BarnesHutFA2Repulsion (JunGrapht Visualization 1.1 API)

java.lang.Object
- org.jungrapht.visualization.layout.algorithms.repulsion.StandardFA2Repulsion<V,BarnesHutFA2Repulsion<V>,BarnesHutFA2Repulsion.Builder<V>>
- - org.jungrapht.visualization.layout.algorithms.repulsion.BarnesHutFA2Repulsion<V>

Type Parameters:

V -

All Implemented Interfaces:

BarnesHutRepulsion<V,BarnesHutFA2Repulsion<V>,BarnesHutFA2Repulsion.Builder<V>>, StandardRepulsion<V,BarnesHutFA2Repulsion<V>,BarnesHutFA2Repulsion.Builder<V>>
```
public class BarnesHutFA2Repulsion<V>
extends StandardFA2Repulsion<V,BarnesHutFA2Repulsion<V>,BarnesHutFA2Repulsion.Builder<V>>
implements BarnesHutRepulsion<V,BarnesHutFA2Repulsion<V>,BarnesHutFA2Repulsion.Builder<V>>
```
Implementation of repulsion based on Barnes-Hut approximation. Recommended for large Graphs. Complexity is O(N*log(N)).

See Also:

"https://en.wikipedia.org/wiki/Barnes%E2%80%93Hut_simulation", "ForceAtlas2, a Continuous Graph Layout Algorithm for Handy Network Visualization Designed for the Gephi Software", "https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0098679"

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class BarnesHutFA2Repulsion.Builder<V>

Field Summary
- Fields inherited from class org.jungrapht.visualization.layout.algorithms.repulsion.StandardFA2Repulsion
  epsilon, frVertexData, initializer, kr, layoutModel, nodeMasses, nodeSizes, random, vertexSet

Constructor Summary

Constructors
Modifier Constructor Description

protected BarnesHutFA2Repulsion(BarnesHutFA2Repulsion.Builder<V> builder)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static BarnesHutFA2Repulsion.Builder`	`barnesHutBuilder()`	Deprecated.
`static BarnesHutFA2Repulsion.Builder`	`builder()`
`void`	`calculateRepulsion()`
`void`	`step()`	called from the layout algorithm on every step.

Methods inherited from class org.jungrapht.visualization.layout.algorithms.repulsion.StandardFA2Repulsion
getRandom, standardBuilder

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - BarnesHutFA2Repulsion
```
protected BarnesHutFA2Repulsion(BarnesHutFA2Repulsion.Builder<V> builder)
```
- Method Detail
  - builder
```
public static BarnesHutFA2Repulsion.Builder builder()
```
  - barnesHutBuilder
```
@Deprecated
public static BarnesHutFA2Repulsion.Builder barnesHutBuilder()
```
    Deprecated.
  - step
```
public void step()
```
    Description copied from interface: StandardRepulsion
    
    called from the layout algorithm on every step. this version is a noop but the subclass BarnesHut version rebuilds the tree on every step
    
    Specified by:
    
    step in interface StandardRepulsion<V,BarnesHutFA2Repulsion<V>,BarnesHutFA2Repulsion.Builder<V>>
    
    Overrides:
    
    step in class StandardFA2Repulsion<V,BarnesHutFA2Repulsion<V>,BarnesHutFA2Repulsion.Builder<V>>
  - calculateRepulsion
```
public void calculateRepulsion()
```
    Specified by:
    
    calculateRepulsion in interface StandardRepulsion<V,BarnesHutFA2Repulsion<V>,BarnesHutFA2Repulsion.Builder<V>>
    
    Overrides:
    
    calculateRepulsion in class StandardFA2Repulsion<V,BarnesHutFA2Repulsion<V>,BarnesHutFA2Repulsion.Builder<V>>