More track data.

[utils] / gps / src / main / java / org / wamblee / gps / track / TrackSegmentImpl.java

diff --git a/gps/src/main/java/org/wamblee/gps/track/TrackSegmentImpl.java b/gps/src/main/java/org/wamblee/gps/track/TrackSegmentImpl.java
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+++ b/gps/src/main/java/org/wamblee/gps/track/TrackSegmentImpl.java
@@ -0,0 +1,99 @@
+/*
+ * 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.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.wamblee.gps.geometry.Point;
+
+/**
+ * Represents a GPS track. 
+ *
+ * @author Erik Brakkee
+ */
+public class TrackSegmentImpl implements Serializable, TrackSegment {
+    
+    private String _description; 
+    private List<TrackPoint> _points; 
+    
+    /**
+     * Constructs an empty track. 
+     *
+     */
+    public TrackSegmentImpl(String aDescription) { 
+        _description = aDescription;  
+        _points = new ArrayList<TrackPoint>();
+    }
+    
+    
+    @Override
+    public String getDescription() {
+        return _description;
+    }
+    
+    /**
+     * Adds a point to a track. 
+     * @param aPoint Point. 
+     */
+    public void addPoint(TrackPoint aPoint) { 
+        _points.add(aPoint);
+    }
+    
+    /* (non-Javadoc)
+     * @see org.wamblee.gps.track.TrackSegment#size()
+     */
+    public int size()  { 
+        return _points.size(); 
+    }
+    
+    /* (non-Javadoc)
+     * @see org.wamblee.gps.track.TrackSegment#getMinCoordinate(int)
+     */
+    public double getMinCoordinate(int i) {
+        if ( size() == 0 ) { 
+            throw new IllegalArgumentException("empty track");
+        }
+        double min = getPoint(0).getCoordinates().getX(i);
+        for (int j = 1; j < size(); j++) { 
+            min = Math.min(min, getPoint(j).getCoordinates().getX(i));
+        }
+        return min;
+    }
+    
+    /* (non-Javadoc)
+     * @see org.wamblee.gps.track.TrackSegment#getMaxCoordinate(int)
+     */
+    public double getMaxCoordinate(int i) {
+        if ( size() == 0 ) { 
+            throw new IllegalArgumentException("empty track");
+        }
+        double max = getPoint(0).getCoordinates().getX(i);
+        for (int j = 1; j < size(); j++) { 
+            max = Math.max(max, getPoint(j).getCoordinates().getX(i));
+        }
+        return max;
+    }
+    
+    /* (non-Javadoc)
+     * @see org.wamblee.gps.track.TrackSegment#getPoint(int)
+     */
+    public Point getPoint(int aIndex) { 
+        return _points.get(aIndex);
+    }
+}