tim/prune/gui/profile/VerticalSpeedData.java

   1 package tim.prune.gui.profile;
   2
   3 import tim.prune.I18nManager;
   4 import tim.prune.data.SpeedCalculator;
   5 import tim.prune.data.SpeedValue;
   6 import tim.prune.data.Track;
   7 import tim.prune.data.UnitSet;
   8
   9 /**
  10  * Class to provide a source of vertical speed data for the profile chart
  11  */
  12 public class VerticalSpeedData extends ProfileData
  13 {
  14         /**
  15          * Constructor
  16          * @param inTrack track object
  17          */
  18         public VerticalSpeedData(Track inTrack) {
  19                 super(inTrack);
  20         }
  21
  22         /**
  23          * Get the data and populate the instance arrays
  24          */
  25         public void init(UnitSet inUnitSet)
  26         {
  27                 setUnitSet(inUnitSet);
  28                 initArrays();
  29                 _hasData = false;
  30                 _minValue = _maxValue = 0.0;
  31                 SpeedValue speed = new SpeedValue();
  32                 if (_track != null)
  33                 {
  34                         for (int i=0; i<_track.getNumPoints(); i++)
  35                         {
  36                                 SpeedCalculator.calculateVerticalSpeed(_track, i, speed);
  37                                 // Check whether we got a value from either method
  38                                 if (speed.isValid())
  39                                 {
  40                                         // Store the value and maintain max and min values
  41                                         double speedValue = speed.getValue();
  42                                         _pointValues[i] = speedValue;
  43                                         if (speedValue < _minValue || _minValue == 0.0) {_minValue = speedValue;}
  44                                         if (speedValue > _maxValue) {_maxValue = speedValue;}
  45                                         _hasData = true;
  46                                 }
  47                                 _pointHasData[i] = speed.isValid();
  48                         }
  49                 }
  50         }
  51
  52         /**
  53          * @return text description including units
  54          */
  55         public String getLabel()
  56         {
  57                 return I18nManager.getText("fieldname.verticalspeed") + " ("
  58                         + I18nManager.getText(_unitSet.getVerticalSpeedUnit().getShortnameKey()) + ")";
  59         }
  60
  61         /**
  62          * @return key for message when no speeds present
  63          */
  64         public String getNoDataKey()
  65         {
  66                 if (!_track.hasAltitudeData()) {
  67                         return "display.noaltitudes";
  68                 }
  69                 return "display.notimestamps";
  70         }
  71 }