// **********************************************************************
//
// <copyright>
//
// BBN Technologies
// 10 Moulton Street
// Cambridge, MA 02138
// (617) 873-8000
//
// Copyright (C) BBNT Solutions LLC. All rights reserved.
//
// </copyright>
// **********************************************************************
//
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/tools/roads/LayerView.java,v $
// $RCSfile: LayerView.java,v $
// $Revision: 1.2 $
// $Date: 2004/10/14 18:06:28 $
// $Author: dietrick $
//
// **********************************************************************
package com.bbn.openmap.tools.roads;
import java.util.List;
import com.bbn.openmap.proj.Projection;
/**
* Services the layer provides to the road layer helper.
*/
public interface LayerView {
/**
* Needed to find the height and width of the displayed routes,
* etc.
*/
Projection getProjection();
/**
* Should return a flattened list of road OMGraphics. No embedded
* OMGraphicLists.
*/
List getGraphicList();
/**
* Draw extra OMGraphics (intersections, to debug the road layer),
* a callback method to the LayerView to let it know what the
* RoadFinder is doing.
*/
void setExtraGraphics(List toDraw);
}