edu.uci.ics.jung.algorithms.layout
Class SpringLayout2<V,E>

java.lang.Object
  edu.uci.ics.jung.algorithms.layout.AbstractLayout<V,E>
      edu.uci.ics.jung.algorithms.layout.SpringLayout<V,E>
          edu.uci.ics.jung.algorithms.layout.SpringLayout2<V,E>

All Implemented Interfaces:

Layout<V,E>, IterativeContext, org.apache.commons.collections15.Transformer<V,Point2D>

public class SpringLayout2<V,E>
extends SpringLayout<V,E>

The SpringLayout package represents a visualization of a set of nodes. The SpringLayout, which is initialized with a Graph, assigns X/Y locations to each node. When called relax(), the SpringLayout moves the visualization forward one step.

Author:

Danyel Fisher, Joshua O'Madadhain

Nested Class Summary

Nested classes/interfaces inherited from class edu.uci.ics.jung.algorithms.layout.SpringLayout

SpringLayout.SpringDimensionChecker, SpringLayout.SpringVertexData

Field Summary

protected int	averageCounter
protected Point2D	averageDelta
protected int	currentIteration
protected boolean	done
protected int	loopCountMax

Fields inherited from class edu.uci.ics.jung.algorithms.layout.SpringLayout

force_multiplier, lengthFunction, repulsion_range_sq, springVertexData, stretch

Fields inherited from class edu.uci.ics.jung.algorithms.layout.AbstractLayout

graph, initialized, locations, size

Constructor Summary

SpringLayout2(Graph<V,E> g)
Constructor for a SpringLayout for a raw graph with associated dimension--the input knows how big the graph is.

SpringLayout2(Graph<V,E> g, org.apache.commons.collections15.Transformer<E,Integer> length_function)
Constructor for a SpringLayout for a raw graph with associated component.

Method Summary

boolean	done() For now, we pretend it never finishes.
protected void	moveNodes()
void	step() Relaxation step.

Methods inherited from class edu.uci.ics.jung.algorithms.layout.SpringLayout

calculateRepulsion, getForceMultiplier, getRepulsionRange, getStretch, initialize, isIncremental, relaxEdges, reset, setForceMultiplier, setRepulsionRange, setSize, setStretch

Methods inherited from class edu.uci.ics.jung.algorithms.layout.AbstractLayout

getGraph, getSize, getX, getY, isLocked, lock, lock, offsetVertex, setGraph, setInitializer, setLocation, setLocation, transform

Methods inherited from class java.lang.Object

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

Field Detail

currentIteration

protected int currentIteration

averageCounter

protected int averageCounter

loopCountMax

protected int loopCountMax

done

protected boolean done

averageDelta

protected Point2D averageDelta

Constructor Detail

SpringLayout2

public SpringLayout2(Graph<V,E> g)

Constructor for a SpringLayout for a raw graph with associated dimension--the input knows how big the graph is. Defaults to the unit length function.

SpringLayout2

public SpringLayout2(Graph<V,E> g,
                     org.apache.commons.collections15.Transformer<E,Integer> length_function)

Constructor for a SpringLayout for a raw graph with associated component.

Parameters:

g - the Graph to lay out

length_function - provides a length for each edge

Method Detail

step

public void step()

Relaxation step. Moves all nodes a smidge.

Specified by:

step in interface IterativeContext

Overrides:

step in class SpringLayout<V,E>

moveNodes

protected void moveNodes()

Overrides:

moveNodes in class SpringLayout<V,E>

done

public boolean done()

Description copied from class: SpringLayout

For now, we pretend it never finishes.

Specified by:

done in interface IterativeContext

Overrides:

done in class SpringLayout<V,E>