csjs.shapes
Class GeoCircle

java.lang.Object
  |
  +--csjs.shapes.Shape
        |
        +--csjs.shapes.GeoShape
              |
              +--csjs.shapes.GeoCircle

All Implemented Interfaces:

CircleADT, GeoCircleADT, ShapeADT

public class GeoCircle

extends GeoShape

implements GeoCircleADT

A 'geocircle' a circle located in 2-space

Constructor Summary

GeoCircle(double r, csjs.math.Point p)
Create a circle.

Method Summary

double	area() Returns the area of this geocircle.
double	diameter() Returns the diameter of this geocircle.
double	distance(GeoCircle gc) Returns the Cartesian distance between the receiving point and that given by the parameter.
boolean	equals(GeoCircle gc) Returns true if the revieving geocircle and the parameter geocircle are equal; false if not.
void	expand(double a) Expand this geocircle by augmenting its radius by the given number.
double	perimeter() Returns the circumference of this geocircle.
csjs.math.Point	point() Returns the point of this geocircle.
double	radius() Returns the radius of this geocircle.
void	resize(double s) Set the radius of the geocircle to the given number
void	set(csjs.math.Point p) Sets the coordinates of the point
void	shrink(double a) Shrink this geocircle by diminishing its radius by the given number.
java.lang.String	toString() Write a description of this geocircle to the standard output file.

Methods inherited from class java.lang.Object

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

Constructor Detail

GeoCircle

public GeoCircle(double r,
                 csjs.math.Point p)

Create a circle.

Parameters:

r - the radius of the geocircle

p - the point of the geocircle

Method Detail

radius

public double radius()

Returns the radius of this geocircle.

Specified by:

radius in interface CircleADT

point

public csjs.math.Point point()

Returns the point of this geocircle.

Specified by:

point in interface GeoCircleADT

diameter

public double diameter()

Returns the diameter of this geocircle.

Specified by:

diameter in interface CircleADT

area

public double area()

Returns the area of this geocircle.

Specified by:

area in interface ShapeADT

perimeter

public double perimeter()

Returns the circumference of this geocircle.

Specified by:

perimeter in interface ShapeADT

toString

public java.lang.String toString()

Write a description of this geocircle to the standard output file.

Specified by:

toString in interface ShapeADT

Overrides:

toString in class java.lang.Object

expand

public void expand(double a)

Expand this geocircle by augmenting its radius by the given number.

Specified by:

expand in interface CircleADT

Parameters:

a - amount by which the geocircle is expanded

shrink

public void shrink(double a)

Shrink this geocircle by diminishing its radius by the given number.

Specified by:

shrink in interface CircleADT

Parameters:

a - amount by which the geocircle is contracted

resize

public void resize(double s)

Set the radius of the geocircle to the given number

Specified by:

resize in interface CircleADT

Parameters:

s - size, in terms of radius, to which the geocircle is set

distance

public double distance(GeoCircle gc)

Returns the Cartesian distance between the receiving point and that given by the parameter.

Specified by:

distance in interface GeoCircleADT

equals

public boolean equals(GeoCircle gc)

Returns true if the revieving geocircle and the parameter geocircle are equal; false if not.

Specified by:

equals in interface GeoCircleADT

Parameters:

gc - the "other" geocircle

set

public void set(csjs.math.Point p)

Sets the coordinates of the point

Specified by:

set in interface GeoCircleADT

Parameters:

p - the point