fast image operations
| -rw-r--r-- | Cargo.toml | 2 | ||||
| -rw-r--r-- | src/lib.rs | 27 |
2 files changed, 27 insertions, 2 deletions
@@ -1,6 +1,6 @@ [package] name = "fimg" -version = "0.3.0" +version = "0.3.1" authors = ["bend-n <[email protected]>"] license = "MIT" edition = "2021" @@ -3,9 +3,11 @@ //! Provides fast image operations, such as rotation, flipping, and overlaying. #![feature( slice_swap_unchecked, + generic_const_exprs, slice_as_chunks, unchecked_math, portable_simd, + const_option, array_chunks, test )] @@ -19,7 +21,7 @@ clippy::dbg_macro, missing_docs )] -#![allow(clippy::zero_prefixed_literal)] +#![allow(clippy::zero_prefixed_literal, incomplete_features)] use std::{num::NonZeroU32, slice::SliceIndex}; @@ -140,6 +142,29 @@ impl<const CHANNELS: usize> Image<&[u8], CHANNELS> { buffer: self.buffer, } } + + /// Create a new immutable image of width x, y. + /// + /// # Panics + /// + /// if width || height == 0 + /// + /// ``` + /// # use fimg::Image; + /// let img = Image::make::<5, 5>(); + /// # let img: Image<_, 4> = img; + /// ``` + + pub const fn make<'a, const WIDTH: u32, const HEIGHT: u32>() -> Image<&'a [u8], CHANNELS> + where + [(); CHANNELS * WIDTH as usize * HEIGHT as usize]: Sized, + { + Image { + width: NonZeroU32::new(WIDTH).expect("passed zero width to builder"), + height: NonZeroU32::new(HEIGHT).expect("passed zero height to builder"), + buffer: &[0; CHANNELS * WIDTH as usize * HEIGHT as usize], + } + } } impl<T: std::ops::Deref<Target = [u8]>, const CHANNELS: usize> Image<T, CHANNELS> { |