Sphere2D (Apache Commons Math 3.6.1 API)

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java.lang.Object
- org.apache.commons.math3.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.

Since:

3.3

See Also:
Serialized Form

Method Summary

Methods
Modifier and Type	Method and Description
`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

- Method Detail
  - getInstance
```
public static Sphere2D getInstance()
```
    Get the unique instance.
    
    Returns:
    the unique instance
  - 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()

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