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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// SPDX-FileCopyrightText: Copyright (c) 2008-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
#ifndef GU_AABB_TREE_UPDATE_MAP_H
#define GU_AABB_TREE_UPDATE_MAP_H
#include "common/PxPhysXCommonConfig.h"
#include "GuPrunerTypedef.h"
#include "foundation/PxArray.h"
namespace physx
{
namespace Gu
{
class AABBTree;
// Maps pruning pool indices to AABB-tree indices (i.e. locates the object's box in the aabb-tree nodes pool)
//
// The map spans pool indices from 0..N-1, where N is the number of pool entries when the map was created from a tree.
//
// It maps:
// to node indices in the range 0..M-1, where M is the number of nodes in the tree the map was created from,
// or to INVALID_NODE_ID if the pool entry was removed or pool index is outside input domain.
//
// The map is the inverse of the tree mapping: (node[map[poolID]].primitive == poolID) is true at all times.
class AABBTreeUpdateMap
{
public:
AABBTreeUpdateMap() {}
~AABBTreeUpdateMap() {}
void release()
{
mMapping.reset();
}
// indices offset used when indices are shifted from objects (used for merged trees)
PX_PHYSX_COMMON_API void initMap(PxU32 numPoolObjects, const AABBTree& tree);
PX_PHYSX_COMMON_API void invalidate(PoolIndex poolIndex, PoolIndex replacementPoolIndex, AABBTree& tree);
PX_FORCE_INLINE TreeNodeIndex operator[](PxU32 poolIndex) const
{
return poolIndex < mMapping.size() ? mMapping[poolIndex] : INVALID_NODE_ID;
}
private:
// maps from prunerIndex (index in the PruningPool) to treeNode index
// this will only map to leaf tree nodes
PxArray<TreeNodeIndex> mMapping;
};
}
}
#endif