/*
    * Copyright (c) 2005, The JUNG Authors
    * All rights reserved.
    * 
    * This software is open-source under the BSD license; see either "license.txt"
    * or https://github.com/jrtom/jung/blob/master/LICENSE for a description.
    * 
    * Created on March 10, 2005
    */
  package edu.uci.ics.jung.visualization.decorators;
  
  import java.awt.Shape;
  
  import com.google.common.base.Function;
  
  import edu.uci.ics.jung.graph.util.EdgeIndexFunction;
  
  
  /**
   * An abstract class for edge-to-Shape functions that work with parallel edges.
   *  
   * @author Tom Nelson
   */
  public abstract class ParallelEdgeShapeTransformer<V,E> implements Function<E, Shape> {
      /** Specifies the distance between control points for edges being drawn in parallel. */
      protected float control_offset_increment = 20.f;
      protected EdgeIndexFunction<V,E> edgeIndexFunction;
      
      public void setControlOffsetIncrement(float y) {
          control_offset_increment = y;
      }
      
      public void setEdgeIndexFunction(EdgeIndexFunction<V,E> edgeIndexFunction) {
      	this.edgeIndexFunction = edgeIndexFunction;
      }
      
      public EdgeIndexFunction<V,E> getEdgeIndexFunction() {
      	return edgeIndexFunction;
      }
  }