org.globus.cog.gui.grapheditor.canvas.views.layouts
Interface GraphLayoutEngine

All Known Subinterfaces:

GraphLayoutEngine2

All Known Implementing Classes:

ExtendedSpringLayout, FlowLayout, HierarchicalLayout, PassiveLayout, PersistentLayoutEngine2, RadialFlowLayout, RadialHierarchicalLayout, RadialLayout, SpringLayout

public interface GraphLayoutEngine

Interface defining a layout engine for a graph.

Method Summary

Hashtable

layoutGraph(GraphInterface graph, Hashtable fixedNodes) This method takes a graph and a Hashtable with the nodes that cannot be moved and returns a Hashtable with the coordinates of the nodes after doing the layout.

Method Detail

layoutGraph

public Hashtable layoutGraph(GraphInterface graph,
                             Hashtable fixedNodes)

This method takes a graph and a Hashtable with the nodes that cannot be moved and returns a Hashtable with the coordinates of the nodes after doing the layout.

Parameters:

graph - The graph that needs to be layed out

fixedNodes - A Hashtable containing Node objects as keys, and Points as elements, which specify the coordinates of the non-movable nodes

Returns:

a Hashtable with Node objects as keys and Point objects as coordinates for the nodes.