Version 10, May 2010

[GpsPrune.git] / tim / prune / gui / profile / AltitudeData.java

diff --git a/tim/prune/gui/profile/AltitudeData.java b/tim/prune/gui/profile/AltitudeData.java
new file mode 100644 (file)
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";
+       }
+}