iris/core/src/num.rs

use crate::util::Vec2;
use std::marker::Destruct;

pub const trait UiNum {
    fn to_f32(self) -> f32;
}

const impl UiNum for f32 {
    fn to_f32(self) -> f32 {
        self
    }
}

const impl UiNum for u32 {
    fn to_f32(self) -> f32 {
        self as f32
    }
}

const impl UiNum for i32 {
    fn to_f32(self) -> f32 {
        self as f32
    }
}

pub const fn vec2(x: impl const UiNum, y: impl const UiNum) -> Vec2 {
    Vec2::new(x.to_f32(), y.to_f32())
}

const impl<T: const UiNum + Copy> From<T> for Vec2 {
    fn from(v: T) -> Self {
        Self {
            x: v.to_f32(),
            y: v.to_f32(),
        }
    }
}

const impl<T: const UiNum, U: const UiNum> From<(T, U)> for Vec2
where
    (T, U): const Destruct,
{
    fn from((x, y): (T, U)) -> Self {
        Self {
            x: x.to_f32(),
            y: y.to_f32(),
        }
    }
}