X-Git-Url: https://gitweb.fperrin.net/?a=blobdiff_plain;f=tim%2Fprune%2Fdata%2FIntegerRange.java;h=d2424d1bcf557c272de9d1b850b2b301573c6b22;hb=92dad5df664287acb51728e9ea599f150765d34a;hp=61ae34c4ad58f7e9d61a4f320bc76181f43da3e7;hpb=312fec956e43f5d0a38617da5d0add9c62563e2c;p=GpsPrune.git

diff --git a/tim/prune/data/IntegerRange.java b/tim/prune/data/IntegerRange.java
index 61ae34c..d2424d1 100644
--- a/tim/prune/data/IntegerRange.java
+++ b/tim/prune/data/IntegerRange.java
@@ -2,35 +2,46 @@ package tim.prune.data;
 
 /**
  * Represents a range of integers, holding the maximum and
- * minimum values.  Values assumed to be >= 0.
+ * minimum values.
  */
 public class IntegerRange
 {
 	private int _min = -1, _max = -1;
+	private boolean _foundValues = false;
 
 
 	/**
-	 * Add a value to the range
-	 * @param inValue value to add, only positive values considered
+	 * Clear for a new range calculation
 	 */
-	public void addValue(int inValue)
+	public void clear()
 	{
-		if (inValue >= 0)
-		{
-			if (inValue < _min || _min < 0) _min = inValue;
-			if (inValue > _max) _max = inValue;
-		}
+		_min = -1;
+		_max = -1;
+		_foundValues = false;
 	}
 
 
 	/**
-	 * @return true if positive data values were found
+	 * Add a value to the range
+	 * @param inValue value to add
 	 */
-	public boolean hasData()
+	public void addValue(int inValue)
 	{
-		return (_max >= 0);
+		if (inValue < _min || !_foundValues) {
+			_min = inValue;
+		}
+		if (inValue > _max || !_foundValues) {
+			_max = inValue;
+		}
+		_foundValues = true;
 	}
 
+	/**
+	 * @return true if any values added to the range
+	 */
+	public boolean hasValues() {
+		return _foundValues;
+	}
 
 	/**
 	 * @return minimum value, or -1 if none found