# Objective
MSRV in the standalone crates should be accurate
## Solution
Determine the msrv of each crate and set it
## Testing
Adding better msrv checks to the CI is a next-step.
# Objective
Make the following functions `const` that will be useful to define
colors as constants.
- `Color::srgb_from_array`
- `Color::srgba_u8`
- `Color::srgb_u8`
The last two require Rust 1.82.0.
## Solution
- Make them `const`
- Change MSRV to 1.82.0
## Testing
I tested bevy_color only. My machine does not have enough RAM capacity
to test the whole bevy.
`cargo test -p bevy_color`
# Objective
On HEAD, `bevy_color` does not compile on its own with `--all-features`
enabled. This PR fixes that.
## Solution
- Added the `curve` feature on `bevy_math` to `bevy_color`.
- Added the `serialize` feature on `bevy_math` to
`bevy_color/serialize`.
## Testing
- Compiled with `cargo b -p bevy_color --all-features` on HEAD and on
this PR: it fails to compile on HEAD but compiles with this PR.
# Objective
Currently, sample-interpolated curves (such as those used by the glTF
loader for animations) do unnecessary extra work when `sample_clamped`
is called, since their implementations of `sample_unchecked` are already
clamped. Eliminating this redundant sampling is a small, easy
performance win which doesn't compromise on the animation system's
internal usage of `sample_clamped`, which guarantees that it never
samples curves out-of-bounds.
## Solution
For sample-interpolated curves, define `sample_clamped` in the way
`sample_unchecked` is currently defined, and then redirect
`sample_unchecked` to `sample_clamped`. This is arguably a more
idiomatic way of using the `cores` as well, which is nice.
## Testing
Ran `many_foxes` to make sure I didn't break anything.
# Objective
- Fixes#6370
- Closes#6581
## Solution
- Added the following lints to the workspace:
- `std_instead_of_core`
- `std_instead_of_alloc`
- `alloc_instead_of_core`
- Used `cargo +nightly fmt` with [item level use
formatting](https://rust-lang.github.io/rustfmt/?version=v1.6.0&search=#Item%5C%3A)
to split all `use` statements into single items.
- Used `cargo clippy --workspace --all-targets --all-features --fix
--allow-dirty` to _attempt_ to resolve the new linting issues, and
intervened where the lint was unable to resolve the issue automatically
(usually due to needing an `extern crate alloc;` statement in a crate
root).
- Manually removed certain uses of `std` where negative feature gating
prevented `--all-features` from finding the offending uses.
- Used `cargo +nightly fmt` with [crate level use
formatting](https://rust-lang.github.io/rustfmt/?version=v1.6.0&search=#Crate%5C%3A)
to re-merge all `use` statements matching Bevy's previous styling.
- Manually fixed cases where the `fmt` tool could not re-merge `use`
statements due to conditional compilation attributes.
## Testing
- Ran CI locally
## Migration Guide
The MSRV is now 1.81. Please update to this version or higher.
## Notes
- This is a _massive_ change to try and push through, which is why I've
outlined the semi-automatic steps I used to create this PR, in case this
fails and someone else tries again in the future.
- Making this change has no impact on user code, but does mean Bevy
contributors will be warned to use `core` and `alloc` instead of `std`
where possible.
- This lint is a critical first step towards investigating `no_std`
options for Bevy.
---------
Co-authored-by: François Mockers <francois.mockers@vleue.com>
# Objective
Updating ``glam`` to 0.29, ``encase`` to 0.10.
## Solution
Update the necessary ``Cargo.toml`` files.
## Testing
Ran ``cargo run -p ci`` on Windows; no issues came up.
---------
Co-authored-by: aecsocket <aecsocket@tutanota.com>
# Objective
- Fixes#15236
## Solution
- Use bevy_math::ops instead of std floating point operations.
## Testing
- Did you test these changes? If so, how?
Unit tests and `cargo run -p ci -- test`
- How can other people (reviewers) test your changes? Is there anything
specific they need to know?
Execute `cargo run -p ci -- test` on Windows.
- If relevant, what platforms did you test these changes on, and are
there any important ones you can't test?
Windows
## Migration Guide
- Not a breaking change
- Projects should use bevy math where applicable
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: IQuick 143 <IQuick143cz@gmail.com>
Co-authored-by: Joona Aalto <jondolf.dev@gmail.com>
# Objective
- Crate-level prelude modules, such as `bevy_ecs::prelude`, are plagued
with inconsistency! Let's fix it!
## Solution
Format all preludes based on the following rules:
1. All preludes should have brief documentation in the format of:
> The _name_ prelude.
>
> This includes the most common types in this crate, re-exported for
your convenience.
2. All documentation should be outer, not inner. (`///` instead of
`//!`.)
3. No prelude modules should be annotated with `#[doc(hidden)]`. (Items
within them may, though I'm not sure why this was done.)
## Testing
- I manually searched for the term `mod prelude` and updated all
occurrences by hand. 🫠
---------
Co-authored-by: Gino Valente <49806985+MrGVSV@users.noreply.github.com>
# Objective
- Currently we have the `ColorRange` trait to interpolate linearly
between two colors
- It would be cool to have:
1. linear interpolation between n colors where `n >= 1`
2. other kinds of interpolation
## Solution
1. Implement `ColorGradient` which takes `n >= 1` colors and linearly
interpolates between consecutive pairs of them
2. Implement `Curve` intergration for this `ColorGradient` which yields
a curve struct. After that we can apply all of the cool curve adaptors
like `.reparametrize()` and `.map()` to the gradient
## Testing
- Added doc tests
- Added tests
## Showcase
```rust
// let gradient = ColorGradient::new(vec![]).unwrap(); // panic! 💥
let gradient = ColorGradient::new([basic::RED, basic::LIME, basic::BLUE]).expect("non-empty");
let curve = gradient.to_curve();
let brighter_curve = curve.map(|c| c.mix(&basic::WHITE, 0.5));
```
---
Kind of related to
https://github.com/bevyengine/bevy/pull/14971#discussion_r1736337631
---------
Co-authored-by: Zachary Harrold <zac@harrold.com.au>
Co-authored-by: Matty <weatherleymatthew@gmail.com>
# Objective
Fixes#14782
## Solution
Enable the lint and fix all upcoming hints (`--fix`). Also tried to
figure out the false-positive (see review comment). Maybe split this PR
up into multiple parts where only the last one enables the lint, so some
can already be merged resulting in less many files touched / less
potential for merge conflicts?
Currently, there are some cases where it might be easier to read the
code with the qualifier, so perhaps remove the import of it and adapt
its cases? In the current stage it's just a plain adoption of the
suggestions in order to have a base to discuss.
## Testing
`cargo clippy` and `cargo run -p ci` are happy.
Upgrading to WGPU 22.
Needs `naga_oil` to upgrade first, I've got a fork that compiles but
fails tests, so until that's fixed and the crate is officially
updated/released this will be blocked.
---------
Co-authored-by: Elabajaba <Elabajaba@users.noreply.github.com>
Basically it's https://github.com/bevyengine/bevy/pull/13792 with the
bumped versions of `encase` and `hexasphere`.
---------
Co-authored-by: Robert Swain <robert.swain@gmail.com>
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- Fix issue #2611
## Solution
- Add `--generate-link-to-definition` to all the `rustdoc-args` arrays
in the `Cargo.toml`s (for docs.rs)
- Add `--generate-link-to-definition` to the `RUSTDOCFLAGS` environment
variable in the docs workflow (for dev-docs.bevyengine.org)
- Document all the workspace crates in the docs workflow (needed because
otherwise only the source code of the `bevy` package will be included,
making the argument useless)
- I think this also fixes#3662, since it fixes the bug on
dev-docs.bevyengine.org, while on docs.rs it has been fixed for a while
on their side.
---
## Changelog
- The source code viewer on docs.rs now includes links to the
definitions.
# Objective
Fix erroneous hue mixing in `Lcha` and `Oklcha`. Purple + Red == Green
is the current behavior.
## Solution
Use `crate::color_ops::lerp_hue` to handle the wrap-around at 360
degrees, the same way that `Hsla`, `Hsva`, and `Hwba` do it.
## Testing
Game jamming, but tested that the workaround below produces
correct-looking colors in my jam game.
# Problem
Division by zero in `crates/bevy_color/src/hsva.rs` when `blackness` is
`1`:
```rust
impl From<Hwba> for Hsva {
fn from(
Hwba {
hue,
whiteness,
blackness,
alpha,
}: Hwba,
) -> Self {
// Based on https://en.wikipedia.org/wiki/HWB_color_model#Conversion
let value = 1. - blackness;
let saturation = 1. - (whiteness / value);
Hsva::new(hue, saturation, value, alpha)
}
}
```
## Solution
With `Hsva` colors if the `value` component is set to `0.` the output
will be pure black regardless of the values of the `hue` or `saturation`
components.
So if `value` is `0`, we don't need to calculate a `saturation` value
and can just set it to `0`:
```rust
impl From<Hwba> for Hsva {
fn from(
Hwba {
hue,
whiteness,
blackness,
alpha,
}: Hwba,
) -> Self {
// Based on https://en.wikipedia.org/wiki/HWB_color_model#Conversion
let value = 1. - blackness;
let saturation = if value != 0. {
1. - (whiteness / value)
} else {
0.
};
Hsva::new(hue, saturation, value, alpha)
}
}
```
---------
Co-authored-by: Gino Valente <49806985+MrGVSV@users.noreply.github.com>
# Objective
- Bevy currently has lot of invalid intra-doc links, let's fix them!
- Also make CI test them, to avoid future regressions.
- Helps with #1983 (but doesn't fix it, as there could still be explicit
links to docs.rs that are broken)
## Solution
- Make `cargo r -p ci -- doc-check` check fail on warnings (could also
be changed to just some specific lints)
- Manually fix all the warnings (note that in some cases it was unclear
to me what the fix should have been, I'll try to highlight them in a
self-review)
Bump version after release
This PR has been auto-generated
Co-authored-by: Bevy Auto Releaser <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: François Mockers <mockersf@gmail.com>
# Objective
Allow the use of color definitions from Bevy in other contexts than pure
Bevy apps, e.g. outside ECS use.
In those cases it's nice to not have more dependencies than you need.
## Solution
Hide use of reflection behind a feature flag.
Defaults to on.
## Points to consider
1. This was straightforward _except_ for the
`crates/bevy_color/src/lib.rs` change where I removed `Reflect` as a
bound. That is awkward to have feature gated since features should be
additive. If the bound was added as part of the feature flag, the result
would be _more_ restrictive, and _disable_ impls which did not have the
impl. On the other hand having the reflect bound there unconditionally
would defeat the purpose of the PR. I opted to remove the bound since it
seems overly restrictive anyway.
2. It's possible to hide `encase` and `bytemuck` behind the new feature
flag too (or a separate one). I'm thinking if `bevy-support` is not
desired then it's unlikely that the user has need of those.
---------
Signed-off-by: Torstein Grindvik <torstein.grindvik@muybridge.com>
Co-authored-by: Torstein Grindvik <torstein.grindvik@muybridge.com>
Currently blocked on https://github.com/gfx-rs/wgpu/issues/5774
# Objective
Update to wgpu 0.20
## Solution
Update to wgpu 0.20 and naga_oil 0.14.
## Testing
Tested a few different examples on linux (vulkan, webgl2, webgpu) and
windows (dx12 + vulkan) and they worked.
---
## Changelog
- Updated to wgpu 0.20. Note that we don't currently support wgpu's new
pipeline overridable constants, as they don't work on web currently and
need some more changes to naga_oil (and are somewhat redundant with
naga_oil's shader defs). See wgpu's changelog for more
https://github.com/gfx-rs/wgpu/blob/trunk/CHANGELOG.md#v0200-2024-04-28
## Migration Guide
TODO
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: François Mockers <mockersf@gmail.com>
# Objective
One thing missing from the new Color implementation in 0.14 is the
ability to easily convert to a u8 representation of the rgb color.
(note this is a redo of PR https://github.com/bevyengine/bevy/pull/13739
as I needed to move the source branch
## Solution
I have added to_u8_array and to_u8_array_no_alpha to a new trait called
ColorToPacked to mirror the f32 conversions in ColorToComponents and
implemented the new trait for Srgba and LinearRgba.
To go with those I also added matching from_u8... functions and
converted a couple of cases that used ad-hoc implementations of that
conversion to use these.
After discussion on Discord of the experience of using the API I renamed
Color::linear to Color::to_linear, as without that it looks like a
constructor (like Color::rgb).
I also added to_srgba which is the other commonly converted to type of
color (for UI and 2D) to match to_linear.
Removed a redundant extra implementation of to_f32_array for LinearColor
as it is also supplied in ColorToComponents (I'm surprised that's
allowed?)
## Testing
Ran all tests and manually tested.
Added to_and_from_u8 to linear_rgba::tests
## Changelog
visible change is Color::linear becomes Color::to_linear.
---------
Co-authored-by: John Payne <20407779+johngpayne@users.noreply.github.com>
Added a Grey trait to allow colors to create a generic "grey" color.
This currently assumes the color spaces follow the same gradient, which
I'm pretty sure isn't true, but it should make a "grey-ish" color
relative to the provided intensity.
# Objective
- Implements #13206
## Solution
- A small `Grey` trait was added and implemented for the common color
kinds.
## Testing
- Currently untested, unit tests exposed the non-linear relation between
colors. I am debating adding an example to show this, as I have no idea
what color space represents what relation of grey, and I figure others
may be similarly confused.
## Changelog
- The `Grey` trait was added, and the corresponding `grey`
## BREAKING CHANGES
The const qualifier for LinearRGBA::gray was removed (the symbol still
exists via a trait, it's just not const anymore)
# Objective
- Fixes#13214
## Solution
Delegates to internal type when possible, otherwise uses
`ChosenColorSpace` as an intermediary. This _will_ double convert, but
this is considered an acceptable compromise since use of specific colour
types in performance critical colour operations is already encouraged.
`ChosenColorSpace` is `Oklcha` since it's perceptually uniform while
supporting all required operations, and in my opinion is the "best" for
this task. Using different spaces for different operations will make
documenting this double-conversion behaviour more challenging.
## Testing
Changes straightforward enough to not require testing beyond current CI
in my opinion.
---
## Changelog
- Implemented the following traits for `Color`:
- `Luminance`
- `Hue`
- `Mix`
- `EuclideanDistance`
- `ClampColor`
- Added documentation to `Color` explaining the behaviour of these
operations (possible conversion, etc.)
# Objective
As was pointed out in #13183, `bevy_mikktspace` is missing it's msrv
from it `Cargo.toml`. This promted me to check the msrv of every
`bevy_*` crate. Closes#13183.
## Solution
- Call `cargo check` with different rust versions on every bevy crate
until it doesn't complain.
- Write down the rust version `cargo check` started working.
## Testing
- Install `cargo-msrv`.
- Run `cargo msrv verify`.
- Rejoice.
---
## Changelog
Every published bevy crate now specifies a MSRV. If your rust toolchain
isn't at least version `1.77.0` You'll likely not be able to compile
most of bevy.
## Migration Guide
If your rust toolchain is bellow version`1.77.0, update.
# Objective
fixes#13224
adds conversions for Vec3 and Vec4 since these appear so often
## Solution
added Covert trait (couldn't think of good name) for [f32; 4], [f32, 3],
Vec4, and Vec3 along with the symmetric implementation
## Changelog
added conversions between arrays and vector to colors and vice versa
#migration
LinearRgba appears to have already had implicit conversions for [f32;4]
and Vec4
# Objective
- `README.md` is a common file that usually gives an overview of the
folder it is in.
- When on <https://crates.io>, `README.md` is rendered as the main
description.
- Many crates in this repository are lacking `README.md` files, which
makes it more difficult to understand their purpose.
<img width="1552" alt="image"
src="https://github.com/bevyengine/bevy/assets/59022059/78ebf91d-b0c4-4b18-9874-365d6310640f">
- There are also a few inconsistencies with `README.md` files that this
PR and its follow-ups intend to fix.
## Solution
- Create a `README.md` file for all crates that do not have one.
- This file only contains the title of the crate (underscores removed,
proper capitalization, acronyms expanded) and the <https://shields.io>
badges.
- Remove the `readme` field in `Cargo.toml` for `bevy` and
`bevy_reflect`.
- This field is redundant because [Cargo automatically detects
`README.md`
files](https://doc.rust-lang.org/cargo/reference/manifest.html#the-readme-field).
The field is only there if you name it something else, like `INFO.md`.
- Fix capitalization of `bevy_utils`'s `README.md`.
- It was originally `Readme.md`, which is inconsistent with the rest of
the project.
- I created two commits renaming it to `README.md`, because Git appears
to be case-insensitive.
- Expand acronyms in title of `bevy_ptr` and `bevy_utils`.
- In the commit where I created all the new `README.md` files, I
preferred using expanded acronyms in the titles. (E.g. "Bevy Developer
Tools" instead of "Bevy Dev Tools".)
- This commit changes the title of existing `README.md` files to follow
the same scheme.
- I do not feel strongly about this change, please comment if you
disagree and I can revert it.
- Add <https://shields.io> badges to `bevy_time` and `bevy_transform`,
which are the only crates currently lacking them.
---
## Changelog
- Added `README.md` files to all crates missing it.
# Objective
- Update glam version requirement to latest version.
## Solution
- Updated `glam` version requirement from 0.25 to 0.27.
- Updated `encase` and `encase_derive_impl` version requirement from 0.7
to 0.8.
- Updated `hexasphere` version requirement from 10.0 to 12.0.
- Breaking changes from glam changelog:
- [0.26.0] Minimum Supported Rust Version bumped to 1.68.2 for impl
From<bool> for {f32,f64} support.
- [0.27.0] Changed implementation of vector fract method to match the
Rust implementation instead of the GLSL implementation, that is self -
self.trunc() instead of self - self.floor().
---
## Migration Guide
- When using `glam` exports, keep in mind that `vector` `fract()` method
now matches Rust implementation (that is `self - self.trunc()` instead
of `self - self.floor()`). If you want to use the GLSL implementation
you should now use `fract_gl()`.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- `cargo check --workspace` appears to merge features and dependencies
together, so it does not catch some issues where dependencies are not
properly feature-gated.
- The issues **are** caught, though, by running `cd $crate && cargo
check`.
## Solution
- Manually check each crate for issues.
```shell
# Script used
for i in crates/bevy_* do
pushd $i
cargo check
popd
done
```
- `bevy_color` had an issue where it used `#[derive(Pod, Zeroable)]`
without using `bytemuck`'s `derive` feature.
- The `FpsOverlayPlugin` in `bevy_dev_tools` uses `bevy_ui`'s
`bevy_text` integration without properly enabling `bevy_text` as a
feature.
- `bevy_gizmos`'s `light` module was not properly feature-gated behind
`bevy_pbr`.
- ~~Lights appear to only be implemented in `bevy_pbr` and not
`bevy_sprite`, so I think this is the right call. Can I get a
confirmation by a gizmos person?~~ Confirmed :)
- `bevy_gltf` imported `SmallVec`, but only used it if `bevy_animation`
was enabled.
- There was another issue, but it was more challenging to solve than the
`smallvec` one. Run `cargo check -p bevy_gltf` and it will raise an
issue about `animation_roots`.
<details>
<summary><code>bevy_gltf</code> errors</summary>
```shell
error[E0425]: cannot find value `animation_roots` in this scope
--> crates/bevy_gltf/src/loader.rs:608:26
|
608 | &animation_roots,
| ^^^^^^^^^^^^^^^ not found in this scope
warning: variable does not need to be mutable
--> crates/bevy_gltf/src/loader.rs:1015:5
|
1015 | mut animation_context: Option<AnimationContext>,
| ----^^^^^^^^^^^^^^^^^
| |
| help: remove this `mut`
|
= note: `#[warn(unused_mut)]` on by default
For more information about this error, try `rustc --explain E0425`.
warning: `bevy_gltf` (lib) generated 1 warning
error: could not compile `bevy_gltf` (lib) due to 1 previous error; 1 warning emitted
```
</details>
---
## Changelog
- Fixed `bevy_color`, `bevy_dev_tools`, and `bevy_gizmos` so they can
now compile by themselves.
# Objective
Minimize the number of dependencies low in the tree.
## Solution
* Remove the dependency on rustc-hash in bevy_ecs (not used) and
bevy_macro_utils (only used in one spot).
* Deduplicate the dependency on `sha1_smol` with the existing blake3
dependency already being used for bevy_asset.
* Remove the unused `ron` dependency on `bevy_app`
* Make the `serde` dependency for `bevy_ecs` optional. It's only used
for serializing Entity.
* Change the `wgpu` dependency to `wgpu-types`, and make it optional for
`bevy_color`.
* Remove the unused `thread-local` dependency on `bevy_render`.
* Make multiple dependencies for `bevy_tasks` optional and enabled only
when running with the `multi-threaded` feature. Preferably they'd be
disabled all the time on wasm, but I couldn't find a clean way to do
this.
---
## Changelog
TODO
## Migration Guide
TODO
# Objective
- There are several redundant imports in the tests and examples that are
not caught by CI because additional flags need to be passed.
## Solution
- Run `cargo check --workspace --tests` and `cargo check --workspace
--examples`, then fix all warnings.
- Add `test-check` to CI, which will be run in the check-compiles job.
This should catch future warnings for tests. Examples are already
checked, but I'm not yet sure why they weren't caught.
## Discussion
- Should the `--tests` and `--examples` flags be added to CI, so this is
caught in the future?
- If so, #12818 will need to be merged first. It was also a warning
raised by checking the examples, but I chose to split off into a
separate PR.
---------
Co-authored-by: François Mockers <francois.mockers@vleue.com>
# Objective
Previously, the `Point` trait, which abstracts all of the operations of
a real vector space, was sitting in the submodule of `bevy_math` for
cubic splines. However, the trait has broader applications than merely
cubic splines, and we should use it when possible to avoid code
duplication when performing vector operations.
## Solution
`Point` has been moved into a new submodule in `bevy_math` named
`common_traits`. Furthermore, it has been renamed to `VectorSpace`,
which is more descriptive, and an additional trait `NormedVectorSpace`
has been introduced to expand the API to cover situations involving
geometry in addition to algebra. Additionally, `VectorSpace` itself now
requires a `ZERO` constant and `Neg`. It also supports a `lerp` function
as an automatic trait method.
Here is what that looks like:
```rust
/// A type that supports the mathematical operations of a real vector space, irrespective of dimension.
/// In particular, this means that the implementing type supports:
/// - Scalar multiplication and division on the right by elements of `f32`
/// - Negation
/// - Addition and subtraction
/// - Zero
///
/// Within the limitations of floating point arithmetic, all the following are required to hold:
/// - (Associativity of addition) For all `u, v, w: Self`, `(u + v) + w == u + (v + w)`.
/// - (Commutativity of addition) For all `u, v: Self`, `u + v == v + u`.
/// - (Additive identity) For all `v: Self`, `v + Self::ZERO == v`.
/// - (Additive inverse) For all `v: Self`, `v - v == v + (-v) == Self::ZERO`.
/// - (Compatibility of multiplication) For all `a, b: f32`, `v: Self`, `v * (a * b) == (v * a) * b`.
/// - (Multiplicative identity) For all `v: Self`, `v * 1.0 == v`.
/// - (Distributivity for vector addition) For all `a: f32`, `u, v: Self`, `(u + v) * a == u * a + v * a`.
/// - (Distributivity for scalar addition) For all `a, b: f32`, `v: Self`, `v * (a + b) == v * a + v * b`.
///
/// Note that, because implementing types use floating point arithmetic, they are not required to actually
/// implement `PartialEq` or `Eq`.
pub trait VectorSpace:
Mul<f32, Output = Self>
+ Div<f32, Output = Self>
+ Add<Self, Output = Self>
+ Sub<Self, Output = Self>
+ Neg
+ Default
+ Debug
+ Clone
+ Copy
{
/// The zero vector, which is the identity of addition for the vector space type.
const ZERO: Self;
/// Perform vector space linear interpolation between this element and another, based
/// on the parameter `t`. When `t` is `0`, `self` is recovered. When `t` is `1`, `rhs`
/// is recovered.
///
/// Note that the value of `t` is not clamped by this function, so interpolating outside
/// of the interval `[0,1]` is allowed.
#[inline]
fn lerp(&self, rhs: Self, t: f32) -> Self {
*self * (1. - t) + rhs * t
}
}
```
```rust
/// A type that supports the operations of a normed vector space; i.e. a norm operation in addition
/// to those of [`VectorSpace`]. Specifically, the implementor must guarantee that the following
/// relationships hold, within the limitations of floating point arithmetic:
/// - (Nonnegativity) For all `v: Self`, `v.norm() >= 0.0`.
/// - (Positive definiteness) For all `v: Self`, `v.norm() == 0.0` implies `v == Self::ZERO`.
/// - (Absolute homogeneity) For all `c: f32`, `v: Self`, `(v * c).norm() == v.norm() * c.abs()`.
/// - (Triangle inequality) For all `v, w: Self`, `(v + w).norm() <= v.norm() + w.norm()`.
///
/// Note that, because implementing types use floating point arithmetic, they are not required to actually
/// implement `PartialEq` or `Eq`.
pub trait NormedVectorSpace: VectorSpace {
/// The size of this element. The return value should always be nonnegative.
fn norm(self) -> f32;
/// The squared norm of this element. Computing this is often faster than computing
/// [`NormedVectorSpace::norm`].
#[inline]
fn norm_squared(self) -> f32 {
self.norm() * self.norm()
}
/// The distance between this element and another, as determined by the norm.
#[inline]
fn distance(self, rhs: Self) -> f32 {
(rhs - self).norm()
}
/// The squared distance between this element and another, as determined by the norm. Note that
/// this is often faster to compute in practice than [`NormedVectorSpace::distance`].
#[inline]
fn distance_squared(self, rhs: Self) -> f32 {
(rhs - self).norm_squared()
}
}
```
Furthermore, this PR also demonstrates the use of the
`NormedVectorSpace` combined API to implement `ShapeSample` for
`Triangle2d` and `Triangle3d` simultaneously. Such deduplication is one
of the drivers for developing these APIs.
---
## Changelog
- `Point` from `cubic_splines` becomes `VectorSpace`, exported as
`bevy::math::VectorSpace`.
- `VectorSpace` requires `Neg` and `VectorSpace::ZERO` in addition to
its existing prerequisites.
- Introduced public traits `bevy::math::NormedVectorSpace` for generic
geometry tasks involving vectors.
- Implemented `ShapeSample` for `Triangle2d` and `Triangle3d`.
## Migration Guide
Since `Point` no longer exists, any projects using it must switch to
`bevy::math::VectorSpace`. Additionally, third-party implementations of
this trait now require the `Neg` trait; the constant `VectorSpace::ZERO`
must be provided as well.
---
## Discussion
### Design considerations
Originally, the `NormedVectorSpace::norm` method was part of a separate
trait `Normed`. However, I think that was probably too broad and, more
importantly, the semantics of having it in `NormedVectorSpace` are much
clearer.
As it currently stands, the API exposed here is pretty minimal, and
there is definitely a lot more that we could do, but there are more
questions to answer along the way. As a silly example, we could
implement `NormedVectorSpace::length` as an alias for
`NormedVectorSpace::norm`, but this overlaps with methods in all of the
glam types, so we would want to make sure that the implementations are
effectively identical (for what it's worth, I think they are already).
### Future directions
One example of something that could belong in the `NormedVectorSpace`
API is normalization. Actually, such a thing previously existed on this
branch before I decided to shelve it because of concerns with namespace
collision. It looked like this:
```rust
/// This element, but normalized to norm 1 if possible. Returns an error when the reciprocal of
/// the element's norm is not finite.
#[inline]
#[must_use]
fn normalize(&self) -> Result<Self, NonNormalizableError> {
let reciprocal = 1.0 / self.norm();
if reciprocal.is_finite() {
Ok(*self * reciprocal)
} else {
Err(NonNormalizableError { reciprocal })
}
}
/// An error indicating that an element of a [`NormedVectorSpace`] was non-normalizable due to having
/// non-finite norm-reciprocal.
#[derive(Debug, Error)]
#[error("Element with norm reciprocal {reciprocal} cannot be normalized")]
pub struct NonNormalizableError {
reciprocal: f32
}
```
With this kind of thing in hand, it might be worth considering
eventually making the passage from vectors to directions fully generic
by employing a wrapper type. (Of course, for our concrete types, we
would leave the existing names in place as aliases.) That is, something
like:
```rust
pub struct NormOne<T>
where T: NormedVectorSpace { //... }
```
Utterly separately, the reason that I implemented `ShapeSample` for
`Triangle2d`/`Triangle3d` was to prototype uniform sampling of abstract
meshes, so that's also a future direction.
---------
Co-authored-by: Zachary Harrold <zac@harrold.com.au>
# Objective
Resolves#3824. `unsafe` code should be the exception, not the norm in
Rust. It's obviously needed for various use cases as it's interfacing
with platforms and essentially running the borrow checker at runtime in
the ECS, but the touted benefits of Bevy is that we are able to heavily
leverage Rust's safety, and we should be holding ourselves accountable
to that by minimizing our unsafe footprint.
## Solution
Deny `unsafe_code` workspace wide. Add explicit exceptions for the
following crates, and forbid it in almost all of the others.
* bevy_ecs - Obvious given how much unsafe is needed to achieve
performant results
* bevy_ptr - Works with raw pointers, even more low level than bevy_ecs.
* bevy_render - due to needing to integrate with wgpu
* bevy_window - due to needing to integrate with raw_window_handle
* bevy_utils - Several unsafe utilities used by bevy_ecs. Ideally moved
into bevy_ecs instead of made publicly usable.
* bevy_reflect - Required for the unsafe type casting it's doing.
* bevy_transform - for the parallel transform propagation
* bevy_gizmos - For the SystemParam impls it has.
* bevy_assets - To support reflection. Might not be required, not 100%
sure yet.
* bevy_mikktspace - due to being a conversion from a C library. Pending
safe rewrite.
* bevy_dynamic_plugin - Inherently unsafe due to the dynamic loading
nature.
Several uses of unsafe were rewritten, as they did not need to be using
them:
* bevy_text - a case of `Option::unchecked` could be rewritten as a
normal for loop and match instead of an iterator.
* bevy_color - the Pod/Zeroable implementations were replaceable with
bytemuck's derive macros.
# Objective
Currently the built docs only shows the logo and favicon for the top
level `bevy` crate. This makes views like
https://docs.rs/bevy_ecs/latest/bevy_ecs/ look potentially unrelated to
the project at first glance.
## Solution
Reproduce the docs attributes for every crate that Bevy publishes.
Ideally this would be done with some workspace level Cargo.toml control,
but AFAICT, such support does not exist.
# Objective
- Add serialize feature to bevy_color
- "Fixes #12527".
## Solution
- Added feature for serialization
---
## Changelog
- Serde serialization is now optional, with flag 'serialize'
## Migration Guide
- If user wants color data structures to be serializable, then
application needs to be build with flag 'serialize'
# Objective
- Implements maths and `Animatable` for `Srgba` as suggested
[here](https://github.com/bevyengine/bevy/issues/12617#issuecomment-2013494774).
## Solution
- Implements `Animatable` and maths for `Srgba` just like their
implemented for other colors.
---
## Changelog
- Updated the example to mention `Srgba`.
## Migration Guide
- The previously existing implementation of mul/div for `Srgba` did not
modify `alpha` but these operations do modify `alpha` now. Users need to
be aware of this change.
# Objective
Fixes#12200 .
## Solution
I added a Hue Trait with the rotate_hue method to enable hue rotation.
Additionally, I modified the implementation of animations in the
animated_material sample.
---
## Changelog
- Added a `Hue` trait to `bevy_color/src/color_ops.rs`.
- Added the `Hue` trait implementation to `Hsla`, `Hsva`, `Hwba`,
`Lcha`, and `Oklcha`.
- Updated animated_material sample.
## Migration Guide
Users of Oklcha need to change their usage to use the with_hue method
instead of the with_h method.
---------
Co-authored-by: Pablo Reinhardt <126117294+pablo-lua@users.noreply.github.com>
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- Fixes#12202
## Solution
- Implements `Animatable` for all color types implementing arithmetic
operations.
- the colors returned by `Animatable`s methods are already clamped.
- Adds a `color_animation.rs` example.
- Implements the `*Assign` operators for color types that already had
the corresponding operators. This is just a 'nice to have' and I am
happy to remove this if it's not wanted.
---
## Changelog
- `bevy_animation` now depends on `bevy_color`.
- `LinearRgba`, `Laba`, `Oklaba` and `Xyza` implement `Animatable`.
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Zachary Harrold <zac@harrold.com.au>
# Objective
Fixes#12224.
## Solution
- Expand `with_` methods for the `Oklch` to their full names.
- Expand `l` to `lightness` in `Oklaba` comments.
## Migration Guide
The following methods have been renamed for the `Oklch` color space:
- `with_l` -> `with_lightness`.
- `with_c` -> `with_chroma`.
- `with_h` -> `with_hue`.
# Objective
- Fixes#12202
## Solution
- This PR implements componentwise (including alpha) addition,
subtraction and scalar multiplication/division for some color types.
- The mentioned color types are `Laba`, `Oklaba`, `LinearRgba` and
`Xyza` as all of them are either physically or perceptually linear as
mentioned by @alice-i-cecile in the issue.
---
## Changelog
- Scalar mul/div for `LinearRgba` may modify alpha now.
## Migration Guide
- Users of scalar mul/div for `LinearRgba` need to be aware of the
change and maybe use the `.clamp()` methods or manually set the `alpha`
channel.
# Objective
Give Bevy a well-designed built-in color palette for users to use while
prototyping or authoring Bevy examples.
## Solution
Generate
([playground](https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=f7b3a3002fb7727db15c1197e0a1a373),
[gist](https://gist.github.com/rust-play/f7b3a3002fb7727db15c1197e0a1a373))
consts from [Tailwind](https://tailwindcss.com/docs/customizing-colors)
(mit license) json.
## Discussion
Are there other popular alternatives we should be looking at? Something
new and fancy involving a really long acronym like CIELUVLCh? I'm not a
tailwind user or color expert, but I really like the way it's broken up
into distinct but plentiful hue and lightness groups.
It beats needing some shades of red, scrolling through the [current
palette](https://docs.rs/bevy/latest/bevy/prelude/enum.Color.html),
choosing a few of `CRIMSON`, `MAROON`, `RED`, `TOMATO` at random and
calling it a day.
The best information I was able to dig up about the Tailwind palette is
from this thread:
https://twitter.com/steveschoger/status/1303795136703410180. Here are
some key excerpts:
> Tried to the "perceptually uniform" thing for Tailwind UI.
> Ultimately, it just resulted in a bunch of useless shades for colors
like yellow and green that are inherently brighter.
> With that said you're guaranteed to get a contrast ratio of 4.5:1 when
using any 700 shade (in some cases 600) on a 100 shade of the same hue.
> We just spent a lot of time looking at sites to figure out which
colors are popular and tried to fill all the gaps.
> Even the lime green is questionable but felt there needed to be
something in between the jump from yellow to green 😅
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- Resolves#12463
## Solution
- Added `ClampColor`
Due to consistency, `is_within_bounds` is a method of `ClampColor`, like
`is_fully_transparent` is a method of `Alpha`
---
## Changelog
### Added
- `ClampColor` trait
---------
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
# Objective
- Even if we have `Laba` and `Oklcha` colorspaces using lightness as the
L field name, `Oklaba` doesn't do the same
- The shorthand function for creating a new color should be named
`Oklaba::lab`, but is named `lch`
## Solution
- Rename field l in `Oklaba` to lightness
- Rename `Oklaba::lch` to `Oklaba::lab`
---
## Changelog
### Changed
- Changed name in l field in `Oklaba` to lightness
- Changed method name `Oklaba::lch` to `Oklaba::lab`
## Migration Guide
If you were creating a Oklaba instance directly, instead of using L, you
should use lightness
```rust
// Before
let oklaba = Oklaba { l: 1., ..Default::default() };
// Now
let oklaba = Oklaba { lightness: 1., ..Default::default() };
```
if you were using the function `Oklaba::lch`, now the method is named
`Oklaba::lab`
