2 * Copyright 2006 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package org.wamblee.gps.track;
19 import java.io.Serializable;
20 import java.util.ArrayList;
21 import java.util.List;
23 import org.wamblee.gps.geometry.Point;
26 * Represents a GPS track.
28 * @author Erik Brakkee
30 public class TrackSegmentImpl implements Serializable, TrackSegment {
32 private String _description;
33 private List<TrackPoint> _points;
36 * Constructs an empty track.
39 public TrackSegmentImpl(String aDescription) {
40 _description = aDescription;
41 _points = new ArrayList<TrackPoint>();
46 public String getDescription() {
51 * Adds a point to a track.
52 * @param aPoint Point.
54 public void addPoint(TrackPoint aPoint) {
59 * @see org.wamblee.gps.track.TrackSegment#size()
62 return _points.size();
66 * @see org.wamblee.gps.track.TrackSegment#getMinCoordinate(int)
68 public double getMinCoordinate(int i) {
70 throw new IllegalArgumentException("empty track");
72 double min = getPoint(0).getCoordinates().getX(i);
73 for (int j = 1; j < size(); j++) {
74 min = Math.min(min, getPoint(j).getCoordinates().getX(i));
80 * @see org.wamblee.gps.track.TrackSegment#getMaxCoordinate(int)
82 public double getMaxCoordinate(int i) {
84 throw new IllegalArgumentException("empty track");
86 double max = getPoint(0).getCoordinates().getX(i);
87 for (int j = 1; j < size(); j++) {
88 max = Math.max(max, getPoint(j).getCoordinates().getX(i));
94 * @see org.wamblee.gps.track.TrackSegment#getPoint(int)
96 public Point getPoint(int aIndex) {
97 return _points.get(aIndex);