packed_spatial_index 0.9.0

Packed static spatial index (Hilbert R-tree) for 2D/3D AABBs — SIMD range, kNN, raycast, and spatial-join queries, with zero-copy and streaming serialization.
Documentation 
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/// Default maximum number of children per tree node.
pub const DEFAULT_NODE_SIZE: usize = 16;
pub(crate) const DEFAULT_SEARCH_STACK_CAPACITY: usize = DEFAULT_NODE_SIZE;
pub(crate) const DEFAULT_NEIGHBOR_QUEUE_CAPACITY: usize = DEFAULT_NODE_SIZE;

/// Minimum index size at which `parallel(true)` enables rayon.
#[cfg(feature = "parallel")]
pub const DEFAULT_PARALLEL_MIN_ITEMS: usize = 50_000;