Trait palette::GetHue
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[src]
pub trait GetHue { type Hue; fn get_hue(&self) -> Option<Self::Hue>; }
A trait for colors where a hue may be calculated.
use palette::{Rgb, GetHue}; let red = Rgb::new(1.0f32, 0.0, 0.0); let green = Rgb::new(0.0f32, 1.0, 0.0); let blue = Rgb::new(0.0f32, 0.0, 1.0); let gray = Rgb::new(0.5f32, 0.5, 0.5); assert_eq!(red.get_hue(), Some(0.0.into())); assert_eq!(green.get_hue(), Some(120.0.into())); assert_eq!(blue.get_hue(), Some(240.0.into())); assert_eq!(gray.get_hue(), None);
Associated Types
type Hue
The kind of hue unit this color space uses.
The hue is most commonly calculated as an angle around a color circle and may not always be uniform between color spaces. It's therefore not recommended to take one type of hue and apply it to a color space that expects an other.
Required Methods
fn get_hue(&self) -> Option<Self::Hue>
Calculate a hue if possible.
Colors in the gray scale has no well defined hue and should preferably
return None
.