X-Git-Url: https://gitweb.fperrin.net/?a=blobdiff_plain;f=tim%2Fprune%2Fgui%2Fprofile%2FAltitudeData.java;fp=tim%2Fprune%2Fgui%2Fprofile%2FAltitudeData.java;h=90130cc19a1f0985e2655da2c55f36ac34cc7305;hb=c0387c124840c9407e040600fda88f3c3e8f6aa6;hp=0000000000000000000000000000000000000000;hpb=1ee49ae3c8ef3aa2e63eadd458531e5f8bd4f92c;p=GpsPrune.git

diff --git a/tim/prune/gui/profile/AltitudeData.java b/tim/prune/gui/profile/AltitudeData.java
new file mode 100644
index 0000000..90130cc
--- /dev/null
+++ b/tim/prune/gui/profile/AltitudeData.java
@@ -0,0 +1,74 @@
+package tim.prune.gui.profile;
+
+import tim.prune.I18nManager;
+import tim.prune.data.Altitude;
+import tim.prune.data.DataPoint;
+import tim.prune.data.Track;
+
+/**
+ * Class to provide a source of altitude data for the profile chart
+ */
+public class AltitudeData extends ProfileData
+{
+	/** Altitude format for values */
+	private Altitude.Format _altitudeFormat = Altitude.Format.NO_FORMAT;
+
+
+	/**
+	 * Constructor
+	 * @param inTrack track object
+	 */
+	public AltitudeData(Track inTrack) {
+		super(inTrack);
+	}
+
+	/**
+	 * Get the data and populate the instance arrays
+	 */
+	public void init()
+	{
+		initArrays();
+		_hasData = false;
+		_altitudeFormat = Altitude.Format.NO_FORMAT;
+		if (_track != null) {
+			for (int i=0; i<_track.getNumPoints(); i++)
+			{
+				DataPoint point = _track.getPoint(i);
+				if (point != null && point.hasAltitude())
+				{
+					// Point has an altitude - if it's the first one, use its format
+					if (_altitudeFormat == Altitude.Format.NO_FORMAT)
+					{
+						_altitudeFormat = point.getAltitude().getFormat();
+						_minValue = _maxValue = point.getAltitude().getValue();
+					}
+					// Store the value and maintain max and min values
+					double value = point.getAltitude().getValue(_altitudeFormat);
+					_pointValues[i] = value;
+					if (value < _minValue) {_minValue = value;}
+					if (value > _maxValue) {_maxValue = value;}
+
+					_hasData = true;
+					_pointHasData[i] = true;
+				}
+			}
+		}
+	}
+
+	/**
+	 * @return text description including units
+	 */
+	public String getLabel()
+	{
+		return I18nManager.getText("fieldname.altitude") + " ("
+			+ I18nManager.getText(_altitudeFormat==Altitude.Format.FEET?"units.feet.short":"units.metres.short")
+			+ ")";
+	}
+
+	/**
+	 * @return key for message when no altitudes present
+	 */
+	public String getNoDataKey() {
+		return "display.noaltitudes";
+	}
+}