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diff --git a/extern/bullet2/BulletCollision/CollisionShapes/btPolyhedralConvexShape.h b/extern/bullet2/BulletCollision/CollisionShapes/btPolyhedralConvexShape.h
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+++ b/extern/bullet2/BulletCollision/CollisionShapes/btPolyhedralConvexShape.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 BU_SHAPE
+#define BU_SHAPE
+
+#include "LinearMath/btMatrix3x3.h"
+#include "btConvexInternalShape.h"
+
+
+///The btPolyhedralConvexShape is an internal interface class for polyhedral convex shapes.
+class btPolyhedralConvexShape : public btConvexInternalShape
+{
+
+protected:
+	
+public:
+
+	btPolyhedralConvexShape();
+
+	//brute force implementations
+
+	virtual btVector3	localGetSupportingVertexWithoutMargin(const btVector3& vec)const;
+	virtual void	batchedUnitVectorGetSupportingVertexWithoutMargin(const btVector3* vectors,btVector3* supportVerticesOut,int numVectors) const;
+	
+	virtual void	calculateLocalInertia(btScalar mass,btVector3& inertia) const;
+	
+	
+	virtual int	getNumVertices() const = 0 ;
+	virtual int getNumEdges() const = 0;
+	virtual void getEdge(int i,btVector3& pa,btVector3& pb) const = 0;
+	virtual void getVertex(int i,btVector3& vtx) const = 0;
+	virtual int	getNumPlanes() const = 0;
+	virtual void getPlane(btVector3& planeNormal,btVector3& planeSupport,int i ) const = 0;
+//	virtual int getIndex(int i) const = 0 ; 
+
+	virtual	bool isInside(const btVector3& pt,btScalar tolerance) const = 0;
+	
+};
+
+
+///The btPolyhedralConvexAabbCachingShape adds aabb caching to the btPolyhedralConvexShape
+class btPolyhedralConvexAabbCachingShape : public btPolyhedralConvexShape
+{
+
+	btVector3	m_localAabbMin;
+	btVector3	m_localAabbMax;
+	bool		m_isLocalAabbValid;
+		
+protected:
+
+	void setCachedLocalAabb (const btVector3& aabbMin, const btVector3& aabbMax)
+	{
+		m_isLocalAabbValid = true;
+		m_localAabbMin = aabbMin;
+		m_localAabbMax = aabbMax;
+	}
+
+	inline void getCachedLocalAabb (btVector3& aabbMin, btVector3& aabbMax) const
+	{
+		btAssert(m_isLocalAabbValid);
+		aabbMin = m_localAabbMin;
+		aabbMax = m_localAabbMax;
+	}
+
+public:
+
+	btPolyhedralConvexAabbCachingShape();
+	
+	inline void getNonvirtualAabb(const btTransform& trans,btVector3& aabbMin,btVector3& aabbMax, btScalar margin) const
+	{
+
+		//lazy evaluation of local aabb
+		btAssert(m_isLocalAabbValid);
+		btTransformAabb(m_localAabbMin,m_localAabbMax,margin,trans,aabbMin,aabbMax);
+	}
+
+	virtual void	setLocalScaling(const btVector3& scaling);
+
+	virtual void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const;
+
+	void	recalcLocalAabb();
+
+};
+
+#endif //BU_SHAPE