GraphElementAccessor

All Known Implementing Classes:

ClosestShapePickSupport, LayoutLensShapePickSupport, RadiusGraphElementAccessor, RadiusPickSupport, ShapePickSupport, ViewLensShapePickSupport
```
public interface GraphElementAccessor<V,E>
```
Interface for coordinate-based selection of graph components.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	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).
`java.util.Collection<V>`	`getVertices(Layout<V,E> layout, java.awt.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
```
java.util.Collection<V> getVertices(Layout<V,E> layout,
                                    java.awt.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