edu.uci.ics.jung.algorithms.layout

Interface GraphElementAccessor<V,E>

All Known Implementing Classes:

RadiusGraphElementAccessor

public interface GraphElementAccessor<V,E>

Interface for coordinate-based selection of graph components.

Author:

Tom Nelson, Joshua O'Madadhain

Method Summary

Modifier and Type	Method and Description
E	getEdge(Layout<V,E> layout, double x, double y)
V	getVertex(Layout<V,E> layout, double x, double y) Returns the vertex, if any, associated with (x, y).
Collection<V>	getVertices(Layout<V,E> layout, Shape rectangle)

Method Detail

getVertex

V getVertex(Layout<V,E> layout,
            double x,
            double y)

Returns the vertex, if any, associated with (x, y).

Parameters:

layout - the layout instance that records the positions for all vertices

x - the x coordinate of the pick point

y - the y coordinate of the pick point

Returns:

the vertex associated with (x, y)

getVertices

Collection<V> getVertices(Layout<V,E> layout,
                          Shape rectangle)

Parameters:

layout - the layout instance that records the positions for all vertices

rectangle - the region in which the returned vertices are located

Returns:

the vertices whose locations given by layout are contained within rectangle

getEdge

E getEdge(Layout<V,E> layout,
          double x,
          double y)

Parameters:

layout - the context in which the location is defined

x - the x coordinate of the location

y - the y coordinate of the location

Returns:

an edge which is associated with the location (x,y) as given by layout, generally by reference to the edge's endpoints