OsmWay.java

/*
 * Copyright 2013 Tobias Knerr
 *
 * This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
 *
 * This program is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.oscim.core.osm;

import java.util.List;

import org.oscim.core.TagSet;

import com.vividsolutions.jts.geom.CoordinateSequence;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.geom.impl.PackedCoordinateSequenceFactory;

public class OsmWay extends OsmElement {

	public final List<OsmNode> nodes;

	public OsmWay(TagSet tags, long id, List<OsmNode> nodes) {
		super(tags, id);
		this.nodes = nodes;
	}

	public boolean isClosed() {
		return nodes.size() > 0 &&
		        nodes.get(0).equals(nodes.get(nodes.size() - 1));
	}

	@Override
	public String toString() {
		return "w" + id;
	}

	public Geometry toJts() {
		double[] coords = new double[nodes.size() * 2];
		int i = 0;
		for (OsmNode n : nodes) {
			coords[i++] = n.lon;
			coords[i++] = n.lat;
		}

		CoordinateSequence c = PackedCoordinateSequenceFactory.DOUBLE_FACTORY.create(coords, 2);
		return new LineString(c, null);
	}
}