cometsfactory 0.0.3

Comet factory — classify, build and catalogue comets of any type: short-period, long-period, Halley-type, sungrazer, interstellar, main-belt comet, centaur-transition, and extinct.
Documentation 
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use std::f64::consts::PI;

pub fn deg_to_rad(deg: f64) -> f64 {
    deg * PI / 180.0
}

pub fn rad_to_deg(rad: f64) -> f64 {
    rad * 180.0 / PI
}

pub fn clamp(value: f64, min: f64, max: f64) -> f64 {
    value.clamp(min, max)
}

pub fn log10_safe(x: f64) -> f64 {
    if x <= 0.0 {
        return f64::NEG_INFINITY;
    }
    x.log10()
}

pub fn lerp(a: f64, b: f64, t: f64) -> f64 {
    a + (b - a) * t
}

pub fn spherical_to_cartesian(r: f64, theta: f64, phi: f64) -> (f64, f64, f64) {
    let x = r * theta.sin() * phi.cos();
    let y = r * theta.sin() * phi.sin();
    let z = r * theta.cos();
    (x, y, z)
}