callistos 0.0.3

Callisto celestial simulation crate for the MilkyWay SolarSystem workspace
Documentation 
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#[derive(Debug, Clone, Copy, PartialEq)]
pub struct ElevationSample {
    pub latitude_deg: f64,
    pub longitude_deg: f64,
    pub elevation_m: f64,
}

pub fn sample_dem(latitude_deg: f64, longitude_deg: f64) -> ElevationSample {
    let valhalla_bias =
        if (5.0..=25.0).contains(&latitude_deg) && (-20.0..=20.0).contains(&longitude_deg) {
            -3_200.0
        } else {
            0.0
        };
    let asgard_bias =
        if (-35.0..=-15.0).contains(&latitude_deg) && (120.0..=160.0).contains(&longitude_deg) {
            -1_800.0
        } else {
            0.0
        };
    let wave = latitude_deg.to_radians().sin() * 400.0 + longitude_deg.to_radians().cos() * 300.0;
    ElevationSample {
        latitude_deg,
        longitude_deg,
        elevation_m: valhalla_bias + asgard_bias + wave,
    }
}