45 lines
1.1 KiB
Rust
45 lines
1.1 KiB
Rust
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use serde_derive::{Serialize, Deserialize};
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#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
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pub struct Colour {
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pub red: u8,
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pub green: u8,
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pub blue: u8,
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pub alpha: u8,
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}
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impl Colour {
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pub fn from(colours: Vec<u8>) -> Colour {
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const ZERO: u8 = 0;
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Colour {
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red: *colours.get(0).unwrap_or(&ZERO),
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green: *colours.get(1).unwrap_or(&ZERO),
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blue: *colours.get(2).unwrap_or(&ZERO),
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alpha: *colours.get(3).unwrap_or(&255),
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}
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}
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pub fn to_vec(&self) -> Vec<u8> {
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vec![self.red, self.green, self.blue, self.alpha]
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}
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}
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#[cfg(test)]
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mod test {
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use crate::Colour;
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#[test]
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fn test_colour_from_intermediate() {
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let output = Colour::from(vec![64, 128, 192, 255]);
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let expected = Colour { red: 64, green: 128, blue: 192, alpha: 255 };
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assert_eq!(output, expected);
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}
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#[test]
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fn test_colour_to_intermediate() {
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let output = Colour { red: 64, green: 128, blue: 192, alpha: 255 }.to_vec();
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let expected = vec![64, 128, 192, 255];
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assert_eq!(output, expected);
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}
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}
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