use crate::layout::{Vec2, vec2};

#[derive(Clone, Copy, Debug)]
pub enum Corner {
    TopLeft,
    TopRight,
    BotLeft,
    BotRight,
}

impl Corner {
    pub const fn anchor(&self) -> Vec2 {
        match self {
            Corner::TopLeft => vec2(0.0, 0.0),
            Corner::TopRight => vec2(1.0, 0.0),
            Corner::BotLeft => vec2(0.0, 1.0),
            Corner::BotRight => vec2(1.0, 1.0),
        }
    }
}

#[derive(Copy, Clone, Eq, PartialEq)]
pub enum Axis {
    X,
    Y,
}

#[derive(Clone, Copy, Eq, PartialEq)]
pub struct Dir {
    pub axis: Axis,
    pub sign: Sign,
}

impl Dir {
    pub const fn new(axis: Axis, dir: Sign) -> Self {
        Self { axis, sign: dir }
    }

    pub const LEFT: Self = Self::new(Axis::X, Sign::Neg);
    pub const RIGHT: Self = Self::new(Axis::X, Sign::Pos);
    pub const UP: Self = Self::new(Axis::Y, Sign::Neg);
    pub const DOWN: Self = Self::new(Axis::Y, Sign::Pos);
}

#[derive(Clone, Copy, Eq, PartialEq)]
pub enum Sign {
    Neg,
    Pos,
}