/*
 * Copyright 2006 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 

package org.wamblee.gps.track;

import java.util.ArrayList;
import java.util.List;

import org.wamblee.gps.coordinates.Point;

/**
 * Represents a GPS track. 
 */
public class Track {
    
    private List<TrackPoint> _points; 
    
    /**
     * Constructs an empty track. 
     *
     */
    public Track() { 
        _points = new ArrayList<TrackPoint>();
    }
    
    /**
     * Adds a point to a track. 
     * @param aPoint Point. 
     */
    public void addPoint(TrackPoint aPoint) { 
        _points.add(aPoint);
    }
    
    /**
     * @return Number of points in the track. 
     */
    public int size()  { 
        return _points.size(); 
    }
    
    /**
     * Gets the point at the given inded. 
     * @param aIndex 0 &lt;= aIndex &lt; size()
     * @return Point.
     */
    public Point getPoint(int aIndex) { 
        return _points.get(aIndex);
    }
}