use super::Point3;
use super::Vec3;

pub struct Ray {
    pub orig: Point3,
    pub dir: Vec3
}

impl Ray {
    pub fn new(o: Point3, d: Vec3) -> Ray {
        Ray { orig: o, dir: d }
    }

    pub fn origin(&self) -> Point3 {
        self.orig
    }

    pub fn direction(&self) -> Vec3 {
        self.dir
    }

    pub fn at(&self, t: f64) -> Point3 {
        self.orig + t*self.dir
    }
}