Version 11, August 2010

[GpsPrune.git] / tim / prune / data / SourceInfo.java

diff --git a/tim/prune/data/SourceInfo.java b/tim/prune/data/SourceInfo.java
index bbe8baa3d9cfb269eb9efcbd268b4a48976a2d8f..341bf0299410a3f767adcf9fbe9f3064d9053aef 100644 (file)
--- a/tim/prune/data/SourceInfo.java
+++ b/tim/prune/data/SourceInfo.java
@@ -3,9 +3,8 @@ package tim.prune.data;
 import java.io.File;
 
 /**
- * Class to hold the source of the point data,
- * including original file and file type, and
- * also file offsets for source copying
+ * Class to hold the source of the point data, including the original file
+ * and file type, and references to each of the point objects
  */
 public class SourceInfo
 {
@@ -21,6 +20,10 @@ public class SourceInfo
 
        /** Array of datapoints */
        private DataPoint[] _points = null;
+       /** Number of points */
+       private int _numPoints = 0;
+       /** Array of point indices (if necessary) */
+       private int[] _pointIndices = null;
 
 
        /**
@@ -76,7 +79,22 @@ public class SourceInfo
         */
        public int getNumPoints()
        {
-               return _points.length;
+               return _numPoints;
+       }
+
+       /**
+        * Set the indices of the points selected out of a loaded track
+        * @param inSelectedFlags array of booleans showing whether each point in the original data was loaded or not
+        */
+       public void setPointIndices(boolean[] inSelectedFlags)
+       {
+               _numPoints = inSelectedFlags.length;
+               _pointIndices = new int[_numPoints];
+               int p=0;
+               for (int i=0; i<_numPoints; i++) {
+                       if (inSelectedFlags[i]) {_pointIndices[p++] = i;}
+               }
+               // Now the point indices array holds the index of each of the selected points
        }
 
        /**
@@ -86,6 +104,7 @@ public class SourceInfo
         */
        public void populatePointObjects(Track inTrack, int inNumPoints)
        {
+               if (_numPoints == 0) {_numPoints = inNumPoints;}
                if (inNumPoints > 0)
                {
                        _points = new DataPoint[inNumPoints];
@@ -106,6 +125,7 @@ public class SourceInfo
                for (int i=0; i<_points.length && (idx < 0); i++) {
                        if (_points[i] == inPoint) {idx = i;}
                }
-               return idx;
+               if (_pointIndices == null) {return idx;} // All points loaded
+               return _pointIndices[idx]; // use point index mapping
        }
 }