infovis.graph.visualization.layout
Class SpringLayout

java.lang.Object
  infovis.graph.GraphProxy
      infovis.graph.visualization.layout.AbstractGraphLayout
          infovis.graph.visualization.layout.RandomGraphLayout
              infovis.graph.visualization.layout.BasicSpringLayout
                  infovis.graph.visualization.layout.SpringLayout

All Implemented Interfaces:

Graph, NodeLinkGraphLayout, Metadata, Constants, Layout

public class SpringLayout
extends BasicSpringLayout

Class SpringLayout

Version:

$Revision: 1.10 $

Author:

Jean-Daniel Fekete

InfoVis factory arguments:

GraphLayoutFactory "Spring"

Nested Class Summary

static interface	SpringLayout.LengthFunction If the edge is weighted, then override this method to show what the visualized length is.
static class	SpringLayout.UnitLengthFunction Returns all edges as the same length: the input value

Field Summary

static int	RANGE
static double	STRETCH
static SpringLayout.LengthFunction	UNITLENGTHFUNCTION

Fields inherited from class infovis.graph.visualization.layout.BasicSpringLayout

EPSILON

Fields inherited from class infovis.graph.visualization.layout.RandomGraphLayout

instance

Fields inherited from class infovis.graph.visualization.layout.AbstractGraphLayout

COLUMN_FIXED

Fields inherited from interface infovis.Graph

GRAPH_TYPE, GRAPH_TYPE_DIRECTED, GRAPH_TYPE_UNDIRECTED, NIL

Fields inherited from interface infovis.metadata.Constants

CONTRIBUTOR, COVERAGE, CREATOR, DATE, DESCRITION, FORMAT, IDENTIFIER, LANGUAGE, PUBLISHER, RELATION, RIGHTS, SOURCE, SUBJECT, TITLE, TYPE

Constructor Summary

SpringLayout()

SpringLayout(SpringLayout.LengthFunction fn)

Method Summary

void	calcAttraction(int e)
boolean	calcPosition(int v) Calculates the new position of the specified vertex.
void	calcRepulsion(int v1)
String	getName() Returns the Graph name.
void	initializeEdges()
void	initializeLayout(Rectangle2D bounds)
boolean	isFinished()

Methods inherited from class infovis.graph.visualization.layout.BasicSpringLayout

computeShapes, dist, dontMove, getMaxIterations, getX, getY, incrementLayout, isIncremental, setMaxIterations, setX, setY

Methods inherited from class infovis.graph.visualization.layout.RandomGraphLayout

getEngine, getInstance, initRect, nextDouble, setEngine, setInstance

Methods inherited from class infovis.graph.visualization.layout.AbstractGraphLayout

computeShapes, createRect, getBounds, getLinkShapes, getOrientation, getParent, getPreferredSize, getRectAt, getShapes, getVisualization, invalidate, setRectSizeAt, setShapeAt

Methods inherited from class infovis.graph.GraphProxy

addEdge, addGraphChangedListener, addVertex, clear, edgeIterator, edgeIterator, findEdge, getClientProperty, getDegree, getEdge, getEdgesCount, getEdgeTable, getFirstVertex, getGraph, getInDegree, getInEdgeAt, getMetadata, getOtherVertex, getOutDegree, getOutEdgeAt, getSecondVertex, getVertexTable, getVerticesCount, inEdgeIterator, isDirected, outEdgeIterator, removeEdge, removeGraphChangedListener, removeVertex, setDirected, setGraph, setName, vertexIterator

Methods inherited from class java.lang.Object

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

Field Detail

RANGE

public static final int RANGE

See Also:

Constant Field Values

STRETCH

public static final double STRETCH

See Also:

Constant Field Values

UNITLENGTHFUNCTION

public static final SpringLayout.LengthFunction UNITLENGTHFUNCTION

Constructor Detail

SpringLayout

public SpringLayout()

SpringLayout

public SpringLayout(SpringLayout.LengthFunction fn)

Method Detail

getName

public String getName()

Description copied from interface: Graph

Returns the Graph name.

Specified by:

getName in interface Graph

Specified by:

getName in interface Layout

Overrides:

getName in class GraphProxy

Returns:

the Graph name.

initializeLayout

public void initializeLayout(Rectangle2D bounds)

isFinished

public boolean isFinished()

Specified by:

isFinished in interface NodeLinkGraphLayout

Overrides:

isFinished in class AbstractGraphLayout

initializeEdges

public void initializeEdges()

calcRepulsion

public void calcRepulsion(int v1)

calcAttraction

public void calcAttraction(int e)

calcPosition

public boolean calcPosition(int v)

Description copied from class: BasicSpringLayout

Calculates the new position of the specified vertex.

Parameters:

v - the vertex

Returns:

true if the node has moved, false otherwise.