src/ray.rs


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use cgmath::Vector3;

pub struct Ray {
    pub orig: Vector3<f64>,
    pub dir: Vector3<f64>,
    pub time: f64,
}

impl Ray {
    pub fn new(orig: Vector3<f64>, dir: Vector3<f64>, time: f64) -> Ray {
        Ray { orig, dir, time }
    }

    pub fn at(&self, t: f64) -> Vector3<f64> {
        self.orig + t * self.dir
    }
}

pub struct NextRay {
    pub attenuation: Vector3<f64>,
    pub ray: Ray,
}

impl NextRay {
    pub fn new(attenuation: Vector3<f64>, ray: Ray) -> NextRay {
        NextRay { attenuation, ray }
    }
}