ProGAL.geom2d

Class Circle

java.lang.Object

ProGAL.geom2d.Circle

All Implemented Interfaces:

Shape

public class Circle
extends java.lang.Object
implements Shape

Field Summary

Fields

Modifier and Type	Field and Description
protected Point	center
protected double	radius

Constructor Summary

Constructors

Constructor and Description
Circle(Circle c) Constructs a circle that is a copy of a given circle
Circle(Circle c1, Circle c2) Creates smallest circle containing two given circles
Circle(Circle circle1, Circle circle2, Circle circle3)
Circle(Point center, double radius) Construct a circle with the given center and radius.
Circle(Point p1, Point p2) Constructs a circle through two given points and wth their midpoint as the center
Circle(Point a, Point b, Point c) Constructs a circle through 3 given points.
Circle(Triangle tri)

Method Summary

Modifier and Type	Method and Description
Point	center()
boolean	contains(Circle c)
boolean	contains(Point p)
boolean	contains(Point p, double eps)
java.lang.Double	enteringAngle(Point p, Circle C, boolean ccw)
java.lang.Double	enteringAngle(Point p, Line L, boolean ccw)
java.lang.Double	exitingAngle(Point p, Circle C, boolean ccw)
Point	getCenter() Get the geometric center of the shape.
double	getRadius()
Point[]	intersections(Circle c) returns 0-2 intersections of this circle with another circle
Point[]	intersections(Line l) returns 0-2 intersections of this circle with a line, source: http://mathworld.wolfram.com/Circle-LineIntersection.html some odd errors corrected 01-09-2013 - PW
boolean	isEmpty(java.util.List<Point> points, double eps) returns TRUE if the interior of the circle (for a given eps reduction of the radius) is empty
static Circle	minimumEnclosingCircle_bruteforce(java.util.List<Point> points) Deprecated.
static Circle	minimumEnclosingCircle_Welzl(java.util.List<Point> points)
boolean	onCircle(Point p)
void	setCenter(Point p)
void	setRadius(double r)
void	toConsole()
void	toConsole(int dec)
void	toScene(J2DScene scene)
void	toScene(J2DScene scene, java.awt.Color clr)
java.lang.String	toString()
java.lang.String	toString(int dec)
void	translate(Vector v)

Methods inherited from class java.lang.Object

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

Field Detail

center

protected Point center

radius

protected double radius

Constructor Detail

Circle

public Circle(Point center,
              double radius)

Construct a circle with the given center and radius.

Circle

public Circle(Circle c)

Constructs a circle that is a copy of a given circle

Circle

public Circle(Point p1,
              Point p2)

Constructs a circle through two given points and wth their midpoint as the center

Circle

public Circle(Point a,
              Point b,
              Point c)

Constructs a circle through 3 given points.

Circle

public Circle(Circle c1,
              Circle c2)

Creates smallest circle containing two given circles

Circle

public Circle(Circle circle1,
              Circle circle2,
              Circle circle3)

Circle

public Circle(Triangle tri)

Method Detail

center

public Point center()

getRadius

public double getRadius()

setCenter

public void setCenter(Point p)

setRadius

public void setRadius(double r)

translate

public void translate(Vector v)

enteringAngle

public java.lang.Double enteringAngle(Point p,
                                      Circle C,
                                      boolean ccw)

exitingAngle

public java.lang.Double exitingAngle(Point p,
                                     Circle C,
                                     boolean ccw)

enteringAngle

public java.lang.Double enteringAngle(Point p,
                                      Line L,
                                      boolean ccw)

intersections

public Point[] intersections(Circle c)

returns 0-2 intersections of this circle with another circle

intersections

public Point[] intersections(Line l)

returns 0-2 intersections of this circle with a line, source: http://mathworld.wolfram.com/Circle-LineIntersection.html some odd errors corrected 01-09-2013 - PW

minimumEnclosingCircle_Welzl

public static Circle minimumEnclosingCircle_Welzl(java.util.List<Point> points)

isEmpty

public boolean isEmpty(java.util.List<Point> points,
                       double eps)

returns TRUE if the interior of the circle (for a given eps reduction of the radius) is empty

minimumEnclosingCircle_bruteforce

@Deprecated
public static Circle minimumEnclosingCircle_bruteforce(java.util.List<Point> points)

Deprecated.

contains

public boolean contains(Point p)

Specified by:

contains in interface Shape

contains

public boolean contains(Point p,
                        double eps)

contains

public boolean contains(Circle c)

onCircle

public boolean onCircle(Point p)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(int dec)

toConsole

public void toConsole()

toConsole

public void toConsole(int dec)

toScene

public void toScene(J2DScene scene)

toScene

public void toScene(J2DScene scene,
                    java.awt.Color clr)

getCenter

public Point getCenter()

Description copied from interface: Shape

Get the geometric center of the shape. The center of a shape can be interpreted in many ways (center of mass, circumcenter, inscribed center etc.). No strict requirement is given here, but typically the circumcenter should be supplied. This method is most prominently used to find the average center-position of a collection of shapes such that scene-viewers can be centered on the scene.

Specified by:

getCenter in interface Shape