X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fgui%2Fprofile%2FAltitudeData.java;fp=src%2Ftim%2Fprune%2Fgui%2Fprofile%2FAltitudeData.java;h=9600b1674ade17a296a9e43f9a1dc4039dfcffe1;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/gui/profile/AltitudeData.java b/src/tim/prune/gui/profile/AltitudeData.java
new file mode 100644
index 0000000..9600b16
--- /dev/null
+++ b/src/tim/prune/gui/profile/AltitudeData.java
@@ -0,0 +1,75 @@
+package tim.prune.gui.profile;
+
+import tim.prune.I18nManager;
+import tim.prune.data.DataPoint;
+import tim.prune.data.Track;
+import tim.prune.data.UnitSet;
+
+/**
+ * Class to provide a source of altitude data for the profile chart
+ */
+public class AltitudeData extends ProfileData
+{
+	/**
+	 * Constructor
+	 * @param inTrack track object
+	 */
+	public AltitudeData(Track inTrack) {
+		super(inTrack);
+	}
+
+	/**
+	 * Get the data and populate the instance arrays
+	 */
+	public void init(UnitSet inUnitSet)
+	{
+		setUnitSet(inUnitSet);
+		initArrays();
+		_hasData = false;
+		// multiplication factor for unit conversion
+		final double multFactor = _unitSet.getAltitudeUnit().getMultFactorFromStd();
+		if (_track != null)
+		{
+			try
+			{
+				for (int i=0; i<_track.getNumPoints(); i++)
+				{
+					DataPoint point = _track.getPoint(i);
+					if (point != null && point.hasAltitude())
+					{
+						// Point has an altitude - store value and maintain max and min values
+						double value = point.getAltitude().getMetricValue() * multFactor;
+						_pointValues[i] = value;
+						if (value < _minValue || !_hasData) {_minValue = value;}
+						if (value > _maxValue || !_hasData) {_maxValue = value;}
+
+						// if all values are zero then that's no data
+						_hasData = _hasData || (point.getAltitude().getValue() != 0);
+						_pointHasData[i] = true;
+					}
+					else _pointHasData[i] = false;
+				}
+			}
+			catch (ArrayIndexOutOfBoundsException obe)
+			{} // must be due to the track size changing during calculation
+			   // assume that a redraw will be triggered
+		}
+	}
+
+	/**
+	 * @return text description including units
+	 */
+	public String getLabel()
+	{
+		return I18nManager.getText("fieldname.altitude") + " ("
+			+ I18nManager.getText(_unitSet.getAltitudeUnit().getShortnameKey())
+			+ ")";
+	}
+
+	/**
+	 * @return key for message when no altitudes present
+	 */
+	public String getNoDataKey() {
+		return "display.noaltitudes";
+	}
+}