org.graphstream.ui.layout.springbox.implementations

Class LinLog

java.lang.Object

org.graphstream.stream.SourceBase

org.graphstream.ui.layout.springbox.BarnesHutLayout

org.graphstream.ui.layout.springbox.implementations.LinLog

All Implemented Interfaces:

AttributeSink, ElementSink, Pipe, Sink, Source, Layout

public class LinLog
extends BarnesHutLayout

Nested Class Summary

Nested classes/interfaces inherited from class org.graphstream.stream.SourceBase

SourceBase.ElementType

Constructor Summary

Constructors

Constructor and Description
LinLog() New "LinLog" 2D Barnes-Hut simulation.
LinLog(boolean is3D) New "LinLog" Barnes-Hut simulation.
LinLog(boolean is3D, java.util.Random randomNumberGenerator) New "LinLog" Barnes-Hut simulation.

Method Summary

Modifier and Type	Method and Description
void	compute() Method to call repeatedly to compute the layout.
void	configure(double a, double r, boolean edgeBased, double force)
java.lang.String	getLayoutAlgorithmName() Name of the layout algorithm.
NodeParticle	newNodeParticle(java.lang.String id) Factory method to create node particles.
void	setQuality(double qualityLevel) Set the overall quality level, a number between 0 and 1 with 1 the highest quality available, but often with a slower computation.

Methods inherited from class org.graphstream.ui.layout.springbox.BarnesHutLayout

clear, edgeAdded, edgeAttributeAdded, edgeAttributeChanged, edgeAttributeRemoved, edgeRemoved, freezeNode, getBarnesHutTheta, getCenterPoint, getEnergies, getForce, getGravityFactor, getHiPoint, getLastStepTime, getLowPoint, getNodeMovedCount, getQuality, getRandom, getSpatialIndex, getStabilization, getStabilizationLimit, getSteps, getViewZone, graphAttributeAdded, graphAttributeChanged, graphAttributeRemoved, graphCleared, is3D, moveNode, nodeAdded, nodeAttributeAdded, nodeAttributeChanged, nodeAttributeRemoved, nodeRemoved, particleAdded, particleAdded, particleAttributeChanged, particleMarked, particleMoved, particleRemoved, randomXInsideBounds, randomYInsideBounds, randomZInsideBounds, setBarnesHutTheta, setForce, setGravityFactor, setSendNodeInfos, setStabilizationLimit, shake, stepBegins, stepFinished

Methods inherited from class org.graphstream.stream.SourceBase

addAttributeSink, addElementSink, addSink, attributeSinks, clearAttributeSinks, clearElementSinks, clearSinks, elementSinks, removeAttributeSink, removeElementSink, removeSink, sendAttributeChangedEvent, sendAttributeChangedEvent, sendEdgeAdded, sendEdgeAdded, sendEdgeAttributeAdded, sendEdgeAttributeAdded, sendEdgeAttributeChanged, sendEdgeAttributeChanged, sendEdgeAttributeRemoved, sendEdgeAttributeRemoved, sendEdgeRemoved, sendEdgeRemoved, sendGraphAttributeAdded, sendGraphAttributeAdded, sendGraphAttributeChanged, sendGraphAttributeChanged, sendGraphAttributeRemoved, sendGraphAttributeRemoved, sendGraphCleared, sendGraphCleared, sendNodeAdded, sendNodeAdded, sendNodeAttributeAdded, sendNodeAttributeAdded, sendNodeAttributeChanged, sendNodeAttributeChanged, sendNodeAttributeRemoved, sendNodeAttributeRemoved, sendNodeRemoved, sendNodeRemoved, sendStepBegins, sendStepBegins

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.graphstream.stream.Source

addAttributeSink, addElementSink, addSink, clearAttributeSinks, clearElementSinks, clearSinks, removeAttributeSink, removeElementSink, removeSink

Constructor Detail

LinLog

public LinLog()

New "LinLog" 2D Barnes-Hut simulation.

LinLog

public LinLog(boolean is3D)

New "LinLog" Barnes-Hut simulation.

Parameters:

is3D - If true the simulation dimensions count is 3 else 2.

LinLog

public LinLog(boolean is3D,
              java.util.Random randomNumberGenerator)

New "LinLog" Barnes-Hut simulation.

Parameters:

is3D - If true the simulation dimensions count is 3 else 2.

randomNumberGenerator - The random number generator to use.

Method Detail

configure

public void configure(double a,
                      double r,
                      boolean edgeBased,
                      double force)

getLayoutAlgorithmName

public java.lang.String getLayoutAlgorithmName()

Description copied from interface: Layout

Name of the layout algorithm.

Specified by:

getLayoutAlgorithmName in interface Layout

Specified by:

getLayoutAlgorithmName in class BarnesHutLayout

setQuality

public void setQuality(double qualityLevel)

Description copied from interface: Layout

Set the overall quality level, a number between 0 and 1 with 1 the highest quality available, but often with a slower computation.

Specified by:

setQuality in interface Layout

Overrides:

setQuality in class BarnesHutLayout

Parameters:

qualityLevel - The quality level, a number between 0 and 1.

compute

public void compute()

Description copied from interface: Layout

Method to call repeatedly to compute the layout.

This method implements the layout algorithm proper. It must be called in a loop, until the layout stabilizes. You can know if the layout is stable by using the Layout.getNodeMovedCount() method that returns the number of node that have moved during the last call to step().

The listener is called by this method, therefore each call to step() will also trigger layout events, allowing to reproduce the layout process graphically for example. You can insert the listener only when the layout stabilized, and then call step() anew if you do not want to observe the layout process.

Specified by:

compute in interface Layout

Overrides:

compute in class BarnesHutLayout

newNodeParticle

public NodeParticle newNodeParticle(java.lang.String id)

Description copied from class: BarnesHutLayout

Factory method to create node particles.

Specified by:

newNodeParticle in class BarnesHutLayout

Parameters:

id - The identifier of the new node/particle.

Returns:

The new node/particle.