hkpShapeSharingUtil.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_SHAPE_SHARING_UTIL_H
- #define INC_UTILITIES_SHAPE_SHARING_UTIL_H
- #include <Common/Base/hkBase.h>
- class hkpRigidBody;
- class hkpShape;
- /// This utility class will detect identical shape structures in one or multiple rigid bodies and will change them
- /// so shapes are shared. It replaces "cloned" shapes or shapes structures with "instanced" ones.
- class hkpShapeSharingUtil
- {
- public:
- /*
- ** SHAPE SHARING
- */
- /// These options are used during shape comparison to decided whether two shape are equal or not.
- struct Options
- {
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR( HK_MEMORY_CLASS_UTILITIES, hkpShapeSharingUtil::Options );
- /// Used as a threshold for comparing float and vector values
- /// Defaults to 0.
- /// For a sphere shape this value applies to the radius of 2 spheres
- /// For a box shape this value applies to the extents
- float m_equalityThreshold;
- /// If true (default), the utility will check for permutations of vertices/triangles/planes when comparing hkpSimpleMeshShape or
- /// hkpConvexVerticesShape objects. This will possibly detect more instanced shapes but due to the increased amount of comparisons
- /// it will take longer time. When the option is off, vertices, triangles and planes are compared using the same order.
- hkBool m_detectPermutedComponents;
- /// Constructor; sets default values.
- Options();
- };
- /// Information regarding the results of the algorithm.
- struct Results
- {
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR( HK_MEMORY_CLASS_UTILITIES, hkpShapeSharingUtil::Results );
- /// Number of shapes originally duplicated and now reused.
- /// This is equal to the number of shapes that have been dereferenced by the shareShapes() call
- int m_numSharedShapes;
- /// Constructor; resets values.
- Results();
-
- /// Using the HK_REPORT macro, it reports these results
- void report();
- /// Initializes the results to 0.
- void reset();
- };
- /// Given a set of rigid bodies, it will try to change their shape hierarchies so cloned shapes (identical shapes) are
- /// shared (instanced) rather than duplicated.
- static hkResult HK_CALL shareShapes (hkArray<hkpRigidBody*>& rigidBodies, const Options& options, Results& resultsOut);
- /// Given a rigid body, it will try to change its shape hierarchy so cloned shapes (identical shapes) are
- /// shared (instanced) rather than duplicated.
- static hkResult HK_CALL shareShapes (hkpRigidBody* rigidBody, const Options& options, Results& resultsOut);
- private:
- static hkResult findIdenticalShapes (const Options& options, class _ShapeReplacementData& sharedShapeData, Results& resultsOut);
- static const hkpShape* replaceShapesRecursively (const hkpShape* shape, class _ShapeReplacementData& shapeReplacementData);
- };
- #endif //INC_UTILITIES_SHAPE_SHARING_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.
- *
- */