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diff --git a/indra/llmath/llbbox.h b/indra/llmath/llbbox.h
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+/** 
+ * @file llbbox.h
+ * @brief General purpose bounding box class
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_BBOX_H
+#define LL_BBOX_H
+
+#include "v3math.h"
+#include "llquaternion.h"
+
+// Note: "local space" for an LLBBox is defined relative to agent space in terms of
+// a translation followed by a rotation.  There is no scale term since the LLBBox's min and 
+// max are not necessarily symetrical and define their own extents.
+
+class LLBBox
+{
+public:
+	LLBBox() {mEmpty = TRUE;}
+	LLBBox( const LLVector3& pos_agent,
+		const LLQuaternion& rot,
+		const LLVector3& min_local,
+		const LLVector3& max_local )
+		:
+		mMinLocal( min_local ), mMaxLocal( max_local ), mPosAgent(pos_agent), mRotation( rot), mEmpty( TRUE )
+		{}
+
+	// Default copy constructor is OK.
+
+	const LLVector3&	getPositionAgent() const			{ return mPosAgent; }
+	const LLQuaternion&	getRotation() const					{ return mRotation; }
+
+	const LLVector3&	getMinLocal() const					{ return mMinLocal; }
+	void				setMinLocal( const LLVector3& min )	{ mMinLocal = min; }
+
+	const LLVector3&	getMaxLocal() const					{ return mMaxLocal; }
+	void				setMaxLocal( const LLVector3& max )	{ mMaxLocal = max; }
+
+	LLVector3			getCenterLocal() const				{ return (mMaxLocal - mMinLocal) * 0.5f + mMinLocal; }
+	LLVector3			getCenterAgent() const				{ return localToAgent( getCenterLocal() ); }
+
+	LLVector3			getExtentLocal() const				{ return mMaxLocal - mMinLocal; }
+
+	BOOL				containsPointLocal(const LLVector3& p) const;
+	BOOL				containsPointAgent(const LLVector3& p) const;
+
+	void				addPointAgent(LLVector3 p);
+	void				addBBoxAgent(const LLBBox& b);
+	
+	void				addPointLocal(const LLVector3& p);
+	void				addBBoxLocal(const LLBBox& b) {	addPointLocal( b.mMinLocal ); addPointLocal( b.mMaxLocal ); }
+
+	void				expand( F32 delta );
+
+	LLVector3			localToAgent( const LLVector3& v ) const;
+	LLVector3			agentToLocal( const LLVector3& v ) const;
+
+	// Changes rotation but not position
+	LLVector3			localToAgentBasis(const LLVector3& v) const;
+	LLVector3			agentToLocalBasis(const LLVector3& v) const;
+
+
+//	friend LLBBox operator*(const LLBBox& a, const LLMatrix4& b);
+
+private:
+	LLVector3			mMinLocal;
+	LLVector3			mMaxLocal;
+	LLVector3			mPosAgent;  // Position relative to Agent's Region
+	LLQuaternion		mRotation;
+	BOOL				mEmpty;		// Nothing has been added to this bbox yet
+};
+
+//LLBBox operator*(const LLBBox &a, const LLMatrix4 &b);
+
+
+#endif  // LL_BBOX_H