hkpGskCache.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 HK_COLLIDE2_GSK_CACHE
- #define HK_COLLIDE2_GSK_CACHE
- class hkpConvexShape;
- class hkpTriangleShape;
- /// Details about a single contact point in a convex-convex collision manifold
- class hkpGskCache
- {
- public:
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR( HK_MEMORY_CLASS_CDINFO, hkpGskCache );
- /// The vertex ids of object A immediately followed by vertex ids of object B.
- /// Check m_dimA and m_dimB for the number of vertices stored in this array.
- /// E.g. If object A collides with one of its vertices and hits object B at an edge,
- /// than m_vertices[0] is the vertex id of object A, m_vertices[1] and m_vertices[2]
- /// are the vertex ids of edge B and m_vertices[3] is unused.
- hkUint16 m_vertices[4];
- /// The number vertices of object A which support this contact.
- /// E.g.
- /// - If object A is a sphere: m_dimA == 1 (the center).
- /// - If object A collides with an edge: m_dimA == 2
- /// - If object A collides with a face: m_dimA == 3
- hkUint8 m_dimA;
- /// The number vertices of object B which support this contact.
- /// See m_dimA for details.
- hkUint8 m_dimB;
- enum MaxDim
- {
- MAX_DIM_MAX = 15
- };
- /// The total number of vertices in object A clipped to [1..3] or 15 if object A has more than 3 vertices.
- hkUint8 m_maxDimA : 4;
- /// The total number of vertices in object B clipped to [1..3] or 15 if object B has more than 3 vertices.
- hkUint8 m_maxDimB : 4;
- typedef hkUint8 GskFlags;
- enum GskFlagValues
- {
- // Cylinder flags
- GSK_FLAGS_SHAPE_A_IS_CYLINDER = 0x01,
- GSK_FLAGS_SHAPE_B_IS_CYLINDER = 0x02,
- GSK_FLAGS_REPLACE_SHAPE_A_WITH_CAPSULE = 0x04,
- GSK_FLAGS_REPLACE_SHAPE_B_WITH_CAPSULE = 0x08,
- GSK_FLAGS_CYLINDER_AGENT_FLAGS = 0x0f,
- // Other flags
- GSK_FLAGS_DISABLE_CONTACT_TIMS = 0x10,
- GSK_FLAGS_CONVEX_LIST_IN_GSK_MODE = 0x20,
- GSK_FLAGS_PROCESS_FUNCTION_CALLED = 0x40,
- // Be the first one to use the last bit below !!
- ONE_BIT_STILL_UNUSED = 0x80
- };
- /// Extra data used by the gsk-related agent3's
- hkUint8 m_gskFlags;
- //
- // Internal section
- //
- public:
- void init( const hkpConvexShape* shapeA, const hkpConvexShape* shapeB, const hkTransform& btoa );
- void initTriangle( const hkpConvexShape* shapeA, const hkpTriangleShape* shapeB, const hkTransform& btoa );
- inline void flip();
- };
- HK_CLASSALIGN16(class) hkGskCache16 : public hkpGskCache
- {
- public:
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR( HK_MEMORY_CLASS_CDINFO, hkGskCache16 );
- void set(const hkGskCache16& other)
- {
- # if defined(HK_PLATFORM_PS3_SPU) || defined(HK_PLATFORM_PS3_PPU)
- vec_int4* d = (vec_int4*)this;
- *d = *(const vec_int4*)&other;
- # else
- *this = other;
- # endif
- }
- };
- inline void hkpGskCache::flip()
- {
- hkUint8 h;
- h = m_maxDimA; m_maxDimA = m_maxDimB; m_maxDimB = h;
- h = m_dimA; m_dimA = m_dimB; m_dimB = h;
-
- int last = m_dimA + m_dimB -1;
- hkUint16 k;
- // exchange first and last vertex, this should do it except for edge-edge cases
- k = m_vertices[0]; m_vertices[0] = m_vertices[last]; m_vertices[last] = k;
- if ( (m_dimA & m_dimB) ==2 ) // edge edge case
- {
- // 0 and 3 are swapped already, now swap 1 and 2
- k = m_vertices[1]; m_vertices[1] = m_vertices[2]; m_vertices[2] = k;
- }
- }
- #endif // HK_COLLIDE2_GSK_CACHE
- /*
- * 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.
- *
- */