Trait tinyraytracer::blocks::RayCollision

pub trait RayCollision {
    fn ray_intersect(&self, ray: &Ray) -> HitPoint;
    fn collision_normal(&self, hit_point: Vec3) -> Vec3;
    fn collision_material(&self, hit_point: Vec3) -> Material;
}

We need to determine if a ray of light hits a specific object or not. This trait contains the logic of how to determine that.

Required methods

fn ray_intersect(&self, ray: &Ray) -> HitPoint

fn collision_normal(&self, hit_point: Vec3) -> Vec3

fn collision_material(&self, hit_point: Vec3) -> Material

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Implementors

impl RayCollision for Plane

fn ray_intersect(&self, ray: &Ray) -> HitPoint

fn collision_normal(&self, hit_point: Vec3) -> Vec3

fn collision_material(&self, hit_point: Vec3) -> Material

impl RayCollision for Rectangle2D

fn ray_intersect(&self, ray: &Ray) -> HitPoint

This is easy. We look for plane-ray intersection and check if it is withing the rectangle

fn collision_normal(&self, hit_point: Vec3) -> Vec3

fn collision_material(&self, hit_point: Vec3) -> Material

impl RayCollision for Sphere

In case of a sphere it’s pretty easy, we need to project the center of the sphere on the ray of light and see if the projection is inside the sphere

fn ray_intersect(&self, ray: &Ray) -> HitPoint

fn collision_normal(&self, hit_point: Vec3) -> Vec3

fn collision_material(&self, hit_point: Vec3) -> Material

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