Module imp2d

Package de.grogra.imp2d.layout

Class DavidsonHarelLayout

java.lang.Object

de.grogra.persistence.ShareableBase

de.grogra.imp2d.layout.Layout

de.grogra.imp2d.layout.ForceBasedLayout

de.grogra.imp2d.layout.DavidsonHarelLayout

All Implemented Interfaces:

Manageable, Shareable

public class DavidsonHarelLayout
extends ForceBasedLayout

A DavidsonHarelLayout computes a graph layout based on the force based DavidsonHarel model.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DavidsonHarelLayout.Type

Nested classes/interfaces inherited from class de.grogra.imp2d.layout.ForceBasedLayout

ForceBasedLayout.FBAlgorithm

Nested classes/interfaces inherited from class de.grogra.imp2d.layout.Layout

Layout.Algorithm

Field Summary

Fields

Modifier and Type	Field	Description
static final DavidsonHarelLayout.Type	$TYPE
static final SCOType.Field	attractionFactor$FIELD
static final SCOType.Field	repulsionFactor$FIELD

Fields inherited from class de.grogra.imp2d.layout.ForceBasedLayout

accuracy$FIELD, connectedNodesSize, count$FIELD, displayTransformation$FIELD, nodesSize, relaxation$FIELD, startWithRandom$FIELD

Fields inherited from class de.grogra.imp2d.layout.Layout

fit$FIELD, transformationSteps$FIELD

Constructor Summary

Constructors

Constructor	Description
DavidsonHarelLayout()

Method Summary

Modifier and Type	Method	Description
protected void	computeForce(Edge e, Vector2f force)	Computes the attraction force of two nodes connected with Edge e
protected void	computeForce(Node s, Node t, Vector2f force)	Computes the repelling force of two nodes s and t
ManageableType	getManageableType()
protected void	setRandomPosition(Node nodeTemp, Random rnd)	Calculating the inital positions of the nodes

Methods inherited from class de.grogra.imp2d.layout.ForceBasedLayout

createAlgorithm, setStartWithRandom

Methods inherited from class de.grogra.imp2d.layout.Layout

getParam, invoke, setParam, setRedraw, setTransformationSteps

Methods inherited from class de.grogra.persistence.ShareableBase

addReference, appendReferencesTo, fieldModified, getProvider, getStamp, initProvider, manageableReadResolve, manageableWriteReplace, removeReference

Methods inherited from class java.lang.Object

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

Field Details

$TYPE

public static final DavidsonHarelLayout.Type $TYPE

attractionFactor$FIELD

public static final SCOType.Field attractionFactor$FIELD

repulsionFactor$FIELD

public static final SCOType.Field repulsionFactor$FIELD

Constructor Details

DavidsonHarelLayout

public DavidsonHarelLayout()

Method Details

setRandomPosition

protected void setRandomPosition(Node nodeTemp,
 Random rnd)

Calculating the inital positions of the nodes

Specified by:

setRandomPosition in class ForceBasedLayout

computeForce

protected void computeForce(Node s,
 Node t,
 Vector2f force)

Computes the repelling force of two nodes s and t

Specified by:

computeForce in class ForceBasedLayout

Parameters:

s - the source node

t - the target node

force - the force in the direction from s to t has to be placed in here

computeForce

protected void computeForce(Edge e,
 Vector2f force)

Computes the attraction force of two nodes connected with Edge e

Specified by:

computeForce in class ForceBasedLayout

Parameters:

e - an edge

force - the force in the direction from edge.source to edge.target has to be placed in here

getManageableType

public ManageableType getManageableType()