avian3d/data_structures/
pair_key.rs

1//! A unique key for a pair of identifiers.
2
3use bevy::prelude::*;
4
5/// A unique key for a pair of identifiers.
6///
7/// This can be used for efficient storage and lookup of pairs of entities or other objects.
8#[derive(Clone, Copy, Debug, Deref, DerefMut, PartialEq, Eq, Hash)]
9#[cfg_attr(feature = "serialize", derive(serde::Serialize, serde::Deserialize))]
10pub struct PairKey(pub u64);
11
12impl PairKey {
13    /// Creates a new pair key from two IDs.
14    #[inline]
15    pub const fn new(id1: u32, id2: u32) -> Self {
16        if id1 < id2 {
17            Self(((id1 as u64) << 32) | id2 as u64)
18        } else {
19            Self(((id2 as u64) << 32) | id1 as u64)
20        }
21    }
22
23    /// Gets the two IDs stored in the pair key in ascending order.
24    #[inline]
25    pub fn get(&self) -> (u32, u32) {
26        (
27            ((self.0 >> 32) & 0xFFFF_FFFF) as u32,
28            (self.0 & 0xFFFF_FFFF) as u32,
29        )
30    }
31}
avian3d/data_structures/pair_key.rs

avian3d/data_structures/
pair_key.rs
