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VertexStrokeHighlight.java
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VertexStrokeHighlight.java
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package yt.vis;
import java.awt.BasicStroke;
import java.awt.Stroke;
import org.apache.commons.collections15.Transformer;
import edu.uci.ics.jung.graph.Graph;
import edu.uci.ics.jung.visualization.picking.PickedInfo;
public final class VertexStrokeHighlight<V,E> implements
Transformer<V,Stroke>
{
protected boolean highlight = false;
protected Stroke heavy = new BasicStroke(5);
protected Stroke medium = new BasicStroke(3);
protected Stroke light = new BasicStroke(1);
protected PickedInfo<V> pi;
protected Graph<V,E> graph;
public VertexStrokeHighlight(Graph<V,E> graph, PickedInfo<V> pi)
{
this.graph = graph;
this.pi = pi;
}
public void setHighlight(boolean highlight)
{
this.highlight = highlight;
}
public Stroke transform(V v)
{
if (highlight)
{
if (pi.isPicked(v))
return heavy;
else
{
for(V w : graph.getNeighbors(v)) {
if (pi.isPicked(w))
return medium;
}
return light;
}
}
else
return light;
}
}