cse1030.drawing

Class Point2D

java.lang.Object

cse1030.drawing.Point2D

public final class Point2D
extends Object

A class that represents two dimensional points. A Point2D has an x and a y coordinate.

Author:

CSE1030Z

Constructor Summary

Constructors

Constructor and Description
Point2D() Creates a point with coordinates (0.0, 0.0).
Point2D(double x, double y) Creates a point with coordinates (x, y).
Point2D(Point2D other) Creates a point that has the same coordinates as another point.

Method Summary

Methods

Modifier and Type	Method and Description
double	distanceTo(Point2D other) Returns the distance between this point and some other point.
boolean	equals(Object obj) Compare this point to another object for equality.
double	getX() Get the x coordinate point.
double	getY() Get the y coordinate of the point.
int	hashCode() Computes a hash code for this point.
void	setX(double x) Set the x coordinate of the point.
void	setY(double y) Set the y coordinate of the point.
String	toString() Returns a string representation of the point.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Point2D

public Point2D()

Creates a point with coordinates (0.0, 0.0).

Point2D

public Point2D(Point2D other)

Creates a point that has the same coordinates as another point.

Parameters:

other - the Point2D object to copy

Point2D

public Point2D(double x,
       double y)

Creates a point with coordinates (x, y).

Method Detail

getX

public double getX()

Get the x coordinate point.

Returns:

the x coordinate of the point

setX

public void setX(double x)

Set the x coordinate of the point.

Parameters:

x - the new value for the x coordinate

getY

public double getY()

Get the y coordinate of the point.

Returns:

the y coordinate of the point

setY

public void setY(double y)

Set the y coordinate of the point.

Parameters:

y - the new value for the y coordinate

hashCode

public int hashCode()

Computes a hash code for this point.

Overrides:

hashCode in class Object

Returns:

a hash code for this point

equals

public boolean equals(Object obj)

Compare this point to another object for equality. The result is true if and only if the argument is not null and is a Point2D object having the same coordinates as this point.

Overrides:

equals in class Object

Parameters:

obj - the object to compare this point against

Returns:

true if the given object represents a Point2D equivalent to this point, false otherwise

toString

public String toString()

Returns a string representation of the point. The returned string has the form:

(X, Y) where X is the x coordinate of the point and Y is the y coordinate of the point.

Overrides:

toString in class Object

Returns:

a string representation of the point

distanceTo

public double distanceTo(Point2D other)

Returns the distance between this point and some other point.

Parameters:

other - the other point to compute the distance from this point

Returns:

the distance between this point and some other point