edu.uci.ics.jung.visualization.picking

Class LayoutLensShapePickSupport<V,E>

java.lang.Object

edu.uci.ics.jung.visualization.picking.ShapePickSupport<V,E>

edu.uci.ics.jung.visualization.picking.LayoutLensShapePickSupport<V,E>

All Implemented Interfaces:

GraphElementAccessor<V,E>

public class LayoutLensShapePickSupport<V,E>
extends ShapePickSupport<V,E>
implements GraphElementAccessor<V,E>

ShapePickSupport provides access to Vertices and EdgeType based on their actual shapes.

Author:

Tom Nelson

Nested Class Summary

Nested classes/interfaces inherited from class edu.uci.ics.jung.visualization.picking.ShapePickSupport

ShapePickSupport.Style

Field Summary

Fields inherited from class edu.uci.ics.jung.visualization.picking.ShapePickSupport

pickSize, style, vv

Constructor Summary

Constructors

Constructor and Description
LayoutLensShapePickSupport(VisualizationServer<V,E> vv)
LayoutLensShapePickSupport(VisualizationServer<V,E> vv, float pickSize)

Method Summary

Modifier and Type	Method and Description
E	getEdge(Layout<V,E> layout, double x, double y) Returns an edge whose shape intersects the 'pickArea' footprint of the passed x,y, coordinates.
V	getVertex(Layout<V,E> layout, double x, double y) Returns the vertex, if any, whose shape contains (x, y).
Collection<V>	getVertices(Layout<V,E> layout, Shape rectangle) Returns the vertices whose layout coordinates are contained in Shape.

Methods inherited from class edu.uci.ics.jung.visualization.picking.ShapePickSupport

edgesAreFiltered, getFilteredEdges, getFilteredVertices, getPickSize, getStyle, isEdgeRendered, isVertexRendered, setPickSize, setStyle, verticesAreFiltered

Methods inherited from class java.lang.Object

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

Constructor Detail

LayoutLensShapePickSupport

public LayoutLensShapePickSupport(VisualizationServer<V,E> vv,
                                  float pickSize)

LayoutLensShapePickSupport

public LayoutLensShapePickSupport(VisualizationServer<V,E> vv)

Method Detail

getVertex

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

Description copied from class: ShapePickSupport

Returns the vertex, if any, whose shape contains (x, y). If (x,y) is contained in more than one vertex's shape, returns the vertex whose center is closest to the pick point.

Specified by:

getVertex in interface GraphElementAccessor<V,E>

Overrides:

getVertex in class ShapePickSupport<V,E>

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 whose shape contains (x,y), and whose center is closest to the pick point

getVertices

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

Description copied from class: ShapePickSupport

Returns the vertices whose layout coordinates are contained in Shape. The shape is in screen coordinates, and the graph vertices are transformed to screen coordinates before they are tested for inclusion.

Specified by:

getVertices in interface GraphElementAccessor<V,E>

Overrides:

getVertices in class ShapePickSupport<V,E>

Returns:

the Collection of vertices whose layout coordinates are contained in shape.

getEdge

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

Description copied from class: ShapePickSupport

Returns an edge whose shape intersects the 'pickArea' footprint of the passed x,y, coordinates.

Specified by:

getEdge in interface GraphElementAccessor<V,E>

Overrides:

getEdge in class ShapePickSupport<V,E>

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 whose shape intersects the pick area centered on the location (x,y)