ch.randelshofer.tree.circlemap
Class Circle

java.lang.Object
  ch.randelshofer.tree.circlemap.Circle

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

CirclemapNode

public class Circle
extends java.lang.Object
implements java.lang.Cloneable

Describes a Circle by its radius and the location of its center.

Version:

1.0 Jan 17, 2008 Created.

Author:

Werner Randelshofer

Field Summary

double	cx
double	cy
double	radius

Constructor Summary

Circle()
Creates a new circle at location 0,0 and a radius of 0.

Circle(double cx, double cy, double r)
Creates a new circle with the specified coordinates and radius.

Method Summary

Circle	clone()
boolean	contains(Circle that) Returns true, if this circle contains that circle.
boolean	contains(Circle that, double error)
boolean	contains(double px, double py) Returns true, if this circle contains the specified point.
double	getCX() Returns the x-coordinate of the center of the circle.
double	getCY() Returns the y-coordinate of the center of the circle.
double	getIntersectionRadius(Circle that) Returns true, if this circle intersects that circle.
double	getRadius() Returns the radius of the circle.
boolean	intersects(Circle that) Returns true, if this circle intersects that circle.
boolean	intersects(Circle that, double error)
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

cx

public double cx

cy

public double cy

radius

public double radius

Constructor Detail

Circle

public Circle()

Creates a new circle at location 0,0 and a radius of 0.

Circle

public Circle(double cx,
              double cy,
              double r)

Creates a new circle with the specified coordinates and radius.

Method Detail

getRadius

public double getRadius()

Returns the radius of the circle.

getCX

public double getCX()

Returns the x-coordinate of the center of the circle.

Returns:

the x-coordinate of the center.

getCY

public double getCY()

Returns the y-coordinate of the center of the circle.

Returns:

the y-coordinate of the center.

intersects

public boolean intersects(Circle that)

Returns true, if this circle intersects that circle.

intersects

public boolean intersects(Circle that,
                          double error)

getIntersectionRadius

public double getIntersectionRadius(Circle that)

Returns true, if this circle intersects that circle.

contains

public boolean contains(Circle that)

Returns true, if this circle contains that circle.

contains

public boolean contains(Circle that,
                        double error)

contains

public boolean contains(double px,
                        double py)

Returns true, if this circle contains the specified point.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

clone

public Circle clone()

Overrides:

clone in class java.lang.Object