some more changes related to PS3 SPU optimizations (16-byte alignment, allowing non-virtual access to data)

src/BulletCollision/CollisionShapes/btConvexHullShape.h

@@ -24,21 +24,30 @@ subject to the following restrictions:
 ///No connectivity is needed. localGetSupportingVertex iterates linearly though all vertices.
 ///on modern hardware, due to cache coherency this isn't that bad. Complex algorithms tend to trash the cash.
 ///(memory is much slower then the cpu)
-class btConvexHullShape : public btPolyhedralConvexShape
+ATTRIBUTE_ALIGNED16(class) btConvexHullShape : public btPolyhedralConvexShape
 {
 	btAlignedObjectArray<btPoint3>	m_points;
 
 public:
+
+	
 	///this constructor optionally takes in a pointer to points. Each point is assumed to be 3 consecutive btScalar (x,y,z), the striding defines the number of bytes between each point, in memory.
 	///It is easier to not pass any points in the constructor, and just add one point at a time, using addPoint.
 	///btConvexHullShape make an internal copy of the points.
 	btConvexHullShape(const btScalar* points=0,int numPoints=0, int stride=sizeof(btPoint3));
 
-	void addPoint(const btPoint3& point)
+	void addPoint(const btPoint3& point);
+
+	btPoint3* getPoints()
 	{
-		m_points.push_back(point);
-		recalcLocalAabb();
+		return &m_points[0];
 	}
+
+	int getNumPoints()
+	{
+		return m_points.size();
+	}
+
 	virtual btVector3	localGetSupportingVertex(const btVector3& vec)const;
 	virtual btVector3	localGetSupportingVertexWithoutMargin(const btVector3& vec)const;
 	virtual void	batchedUnitVectorGetSupportingVertexWithoutMargin(const btVector3* vectors,btVector3* supportVerticesOut,int numVectors) const;