Struct Ray

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

A ray defined by an origin and a direction.

Fields

orig: Point3

Ray origin.

dir: Vec3

Ray direction.

Implementations

impl Ray

pub fn new(origin: Point3, direction: Vec3) -> Self

Creates a new ray from origin and direction.

pub fn origin(&self) -> Point3

Returns the ray origin.

pub fn direction(&self) -> Vec3

Returns the ray direction.

pub fn at(&self, t: f64) -> Point3

Returns the point at parameter t along the ray: P(t) = orig + t dir.