godot/core/math/octree.h

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/*  octree.h                                                             */
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#ifndef OCTREE_H
#define OCTREE_H

#define OCTREE_ELEMENT_INVALID_ID 0
#define OCTREE_SIZE_LIMIT 1e15
#define OCTREE_DEFAULT_OCTANT_LIMIT 0

// We want 2 versions of the octree, Octree
// and Octree_CL which uses cached lists (optimized).
// we don't want to use the extra memory of cached lists on
// the non cached list version, so we use macros
// to avoid duplicating the code which is in octree_definition.
// The name of the class is overridden and the changes with the define
// OCTREE_USE_CACHED_LISTS.

// The two classes can be used identically but one contains the cached
// list optimization.

// standard octree
#define OCTREE_CLASS_NAME Octree
#undef OCTREE_USE_CACHED_LISTS
#include "octree_definition.inc"
#undef OCTREE_CLASS_NAME

// cached lists octree
#define OCTREE_CLASS_NAME Octree_CL
#define OCTREE_USE_CACHED_LISTS
#include "octree_definition.inc"
#undef OCTREE_CLASS_NAME

#endif // OCTREE_H