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use crate::color::{self, Component, IntoLinSrgba, LinSrgba}; use crate::math::num_traits::Float; /// A **Srgba** type with the default Scalar. pub type DefaultSrgba = color::Srgba<color::DefaultScalar>; /// A **LinSrgba** type with the default Scalar. pub type DefaultLinSrgba = color::LinSrgba<color::DefaultScalar>; /// Nodes that support setting colors. pub trait SetColor<S>: Sized where S: Component, { /// Provide a mutable reference to the RGBA field which can be used for setting colors. fn rgba_mut(&mut self) -> &mut Option<LinSrgba<S>>; /// Specify a color. /// /// This method supports any color type that can be converted into RGBA. /// /// Colors that have no alpha channel will be given an opaque alpha channel value `1.0`. fn color<C>(mut self, color: C) -> Self where C: IntoLinSrgba<S>, { *self.rgba_mut() = Some(color.into_lin_srgba()); self } /// Specify the color via red, green and blue channels. fn rgb<T>(self, r: T, g: T, b: T) -> Self where T: Component, S: Float, { self.color(color::Srgb::new(r, g, b)) } /// Specify the color via red, green, blue and alpha channels. fn rgba<T>(self, r: T, g: T, b: T, a: T) -> Self where T: Component, S: Float, { self.color(color::Srgba::new(r, g, b, a)) } /// Specify the color via hue, saturation and luminance. /// /// If you're looking for HSV or HSB, use the `hsv` method instead. /// /// The given hue expects a value between `0.0` and `1.0` where `0.0` is 0 degress and `1.0` is /// 360 degrees (or 2 PI radians). /// /// See the [wikipedia entry](https://en.wikipedia.org/wiki/HSL_and_HSV) for more details on /// this color space. fn hsl(self, h: S, s: S, l: S) -> Self where S: Float + Into<color::RgbHue<S>>, { let hue = color::RgbHue::from_degrees(h * S::from(360.0).unwrap()); self.color(color::Hsl::new(hue, s, l)) } /// Specify the color via hue, saturation, luminance and an alpha channel. /// /// If you're looking for HSVA or HSBA, use the `hsva` method instead. /// /// The given hue expects a value between `0.0` and `1.0` where `0.0` is 0 degress and `1.0` is /// 360 degrees (or 2 PI radians). /// /// See the [wikipedia entry](https://en.wikipedia.org/wiki/HSL_and_HSV) for more details on /// this color space. fn hsla(self, h: S, s: S, l: S, a: S) -> Self where S: Float + Into<color::RgbHue<S>>, { let hue = color::RgbHue::from_degrees(h * S::from(360.0).unwrap()); self.color(color::Hsla::new(hue, s, l, a)) } /// Specify the color via hue, saturation and *value* (brightness). /// /// This is sometimes also known as "hsb". /// /// The given hue expects a value between `0.0` and `1.0` where `0.0` is 0 degress and `1.0` is /// 360 degrees (or 2 PI radians). /// /// See the [wikipedia entry](https://en.wikipedia.org/wiki/HSL_and_HSV) for more details on /// this color space. fn hsv(self, h: S, s: S, v: S) -> Self where S: Float, { let hue = color::RgbHue::from_degrees(h * S::from(360.0).unwrap()); self.color(color::Hsv::new(hue, s, v)) } /// Specify the color via hue, saturation, *value* (brightness) and an alpha channel. /// /// This is sometimes also known as "hsba". /// /// The given hue expects a value between `0.0` and `1.0` where `0.0` is 0 degress and `1.0` is /// 360 degrees (or 2 PI radians). /// /// See the [wikipedia entry](https://en.wikipedia.org/wiki/HSL_and_HSV) for more details on /// this color space. fn hsva(self, h: S, s: S, v: S, a: S) -> Self where S: Float, { let hue = color::RgbHue::from_degrees(h * S::from(360.0).unwrap()); self.color(color::Hsva::new(hue, s, v, a)) } } impl<S> SetColor<S> for Option<LinSrgba<S>> where S: Component, { fn rgba_mut(&mut self) -> &mut Option<LinSrgba<S>> { self } }