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diff --git a/extern/bullet2/BulletCollision/CollisionShapes/btConvexShape.h b/extern/bullet2/BulletCollision/CollisionShapes/btConvexShape.h
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+++ b/extern/bullet2/BulletCollision/CollisionShapes/btConvexShape.h
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+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2009 Erwin Coumans  http://bulletphysics.org
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose, 
+including commercial applications, and to alter it and redistribute it freely, 
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef CONVEX_SHAPE_INTERFACE1
+#define CONVEX_SHAPE_INTERFACE1
+
+#include "btCollisionShape.h"
+
+#include "LinearMath/btVector3.h"
+#include "LinearMath/btTransform.h"
+#include "LinearMath/btMatrix3x3.h"
+#include "btCollisionMargin.h"
+#include "LinearMath/btAlignedAllocator.h"
+
+#define MAX_PREFERRED_PENETRATION_DIRECTIONS 10
+
+/// The btConvexShape is an abstract shape interface, implemented by all convex shapes such as btBoxShape, btConvexHullShape etc.
+/// It describes general convex shapes using the localGetSupportingVertex interface, used by collision detectors such as btGjkPairDetector.
+ATTRIBUTE_ALIGNED16(class) btConvexShape : public btCollisionShape
+{
+
+
+public:
+
+	BT_DECLARE_ALIGNED_ALLOCATOR();
+
+	btConvexShape ();
+
+	virtual ~btConvexShape();
+
+	virtual btVector3	localGetSupportingVertex(const btVector3& vec)const = 0;
+
+	////////
+	#ifndef __SPU__
+	virtual btVector3	localGetSupportingVertexWithoutMargin(const btVector3& vec) const=0;
+	#endif //#ifndef __SPU__
+
+	btVector3 localGetSupportVertexWithoutMarginNonVirtual (const btVector3& vec) const;
+	btVector3 localGetSupportVertexNonVirtual (const btVector3& vec) const;
+	btScalar getMarginNonVirtual () const;
+	void getAabbNonVirtual (const btTransform& t, btVector3& aabbMin, btVector3& aabbMax) const;
+
+	
+	//notice that the vectors should be unit length
+	virtual void	batchedUnitVectorGetSupportingVertexWithoutMargin(const btVector3* vectors,btVector3* supportVerticesOut,int numVectors) const= 0;
+
+	///getAabb's default implementation is brute force, expected derived classes to implement a fast dedicated version
+	void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const =0;
+
+	virtual void getAabbSlow(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const =0;
+
+	virtual void	setLocalScaling(const btVector3& scaling) =0;
+	virtual const btVector3& getLocalScaling() const =0;
+
+	virtual void	setMargin(btScalar margin)=0;
+
+	virtual btScalar	getMargin() const=0;
+
+	virtual int		getNumPreferredPenetrationDirections() const=0;
+	
+	virtual void	getPreferredPenetrationDirection(int index, btVector3& penetrationVector) const=0;
+
+
+	
+	
+};
+
+
+
+#endif //CONVEX_SHAPE_INTERFACE1