tim/prune/gui/profile/GradientData.java

   1 package tim.prune.gui.profile;
   2
   3 import tim.prune.I18nManager;
   4 import tim.prune.data.GradientCalculator;
   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 gradient data for the profile chart
  11  * or for the point colourer
  12  */
  13 public class GradientData extends ProfileData
  14 {
  15         /**
  16          * Constructor
  17          * @param inTrack track object
  18          */
  19         public GradientData(Track inTrack) {
  20                 super(inTrack);
  21         }
  22
  23         /**
  24          * Get the data and populate the instance arrays
  25          */
  26         public void init(UnitSet inUnitSet)
  27         {
  28                 setUnitSet(inUnitSet);
  29                 initArrays();
  30                 _hasData = false;
  31                 _minValue = _maxValue = 0.0;
  32                 SpeedValue speed = new SpeedValue();
  33                 if (_track != null)
  34                 {
  35                         for (int i=0; i<_track.getNumPoints(); i++)
  36                         {
  37                                 // Get the gradient either from the speed values or from the distances and altitudes
  38                                 GradientCalculator.calculateGradient(_track, i, speed);
  39                                 if (speed.isValid())
  40                                 {
  41                                         double speedValue = speed.getValue();
  42                                         _pointValues[i] = speedValue;
  43                                         if (speedValue < _minValue || !_hasData) {_minValue = speedValue;}
  44                                         if (speedValue > _maxValue || !_hasData) {_maxValue = speedValue;}
  45                                         _hasData = true;
  46                                 }
  47                                 _pointHasData[i] = speed.isValid();
  48                         }
  49                 }
  50         }
  51
  52         /**
  53          * @return text description
  54          */
  55         public String getLabel()
  56         {
  57                 return I18nManager.getText("fieldname.gradient");
  58         }
  59
  60         /**
  61          * @return key for message when no altitudes present
  62          */
  63         public String getNoDataKey() {
  64                 return "display.noaltitudes";
  65         }
  66 }