//
// …
//
// Georg Hopp <georg@steffers.org>
//
// Copyright © 2019 Georg Hopp
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//

use std::fmt::{Debug, Display, Formatter, Result};
use std::ops::{Add, Div, Sub};

use super::canvas::{Vertex, Vertices};
use super::drawable::Drawable;

#[derive(Debug, Clone, Copy)]
pub struct Line<T>(pub Vertex<T>, pub Vertex<T>);

impl<T> Drawable<T> for Line<T>
where T: Add<Output = T> + Sub<Output = T> + Div<Output = T>
       + Debug + Clone + Copy + From<i32> {
    fn plot(&self) -> Vertices<T> {
        let Line(a, b) = *self;
        a.line(b)
    }
}

impl<T> Display for Line<T> {
    fn fmt(&self, f: &mut Formatter<'_>) -> Result {
        let Line(a, b) = self;
        write!(f, "Line[{},{}]", a, b)
    }
}