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Satellite toolkit for Elixir with SGP4 propagation, coordinate transforms, GNSS positioning, orbit determination, conjunction assessment, pass prediction, and a Rust NIF backend.

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sidereon native sidereon_nif src geometry_quality.rs
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native/sidereon_nif/src/geometry_quality.rs 

//! Tuple encoding for core geometry observability diagnostics.



use rustler::types::tuple::make_tuple;

use rustler::{Encoder, Env, Term};

use sidereon_core::geometry_quality::{GeometryQuality, ObservabilityTier};



mod atoms {

    rustler::atoms! {

        rank_deficient,

        zero_redundancy,

        weak,

        nominal

    }

}



pub(crate) fn geometry_quality_to_term<'a>(env: Env<'a>, value: GeometryQuality) -> Term<'a> {

    make_tuple(

        env,

        &[

            tier_to_atom(value.tier).encode(env),

            (value.redundancy as i64).encode(env),

            (value.rank as u64).encode(env),

            value.condition_number.encode(env),

            value.gdop.encode(env),

            value.raim_checkable.encode(env),

            value.covariance_validated.encode(env),

        ],

    )

}



fn tier_to_atom(tier: ObservabilityTier) -> rustler::Atom {

    match tier {

        ObservabilityTier::RankDeficient => atoms::rank_deficient(),

        ObservabilityTier::ZeroRedundancy => atoms::zero_redundancy(),

        ObservabilityTier::Weak => atoms::weak(),

        ObservabilityTier::Nominal => atoms::nominal(),

    }

}