diff --git a/.rustme/config.ron b/.rustme/config.ron new file mode 100644 index 0000000..4f87d38 --- /dev/null +++ b/.rustme/config.ron @@ -0,0 +1,65 @@ +Configuration( + files: { + "../README.md": ( + for_docs: false, + sections: [ + "header.md", + "docs.md", + "https://github.com/khonsulabs/.github/raw/main/snippets/readme-footer.md", + ], + ), + "../src/.crate-docs.md": ( + for_docs: true, + sections: [ + "docs.md", + "https://github.com/khonsulabs/.github/raw/main/snippets/readme-footer.md", + ], + ), + "../CONTRIBUTING.md": [ + "https://github.com/khonsulabs/.github/raw/main/docs/CONTRIBUTING.md", + ], + "../CODE_OF_CONDUCT.md": [ + "https://github.com/khonsulabs/.github/raw/main/docs/CODE_OF_CONDUCT.md", + ], + "../LICENSE-APACHE": [ + "https://github.com/khonsulabs/.github/raw/main/licenses/LICENSE-APACHE", + ], + "../LICENSE-MIT": [ + "https://github.com/khonsulabs/.github/raw/main/licenses/LICENSE-MIT", + ], + }, + glossaries: [ + "https://github.com/khonsulabs/.github/raw/main/snippets/glossary.ron", + { + "msrv": "1.65", + "ref-name": ( + default: "main", + release: "v0.1.0", + ), + "docs": ( + default: "https://khonsulabs.github.io/easing-function/main/easing_function/", + release: "https://docs.rs/easing-function/", + ), + "easing": ( + default: "https://khonsulabs.github.io/easing-function/main/easing_function/trait.Easing.html", + release: "https://docs.rs/easing-function/*/easing_function/trait.Easing.html", + for_docs: "crate::Easing", + ), + "easingfunction": ( + default: "https://khonsulabs.github.io/easing-function/main/easing_function/struct.EasingFunction.html", + release: "https://docs.rs/easing-function/*/easing_function/struct.EasingFunction.html", + for_docs: "crate::EasingFunction", + ), + "standard": ( + default: "https://khonsulabs.github.io/easing-function/main/easing_function/easings/enum.StandardEasing.html", + release: "https://docs.rs/easing-function/*/easing_function/easings/enum.StandardEasing.html", + for_docs: "crate::easings::StandardEasing", + ), + "sine": ( + default: "https://khonsulabs.github.io/easing-function/main/easing_function/easings/struct.EaseInOutSine.html", + release: "https://docs.rs/easing-function/*/easing_function/easings/struct.EaseInOutSine.html", + for_docs: "crate::easings::EaseInOutSine", + ), + }, + ], +) \ No newline at end of file diff --git a/.rustme/docs.md b/.rustme/docs.md new file mode 100644 index 0000000..6ce4c4f --- /dev/null +++ b/.rustme/docs.md @@ -0,0 +1,49 @@ + + + +![easing-function is considered alpha](https://img.shields.io/badge/status-alpha-orange) +[![crate version](https://img.shields.io/crates/v/muse.svg)](https://crates.io/crates/easing-function) +[![Documentation for `$ref-name$`](https://img.shields.io/badge/docs-$ref-name$-informational)]($docs$) + +A Rusty implementation of easing functions. + +## What is an Easing Function? + +An easing function is a function that describes how to apply a change of a value +over time. This library's easing functions expect input values between 0.0 and +1.0 and will return values corresponding to that range but may be outside of the +range depending on the function. + +Easing functions are typically used in animation systems to customize values +produced between keyframes (tweening). + +## Why another easing functions crate? + +When creating [Cushy](https://github.com/khonsulabs/cushy), no maintained +library seemed to offer a trait-based solution to allow for custom easing +functions in addition to the standard ones inspired by Robert Penner's original +collection. + +## Using this crate + +The [`EasingFunction`][easingfunction] type is the central type of this crate. It allows +defining an easing function in two ways: + +- [`EasingFunction::from_fn`][from_fn]: Creates an easing function from a `fn(f32) -> + f32` function. +- [`EasingFunction::new`][new]: Creates an easing function from an [`Easing`][easing] + implementor. + +This crate also provides the standard set of easing functions in the +[easings][easings] module (e.g., [`EaseInOutSine`][sine]). Finally, the +[`StandardEasings`][standard] enum provides access to the standard easing +functions through an enumeration. This enum also supports `serde` when enabling +the `serde` feature of this crate. + +[easing]: $easing$ +[easingfunction]: $easingfunction$ +[new]: $easingfunction$#method.new +[from_fn]: $easingfunction$#method.from_fn +[sine]: $sine$ +[standard]: $standard$ + diff --git a/.rustme/header.md b/.rustme/header.md new file mode 100644 index 0000000..74afd14 --- /dev/null +++ b/.rustme/header.md @@ -0,0 +1 @@ +# easing-function diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md new file mode 100644 index 0000000..f5e94d4 --- /dev/null +++ b/CODE_OF_CONDUCT.md @@ -0,0 +1,128 @@ +# Contributor Covenant Code of Conduct + +## Our Pledge + +We as members, contributors, and leaders pledge to make participation in our +community a harassment-free experience for everyone, regardless of age, body +size, visible or invisible disability, ethnicity, sex characteristics, gender +identity and expression, level of experience, education, socio-economic status, +nationality, personal appearance, race, religion, or sexual identity +and orientation. + +We pledge to act and interact in ways that contribute to an open, welcoming, +diverse, inclusive, and healthy community. + +## Our Standards + +Examples of behavior that contributes to a positive environment for our +community include: + +* Demonstrating empathy and kindness toward other people +* Being respectful of differing opinions, viewpoints, and experiences +* Giving and gracefully accepting constructive feedback +* Accepting responsibility and apologizing to those affected by our mistakes, + and learning from the experience +* Focusing on what is best not just for us as individuals, but for the + overall community + +Examples of unacceptable behavior include: + +* The use of sexualized language or imagery, and sexual attention or + advances of any kind +* Trolling, insulting or derogatory comments, and personal or political attacks +* Public or private harassment +* Publishing others' private information, such as a physical or email + address, without their explicit permission +* Other conduct which could reasonably be considered inappropriate in a + professional setting + +## Enforcement Responsibilities + +Community leaders are responsible for clarifying and enforcing our standards of +acceptable behavior and will take appropriate and fair corrective action in +response to any behavior that they deem inappropriate, threatening, offensive, +or harmful. + +Community leaders have the right and responsibility to remove, edit, or reject +comments, commits, code, wiki edits, issues, and other contributions that are +not aligned to this Code of Conduct, and will communicate reasons for moderation +decisions when appropriate. + +## Scope + +This Code of Conduct applies within all community spaces, and also applies when +an individual is officially representing the community in public spaces. +Examples of representing our community include using an official e-mail address, +posting via an official social media account, or acting as an appointed +representative at an online or offline event. + +## Enforcement + +Instances of abusive, harassing, or otherwise unacceptable behavior may be +reported to the community leaders responsible for enforcement at +moderators@khonsulabs.com. +All complaints will be reviewed and investigated promptly and fairly. + +All community leaders are obligated to respect the privacy and security of the +reporter of any incident. + +## Enforcement Guidelines + +Community leaders will follow these Community Impact Guidelines in determining +the consequences for any action they deem in violation of this Code of Conduct: + +### 1. Correction + +**Community Impact**: Use of inappropriate language or other behavior deemed +unprofessional or unwelcome in the community. + +**Consequence**: A private, written warning from community leaders, providing +clarity around the nature of the violation and an explanation of why the +behavior was inappropriate. A public apology may be requested. + +### 2. Warning + +**Community Impact**: A violation through a single incident or series +of actions. + +**Consequence**: A warning with consequences for continued behavior. No +interaction with the people involved, including unsolicited interaction with +those enforcing the Code of Conduct, for a specified period of time. This +includes avoiding interactions in community spaces as well as external channels +like social media. Violating these terms may lead to a temporary or +permanent ban. + +### 3. Temporary Ban + +**Community Impact**: A serious violation of community standards, including +sustained inappropriate behavior. + +**Consequence**: A temporary ban from any sort of interaction or public +communication with the community for a specified period of time. No public or +private interaction with the people involved, including unsolicited interaction +with those enforcing the Code of Conduct, is allowed during this period. +Violating these terms may lead to a permanent ban. + +### 4. Permanent Ban + +**Community Impact**: Demonstrating a pattern of violation of community +standards, including sustained inappropriate behavior, harassment of an +individual, or aggression toward or disparagement of classes of individuals. + +**Consequence**: A permanent ban from any sort of public interaction within +the community. + +## Attribution + +This Code of Conduct is adapted from the [Contributor Covenant][homepage], +version 2.0, available at +https://www.contributor-covenant.org/version/2/0/code_of_conduct.html. + +Community Impact Guidelines were inspired by [Mozilla's code of conduct +enforcement ladder](https://github.com/mozilla/diversity). + +[homepage]: https://www.contributor-covenant.org + +For answers to common questions about this code of conduct, see the FAQ at +https://www.contributor-covenant.org/faq. Translations are available at +https://www.contributor-covenant.org/translations. \ No newline at end of file diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md new file mode 100644 index 0000000..56b08ab --- /dev/null +++ b/CONTRIBUTING.md @@ -0,0 +1,55 @@ +# Contributing to our projects + +Thank you for your interest in contributing to one of our projects. We want +everyone to have a positive experience contributing, so please carefully review +our only requirements for contributing: + +- All contributors must agree to [our Contributor License + Agreement](https://gist.github.com/ecton/b2e1e72abfa122da5e69ed30164f739e). + This will be asked for during your first pull request. +- All contributors must uphold the standards of our [Code of + Conduct](./CODE_OF_CONDUCT.md). + +The rest of this document is recommendations/guidelines to help consistency and +communication within our projects. + +## Creating Issues + +### Reporting Bugs + +To us, if something isn't behaving as you expect it to, that's a bug. Even if +it's misbehaving due to a misunderstanding, that means there's an opportunity to +improve our documentation or examples. Please don't hesitate to let us know if +you run into any issues while working with one of our projects. + +### Requesting New Features + +When requesting new features, please include details about what problem you're +trying to solve, not just a solution to your problem. By helping the community +understand the underlying problem, we can better evaluate what the best solution +to the problem might be. + +## Contributing Changes + +We openly welcome pull requests on our projects. We don't like bugs, and if +you've found one and wish to submit a fix, we greatly appreciate it. + +If you find that fixing a bug requires a significant change, or you are wanting +to add a somewhat large feature, please submit a proposal as an issue first. We +want to make sure that your efforts have the highest chance of success, and a +short discussion before starting can go a long way towards a pull request being +merged with less revisions. + +When working on an existing issue, update the issue to reflect that you're +working on it. This will help prevent duplicated efforts. + +If you begin working on something but need some assistance, don't hesitate to +reach out inside of the issue, on [our +forums](https://community.khonsulabs.com/), or in [our +Discord](https://discord.khonsulabs.com/). We will do our best to help you. + +### Project-specific requirements + +Be sure to check if a project's README contains additional contributing +guidelines. Each project may have different tools and commands that should be +run to validate that changes pass all requirements. diff --git a/Cargo.toml b/Cargo.toml index 437320f..00c66aa 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -9,3 +9,13 @@ serde = ["dep:serde"] [dependencies] serde = { version = "1.0.208", optional = true, features = ["derive"] } + +[lints.clippy] +pedantic = { level = "warn", priority = -1 } +module_name_repetitions = "allow" +missing_errors_doc = "allow" +missing_panics_doc = "allow" + +[lints.rust] +unsafe_code = "forbid" +missing_docs = "warn" diff --git a/LICENSE-APACHE b/LICENSE-APACHE new file mode 100644 index 0000000..28add2d --- /dev/null +++ b/LICENSE-APACHE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + +Copyright 2021 Khonsu Labs LLC + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. diff --git a/LICENSE-MIT b/LICENSE-MIT new file mode 100644 index 0000000..2b84906 --- /dev/null +++ b/LICENSE-MIT @@ -0,0 +1,8 @@ +Copyright 2021 Khonsu Labs LLC + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + diff --git a/README.md b/README.md new file mode 100644 index 0000000..35d4615 --- /dev/null +++ b/README.md @@ -0,0 +1,59 @@ +# easing-function + + + + +![easing-function is considered alpha](https://img.shields.io/badge/status-alpha-orange) +[![crate version](https://img.shields.io/crates/v/muse.svg)](https://crates.io/crates/easing-function) +[![Documentation for `main`](https://img.shields.io/badge/docs-main-informational)](https://khonsulabs.github.io/easing-function/main/easing_function/) + +A Rusty implementation of easing functions. + +## What is an Easing Function? + +An easing function is a function that describes how to apply a change of a value +over time. This library's easing functions expect input values between 0.0 and +1.0 and will return values corresponding to that range but may be outside of the +range depending on the function. + +Easing functions are typically used in animation systems to customize values +produced between keyframes (tweening). + +## Why another easing functions crate? + +When creating [Cushy](https://github.com/khonsulabs/cushy), no maintained +library seemed to offer a trait-based solution to allow for custom easing +functions in addition to the standard ones inspired by Robert Penner's original +collection. + +## Using this crate + +The [`EasingFunction`][easingfunction] type is the central type of this crate. It allows +defining an easing function in two ways: + +- [`EasingFunction::from_fn`][from_fn]: Creates an easing function from a `fn(f32) -> + f32` function. +- [`EasingFunction::new`][new]: Creates an easing function from an [`Easing`][easing] + implementor. + +This crate also provides the standard set of easing functions in the +[easings][easings] module (e.g., [`EaseInOutSine`][sine]). Finally, the +[`StandardEasings`][standard] enum provides access to the standard easing +functions through an enumeration. This enum also supports `serde` when enabling +the `serde` feature of this crate. + +[easing]: https://khonsulabs.github.io/easing-function/main/easing_function/trait.Easing.html +[easingfunction]: https://khonsulabs.github.io/easing-function/main/easing_function/struct.EasingFunction.html +[new]: https://khonsulabs.github.io/easing-function/main/easing_function/struct.EasingFunction.html#method.new +[from_fn]: https://khonsulabs.github.io/easing-function/main/easing_function/struct.EasingFunction.html#method.from_fn +[sine]: https://khonsulabs.github.io/easing-function/main/easing_function/easings/struct.EaseInOutSine.html +[standard]: https://khonsulabs.github.io/easing-function/main/easing_function/easings/enum.StandardEasing.html + + +## Open-source Licenses + +This project, like all projects from [Khonsu Labs](https://khonsulabs.com/), is open-source. +This repository is available under the [MIT License](./LICENSE-MIT) or the +[Apache License 2.0](./LICENSE-APACHE). + +To learn more about contributing, please see [CONTRIBUTING.md](./CONTRIBUTING.md). diff --git a/src/.crate-docs.md b/src/.crate-docs.md new file mode 100644 index 0000000..90d1f0d --- /dev/null +++ b/src/.crate-docs.md @@ -0,0 +1,57 @@ + + + +![easing-function is considered alpha](https://img.shields.io/badge/status-alpha-orange) +[![crate version](https://img.shields.io/crates/v/muse.svg)](https://crates.io/crates/easing-function) +[![Documentation for `main`](https://img.shields.io/badge/docs-main-informational)](https://khonsulabs.github.io/easing-function/main/easing_function/) + +A Rusty implementation of easing functions. + +## What is an Easing Function? + +An easing function is a function that describes how to apply a change of a value +over time. This library's easing functions expect input values between 0.0 and +1.0 and will return values corresponding to that range but may be outside of the +range depending on the function. + +Easing functions are typically used in animation systems to customize values +produced between keyframes (tweening). + +## Why another easing functions crate? + +When creating [Cushy](https://github.com/khonsulabs/cushy), no maintained +library seemed to offer a trait-based solution to allow for custom easing +functions in addition to the standard ones inspired by Robert Penner's original +collection. + +## Using this crate + +The [`EasingFunction`][easingfunction] type is the central type of this crate. It allows +defining an easing function in two ways: + +- [`EasingFunction::from_fn`][from_fn]: Creates an easing function from a `fn(f32) -> + f32` function. +- [`EasingFunction::new`][new]: Creates an easing function from an [`Easing`][easing] + implementor. + +This crate also provides the standard set of easing functions in the +[easings][easings] module (e.g., [`EaseInOutSine`][sine]). Finally, the +[`StandardEasings`][standard] enum provides access to the standard easing +functions through an enumeration. This enum also supports `serde` when enabling +the `serde` feature of this crate. + +[easing]: crate::Easing +[easingfunction]: crate::EasingFunction +[new]: crate::EasingFunction#method.new +[from_fn]: crate::EasingFunction#method.from_fn +[sine]: crate::easings::EaseInOutSine +[standard]: crate::easings::StandardEasing + + +## Open-source Licenses + +This project, like all projects from [Khonsu Labs](https://khonsulabs.com/), is open-source. +This repository is available under the [MIT License](./LICENSE-MIT) or the +[Apache License 2.0](./LICENSE-APACHE). + +To learn more about contributing, please see [CONTRIBUTING.md](./CONTRIBUTING.md). diff --git a/src/easings.rs b/src/easings.rs index 52a1a29..5695407 100644 --- a/src/easings.rs +++ b/src/easings.rs @@ -4,40 +4,18 @@ use core::f32::consts::PI; use crate::{Easing, EasingFunction, EasingKind}; -/// An [`Easing`] function that produces a steady, linear transition. -#[derive(Clone, Copy, Debug)] -pub struct Linear; - -impl Linear { - pub fn ease(progress: f32) -> f32 { - progress - } -} - -impl Easing for Linear { - fn ease(&self, progress: f32) -> f32 { - progress - } -} - -impl From for EasingFunction { - fn from(_: Linear) -> Self { - Self::from_fn(Linear::ease) - } -} - macro_rules! declare_easing_function { - ($name:ident, $anchor_name:ident, $description:literal, $closure:expr) => { + ($name:ident, $($anchor_name:ident)?, $description:literal, $closure:expr) => { /// An [`Easing`] function that eases #[doc = $description] - #[doc = concat!(".\n\nSee for a visualization and more information.")] + $(#[doc = concat!("\n\nSee for a visualization and more information.")])? #[derive(Clone, Copy, Debug)] pub struct $name; impl $name { /// Eases #[doc = $description] - #[doc = concat!("\n\nSee for a visualization and more information.")] + $(#[doc = concat!("\n\nSee for a visualization and more information.")])? #[must_use] pub fn ease(progress: f32) -> f32 { let closure = force_closure_type($closure); @@ -60,21 +38,24 @@ macro_rules! declare_easing_function { } macro_rules! declare_easing_functions { - ($(($name:ident, $anchor_name:ident, $name_no_ease:ident, $description:literal, $closure:expr)),+) => { + ($(($name:ident, $([$anchor_name:ident],)? $name_no_ease:ident, $description:literal, $closure:expr)),+) => { + /// An enumeration of all strandard easings provided. #[derive(Clone, Copy, Eq, PartialEq, Debug, Hash)] #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))] pub enum StandardEasing { $( /// Eases #[doc = $description] - #[doc = concat!("\n\nSee for a visualization and more information.")] - $name_no_ease - ),+ + $(#[doc = concat!("\n\nSee for a visualization and more information.")])? + $name_no_ease, + )+ } impl StandardEasing { + /// Returns a collection of every variant of this enum. + #[must_use] pub fn all() -> &'static [StandardEasing] { - static ALL: [StandardEasing; 30] = [ + static ALL: [StandardEasing; 31] = [ $(StandardEasing::$name_no_ease),+ ]; &ALL @@ -118,11 +99,13 @@ macro_rules! declare_easing_functions { } $( - declare_easing_function!($name, $anchor_name, $description, $closure); + declare_easing_function!($name, $($anchor_name)?, $description, $closure); )+ }; } +/// An error returned from [`StandardEasing::try_from`] indicating the +/// [`EasingFunction`] is not a standard easing function. #[derive(Debug, Clone, PartialEq)] pub struct NonStandardEasing(pub EasingFunction); @@ -134,42 +117,42 @@ fn force_closure_type(f: impl Fn(f32) -> f32) -> impl Fn(f32) -> f32 { declare_easing_functions!( ( EaseInSine, - easeInSine, + [easeInSine], InSine, "in using a sine wave", |percent| 1. - (percent * PI / 2.).cos() ), ( EaseOutSine, - easeOutSine, + [easeOutSine], OutSine, "out using a sine wave", |percent| (percent * PI / 2.).sin() ), ( EaseInOutSine, - easeInOutSine, + [easeInOutSine], InOutSine, "in and out using a sine wave", |percent| -((percent * PI).cos() - 1.) / 2. ), ( EaseInQuadradic, - easeInQuad, + [easeInQuad], InQuadradic, "in using a quadradic (x^2) curve", squared ), ( EaseOutQuadradic, - easeOutQuad, + [easeOutQuad], OutQuadradic, "out using a quadradic (x^2) curve", |percent| 1. - squared(1. - percent) ), ( EaseInOutQuadradic, - easeInOutQuad, + [easeInOutQuad], InOutQuadradic, "in and out using a quadradic (x^2) curve", |percent| { @@ -182,21 +165,21 @@ declare_easing_functions!( ), ( EaseInCubic, - easeInCubic, + [easeInCubic], InCubic, "in using a cubic (x^3) curve", cubed ), ( EaseOutCubic, - easeOutCubic, + [easeOutCubic], OutCubic, "out using a cubic (x^3) curve", |percent| 1. - cubed(1. - percent) ), ( EaseInOutCubic, - easeInOutCubic, + [easeInOutCubic], InOutCubic, "in and out using a cubic (x^3) curve", |percent| { @@ -209,21 +192,21 @@ declare_easing_functions!( ), ( EaseInQuartic, - easeInQuart, + [easeInQuart], InQuartic, "in using a quartic (x^4) curve", quarted ), ( EaseOutQuartic, - easeOutQuart, + [easeOutQuart], OutQuartic, "out using a quartic (x^4) curve", |percent| 1. - quarted(1. - percent) ), ( EaseInOutQuartic, - easeInOutQuart, + [easeInOutQuart], InOutQuartic, "in and out using a quartic (x^4) curve", |percent| { @@ -236,21 +219,21 @@ declare_easing_functions!( ), ( EaseInQuintic, - easeInQuint, + [easeInQuint], InQuintic, "in using a quintic (x^5) curve", quinted ), ( EaseOutQuintic, - easeOutQuint, + [easeOutQuint], OutQuintic, "out using a quintic (x^5) curve", |percent| 1. - quinted(1. - percent) ), ( EaseInOutQuintic, - easeInOutQuint, + [easeInOutQuint], InOutQuintic, "in and out using a quintic (x^5) curve", |percent| { @@ -263,21 +246,21 @@ declare_easing_functions!( ), ( EaseInExponential, - easeInExpo, + [easeInExpo], InExponential, "in using an expenential curve", |percent| { 2f32.powf(10. * percent - 10.) } ), ( EaseOutExponential, - easeOutExpo, + [easeOutExpo], OutExponential, "out using an expenential curve", |percent| { 1. - 2f32.powf(-10. * percent) } ), ( EaseInOutExponential, - easeInOutExpo, + [easeInOutExpo], InOutExponential, "in and out using an expenential curve", |percent| if percent < 0.5 { @@ -288,21 +271,21 @@ declare_easing_functions!( ), ( EaseInCircular, - easeInCirc, + [easeInCirc], InCircular, "in using a curve resembling the top-left arc of a circle", |percent| 1. - (1. - squared(percent)).sqrt() ), ( EaseOutCircular, - easeOutCirc, + [easeOutCirc], OutCircular, "out using a curve resembling the top-left arc of a circle", |percent| (1. - squared(percent - 1.)).sqrt() ), ( EaseInOutCircular, - easeInOutCirc, + [easeInOutCirc], InOutCircular, "in and out using a curve resembling the top-left arc of a circle", |percent| { @@ -315,7 +298,7 @@ declare_easing_functions!( ), ( EaseInBack, - easeInBack, + [easeInBack], InBack, "in using a curve that backs away initially", |percent| { @@ -326,7 +309,7 @@ declare_easing_functions!( ), ( EaseOutBack, - easeOutBack, + [easeOutBack], OutBack, "out using a curve that backs away initially", |percent| { @@ -338,7 +321,7 @@ declare_easing_functions!( ), ( EaseInOutBack, - easeInOutBack, + [easeInOutBack], InOutBack, "in and out using a curve that backs away initially", |percent| { @@ -351,21 +334,21 @@ declare_easing_functions!( ), ( EaseInElastic, - easeInElastic, + [easeInElastic], InElastic, "in using a curve that bounces around the start initially then quickly accelerates", |percent| { -(2f32.powf(10. * percent - 10.)) * ((percent * 10. - 10.75) * C4).sin() } ), ( EaseOutElastic, - easeOutElastic, + [easeOutElastic], OutElastic, "out using a curve that bounces around the start initially then quickly accelerates", |percent| { 2f32.powf(-10. * percent) * ((percent * 10. - 0.75) * C4).sin() + 1. } ), ( EaseInOutElastic, - easeInOutElastic, + [easeInOutElastic], InOutElastic, "in and out using a curve that bounces around the start initially then quickly accelerates", |percent| if percent < 0.5 { @@ -376,14 +359,14 @@ declare_easing_functions!( ), ( EaseInBounce, - easeInBounce, + [easeInBounce], InBounce, "in using a curve that bounces progressively closer as it progresses", |percent| 1. - EaseOutBounce.ease(1. - percent) ), ( EaseOutBounce, - easeOutBounce, + [easeOutBounce], OutBounce, "out using a curve that bounces progressively closer as it progresses", |percent| { @@ -406,7 +389,7 @@ declare_easing_functions!( ), ( EaseInOutBounce, - easeInOutBounce, + [easeInOutBounce], InOutBounce, "in and out using a curve that bounces progressively closer as it progresses", |percent| { @@ -416,7 +399,8 @@ declare_easing_functions!( (1. + EaseOutBounce::ease(2. * percent - 1.)) / 2. } } - ) + ), + (Linear, Linear, "linearly", |percent| percent) ); fn squared(value: f32) -> f32 { diff --git a/src/lib.rs b/src/lib.rs index 78bed08..62beb6c 100644 --- a/src/lib.rs +++ b/src/lib.rs @@ -1,4 +1,6 @@ +#![doc = include_str!(".crate-docs.md")] use std::fmt::Debug; +use std::sync::Arc; use easings::Linear; @@ -9,15 +11,17 @@ pub mod easings; pub struct EasingFunction(EasingKind); impl EasingFunction { + /// Returns a new easing function using `func`. pub fn from_fn(func: fn(f32) -> f32) -> Self { Self(EasingKind::Fn(func)) } + /// Returns a new easing function using `easing`. pub fn new(easing: Easing) -> Self where Easing: crate::Easing + Debug + Clone, { - Self(EasingKind::Custom(Box::new(easing))) + Self(EasingKind::Custom(Arc::new(easing))) } } @@ -33,12 +37,12 @@ impl Default for EasingFunction { } } -#[derive(Debug)] +#[derive(Debug, Clone)] enum EasingKind { /// A function pointer to use as an easing function. Fn(fn(f32) -> f32), /// A custom easing implementation. - Custom(Box), + Custom(Arc), } impl Easing for EasingKind { @@ -60,28 +64,6 @@ impl PartialEq for EasingKind { } } -impl Clone for EasingKind { - fn clone(&self) -> Self { - match self { - Self::Fn(func) => Self::Fn(*func), - Self::Custom(func) => Self::Custom(func.clone_boxed()), - } - } -} - -trait EasingClone: Debug + Easing { - fn clone_boxed(&self) -> Box; -} - -impl EasingClone for T -where - T: Debug + Clone + Easing, -{ - fn clone_boxed(&self) -> Box { - Box::new(self.clone()) - } -} - /// Performs easing for value interpolation. pub trait Easing: Debug + Send + Sync + 'static { /// Eases a value ranging between zero and one. The resulting value does not