Struct NavigationSnapshot 

pub struct NavigationSnapshot { /* private fields */ }

Vessel state at an instant, as far as the producer knows.

Every field except the stale flag is optional: before the first fix nothing is known; an intake provides no heading. Consumers show missing fields as unknown.

Implementations

impl NavigationSnapshot

pub const EMPTY: Self

Empty snapshot.

pub const fn with_position( self, position: Observed<Position, Distance>, source: PositionSource, ) -> Self

Sets position and source.

pub const fn with_ground_track(self, track: GroundTrack) -> Self

Sets course and speed over ground.

pub const fn with_heading( self, heading: TrueCourse, sigma: Option<Angle>, ) -> Self

Sets heading and its uncertainty.

pub const fn with_horizontal_error(self, ellipse: ErrorEllipse) -> Self

Sets the position error ellipse.

pub const fn with_integrity(self, integrity: NavigationIntegrity) -> Self

Sets the producer’s integrity verdict.

pub const fn with_age(self, age: Option<Duration>, stale: bool) -> Self

Sets position age and staleness.

pub const fn position(&self) -> Option<&Observed<Position, Distance>>

Position with time and quality; None if unknown.

pub const fn source(&self) -> Option<PositionSource>

Position source, if any.

pub const fn ground_track(&self) -> Option<GroundTrack>

Course and speed over ground, if known.

pub const fn heading(&self) -> Option<TrueCourse>

Heading (bow direction, distinct from COG), if known.

pub const fn heading_sigma(&self) -> Option<Angle>

1σ heading uncertainty, if known.

pub const fn horizontal_error(&self) -> Option<ErrorEllipse>

1σ position error ellipse, if known.

pub const fn integrity(&self) -> Option<NavigationIntegrity>

Integrity, if assessed by the producer (an intake reports a source, an estimator reports integrity).

pub const fn age(&self) -> Option<Duration>

Position age at snapshot time; None without a position or if the position is later than the snapshot.

pub const fn is_stale(&self) -> bool

Whether the position is older than the producer’s limit.

A stale position is still reported as the best available, but must not be presented as current.

Trait Implementations

impl Clone for NavigationSnapshot

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for NavigationSnapshot

impl Debug for NavigationSnapshot

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

Formats the value using the given formatter.

impl PartialEq for NavigationSnapshot

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for NavigationSnapshot