hkFindClosestPositionUtil.h
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上传日期:2020-08-09
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文件大小:4k
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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_FIND_CLOSEST_POSITION_UTIL_H
- #define HK_FIND_CLOSEST_POSITION_UTIL_H
- #include <Common/Base/Types/Geometry/Aabb/hkAabb.h>
- #include <Common/Base/Memory/Memory/FreeList/hkFreeList.h>
- class hkFindClosestPositionUtil
- {
- public:
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR( HK_MEMORY_CLASS_SCENE_DATA, hkFindClosestPositionUtil );
- /// Ctor
- hkFindClosestPositionUtil();
- /// Must be called before any points are added
- void start(const hkAabb& aabb, hkReal threshold = 1e-3f);
- /// Finds the vertex closest to point, returns -1 if not found
- int findClosest(const hkVector4& point) const;
- /// Returns the index of the created point (note that many points in the same position are allowed)
- int addPoint(const hkVector4& point);
- /// Add an array of points
- void addPoints(const hkVector4* points, int numPoints);
- /// Get the point with the position
- const hkVector4& getPoint(int index) const { return m_positions[index]; }
- /// Get the positions
- const hkArray<hkVector4>& getPoints() const { return m_positions; }
- /// Called when all points are added
- void end();
- /// Searches linearly for the closest (Generally significantly slower)
- int findClosestLinearly(const hkVector4& p) const;
- #ifdef HK_DEBUG
- static hkResult HK_CALL selfCheck();
- #endif
- protected:
- hkArray<hkVector4> m_positions;
- struct IntCoord
- {
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR(HK_MEMORY_CLASS_DEMO, hkFindClosestPositionUtil::IntCoord);
- /// ==
- HK_FORCE_INLINE hkBool32 operator==(const IntCoord& rhs) const { return m_x == rhs.m_x && m_y == rhs.m_y && m_z == rhs.m_z; }
- /// !=
- HK_FORCE_INLINE hkBool32 operator!=(const IntCoord& rhs) const { return !(*this == rhs); }
- HK_FORCE_INLINE hkUint32 calculateHash() const
- {
- hkUint32 hash = hkUint32(m_x) ^ ((hkUint32(m_y) << 16) + (hkUint32(m_y) >> 16)) ^ (hkUint32(m_z) << 8);
- // Make sure cannot be -1
- return hkUint32(hash & ~1);
- }
- int m_x;
- int m_y;
- int m_z;
- };
- struct Box
- {
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR(HK_MEMORY_CLASS_DEMO, hkFindClosestPositionUtil::Box);
- enum { MAX_INDICES = 8 };
- IntCoord m_coord;
- int m_indices[MAX_INDICES];
- int m_numIndices;
- Box* m_next;
- };
- void _findClosest(const IntCoord& coord, const hkVector4& point, hkReal& closestDistInOut, int& closestIndexInOut) const;
- HK_FORCE_INLINE void _calculateIntCoord(const hkVector4& p, IntCoord& coord) const;
- hkFreeList m_boxFreeList; ///
- hkPointerMap<hkUint32, Box*> m_hashMap; ///
- hkAabb m_aabb;
- hkReal m_threshold;
- hkVector4 m_offset;
- hkVector4 m_scale;
- };
- #endif // HK_FIND_CLOSEST_POSITION_UTIL_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.
- *
- */