinate space, are the same.
 * @param obj an object to be compared with this <code>Point2D</code>
 * @return <code>true</code> if the object to be compared is
 * an instance of <code>Point2D</code> and has
 * the same values; <code>false</code> otherwise.
 */
 public boolean equals(Object obj) {
 if (obj instanceof Point) {
 Point pt = (Point)obj;
 return (x == pt.x) && (y == pt.y);
 }
 return super.equals(obj);
 }

 /**
 * Returns a string representation of this point and its location
 * in the {@code (x,y)} coordinate space. This method is
 * intended to be used only for debugging purposes, and the content
 * and format of the returned string may vary between implementations.
 * The returned string may be empty but may not be <code>null</code>.
 *
 * @return a string representation of this point
 */
 public String toString() {
 return getClass().getName() + "[x=" + x + ",y=" + y + "]";
 }
}