eazy_core/
interpolation.rs

1pub mod linear;
2pub mod piecewize;
3pub mod polynomial;
4pub mod rational;
5pub mod trigonometric;
6
7use crate::Curve;
8
9/// ### The [`Interpolation`] Function User Access.
10///
11/// Wraps all interpolation functions in one place.
12///
13/// #### examples.
14///
15/// ```rust
16/// use eazy::interpolation::Interpolation;
17/// use eazy::Curve;
18///
19/// let p = Interpolation::InOutSmooth.y(0.5);
20///
21/// assert_eq!(p, 0.5);
22/// ```
23#[derive(Debug, Clone)]
24pub enum Interpolation {
25  // constant.
26  None,
27  // linear.
28  // #[default]
29  Linear,
30  // polynomial:smoothstep.
31  InSmooth,
32  OutSmooth,
33  InOutSmooth,
34  // polynomial:smootherstep.
35  InSmoother,
36  OutSmoother,
37  InOutSmoother,
38  // polynomial:quartic (Inigo Quilez).
39  Quartic,
40  InvQuartic,
41  // rational:in.
42  InRationalCubic,
43  InRationalQuadratic,
44  // rational:out.
45  OutRationalCubic,
46  OutRationalQuadratic,
47  // piecewize:in.
48  InPiecewizePolynomial,
49  InPiecewizeQuadratic,
50  // piecewize:out.
51  OutPiecewizePolynomial,
52  OutPiecewizeQuadratic,
53  // trigonometric:sinusoidal (Inigo Quilez).
54  Sinusoidal,
55  InvSinusoidal,
56}
57
58impl Curve for Interpolation {
59  #[inline(always)]
60  fn y(&self, p: f32) -> f32 {
61    match self {
62      Self::None => polynomial::none::None.y(p),
63      Self::Linear => p, // Linear interpolation is identity
64      Self::InSmooth => polynomial::smoothstep::InSmooth.y(p),
65      Self::OutSmooth => polynomial::smoothstep::OutSmooth.y(p),
66      Self::InOutSmooth => polynomial::smoothstep::InOutSmooth.y(p),
67      Self::InSmoother => polynomial::smootherstep::InSmoother.y(p),
68      Self::OutSmoother => polynomial::smootherstep::OutSmoother.y(p),
69      Self::InOutSmoother => polynomial::smootherstep::InOutSmoother.y(p),
70      Self::Quartic => polynomial::quartic::Quartic.y(p),
71      Self::InvQuartic => polynomial::quartic::InvQuartic.y(p),
72      Self::InRationalCubic => rational::cubic::InRationalCubic.y(p),
73      Self::InRationalQuadratic => {
74        rational::quadratic::InRationalQuadratic.y(p)
75      }
76      Self::OutRationalCubic => rational::cubic::OutRationalCubic.y(p),
77      Self::OutRationalQuadratic => {
78        rational::quadratic::OutRationalQuadratic.y(p)
79      }
80      Self::InPiecewizePolynomial => {
81        piecewize::polynomial::InPiecewizePolynomial.y(p)
82      }
83      Self::InPiecewizeQuadratic => {
84        piecewize::quadratic::InPiecewizeQuadratic.y(p)
85      }
86      Self::OutPiecewizePolynomial => {
87        piecewize::polynomial::OutPiecewizePolynomial.y(p)
88      }
89      Self::OutPiecewizeQuadratic => {
90        piecewize::quadratic::OutPiecewizeQuadratic.y(p)
91      }
92      Self::Sinusoidal => trigonometric::sinusoidal::Sinusoidal.y(p),
93      Self::InvSinusoidal => trigonometric::sinusoidal::InvSinusoidal.y(p),
94    }
95  }
96}
eazy_core/interpolation.rs

eazy_core/
interpolation.rs
