mirror of
https://github.com/bend-n/fimg.git
synced 2024-12-22 02:28:19 -06:00
generic
This commit is contained in:
parent
997da104d2
commit
16fbab6ca2
|
@ -129,20 +129,16 @@ impl<T: AsMut<[u8]> + AsRef<[u8]>, U: AsRef<[u8]>> Overlay<Image<U, 4>> for Imag
|
|||
}
|
||||
}
|
||||
|
||||
impl BlendingOverlay<Image<&[u8], 4>> for Image<&mut [u8], 4> {
|
||||
impl<const A: usize, const B: usize, T: AsMut<[u8]> + AsRef<[u8]>, U: AsRef<[u8]>>
|
||||
BlendingOverlay<Image<U, B>> for Image<T, A>
|
||||
where
|
||||
[u8; A]: Blend<B>,
|
||||
{
|
||||
#[inline]
|
||||
unsafe fn overlay_blended(&mut self, with: &Image<&[u8], 4>) -> &mut Self {
|
||||
unsafe fn overlay_blended(&mut self, with: &Image<U, B>) -> &mut Self {
|
||||
debug_assert!(self.width() == with.width());
|
||||
debug_assert!(self.height() == with.height());
|
||||
for (i, other_pixels) in with.chunked().enumerate() {
|
||||
// SAFETY: caller assures us, all is well.
|
||||
let own_pixels = unsafe {
|
||||
&mut *(self
|
||||
.buffer
|
||||
.as_mut()
|
||||
.get_unchecked_mut(i * 4..i * 4 + 4)
|
||||
.as_mut_ptr() as *mut [u8; 4])
|
||||
};
|
||||
for (other_pixels, own_pixels) in with.chunked().zip(self.chunked_mut()) {
|
||||
own_pixels.blend(*other_pixels);
|
||||
}
|
||||
self
|
||||
|
@ -259,28 +255,6 @@ impl<T: AsMut<[u8]> + AsRef<[u8]>, U: AsRef<[u8]>> Overlay<Image<U, 4>> for Imag
|
|||
}
|
||||
}
|
||||
|
||||
impl<T: AsMut<[u8]> + AsRef<[u8]>, U: AsRef<[u8]>> BlendingOverlay<Image<U, 4>> for Image<T, 3> {
|
||||
#[inline]
|
||||
unsafe fn overlay_blended(&mut self, with: &Image<U, 4>) -> &mut Self {
|
||||
debug_assert!(self.width() == with.width());
|
||||
debug_assert!(self.height() == with.height());
|
||||
for (i, other_pixels) in with.chunked().enumerate() {
|
||||
// SAFETY: caller assures us, all is well.
|
||||
let [r, g, b] = unsafe {
|
||||
&mut *(self
|
||||
.buffer
|
||||
.as_mut()
|
||||
.get_unchecked_mut(i * 3..i * 3 + 3)
|
||||
.as_mut_ptr() as *mut [u8; 3])
|
||||
};
|
||||
let mut us = [*r, *g, *b, 255];
|
||||
us.blend(*other_pixels);
|
||||
(*r, *g, *b) = (us[0], us[1], us[2]);
|
||||
}
|
||||
self
|
||||
}
|
||||
}
|
||||
|
||||
impl ClonerOverlay<4, 3> for ImageCloner<'_, 3> {
|
||||
#[inline]
|
||||
#[must_use = "function does not modify the original image"]
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
//! module for pixel blending ops
|
||||
use super::{unfloat, Floatify, PMap, Trunc, Unfloatify};
|
||||
use super::{convert::PFrom, unfloat, Floatify, PMap, Trunc, Unfloatify};
|
||||
use umath::FF32;
|
||||
|
||||
/// Trait for blending pixels together.
|
||||
|
@ -41,6 +41,14 @@ impl Blend<3> for [u8; 3] {
|
|||
}
|
||||
}
|
||||
|
||||
impl Blend<4> for [u8; 3] {
|
||||
fn blend(&mut self, with: [u8; 4]) {
|
||||
let mut us: [u8; 4] = PFrom::pfrom(*self);
|
||||
us.blend(with);
|
||||
*self = PFrom::pfrom(us);
|
||||
}
|
||||
}
|
||||
|
||||
impl Blend<2> for [u8; 2] {
|
||||
fn blend(&mut self, with: [u8; 2]) {
|
||||
let bg = self.float();
|
||||
|
|
Loading…
Reference in a new issue