fast image operations
add cloneroverlayat<3, 3>
| -rw-r--r-- | src/overlay.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/overlay.rs b/src/overlay.rs index 8eca5d5..dbb7a0a 100644 --- a/src/overlay.rs +++ b/src/overlay.rs @@ -231,6 +231,24 @@ impl<T: AsMut<[u8]> + AsRef<[u8]>, U: AsRef<[u8]>> OverlayAt<Image<U, 3>> for Im } } +impl ClonerOverlayAt<3, 3> for ImageCloner<'_, 3> { + /// Overlay a RGB image(with) => self at coordinates x, y. + /// As this is a `RGBxRGB` operation, blending is unnecessary, + /// and this is simply a copy. + /// + /// # Safety + /// + /// UB if x, y is out of bounds + #[inline] + #[must_use = "function does not modify the original image"] + unsafe fn overlay_at(&self, with: &Image<&[u8], 3>, x: u32, y: u32) -> Image<Vec<u8>, 3> { + let mut out = self.dup(); + // SAFETY: same + unsafe { out.as_mut().overlay_at(with, x, y) }; + out + } +} + impl<T: AsMut<[u8]> + AsRef<[u8]>, U: AsRef<[u8]>> Overlay<Image<U, 4>> for Image<T, 3> { #[inline] unsafe fn overlay(&mut self, with: &Image<U, 4>) -> &mut Self { |