Struct AltitudeSwitch 

pub struct AltitudeSwitch<Below, Above> { /* private fields */ }

Routes to one of two force models by comparing raw position Y with a cutoff.

Use it to bound a dense-atmosphere model: at and below the cutoff, forces come from e.g. BallisticForces; above it, from a vacuum model such as UniformGravity or CentralGravity. The switch reads Y, and BallisticForces reads Y as altitude above sea level, so it switches on altitude only in a frame where Y is altitude: the flat frame, or a local frame with a CentralGravity center at (0, -R, 0) (R the planet radius), where Y stays near altitude close to the launch point. In an Earth-centered frame (center at the origin; the icbm_midcourse example starts at Y = R + h) Y is measured from Earth’s center, so neither the cutoff nor BallisticForces reads altitude; there, compare the radius yourself, as that example does for its reentry handoff.

Implementations

impl<Below, Above> AltitudeSwitch<Below, Above>

pub fn new(below: Below, above: Above, cutoff_altitude_m: f64) -> Result<Self>

Switch from below to above at cutoff_altitude_m (inclusive below). The cutoff is compared with raw position Y, so it is an altitude only in a frame where Y is altitude (see the type docs).

pub fn below(&self) -> &Below

Model used at and below the cutoff.

pub fn above(&self) -> &Above

Model used above the cutoff.

pub fn cutoff_altitude_m(&self) -> f64

Handoff value in metres, compared with raw position Y: an altitude only in a frame where Y is altitude (see the type docs).

Trait Implementations

impl<Below: Clone, Above: Clone> Clone for AltitudeSwitch<Below, Above>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Below: Debug, Above: Debug> Debug for AltitudeSwitch<Below, Above>

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

Formats the value using the given formatter.

impl<Below: ForceModel, Above: ForceModel> ForceModel for AltitudeSwitch<Below, Above>

fn acceleration(&self, state: &FlightState, mass_kg: f64) -> Result<Vec3>

Acceleration in world-frame metres per second squared.

fn acceleration_with_axis( &self, state: &FlightState, mass_kg: f64, _body_axis: Vec3, ) -> Result<Vec3>

Acceleration when the commanded body axis is known, for angle-of-attack-aware models (body lift, induced drag). body_axis is the solver-resolved unit thrust axis at this stage. The default ignores the axis, which keeps every orientation-blind model (gravity, plain drag) bit-identical.