inra.ijpb.geometry

Class Ellipse

java.lang.Object

inra.ijpb.geometry.Ellipse

public class Ellipse
extends Object

Represents a 2D ellipse.

Author:

dlegland

Constructor Summary

Constructors

Constructor and Description
Ellipse(double xc, double yc, double radius1, double radius2, double theta) Creates a new ellipse.
Ellipse(Point2D center, double radius1, double radius2, double theta) Creates a new ellipse.

Method Summary

Modifier and Type	Method and Description
double	area()
Point2D	center()
static Point2D[]	centers(Ellipse[] ellipses) Initializes center array from ellipse array.
double	orientation()
double	radius1()
double	radius2()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Ellipse

public Ellipse(Point2D center,
               double radius1,
               double radius2,
               double theta)

Creates a new ellipse.

Parameters:

center - the center of the ellipse

radius1 - the length of the major semi-axis

radius2 - the length of the minor semi-axis

theta - the orientation of the ellipse, in degrees

Ellipse

public Ellipse(double xc,
               double yc,
               double radius1,
               double radius2,
               double theta)

Creates a new ellipse.

Parameters:

xc - the x-coordinate of the center of the ellipse

yc - the y-coordinate of the center of the ellipse

radius1 - the length of the major semi-axis

radius2 - the length of the minor semi-axis

theta - the orientation of the ellipse, in degrees

Method Detail

centers

public static final Point2D[] centers(Ellipse[] ellipses)

Initializes center array from ellipse array.

Parameters:

ellipses - an array of ellipses

Returns:

the array of points corresponding to the centers of the ellipses.

area

public double area()

Returns:

the area of the domain enclosed by this ellipse

center

public Point2D center()

Returns:

the center of this ellipse

radius1

public double radius1()

Returns:

the length of the major semi-axis

radius2

public double radius2()

Returns:

the length of the minor semi-axis

orientation

public double orientation()

Returns:

the orientation of the ellipse, in degrees

toString

public String toString()

Overrides:

toString in class Object