hkpEasePenetrationAction.h
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其他游戏
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Visual C++
- /*
- *
- * 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 HK_EASE_PENETRATION_ACTION_H
- #define HK_EASE_PENETRATION_ACTION_H
- #include <Physics/Dynamics/Action/hkpUnaryAction.h>
- #include <Common/Base/hkBase.h>
- /// You can use this action to reduce CPU hits that occur when a new body is added to a hkpWorld in a penetrating state.
- ///
- /// When you add a simple shape, like a box, and place it in a way that it deeply intersects with around 8 triangles of a landscape
- /// mesh -- then you can expect high numbers of unjustified TOI events being handled. In a simple test case we performed, there were
- /// around 10 TOIs for a moving-quality body, and around 80!!! for a critical-quality body.
- ///
- /// This utility controls the m_allowedPenetrationDepth property of a rigid body over a short time of, e.g. a few seconds, to
- /// avoid those unneeded TOIs and to allow the bodies to recover from penetration with normal collision response.
- /// After m_timePassed reaches m_duration, the m_alloedPenetrationDepth of the hkpRigidBody is set back to its original value.
- ///
- /// Additionally this utility can also reduce the strength at which the solver corrects inter-body penetrations. This is done by
- /// iterating over all contact points, and reducing the penetration distance, that is later fed into the constraint solver.
- /// As the result, less jitter may occur when bodies recover from penetration.
- class hkpEasePenetrationAction : public hkpUnaryAction
- {
- public:
- // This allows you to specify duration of the action. Other values can be set directly after the action is constructed.
- hkpEasePenetrationAction(hkpEntity* entity, hkReal duration);
- // hkpAction implementation.
- virtual void applyAction( const hkStepInfo& stepInfo );
- virtual hkpAction* clone( const hkArray<hkpEntity*>& newEntities, const hkArray<hkpPhantom*>& newPhantoms ) const ;
- public:
- /// Duration of this action. After the time passes the action removes itself from the hkpWorld.
- hkReal m_duration;
- /// Initial multiplier for the m_entity's m_allowedPenetrationDepth. It's reduced linearly with time to reach 1.0f at the end of m_duration.
- hkReal m_initialAllowedPenetrationDepthMultiplier;
- /// Initial added value for the m_entity's m_allowedPenetrationDepth. It's reduced linearly with time to reach 0.0f at the end of m_duration.
- hkReal m_initialAdditionalAllowedPenetrationDepth;
- /// Shall the action soften the solver response too, by reducing penetration distances for contact points.
- bool m_reducePenetrationDistance;
- /// Initial distance multiplier applied for all penetrating contact points. It's reduced linearly with time to reach 1.0f at the end of m_duration.
- /// Don't use small values, as this may cause bodies to fall through the ground. It's set to 0.2 by default.
- hkReal m_initialContactDepthMultiplier;
- private:
- /// Time passed since the action was added to the world.
- hkReal m_timePassed;
- /// Original allowed penetration depth of the m_entity.
- hkReal m_originalAllowedPenetrationDepth;
- };
- #endif // HK_EASE_PENETRATION_ACTION_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.
- *
- */