wip: normal material

src/objects/quad.rs

@@ -4,7 +4,7 @@ use crate::objects::traits::Hittable;
 use crate::objects::triangle::Triangle;
 use crate::ray::Ray;
 use crate::{objects::materials::traits::Material, vec3::Vec3};
-use log::info;
+use log::{info, warn};
 use std::fmt::Debug;
 use std::sync::Arc;
 
@@ -19,6 +19,7 @@ pub struct Quad {
 
 impl Quad {
     pub fn new(p1: Vec3, p2: Vec3, p3: Vec3, p4: Vec3, material: Arc<dyn Material>) -> Self {
+        warn!("quad normal {}", (p2 - p1).cross(&(p4 - p1)).get_unit());
         Self {
             p1,
             p2,