eazing 0.0.1

The blazingly fast and mathematically optimized `easing functions` kit.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

//! # The Decic Curve.
//!
//! An algebric curve of degree ten.
//!
//! #### formula.
//!
//! `p^10`

use crate::easing::Curve;

/// ### The [`InDecic`] Easing Function.
///
/// #### examples.
///
/// ```
/// use eazing::Curve;
/// use eazing::polynomial::decic::InDecic;
///
/// let p = InDecic.y(1.0);
/// ```
#[derive(Debug)]
pub struct InDecic;

impl Curve for InDecic {
  #[inline]
  fn y(&self, p: f32) -> f32 {
    p * p * p * p * p * p * p * p * p * p
  }
}

#[test]
fn test_in_decic() {
  let p = InDecic.y(1.0);

  assert_eq!(p, 1.0);
}

/// ### The [`OutDecic`] Easing Function.
///
/// #### examples.
///
/// ```
/// use eazing::Curve;
/// use eazing::polynomial::decic::OutDecic;
///
/// let p = OutDecic.y(1.0);
/// ```
#[derive(Debug)]
pub struct OutDecic;

impl Curve for OutDecic {
  #[inline]
  fn y(&self, p: f32) -> f32 {
    let m = p - 1.0;

    1.0 - m * m * m * m * m * m * m * m * m * m
  }
}

#[test]
fn test_out_decic() {
  let p = OutDecic.y(1.0);

  assert_eq!(p, 1.0);
}

/// ### The [`InOutDecic`] Easing Function.
///
/// #### examples.
///
/// ```
/// use eazing::Curve;
/// use eazing::polynomial::decic::InOutDecic;
///
/// let p = InOutDecic.y(1.0);
/// ```
#[derive(Debug)]
pub struct InOutDecic;

impl Curve for InOutDecic {
  #[inline]
  fn y(&self, p: f32) -> f32 {
    let m = p - 1.0;
    let t = p * 2.0;

    if t < 1.0 {
      return p * t * t * t * t * t * t * t * t;
    }

    1.0 - m * m * m * m * m * m * m * m * m * m * 512.0
  }
}

#[test]
fn test_in_out_decic() {
  let p = InOutDecic.y(1.0);

  assert_eq!(p, 1.0);
}