wip: normal material

src/objects/materials/normal.rs

@@ -0,0 +1,17 @@
+use serde::Deserialize;
+
+use crate::{
+    objects::{hit::Hit, materials::traits::Material},
+    ray::Ray,
+    vec3::Vec3,
+};
+
+#[derive(Debug, Deserialize)]
+pub struct Normal {}
+
+impl Material for Normal {
+    fn scatter(&self, hit: &Hit, ray: &Ray) -> Option<(Ray, Vec3)> {
+        let refl = ray.dir().reflect(hit.n()).get_unit();
+        Some((Ray::new(*hit.p(), refl), (hit.n() + 1.) / 2.))
+    }
+}