Update Files

lib/haxebullet/bullet/BulletCollision/CollisionShapes/btCompoundShape.h

@@ -0,0 +1,212 @@
+/*
+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 BT_COMPOUND_SHAPE_H
+#define BT_COMPOUND_SHAPE_H
+
+#include "btCollisionShape.h"
+
+#include "LinearMath/btVector3.h"
+#include "LinearMath/btTransform.h"
+#include "LinearMath/btMatrix3x3.h"
+#include "btCollisionMargin.h"
+#include "LinearMath/btAlignedObjectArray.h"
+
+//class btOptimizedBvh;
+struct btDbvt;
+
+ATTRIBUTE_ALIGNED16(struct) btCompoundShapeChild
+{
+	BT_DECLARE_ALIGNED_ALLOCATOR();
+
+	btTransform			m_transform;
+	btCollisionShape*	m_childShape;
+	int					m_childShapeType;
+	btScalar			m_childMargin;
+	struct btDbvtNode*	m_node;
+};
+
+SIMD_FORCE_INLINE bool operator==(const btCompoundShapeChild& c1, const btCompoundShapeChild& c2)
+{
+	return  ( c1.m_transform      == c2.m_transform &&
+		c1.m_childShape     == c2.m_childShape &&
+		c1.m_childShapeType == c2.m_childShapeType &&
+		c1.m_childMargin    == c2.m_childMargin );
+}
+
+/// The btCompoundShape allows to store multiple other btCollisionShapes
+/// This allows for moving concave collision objects. This is more general then the static concave btBvhTriangleMeshShape.
+/// It has an (optional) dynamic aabb tree to accelerate early rejection tests. 
+/// @todo: This aabb tree can also be use to speed up ray tests on btCompoundShape, see http://code.google.com/p/bullet/issues/detail?id=25
+/// Currently, removal of child shapes is only supported when disabling the aabb tree (pass 'false' in the constructor of btCompoundShape)
+ATTRIBUTE_ALIGNED16(class) btCompoundShape	: public btCollisionShape
+{
+protected:
+	btAlignedObjectArray<btCompoundShapeChild> m_children;
+	btVector3						m_localAabbMin;
+	btVector3						m_localAabbMax;
+
+	btDbvt*							m_dynamicAabbTree;
+
+	///increment m_updateRevision when adding/removing/replacing child shapes, so that some caches can be updated
+	int								m_updateRevision;
+
+	btScalar	m_collisionMargin;
+
+	btVector3	m_localScaling;
+
+public:
+	BT_DECLARE_ALIGNED_ALLOCATOR();
+
+	explicit btCompoundShape(bool enableDynamicAabbTree = true, const int initialChildCapacity = 0);
+
+	virtual ~btCompoundShape();
+
+	void	addChildShape(const btTransform& localTransform,btCollisionShape* shape);
+
+	/// Remove all children shapes that contain the specified shape
+	virtual void removeChildShape(btCollisionShape* shape);
+
+	void removeChildShapeByIndex(int childShapeindex);
+
+
+	int		getNumChildShapes() const
+	{
+		return int (m_children.size());
+	}
+
+	btCollisionShape* getChildShape(int index)
+	{
+		return m_children[index].m_childShape;
+	}
+	const btCollisionShape* getChildShape(int index) const
+	{
+		return m_children[index].m_childShape;
+	}
+
+	btTransform&	getChildTransform(int index)
+	{
+		return m_children[index].m_transform;
+	}
+	const btTransform&	getChildTransform(int index) const
+	{
+		return m_children[index].m_transform;
+	}
+
+	///set a new transform for a child, and update internal data structures (local aabb and dynamic tree)
+	void	updateChildTransform(int childIndex, const btTransform& newChildTransform, bool shouldRecalculateLocalAabb = true);
+
+
+	btCompoundShapeChild* getChildList()
+	{
+		return &m_children[0];
+	}
+
+	///getAabb's default implementation is brute force, expected derived classes to implement a fast dedicated version
+	virtual	void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const;
+
+	/** Re-calculate the local Aabb. Is called at the end of removeChildShapes. 
+	Use this yourself if you modify the children or their transforms. */
+	virtual void recalculateLocalAabb(); 
+
+	virtual void	setLocalScaling(const btVector3& scaling);
+
+	virtual const btVector3& getLocalScaling() const 
+	{
+		return m_localScaling;
+	}
+
+	virtual void	calculateLocalInertia(btScalar mass,btVector3& inertia) const;
+
+	virtual void	setMargin(btScalar margin)
+	{
+		m_collisionMargin = margin;
+	}
+	virtual btScalar	getMargin() const
+	{
+		return m_collisionMargin;
+	}
+	virtual const char*	getName()const
+	{
+		return "Compound";
+	}
+
+	const btDbvt*	getDynamicAabbTree() const
+	{
+		return m_dynamicAabbTree;
+	}
+	
+	btDbvt*	getDynamicAabbTree()
+	{
+		return m_dynamicAabbTree;
+	}
+
+	void createAabbTreeFromChildren();
+
+	///computes the exact moment of inertia and the transform from the coordinate system defined by the principal axes of the moment of inertia
+	///and the center of mass to the current coordinate system. "masses" points to an array of masses of the children. The resulting transform
+	///"principal" has to be applied inversely to all children transforms in order for the local coordinate system of the compound
+	///shape to be centered at the center of mass and to coincide with the principal axes. This also necessitates a correction of the world transform
+	///of the collision object by the principal transform.
+	void calculatePrincipalAxisTransform(btScalar* masses, btTransform& principal, btVector3& inertia) const;
+
+	int	getUpdateRevision() const
+	{
+		return m_updateRevision;
+	}
+
+	virtual	int	calculateSerializeBufferSize() const;
+
+	///fills the dataBuffer and returns the struct name (and 0 on failure)
+	virtual	const char*	serialize(void* dataBuffer, btSerializer* serializer) const;
+
+
+};
+
+///do not change those serialization structures, it requires an updated sBulletDNAstr/sBulletDNAstr64
+struct btCompoundShapeChildData
+{
+	btTransformFloatData	m_transform;
+	btCollisionShapeData	*m_childShape;
+	int						m_childShapeType;
+	float					m_childMargin;
+};
+
+///do not change those serialization structures, it requires an updated sBulletDNAstr/sBulletDNAstr64
+struct	btCompoundShapeData
+{
+	btCollisionShapeData		m_collisionShapeData;
+
+	btCompoundShapeChildData	*m_childShapePtr;
+
+	int							m_numChildShapes;
+
+	float	m_collisionMargin;
+
+};
+
+
+SIMD_FORCE_INLINE	int	btCompoundShape::calculateSerializeBufferSize() const
+{
+	return sizeof(btCompoundShapeData);
+}
+
+
+
+
+
+
+
+#endif //BT_COMPOUND_SHAPE_H