Expand description
This module provides wrapper for angles to indicate in wich unit to convert them to display them or (de)serialize them.
Display
Angle types didn’t implement Display trait because they don’t have canonical unit.
Unit wrapper implement the Display trait by writting the angle value in the desired
unit followed by the unit symbole.
let angle = 90.0_f32.deg();
let rad = Radians(angle);
let deg = Degrees(angle);
let turns = Turns(angle);
assert_eq!(format!("{rad}"), "1.5707964 rad");
assert_eq!(format!("{deg}"), "90°");
assert_eq!(format!("{turns}"), "0.25 tr");(De)Serialization
By default, angle types (de)serialize into/from radians. By using a unit wrapper, the value is (de)serialize into/from the desire unit.
#[derive(Serialize, Deserialize)]
struct Foo {
rad: Radians<Angle<f32>>,
deg: Degrees<Angle<f32>>,
tr: Turns<Angle<f32>>,
}
let json = serde_json::json!{
{
"rad": 1.0,
"deg": 90.0,
"tr": 0.5,
}
};
let foo: Foo = serde_json::from_value(json).unwrap();
assert_float_eq!(foo.rad.0.to_radians(), 1.0, abs <= 0.000001);
assert_float_eq!(foo.deg.0.to_degrees(), 90.0, abs <= 0.000001);
assert_float_eq!(foo.tr.0.to_turns(), 0.5, abs <= 0.000001);