Home | History | Annotate | Download | only in ConstraintSolver 
      1 /*
      2 Bullet Continuous Collision Detection and Physics Library
      3 Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
      4 
      5 This software is provided 'as-is', without any express or implied warranty.
      6 In no event will the authors be held liable for any damages arising from the use of this software.
      7 Permission is granted to anyone to use this software for any purpose,
      8 including commercial applications, and to alter it and redistribute it freely,
      9 subject to the following restrictions:
     10 
     11 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.
     12 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
     13 3. This notice may not be removed or altered from any source distribution.
     14 */
     15 
     16 #ifndef BT_CONTACT_CONSTRAINT_H
     17 #define BT_CONTACT_CONSTRAINT_H
     18 
     19 #include "LinearMath/btVector3.h"
     20 #include "btJacobianEntry.h"
     21 #include "btTypedConstraint.h"
     22 #include "BulletCollision/NarrowPhaseCollision/btPersistentManifold.h"
     23 
     24 ///btContactConstraint can be automatically created to solve contact constraints using the unified btTypedConstraint interface
     25 ATTRIBUTE_ALIGNED16(class) btContactConstraint : public btTypedConstraint
     26 {
     27 protected:
     28 
     29 	btPersistentManifold m_contactManifold;
     30 
     31 public:
     32 
     33 
     34 	btContactConstraint(btPersistentManifold* contactManifold,btRigidBody& rbA,btRigidBody& rbB);
     35 
     36 	void	setContactManifold(btPersistentManifold* contactManifold);
     37 
     38 	btPersistentManifold* getContactManifold()
     39 	{
     40 		return &m_contactManifold;
     41 	}
     42 
     43 	const btPersistentManifold* getContactManifold() const
     44 	{
     45 		return &m_contactManifold;
     46 	}
     47 
     48 	virtual ~btContactConstraint();
     49 
     50 	virtual void getInfo1 (btConstraintInfo1* info);
     51 
     52 	virtual void getInfo2 (btConstraintInfo2* info);
     53 
     54 	///obsolete methods
     55 	virtual void	buildJacobian();
     56 
     57 
     58 };
     59 
     60 ///very basic collision resolution without friction
     61 btScalar resolveSingleCollision(btRigidBody* body1, class btCollisionObject* colObj2, const btVector3& contactPositionWorld,const btVector3& contactNormalOnB, const struct btContactSolverInfo& solverInfo,btScalar distance);
     62 
     63 
     64 ///resolveSingleBilateral is an obsolete methods used for vehicle friction between two dynamic objects
     65 void resolveSingleBilateral(btRigidBody& body1, const btVector3& pos1,
     66                       btRigidBody& body2, const btVector3& pos2,
     67                       btScalar distance, const btVector3& normal,btScalar& impulse ,btScalar timeStep);
     68 
     69 
     70 
     71 #endif //BT_CONTACT_CONSTRAINT_H
     72