/rust/registry/src/index.crates.io-1949cf8c6b5b557f/moxcms-0.7.11/src/matan/discontinuity.rs
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1 | | /* |
2 | | * // Copyright (c) Radzivon Bartoshyk 6/2025. All rights reserved. |
3 | | * // |
4 | | * // Redistribution and use in source and binary forms, with or without modification, |
5 | | * // are permitted provided that the following conditions are met: |
6 | | * // |
7 | | * // 1. Redistributions of source code must retain the above copyright notice, this |
8 | | * // list of conditions and the following disclaimer. |
9 | | * // |
10 | | * // 2. Redistributions in binary form must reproduce the above copyright notice, |
11 | | * // this list of conditions and the following disclaimer in the documentation |
12 | | * // and/or other materials provided with the distribution. |
13 | | * // |
14 | | * // 3. Neither the name of the copyright holder nor the names of its |
15 | | * // contributors may be used to endorse or promote products derived from |
16 | | * // this software without specific prior written permission. |
17 | | * // |
18 | | * // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
19 | | * // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
20 | | * // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
21 | | * // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
22 | | * // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
23 | | * // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
24 | | * // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
25 | | * // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
26 | | * // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | | * // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | | */ |
29 | | use num_traits::AsPrimitive; |
30 | | |
31 | | pub(crate) trait DiscontinuitySpike { |
32 | | const SPIKE: f64; |
33 | | } |
34 | | |
35 | | impl DiscontinuitySpike for u8 { |
36 | | const SPIKE: f64 = 16.0; |
37 | | } |
38 | | |
39 | | impl DiscontinuitySpike for u16 { |
40 | | const SPIKE: f64 = 2100.; |
41 | | } |
42 | | |
43 | | impl DiscontinuitySpike for f32 { |
44 | | const SPIKE: f64 = 0.07; |
45 | | } |
46 | | |
47 | | /// Searches LUT curve for discontinuity |
48 | 0 | pub(crate) fn does_curve_have_discontinuity< |
49 | 0 | T: Copy + PartialEq + DiscontinuitySpike + AsPrimitive<f64> + 'static, |
50 | 0 | >( |
51 | 0 | curve: &[T], |
52 | 0 | ) -> bool { |
53 | 0 | if curve.len() < 2 { |
54 | 0 | return false; |
55 | 0 | } |
56 | 0 | let threshold: f64 = T::SPIKE; |
57 | 0 | let mut discontinuities = 0u64; |
58 | 0 | let mut previous_element: f64 = curve[0].as_(); |
59 | 0 | let diff: f64 = (curve[1].as_() - previous_element).abs(); |
60 | 0 | if diff > threshold { |
61 | 0 | discontinuities += 1; |
62 | 0 | } |
63 | 0 | for element in curve.iter().skip(1) { |
64 | 0 | let new_diff: f64 = (element.as_() - previous_element).abs(); |
65 | 0 | if new_diff > threshold { |
66 | 0 | discontinuities += 1; |
67 | 0 | if discontinuities > 3 { |
68 | 0 | break; |
69 | 0 | } |
70 | 0 | } |
71 | 0 | previous_element = element.as_(); |
72 | | } |
73 | 0 | discontinuities > 3 |
74 | 0 | } Unexecuted instantiation: moxcms::matan::discontinuity::does_curve_have_discontinuity::<u8> Unexecuted instantiation: moxcms::matan::discontinuity::does_curve_have_discontinuity::<u16> |