SUMOGeoCoordinatesResolver.java

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package de.psi.telco.sumoplayer;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.SAXException;

import de.psi.telco.sumoplayer.util.PROJTransformer;
import de.psi.telco.sumoplayer.util.Point;
import de.psi.telco.sumoplayer.util.PointImpl;

public class SUMOGeoCoordinatesResolver {
    
    private File networkFile;
    private SUMONetwork network = new SUMONetwork();
    private PROJTransformer proj;
    
    public SUMOGeoCoordinatesResolver(String netfile){
        this.networkFile = new File(netfile);
        this.readNetwork();
        
        this.proj = new PROJTransformer(network.projString, network.offset);
    }
    
    private void readNetwork() {
        SAXParserFactory saxFactory = SAXParserFactory.newInstance();
        SAXParser saxParser = null;
        try {
            saxParser = saxFactory.newSAXParser();
        } catch (ParserConfigurationException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SAXException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        SUMOSAXNeworkfileHandler saxHandler = new SUMOSAXNeworkfileHandler();
        System.out.println("Reading SUMO Networkfile...");
        try {
            saxParser.parse(networkFile, saxHandler);
        } catch (SAXException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        System.out.println("done.");
        
        this.network = saxHandler.network;
    }

    public Point resolv(String edgeId, String laneId, double pos){
        //System.out.println("Resolver call - edge:"+edgeId+" - lane:"+laneId+" - pod:"+pos);
        if (this.network != null){  // network loaded. do look up
            Point out = network.lanes.get(laneId).getPositionWithin(pos);
            
            out = proj.transformInvers(out);
            return out;
        }else{
            return new PointImpl(0,0);
        }
    }
}