/* Copyright (c) <2003-2011> <Julio Jerez, Newton Game Dynamics>
* 
* 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.
*/

#if !defined(AFX_DGBALLCONSTRAINT_H__7C9E1F9A_5EC6_48BE_8C9F_FB90132C6619__INCLUDED_)
#define AFX_DGBALLCONSTRAINT_H__7C9E1F9A_5EC6_48BE_8C9F_FB90132C6619__INCLUDED_
#include "dgBilateralConstraint.h"

#ifdef _WIN_32_VER
	#pragma warning (disable: 4201) //nonstandard extension used : nameless struct/union
#endif


//template<class T>	class dgPool;

class dgBallConstraint;
typedef dgUnsigned32 (dgApi *dgBallJointFriction) (const dgBallConstraint& ball,dgFloat32 timestep);

class dgBallConstraint: public dgBilateralConstraint  
{
	public:
	dgVector GetJointAngle ()const;
	dgVector GetJointOmega ()const;
	dgVector GetJointForce ()const;
	void SetJointParameterCallBack (dgBallJointFriction callback);

	bool GetTwistLimitState () const; 
	void SetTwistLimitState (bool state); 

	bool GetConeLimitState () const; 
	void SetConeLimitState (bool state); 

	bool GetLatealLimitState () const; 
	void SetLatealLimitState (bool state); 

	
	void SetLimits (const dgVector& coneDir, dgFloat32 minConeAngle, dgFloat32 maxConeAngle, dgFloat32 maxTwistAngle,
		            const dgVector& bilateralDir, dgFloat32 negativeBilateralConeAngle, dgFloat32 positiveBilateralConeAngle);
	
	
	private:
	dgBallConstraint ();
    virtual ~dgBallConstraint ();
//	virtual void Remove (dgWorld* world);

	void SetPivotPoint (const dgVector& pivot);
	virtual dgUnsigned32 JacobianDerivative (dgContraintDescritor& params); 
//	static dgBallConstraint* Create(dgWorld* world);

	
	dgVector m_angles;
	union {
		unsigned m_ballLimits;
		struct {
			dgUnsigned32 m_coneLimit : 1;
			dgUnsigned32 m_twistLimit : 1;
			dgUnsigned32 m_lateralLimit : 1;
		};
	};
	dgFloat32 m_coneAngle;
	dgFloat32 m_twistAngle;
	dgFloat32 m_coneAngleCos;
	dgBallJointFriction m_jointUserCallback;
	
//	dgUnsigned32 m_reserve[3];

	friend class dgWorld; 
//	friend class dgPool<dgBallConstraint>;
};

//class dgBallConstraintArray: public dgPoolContainer<dgBallConstraint>
//{
//};


#endif