From 5791919f01f6a1cabbccf01689584990a43b48cd Mon Sep 17 00:00:00 2001
From: David Williams <david@david-williams.info>
Date: Sun, 30 Mar 2008 22:05:18 +0000
Subject: [PATCH] Simplyfing and improving updatePolyVoxGeometry()

---
 include/Vector.h   |  2 ++
 include/Vector.inl | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/include/Vector.h b/include/Vector.h
index 4f58f1f5..109c3251 100644
--- a/include/Vector.h
+++ b/include/Vector.h
@@ -40,6 +40,8 @@ namespace PolyVox
         Vector<Size,Type>& operator=(const Vector<Size,Type>& rhs) throw();
         ///Equality Operator.
         bool operator==(const Vector<Size,Type>& rhs) const throw();
+		///Comparison Operator.
+        bool operator<(const Vector<Size,Type>& rhs) const throw();
         ///Addition and Assignment Operator.
         Vector<Size,Type>& operator+=(const Vector<Size,Type> &rhs) throw();
         ///Subtraction and Assignment Operator.
diff --git a/include/Vector.inl b/include/Vector.inl
index 3b614474..3677b681 100644
--- a/include/Vector.inl
+++ b/include/Vector.inl
@@ -155,6 +155,26 @@ namespace PolyVox
 		return equal;
     }
 
+	/**
+    Checks whether this vector is less than the parameter. The metric is
+	meaningless but it allows Vectors to me used as key in sdt::map, etc.
+    \param rhs The Vector to compare to.
+    \return true if this is less than the parameter
+    \see operator!=
+    */
+    template <boost::uint32_t Size, typename Type>
+        inline bool Vector<Size, Type>::operator<(const Vector<Size, Type> &rhs) const throw()
+    {
+		for(int ct = 0; ct < Size; ++ct)
+		{
+			if (m_tElements[ct] < rhs.m_tElements[ct])
+				return true;
+			if (rhs.m_tElements[ct] < m_tElements[ct])
+				return false;
+		}
+		return false;
+    }
+
     /**
     Subtraction operator subtracts corresponding elements of one Vector from the other.
     \param rhs Vector to subtract