moons 0.0.2

Moon celestial simulation crate for the MilkyWay SolarSystem workspace
Documentation 
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pub const SECONDS_PER_DAY: f64 = 86_400.0;

#[derive(Debug, Clone, Copy, PartialEq)]
pub struct LunarDate {
    pub lunation_index: i64,
    pub day_in_lunation: f64,
}

impl LunarDate {
    pub fn from_elapsed_days(elapsed_days: f64) -> Self {
        let lunation_length = crate::SYNODIC_MONTH_S / SECONDS_PER_DAY;
        let lunation_index = (elapsed_days / lunation_length).floor() as i64;
        let day_in_lunation = elapsed_days - lunation_index as f64 * lunation_length;
        Self {
            lunation_index,
            day_in_lunation,
        }
    }
}