Method then

src/transform.rs:39–45

(self, next: TransformOperation)

impl TransformOperation {
    fn then(self, next: TransformOperation) -> Self {
        match (self, next) {
            (Self::Identity, next) => next,
            (this, Self::Identity) => this,
            (this, next) => Self::Then(Box::new(this), Box::new(next)),
        }
    }

    fn transform_value(&self, value: f64) -> Option<f64> {
        match self {