Package org.hipparchus.geometry.spherical.twod

Class Sphere2D

java.lang.Object

org.hipparchus.geometry.spherical.twod.Sphere2D

All Implemented Interfaces:

Serializable, Space

public class Sphere2D
extends Object
implements Serializable, Space

This class implements a two-dimensional sphere (i.e. the regular sphere).

We use here the topologists definition of the 2-sphere (see Sphere on MathWorld), i.e. the 2-sphere is the two-dimensional surface defined in 3D as x²+y²+z²=1.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final double	SMALLEST_TOLERANCE	Smallest tolerance that can be managed.

Method Summary

Modifier and Type	Method	Description
static void	checkTolerance(double tolerance)	Check tolerance against SMALLEST_TOLERANCE.
int	getDimension()	Get the dimension of the space.
static Sphere2D	getInstance()	Get the unique instance.
Sphere1D	getSubSpace()	Get the n-1 dimension subspace of this space.

Methods inherited from class java.lang.Object

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

Field Details

SMALLEST_TOLERANCE

public static final double SMALLEST_TOLERANCE

Smallest tolerance that can be managed.

Tolerances smaller than this value will generate exceptions.

Since:

1.4

Method Details

getInstance

public static Sphere2D getInstance()

Get the unique instance.

Returns:

the unique instance

checkTolerance

public static void checkTolerance(double tolerance)
                           throws MathIllegalArgumentException

Check tolerance against SMALLEST_TOLERANCE.

Parameters:

tolerance - tolerance to check

Throws:

MathIllegalArgumentException - if tolerance is smaller than SMALLEST_TOLERANCE

getDimension

public int getDimension()

Get the dimension of the space.

Specified by:

getDimension in interface Space

Returns:

dimension of the space

getSubSpace

public Sphere1D getSubSpace()

Get the n-1 dimension subspace of this space.

Specified by:

getSubSpace in interface Space

Returns:

n-1 dimension sub-space of this space

See Also:

• Space.getDimension()