hkpConstraintUtils.h
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- /*
- *
- * Confidential Information of Telekinesys Research Limited (t/a Havok). Not for disclosure or distribution without Havok's
- * prior written consent. This software contains code, techniques and know-how which is confidential and proprietary to Havok.
- * Level 2 and Level 3 source code contains trade secrets of Havok. Havok Software (C) Copyright 1999-2009 Telekinesys Research Limited t/a Havok. All Rights Reserved. Use of this software is subject to the terms of an end user license agreement.
- *
- */
- #ifndef INC_UTILITIES_CONSTRAINTUTILS_H
- #define INC_UTILITIES_CONSTRAINTUTILS_H
- #include <Common/Base/hkBase.h>
- class hkpConstraintInstance;
- class hkpConstraintMotor;
- class hkpPositionConstraintMotor;
- class hkpConstraintChainInstance;
- class hkpBallSocketChainData;
- class hkpEntity;
- class hkVector4;
- class hkpConstraintInstance;
- class hkpConstraintMotor;
- class hkpPositionConstraintMotor;
- class hkpConstraintChainInstance;
- class hkpBallSocketChainData;
- class hkpEntity;
- class hkVector4;
- class hkpConstraintData;
- /// Constraint utility functions.
- class hkpConstraintUtils
- {
- public:
- /// Converts the given constraint to its powered counterpart, using the given motor. If the constraint cannot be powered or it's powered already it returns HK_NULL
- /// and raises a warning.
- static hkpConstraintInstance* HK_CALL convertToPowered (const hkpConstraintInstance* originalConstraint, hkpConstraintMotor* constraintMotor, hkBool enableMotors);
- /// Converts the given constraint to its corresponding 'limits' counterpart. This only works for powered/non-powered hinge and ragdoll constraints.
- /// It returns the original constraint if it already is of a 'limits' type.
- /// The function returns HK_NULL and asserts for all other constraints.
- static hkpConstraintInstance* HK_CALL convertToLimits (hkpConstraintInstance* originalConstraint);
- /// Checks whether the linear component of a constraint is valid. If large errors (distance between pivots > maxAllowedError) are detected,
- /// the constraint's child object (A) is moved towards the position of the parent object (B) by the amount specified by "relativeDisplacementTowardsParent".
- /// This can be called for the constraints of a rag doll to avoid the situation of the ragdoll getting stuck with an arm / leg in the landscape (by moving the child
- /// rigid body towards the parent, the rag doll is actually "pushed" away from the landscape.
- /// Notice that this method expects the pivots of rigid bodies to match the constraints representing the joints.
- /// The method return true if any fix up is done, false if no fix up is done.
- static hkBool HK_CALL checkAndFixConstraint (const hkpConstraintInstance* constraint, hkReal maxAllowedError = 0.05f, hkReal relativeDisplacementTowardsParent = 0.8f);
- /// Extracts pivot vectors from the constraint.
- static hkResult HK_CALL getConstraintPivots(const hkpConstraintInstance* constraint, hkVector4& pivotA, hkVector4& pivotB);
- /// Extracts motors from the constraints.
- static hkResult HK_CALL getConstraintMotors(const hkpConstraintData* constraintData, hkpConstraintMotor*& motor0, hkpConstraintMotor*& motor1, hkpConstraintMotor*& motor2 );
- };
- #endif // INC_UTILITIES_CONSTRAINTUTILS_H
- /*
- * Havok SDK - NO SOURCE PC DOWNLOAD, BUILD(#20090216)
- *
- * Confidential Information of Havok. (C) Copyright 1999-2009
- * Telekinesys Research Limited t/a Havok. All Rights Reserved. The Havok
- * Logo, and the Havok buzzsaw logo are trademarks of Havok. Title, ownership
- * rights, and intellectual property rights in the Havok software remain in
- * Havok and/or its suppliers.
- *
- * Use of this software for evaluation purposes is subject to and indicates
- * acceptance of the End User licence Agreement for this product. A copy of
- * the license is included with this software and is also available at www.havok.com/tryhavok.
- *
- */