servicepoint/servicepoint-binding-c
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add BrightnessGrid::saturating_load

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This commit is contained in:
Vinzenz Schroeter 2024-11-12 19:33:54 +01:00
parent d0598446e6
commit 7bc59f6df8
1 changed files with 14 additions and 1 deletions
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15
crates/servicepoint/src/brightness.rs
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@ -37,6 +37,13 @@ pub struct Brightness(u8);
/// ```
pub type BrightnessGrid = PrimitiveGrid<Brightness>;
impl BrightnessGrid {
/// Like [Self::load], but ignoring any out-of-range brightness values
pub fn saturating_load(width: usize, height: usize, data: &[u8]) -> Self {
PrimitiveGrid::load(width, height, data).map(Brightness::saturating_from)
}
}
impl From<Brightness> for u8 {
fn from(brightness: Brightness) -> Self {
brightness.0
@ -105,7 +112,7 @@ impl TryFrom<PrimitiveGrid<u8>> for BrightnessGrid {
let brightnesses = value
.iter()
.map(|b| Brightness::try_from(*b))
.collect::<Result<Vec<Brightness>, _>>()?;
.collect::<Result<Vec<_>, _>>()?;
Ok(BrightnessGrid::load(
value.width(),
value.height(),
@ -155,4 +162,10 @@ mod tests {
assert_eq!(Brightness::MAX, Brightness::saturating_from(100));
assert_eq!(Brightness(5), Brightness::saturating_from(5));
}
#[test]
fn saturating_load() {
assert_eq!(BrightnessGrid::load(2,2, &[Brightness::MAX, Brightness::MAX, Brightness::MIN, Brightness::MAX]),
BrightnessGrid::saturating_load(2,2, &[255u8, 23, 0, 42]));
}
}