unnamed-rs/src/util.rs

use mint::Point2;

pub struct IsometricVector2(Point2<f32>);

impl IsometricVector2 {
    pub fn x(&self) -> f32 {
        self.0.x
    }

    pub fn y(&self) -> f32 {
        self.0.y
    }
}

impl From<Point2<f32>> for IsometricVector2 {
    fn from(cart: Point2<f32>) -> IsometricVector2 {
        let x = cart.x - cart.y;
        let y = (cart.x + cart.y) / 2.0;
        IsometricVector2(Point2 { x, y })
    }
}

impl Into<Point2<f32>> for IsometricVector2 {
    fn into(self) -> Point2<f32> {
        let x = (2.0 * self.y() + self.x()) / 2.0;
        let y = (2.0 * self.y() - self.x()) / 2.0;
        Point2 { x, y }
    }
}

impl<T> From<(T, T)> for IsometricVector2
where
    T: std::convert::Into<f32>,
{
    fn from(tuple: (T, T)) -> IsometricVector2 {
        IsometricVector2(Point2 {
            x: tuple.0.into(),
            y: tuple.1.into(),
        })
    }
}