junctioncontext.java

Eclipse+repastS

/*
〤opyright 2008 Nick Malleson

This file is part of RepastCity.

RepastCity is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

RepastCity is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with RepastCity.  If not, see <http://www.gnu.org/licenses/>.
 */
package repastcity.citycontext;

import java.lang.Iterable;

import repast.simphony.context.DefaultContext;
import repast.simphony.context.space.gis.GeographyFactoryFinder;
import repast.simphony.context.space.graph.NetworkFactory;
import repast.simphony.context.space.graph.NetworkFactoryFinder;
import repast.simphony.space.gis.GeographyParameters;

import java.util.HashMap;

import com.vividsolutions.jts.geom.Coordinate;

/**
 * Context which holds juntction objects and also the RoadNetwork.
 * 
 * @author Nick Malleson
 *
 */
public class JunctionContext extends DefaultContext<Junction> {
	
	public JunctionContext() {
		
		super("JunctionContext");
		
		System.out.println("JunctionContext building junction context and projections");
				
		/* Create a Network projection for the road network */
		NetworkFactory netFac = NetworkFactoryFinder.createNetworkFactory(new HashMap<String, Object>());
		netFac.createNetwork("RoadNetwork", this, false);
		
		/* Create a Geography to store junctions in spatially */
		GeographyParameters<Junction> geoParams = new GeographyParameters<Junction>();
		GeographyFactoryFinder.createGeographyFactory(null).createGeography(
				"JunctionGeography", this, geoParams);

	}
	
	/* Runs through all the junctions in the context. If it finds one with coordinates which are the same as the
	 * Junction passed to this functions it returns true. */
	public boolean existsInContext(Junction j) {
		Iterable<Junction> it = this.getObjects(Junction.class);
		for (Junction junc:it) {
			if (junc.equals(j) )
				return true;
		}
		return false;
	}
	
	public Junction getJunctionWithCoordinates(Coordinate c) {
		Iterable<Junction> it = this.getObjects(Junction.class);
		for (Junction junc:it) {
			if (junc.getCoordinate().equals(c))
				return junc;
		}
		System.err.print("JunctionContext: getJunctionWithCoordinates: error, junction not found. ");
		System.err.println("Coordinates: "+c.toString());
		return null;
	}
	
}