Galactica/crates/util/src/lib.rs

#![warn(missing_docs)]

//! Various utilities

use anyhow::bail;
use nalgebra::Vector2;

pub mod constants;
pub mod timing;

/// Convert an angle in degrees to radians
pub fn to_radians(degrees: f32) -> f32 {
	return (degrees / 360.0) * std::f32::consts::TAU;
}

/// Compute the clockwise angle between two vectors
/// Returns a value in [-pi, pi]
pub fn clockwise_angle(a: &Vector2<f32>, b: &Vector2<f32>) -> f32 {
	(a.x * b.y - b.x * a.y).atan2(a.dot(&b))
}

/// Convert a rhai error to an anyhow error.
/// We can't do this directly, since anyhow requires send + sync,
/// and we don't need send+sync on rhai.
pub fn rhai_error_to_anyhow<T, E>(r: Result<T, E>) -> anyhow::Result<T>
where
	E: ToString,
{
	match r {
		Ok(x) => Ok(x),
		Err(e) => {
			bail!("{}", e.to_string())
		}
	}
}