X-Git-Url: https://gitweb.fperrin.net/?a=blobdiff_plain;f=tim%2Fprune%2Fdata%2FDoubleRange.java;h=4e361224f420ed32b72473edc1e5adf87d37a3f0;hb=7f5ed2be62905bd37717376dc22d09e5ea7edb4d;hp=b7d4771b5ce28c8d6a54fdffd077224a77cf16c1;hpb=312fec956e43f5d0a38617da5d0add9c62563e2c;p=GpsPrune.git

diff --git a/tim/prune/data/DoubleRange.java b/tim/prune/data/DoubleRange.java
index b7d4771..4e36122 100644
--- a/tim/prune/data/DoubleRange.java
+++ b/tim/prune/data/DoubleRange.java
@@ -10,6 +10,30 @@ public class DoubleRange
 	private double _min = 0.0, _max = 0.0;
 
 
+	/** Empty constructor, cleared to zeroes */
+	public DoubleRange() {}
+
+	/**
+	 * Constructor giving two initial values
+	 * @param inValue1 first value
+	 * @param inValue2 second value
+	 */
+	public DoubleRange(double inValue1, double inValue2)
+	{
+		addValue(inValue1);
+		addValue(inValue2);
+	}
+
+	/**
+	 * Clear for a new calculation
+	 */
+	public void clear()
+	{
+		_min = _max = 0.0;
+		_empty = true;
+	}
+
+
 	/**
 	 * Add a value to the range
 	 * @param inValue value to add
@@ -47,4 +71,30 @@ public class DoubleRange
 	{
 		return _max;
 	}
+
+	/**
+	 * @return range, as maximum - minimum
+	 */
+	public double getRange()
+	{
+		return _max - _min;
+	}
+
+	/**
+	 * @return mid value, halfway between min and max
+	 */
+	public double getMidValue()
+	{
+		return (_max + _min) / 2.0;
+	}
+
+	/**
+	 * Copy this range into a new object, which can then be modified without changing this one
+	 * @return deep copy of this object
+	 */
+	public DoubleRange copy()
+	{
+		if (_empty) return new DoubleRange();
+		return new DoubleRange(_min, _max);
+	}
 }