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java.lang.Objectedu.uci.ics.jung.visualization.AbstractLayout
edu.uci.ics.jung.visualization.contrib.KKLayout
Implements the Kamada-Kawai algorithm for node layout. Does not respect filter calls, and sometimes crashes when the view changes to it.
Field Summary | |
protected double |
diameter
The diameter of the visible graph. |
protected Distance |
distance
Retrieves graph distances between vertices of the visible graph |
Fields inherited from class edu.uci.ics.jung.visualization.AbstractLayout |
changeSupport, vertex_locations |
Constructor Summary | |
KKLayout(Graph g)
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KKLayout(Graph g,
Distance distance)
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Method Summary | |
void |
adjustForGravity()
Shift all vertices so that the center of gravity is located at the center of the screen. |
void |
advancePositions()
Implementors must override this method in order to create a Layout. |
boolean |
getAdjustForGravity()
Returns true if gravity point adjusting is enabled. |
boolean |
getExchangeVertices()
Returns true if the local minimum escape technique by exchanging vertices is enabled. |
String |
getStatus()
Returns the current status of the sytem, or null if there is no particular status to report. Useful for reporting things like number of iterations passed, temperature, and so on.By default, an AbstractLayout returns null for its status.By default, an AbstractLayout returns null for its status. |
boolean |
incrementsAreDone()
Returns true once the current iteration has passed the maximum count. |
protected void |
initialize_local_vertex(Vertex v)
Initializes the local information on a single vertex. |
protected void |
initialize_local()
Initializes all local information, and is called immediately within the initialize() process. |
protected void |
initializeLocations()
This method calls initialize_local_vertex for each vertex, and also adds initial coordinate information for each vertex. |
boolean |
isIncremental()
This one is an incremental visualization. |
void |
setAdjustForGravity(boolean on)
Enable or disable gravity point adjusting. |
void |
setDisconnectedDistanceMultiplier(double disconnected_multiplier)
Sets a multiplicative factor that specifies the fraction of the graph's diameter to be used as the inter-vertex distance between disconnected vertices. |
void |
setExchangeVertices(boolean on)
Enable or disable the local minimum escape technique by exchanging vertices. |
void |
setLengthFactor(double length_factor)
Sets a multiplicative factor which partly specifies the "preferred" length of an edge (L). |
void |
setMaxIterations(int maxIterations)
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Methods inherited from class edu.uci.ics.jung.visualization.AbstractLayout |
addChangeListener, applyFilter, dontMove, fireStateChanged, forceMove, getAVertex, getBaseKey, getChangeListeners, getCoordinates, getCurrentSize, getEdge, getEdge, getGraph, getLocation, getVertex, getVertex, getVertexIterator, getVisibleEdges, getVisibleGraph, getVisibleVertices, getX, getY, initialize, initialize, initializeLocation, isLocked, lockVertex, offsetVertex, postInitialize, removeChangeListener, resize, restart, unlockVertex |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
protected Distance distance
protected double diameter
Constructor Detail |
public KKLayout(Graph g)
public KKLayout(Graph g, Distance distance)
Method Detail |
public void setLengthFactor(double length_factor)
public void setDisconnectedDistanceMultiplier(double disconnected_multiplier)
public String getStatus()
AbstractLayout
getStatus
in interface Layout
getStatus
in class AbstractLayout
public void setMaxIterations(int maxIterations)
public boolean isIncremental()
public boolean incrementsAreDone()
protected void initialize_local()
AbstractLayout
initialize_local
in class AbstractLayout
protected void initializeLocations()
AbstractLayout
initializeLocations
in class AbstractLayout
protected void initialize_local_vertex(Vertex v)
AbstractLayout
initialize_local_vertex
in class AbstractLayout
public void advancePositions()
AbstractLayout
Note that "locked" vertices are not to be moved; however, it is the policy of the visualization to decide how to handle them, and what to do with the vertices around them. Prototypical code might include a clipping like
for (Iterator i = getVertices().iterator(); i.hasNext() ) { Vertex v = (Vertex) i.next(); if (! dontmove.contains( v ) ) { ... // handle the node } else { // ignore the node } }
advancePositions
in interface Layout
advancePositions
in class AbstractLayout
Layout.advancePositions()
public void adjustForGravity()
public void setAdjustForGravity(boolean on)
public boolean getAdjustForGravity()
public void setExchangeVertices(boolean on)
public boolean getExchangeVertices()
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