Package org.jppf.ui.monitoring.node.graph

Class RadialLayout

java.lang.Object
edu.uci.ics.jung.algorithms.layout.AbstractLayout<org.jppf.client.monitoring.topology.AbstractTopologyComponent,Number>
org.jppf.ui.monitoring.node.graph.RadialLayout
All Implemented Interfaces:
edu.uci.ics.jung.algorithms.layout.Layout<org.jppf.client.monitoring.topology.AbstractTopologyComponent,Number>, org.apache.commons.collections15.Transformer<org.jppf.client.monitoring.topology.AbstractTopologyComponent,Point2D>
public class RadialLayout extends edu.uci.ics.jung.algorithms.layout.AbstractLayout<org.jppf.client.monitoring.topology.AbstractTopologyComponent,Number>
Radial layout for JPPF topology graph.

This layout places all the driver vertices on a circle centered on the current view. The node vertices for each driver are then placed in a half-circle centered on the driver vertex, in the angle range [driverAngle - PI/2, driverAngle + PI/2], where driverAngle is the angle formed by the line segment between the center of the view and the driver vertex, with regards to the coordinates system.

This is not a generic layout algorithm as it assumes the graph to have the topological properties of a JPPF Grid:

  • drivers are roots in the graph
  • drivers can be linked together (i.e. cyclic graph)
  • each node is only attached to a single driver (i.e. "terminal vertices")
Author:
Laurent Cohen

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final double
    DEFAULT_RADIUS_FACTOR
    The default radius factor to use when none is specified.

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

    graph, initialized, locations, size

  • Constructor Summary

    Constructors
    Constructor
    Description
    RadialLayout(edu.uci.ics.jung.graph.Graph<org.jppf.client.monitoring.topology.AbstractTopologyComponent,Number> graph)
    Initialize this layout with the specified graph.
    RadialLayout(edu.uci.ics.jung.graph.Graph<org.jppf.client.monitoring.topology.AbstractTopologyComponent,Number> graph, double radiusFactor)
    Initialize this layout with the specified graph and radius factor.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    initialize()
     
    void
    reset()
     

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

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

    Methods inherited from class java.lang.Object

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

  • Field Details

    • DEFAULT_RADIUS_FACTOR

      public static final double DEFAULT_RADIUS_FACTOR
      The default radius factor to use when none is specified.
      See Also:

  • Constructor Details

    • RadialLayout

      public RadialLayout(edu.uci.ics.jung.graph.Graph<org.jppf.client.monitoring.topology.AbstractTopologyComponent,Number> graph)
      Initialize this layout with the specified graph.
      Parameters:
      graph - the graph to layout.

    • RadialLayout

      public RadialLayout(edu.uci.ics.jung.graph.Graph<org.jppf.client.monitoring.topology.AbstractTopologyComponent,Number> graph, double radiusFactor)
      Initialize this layout with the specified graph and radius factor.
      Parameters:
      graph - the graph to layout.
      radiusFactor - radius factor to use.

  • Method Details

    • initialize

      public void initialize()

    • reset

      public void reset()