com.sun.javafx.geom

Class Point2D

java.lang.Object

com.sun.javafx.geom.Point2D

public class Point2D
extends java.lang.Object

The Point2D class defines a point representing a location in (x,y) coordinate space.

Field Summary

Fields

Modifier and Type	Field and Description
float	x The X coordinate of this Point2D.
float	y The Y coordinate of this Point2D.

Constructor Summary

Constructors

Constructor and Description
Point2D() Constructs and initializes a Point2D with coordinates (0, 0).
Point2D(float x, float y) Constructs and initializes a Point2D with the specified coordinates.

Method Summary

Modifier and Type	Method and Description
float	distance(float px, float py) Returns the distance from this Point2D to a specified point.
static float	distance(float x1, float y1, float x2, float y2) Returns the distance between two points.
float	distance(Point2D pt) Returns the distance from this Point2D to a specified Point2D.
float	distanceSq(float px, float py) Returns the square of the distance from this Point2D to a specified point.
static float	distanceSq(float x1, float y1, float x2, float y2) Returns the square of the distance between two points.
float	distanceSq(Point2D pt) Returns the square of the distance from this Point2D to a specified Point2D.
boolean	equals(java.lang.Object obj) Determines whether or not two points are equal.
int	hashCode() Returns the hashcode for this Point2D.
void	setLocation(float x, float 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.
java.lang.String	toString() Returns a String that represents the value of this Point2D.

Methods inherited from class java.lang.Object

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

Field Detail

x

public float x

The X coordinate of this Point2D.

y

public float y

The Y coordinate of this Point2D.

Constructor Detail

Point2D

public Point2D()

Constructs and initializes a Point2D with coordinates (0, 0).

Point2D

public Point2D(float x,
               float y)

Constructs and initializes a Point2D with the specified coordinates.

Parameters:

x - the X coordinate of the newly constructed Point2D

y - the Y coordinate of the newly constructed Point2D

Method Detail

setLocation

public void setLocation(float x,
                        float y)

Sets the location of this Point2D to the specified float coordinates.

Parameters:

x - the new X coordinate of this Point2D

y - the new Y coordinate of this Point2D

setLocation

public void setLocation(Point2D p)

Sets the location of this Point2D to the same coordinates as the specified Point2D object.

Parameters:

p - the specified Point2D to which to set this Point2D

distanceSq

public static float distanceSq(float x1,
                               float y1,
                               float x2,
                               float y2)

Returns the square of the distance between two points.

Parameters:

x1 - the X coordinate of the first specified point

y1 - the Y coordinate of the first specified point

x2 - the X coordinate of the second specified point

y2 - the Y coordinate of the second specified point

Returns:

the square of the distance between the two sets of specified coordinates.

distance

public static float distance(float x1,
                             float y1,
                             float x2,
                             float y2)

Returns the distance between two points.

Parameters:

x1 - the X coordinate of the first specified point

y1 - the Y coordinate of the first specified point

x2 - the X coordinate of the second specified point

y2 - the Y coordinate of the second specified point

Returns:

the distance between the two sets of specified coordinates.

distanceSq

public float distanceSq(float px,
                        float py)

Returns the square of the distance from this Point2D to a specified point.

Parameters:

px - the X coordinate of the specified point to be measured against this Point2D

py - the Y coordinate of the specified point to be measured against this Point2D

Returns:

the square of the distance between this Point2D and the specified point.

distanceSq

public float distanceSq(Point2D pt)

Returns the square of the distance from this Point2D to a specified Point2D.

Parameters:

pt - the specified point to be measured against this Point2D

Returns:

the square of the distance between this Point2D to a specified Point2D.

distance

public float distance(float px,
                      float py)

Returns the distance from this Point2D to a specified point.

Parameters:

px - the X coordinate of the specified point to be measured against this Point2D

py - the Y coordinate of the specified point to be measured against this Point2D

Returns:

the distance between this Point2D and a specified point.

distance

public float distance(Point2D pt)

Returns the distance from this Point2D to a specified Point2D.

Parameters:

pt - the specified point to be measured against this Point2D

Returns:

the distance between this Point2D and the specified Point2D.

hashCode

public int hashCode()

Returns the hashcode for this Point2D.

Overrides:

hashCode in class java.lang.Object

Returns:

a hash code for this Point2D.

equals

public boolean equals(java.lang.Object obj)

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.

Overrides:

equals in class java.lang.Object

Parameters:

obj - an object to be compared with this Point2D

Returns:

true if the object to be compared is an instance of Point2D and has the same values; false otherwise.

toString

public java.lang.String toString()

Returns a String that represents the value of this Point2D.

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this Point2D.