rust_rocket/
interpolation.rs

1//! Interpolation.
2
3/// The `Interpolation` Type.
4/// This represents the various forms of interpolation that can be performed.
5#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
6#[cfg_attr(feature = "bincode", derive(bincode::Encode, bincode::Decode))]
7#[derive(Debug, Copy, Clone)]
8pub enum Interpolation {
9    /// `0`
10    Step = 0,
11    /// `t`
12    Linear = 1,
13    /// `t * t * (3 - 2 * t)`
14    Smooth = 2,
15    /// `t.powi(2)`
16    Ramp = 3,
17}
18
19impl From<u8> for Interpolation {
20    fn from(raw: u8) -> Interpolation {
21        match raw {
22            0 => Interpolation::Step,
23            1 => Interpolation::Linear,
24            2 => Interpolation::Smooth,
25            3 => Interpolation::Ramp,
26            _ => Interpolation::Step,
27        }
28    }
29}
30
31impl Interpolation {
32    /// This performs the interpolation.
33    ///
34    /// # Examples
35    ///
36    /// ```
37    /// # use rust_rocket::interpolation::Interpolation;
38    /// assert_eq!(Interpolation::Linear.interpolate(0.5), 0.5);
39    /// ```
40    ///
41    /// ```
42    /// # use rust_rocket::interpolation::Interpolation;
43    /// assert_eq!(Interpolation::Step.interpolate(0.5), 0.);
44    /// ```
45    pub fn interpolate(&self, t: f32) -> f32 {
46        match *self {
47            Interpolation::Step => 0.0,
48            Interpolation::Linear => t,
49            Interpolation::Smooth => t * t * (3.0 - 2.0 * t),
50            Interpolation::Ramp => t.powi(2),
51        }
52    }
53}
rust_rocket/interpolation.rs

rust_rocket/
interpolation.rs
