src/tim/prune/function/sew/SplitSegmentsFunction.java

   1 package tim.prune.function.sew;
   2
   3 import javax.swing.JOptionPane;
   4
   5 import tim.prune.App;
   6 import tim.prune.I18nManager;
   7 import tim.prune.UpdateMessageBroker;
   8 import tim.prune.data.DataPoint;
   9 import tim.prune.function.DistanceTimeLimitFunction;
  10 import tim.prune.undo.UndoSplitSegments;
  11
  12 /**
  13  * Function to split a track into segments using
  14  * either a distance limit or a time limit
  15  */
  16 public class SplitSegmentsFunction extends DistanceTimeLimitFunction
  17 {
  18         /**
  19          * Constructor
  20          */
  21         public SplitSegmentsFunction(App inApp) {
  22                 super(inApp, false);
  23         }
  24
  25         /**
  26          * @return name key
  27          */
  28         public String getNameKey() {
  29                 return "function.splitsegments";
  30         }
  31
  32
  33         /**
  34          * The dialog has been completed and OK pressed, so do the split
  35          */
  36         protected void performFunction()
  37         {
  38                 // Split either by distance or time
  39                 final int timeLimitSeconds = getTimeLimitInSeconds();
  40                 final boolean splitByTime = (timeLimitSeconds > 0);
  41                 final double distLimitRadians = getDistanceLimitRadians();
  42                 final boolean splitByDistance = (distLimitRadians > 0.0);
  43                 if (!splitByTime && !splitByDistance) {
  44                         return; // neither option selected
  45                 }
  46
  47                 // Make undo object
  48                 UndoSplitSegments undo = new UndoSplitSegments(_app.getTrackInfo().getTrack());
  49                 final int numPoints = _app.getTrackInfo().getTrack().getNumPoints();
  50                 DataPoint currPoint = null, prevPoint = null;
  51                 int numSplitsMade = 0;
  52
  53                 // Now actually do it, looping through the points in the track
  54                 for (int i=0; i<numPoints; i++)
  55                 {
  56                         currPoint = _app.getTrackInfo().getTrack().getPoint(i);
  57                         if (!currPoint.isWaypoint())
  58                         {
  59                                 boolean splitHere = (prevPoint != null)
  60                                         && ((splitByDistance && DataPoint.calculateRadiansBetween(prevPoint, currPoint) > distLimitRadians)
  61                                                 || (splitByTime && currPoint.hasTimestamp() && prevPoint.hasTimestamp()
  62                                                         && currPoint.getTimestamp().getSecondsSince(prevPoint.getTimestamp()) > timeLimitSeconds));
  63                                 if (splitHere && !currPoint.getSegmentStart())
  64                                 {
  65                                         currPoint.setSegmentStart(true);
  66                                         numSplitsMade++;
  67                                 }
  68                                 prevPoint = currPoint;
  69                         }
  70                 }
  71
  72                 if (numSplitsMade > 0)
  73                 {
  74                         _app.completeFunction(undo, I18nManager.getTextWithNumber("confirm.splitsegments", numSplitsMade));
  75                         UpdateMessageBroker.informSubscribers();
  76                         _dialog.dispose();
  77                 }
  78                 else
  79                 {
  80                         // Complain that no split was made
  81                         JOptionPane.showMessageDialog(_parentFrame, I18nManager.getText("error.tracksplit.nosplit"),
  82                                 I18nManager.getText("error.function.noop.title"), JOptionPane.WARNING_MESSAGE);
  83                 }
  84         }
  85 }