hkpInternalConstraintUtils.h
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上传日期:2020-08-09
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文件大小:3k
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其他游戏
开发平台:
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_DYNAMICS2_INTERNAL_CONSTRAINT_UTILS_H
- #define HK_DYNAMICS2_INTERNAL_CONSTRAINT_UTILS_H
- extern "C"
- {
- /// Calculates the relative angle between twist axes given plane axis
- void HK_CALL hkInternalConstraintUtils_calcRelativeAngle(
- const hkVector4& twistAxisAinWorld, const hkVector4& twistAxisBinWorld,
- const hkVector4& planeAxisAinWorld, const hkVector4& planeAxisBinWorld,
- hkVector4& axisOut, hkPadSpu<hkReal>& angleOut );
- }
- HK_FORCE_INLINE void HK_CALL hkInternalConstraintUtils_inlineCalcRelativeAngle(
- const hkVector4& twistAxisAinWorld, const hkVector4& twistAxisBinWorld,
- const hkVector4& planeAxisAinWorld, const hkVector4& planeAxisBinWorld,
- hkVector4& axisOut, hkPadSpu<hkReal>& angleOut, hkPadSpu<hkReal>& tauMaxOut )
- {
- // Note : This algorithm is replicated inside the physics tools (max/maya)
- // Any changes should be ported there also.
- hkVector4 twist_axis_ws;
- twist_axis_ws.setAdd4( twistAxisBinWorld , twistAxisAinWorld );
- const hkReal twist_axis_ws_length3 = twist_axis_ws.length3();
- if (twist_axis_ws_length3>1e-16f)
- {
- tauMaxOut = twist_axis_ws_length3 * 0.5f;
- twist_axis_ws.mul4(1.0f / twist_axis_ws_length3);
- }
- else
- {
- tauMaxOut = 0.0f;
- twist_axis_ws = twistAxisBinWorld;
- }
- hkRotation m_ws_us;
- {
- hkVector4& c0 = m_ws_us.getColumn(0);
- hkVector4& c1 = m_ws_us.getColumn(1);
- hkVector4& c2 = m_ws_us.getColumn(2);
- c0 = twist_axis_ws;
- c1.setCross(twist_axis_ws, planeAxisBinWorld);
- c2.setCross(c1, c0);
- }
- #ifdef HK_PS2
- hkVector4 a_us;
- a_us._setRotatedInverseDir(m_ws_us, planeAxisAinWorld);
- hkReal currentTwistAngle = hkMath_atan2fApproximation( a_us(1), a_us(2));
- #else
- hkReal d1 = m_ws_us.getColumn(1).dot3( planeAxisAinWorld );
- hkReal d2 = m_ws_us.getColumn(2).dot3( planeAxisAinWorld );
- hkReal currentTwistAngle = hkMath_atan2fApproximation( d1, d2);
- #endif
- // Explicitly specify angle calculated above.
- angleOut = currentTwistAngle;
- axisOut = twist_axis_ws;
- }
- #endif // HK_DYNAMICS2_INTERNAL_CONSTRAINT_UTILS_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.
- *
- */