#[derive(Copy, Clone)]
#[repr(packed)]
pub struct Color {
pub data: u32,
}
impl Color {
pub const fn rgb(r: u8, g: u8, b: u8) -> Self {
Color { data: 0xFF000000 | ((r as u32) << 16) | ((g as u32) << 8) | (b as u32) }
}
pub const fn rgba(r: u8, g: u8, b: u8, a: u8) -> Self {
Color { data: ((a as u32) << 24) | ((r as u32) << 16) | ((g as u32) << 8) | (b as u32) }
}
pub fn r(&self) -> u8 {
((self.data & 0x00FF0000) >> 16) as u8
}
pub fn g(&self) -> u8 {
((self.data & 0x0000FF00) >> 8) as u8
}
pub fn b(&self) -> u8 {
(self.data & 0x000000FF) as u8
}
pub fn a(&self) -> u8 {
((self.data & 0xFF000000) >> 24) as u8
}
pub fn interpolate(start_color: Color, end_color: Color, scale: f64) -> Color {
let r = Color::interp(start_color.r(), end_color.r(), scale);
let g = Color::interp(start_color.g(), end_color.g(), scale);
let b = Color::interp(start_color.b(), end_color.b(), scale);
let a = Color::interp(start_color.a(), end_color.a(), scale);
Color::rgba(r, g, b, a)
}
fn interp(start_color: u8, end_color: u8, scale: f64) -> u8 {
((end_color as f64 - start_color as f64) * scale + start_color as f64) as u8
}
}