src/rgb.rs

   1 use serde::{Deserialize, Serialize};
   2
   3 #[derive(Copy, Clone, Debug, Deserialize, Serialize, PartialEq)]
   4 pub struct RGB {
   5     pub red: u8,
   6     pub green: u8,
   7     pub blue: u8,
   8 }
   9
  10 // 'value' is between 0 and 1.
  11 pub fn linear_interpolation(color1: RGB, color2: RGB, value: f32) -> RGB {
  12     let red = (color1.red as f32 + (color2.red as f32 - color1.red as f32) * value) as u8;
  13     let green = (color1.green as f32 + (color2.green as f32 - color1.green as f32) * value) as u8;
  14     let blue = (color1.blue as f32 + (color2.blue as f32 - color1.blue as f32) * value) as u8;
  15
  16     RGB { red, green, blue }
  17 }