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use std::ops::{Add, Div, Mul, Sub};
use lum::Lum;
use rgb::Rgb;
macro_rules! impl_color_scalar_ops {
{ $(impl $op_trait:ident::$op_fn:ident for $color:ident($($field:ident),+);)* } => { $(
impl<T> $op_trait<T> for $color<T>
where T: Copy + $op_trait<Output = T>
{
type Output = $color<T>;
fn $op_fn (self, rhs: T) -> $color<T> {
$color { $($field: self.$field.$op_fn(rhs)),* }
}
}
)* };
}
macro_rules! impl_color_color_ops {
{ $(impl $op_trait:ident::$op_fn:ident for $color:ident($($field:ident),+);)* } => { $(
impl<T> $op_trait for $color<T>
where T: $op_trait<Output = T>
{
type Output = $color<T>;
fn $op_fn (self, rhs: $color<T>) -> $color<T> {
$color { $($field: self.$field.$op_fn(rhs.$field)),* }
}
}
)* };
}
impl_color_scalar_ops! {
impl Mul::mul for Lum(l);
impl Div::div for Lum(l);
impl Mul::mul for Rgb(r, g, b);
impl Div::div for Rgb(r, g, b);
}
impl_color_color_ops! {
impl Add::add for Lum(l);
impl Sub::sub for Lum(l);
impl Mul::mul for Lum(l);
impl Div::div for Lum(l);
impl Add::add for Rgb(r, g, b);
impl Sub::sub for Rgb(r, g, b);
impl Mul::mul for Rgb(r, g, b);
impl Div::div for Rgb(r, g, b);
}