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#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Color {
pub r: f64,
pub g: f64,
pub b: f64,
}
impl Color {
pub fn rgb(r: f64, g: f64, b: f64) -> Self {
Self { r, g, b }
}
pub fn parse(c: &str) -> Option<Self> {
match c {
"red" => Some(Color::RED),
"green" => Some(Color::GREEN),
"blue" => Some(Color::BLUE),
"yellow" => Some(Color::YELLOW),
"cyan" => Some(Color::CYAN),
"magenta" => Some(Color::MAGENTA),
"black" => Some(Color::BLACK),
"white" => Some(Color::WHITE),
_ => {
if c.len() == 6 {
Some(Self::from_rgb888(
u8::from_str_radix(&c[0..2], 16).ok()?,
u8::from_str_radix(&c[2..4], 16).ok()?,
u8::from_str_radix(&c[4..6], 16).ok()?,
))
} else {
None
}
}
}
}
pub fn as_rgb888(&self) -> (u8, u8, u8) {
(
(self.r * 255.0) as u8,
(self.g * 255.0) as u8,
(self.b * 255.0) as u8,
)
}
pub fn from_rgb888(r: u8, g: u8, b: u8) -> Self {
Color {
r: r as f64 / 255.0,
g: g as f64 / 255.0,
b: b as f64 / 255.0,
}
}
pub const RED: Color = Color {
r: 1.0,
g: 0.0,
b: 0.0,
};
pub const GREEN: Color = Color {
r: 0.0,
g: 1.0,
b: 0.0,
};
pub const BLUE: Color = Color {
r: 0.0,
g: 0.0,
b: 1.0,
};
pub const YELLOW: Color = Color {
r: 1.0,
g: 1.0,
b: 0.0,
};
pub const CYAN: Color = Color {
r: 0.0,
g: 1.0,
b: 1.0,
};
pub const MAGENTA: Color = Color {
r: 1.0,
g: 0.0,
b: 1.0,
};
pub const BLACK: Color = Color {
r: 0.0,
g: 0.0,
b: 0.0,
};
pub const WHITE: Color = Color {
r: 1.0,
g: 1.0,
b: 1.0,
};
pub fn mix(a: Color, b: Color, x: f64) -> Color {
let y = 1.0 - x;
Color {
r: a.r * y + b.r * x,
g: a.g * y + b.g * x,
b: a.b * y + b.b * x,
}
}
}
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