Struct CoordinateGeneration 

pub struct CoordinateGeneration(/* private fields */);

How many times the coordinates of a structure have changed.

Everything derived from positions — spatial indices, cached distances, views handed to a caller — records the generation it was built against. Using one after the coordinates moved is then a detectable mistake rather than a silently wrong answer.

Implementations

impl CoordinateGeneration

pub const INITIAL: CoordinateGeneration

The generation of a structure that has not been edited.

pub const fn from_raw(value: u64) -> CoordinateGeneration

Rebuilds a generation from a value previously produced by this type.

The counter is opaque to callers that only need freshness checks, but preserving it at an interop boundary is useful when a cached view is serialised or handed between language runtimes. No validation is required because every u64 is a representable generation.

pub const fn next(self) -> Option<CoordinateGeneration>

Returns the next generation, or None when the counter is exhausted.

pub const fn get(self) -> u64

The raw counter.

Trait Implementations

impl Clone for CoordinateGeneration

fn clone(&self) -> CoordinateGeneration

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for CoordinateGeneration

impl Debug for CoordinateGeneration

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for CoordinateGeneration

fn default() -> CoordinateGeneration

Returns the “default value” for a type.

impl Eq for CoordinateGeneration

impl Hash for CoordinateGeneration

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for CoordinateGeneration

fn cmp(&self, other: &CoordinateGeneration) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for CoordinateGeneration

fn eq(&self, other: &CoordinateGeneration) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for CoordinateGeneration

fn partial_cmp(&self, other: &CoordinateGeneration) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for CoordinateGeneration