edu.uci.ics.jung.visualization
Class FRLayout

java.lang.Object
  edu.uci.ics.jung.visualization.AbstractLayout
      edu.uci.ics.jung.visualization.FRLayout

All Implemented Interfaces:

Layout, LayoutMutable

public class FRLayout

extends AbstractLayout

implements LayoutMutable

Implements the Fruchterman-Reingold algorithm for node layout.

Author:

Scott White, Yan-Biao Boey, Danyel Fisher

Nested Class Summary

static class

FRLayout.FRVertexData

Constructor Summary

FRLayout(Graph g)

Method Summary

void	advancePositions() Moves the iteration forward one notch, calculation attraction and repulsion between vertices and edges and cooling the temperature.
void	calcAttraction(Edge e)
void	calcPositions(Vertex v)
void	calcRepulsion(Vertex v1)
void	forceMove(Vertex picked, int x, int y) Forces a node to be moved to location x,y
FRLayout.FRVertexData	getFRData(Vertex v)
java.lang.Object	getKey() Returns a visualization-specific key (that is, specific both to this instance and AbstractLayout) that can be used to access UserData related to the AbstractLayout.
java.lang.String	getStatus() Returns the current temperature and number of iterations elapsed, as a string.
boolean	incrementsAreDone() Returns true once the current iteration has passed the maximum count, MAX_ITERATIONS.
boolean	isIncremental() This one is an incremental visualization.
void	setMaxIterations(int maxIterations)
void	update()

Methods inherited from class edu.uci.ics.jung.visualization.AbstractLayout

applyFilter, dontMove, getBaseKey, getCoordinates, getCurrentSize, getEdge, getEdge, getGraph, getVertex, getVertex, getVisibleEdges, getVisibleVertices, getX, getY, initialize, lockVertex, resize, restart, unlockVertex

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.uci.ics.jung.visualization.Layout

applyFilter, getCurrentSize, getGraph, getVertex, getVertex, getVisibleEdges, getVisibleVertices, getX, getY, initialize, lockVertex, resize, restart, unlockVertex

Constructor Detail

FRLayout

public FRLayout(Graph g)

Method Detail

update

public void update()

Specified by:

update in interface LayoutMutable

getStatus

public java.lang.String getStatus()

Returns the current temperature and number of iterations elapsed, as a string.

Specified by:

getStatus in interface Layout

Overrides:

getStatus in class AbstractLayout

forceMove

public void forceMove(Vertex picked,
                      int x,
                      int y)

Description copied from interface: Layout

Forces a node to be moved to location x,y

Specified by:

forceMove in interface Layout

Overrides:

forceMove in class AbstractLayout

getKey

public java.lang.Object getKey()

Returns a visualization-specific key (that is, specific both to this instance and AbstractLayout) that can be used to access UserData related to the AbstractLayout.

advancePositions

public void advancePositions()

Moves the iteration forward one notch, calculation attraction and repulsion between vertices and edges and cooling the temperature.

Specified by:

advancePositions in interface Layout

Specified by:

advancePositions in class AbstractLayout

See Also:

Layout.advancePositions()

calcPositions

public void calcPositions(Vertex v)

calcAttraction

public void calcAttraction(Edge e)

calcRepulsion

public void calcRepulsion(Vertex v1)

setMaxIterations

public void setMaxIterations(int maxIterations)

getFRData

public FRLayout.FRVertexData getFRData(Vertex v)

isIncremental

public boolean isIncremental()

This one is an incremental visualization.

Specified by:

isIncremental in interface Layout

incrementsAreDone

public boolean incrementsAreDone()

Returns true once the current iteration has passed the maximum count, MAX_ITERATIONS.

Specified by:

incrementsAreDone in interface Layout