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//! Spline control points. //! //! A control point associates to a “sampling value” (a.k.a. time) a carriede value that can be //! interpolated along the curve made by the control points. //! //! Splines constructed with this crate have the property that it’s possible to change the //! interpolation mode on a key-based way, allowing you to implement and encode complex curves. #[cfg(feature = "serialization")] use serde_derive::{Deserialize, Serialize}; use crate::interpolation::Interpolation; /// A spline control point. /// /// This type associates a value at a given interpolation parameter value. It also contains an /// interpolation mode used to determine how to interpolate values on the segment defined by this /// key and the next one – if existing. Have a look at [`Interpolation`] for further details. /// /// [`Interpolation`]: crate::interpolation::Interpolation #[derive(Copy, Clone, Debug, Eq, PartialEq)] #[cfg_attr(feature = "serialization", derive(Deserialize, Serialize))] #[cfg_attr(feature = "serialization", serde(rename_all = "snake_case"))] pub struct Key<T, V> { /// Interpolation parameter at which the [`Key`] should be reached. pub t: T, /// Carried value. pub value: V, /// Interpolation mode. pub interpolation: Interpolation<T, V>, } impl<T, V> Key<T, V> { /// Create a new key. pub fn new(t: T, value: V, interpolation: Interpolation<T, V>) -> Self { Key { t, value, interpolation, } } }