fix

src/main.rs

@@ -6,7 +6,7 @@ use error_iter::ErrorIter;
 const EPSILON: f64 = 1e-8;
 const INFINITY: f64 = 1e10;
 
-use gui::{init_engine, Gui};
+use gui::{init_engine};
 use log::error;
 use nalgebra::Vector3;
 use rand::random;

src/node.rs

@@ -1,7 +1,7 @@
 use crate::{
     bvh::AABB,
     material::Material,
-    primitive::{self, *},
+    primitive::{*},
     ray::{Intersection, Ray},
 };
 use nalgebra::{Matrix4, Vector3};