fovea-derive

fovea-derive provides the procedural macros used by fovea to derive pixel layout and arithmetic traits.

Most users should depend on fovea and use the derive macros re-exported from that crate. Depend on fovea-derive directly only if you are working on the fovea internals or need the macro crate explicitly.

[dependencies]

fovea = "0.1.1"

Derives

Derive	Purpose
`PlainPixel`	Declares that a pixel has a stable byte layout suitable for byte-level access.
`HomogeneousPixel`	Declares that all channels have the same channel type.
`ZeroablePixel`	Generates a zero value for image allocation and initialization.
`LinearPixel`	Generates linear-space arithmetic support with an explicit accumulator type.

Example

use fovea::{HomogeneousPixel, PlainPixel, ZeroablePixel};
use std::num::Saturating;

#[derive(Clone, Copy, PlainPixel, HomogeneousPixel, ZeroablePixel)]
#[repr(C)]
pub struct Rgb8 {
    pub r: Saturating<u8>,
    pub g: Saturating<u8>,
    pub b: Saturating<u8>,
}

The derives intentionally enforce fovea's pixel model: memory layout is explicit, channel roles are named, and invalid trait implementations should fail during compilation rather than at runtime.

Part of the fovea project

Core crate: fovea
End-to-end demos: fovea-examples

License

Licensed under the MIT License.

fovea-derive 0.1.1

fovea-derive

Derives

Example

Part of the fovea project

License