From 5e61a588a59008705846326956ff0b1f8ee43b16 Mon Sep 17 00:00:00 2001
From: Rosyid Haryadi <rosyid_haryadi@protonmail.com>
Date: Sat, 1 Mar 2025 18:41:07 +0700
Subject: fix normal

---
 src/calculus.rs | 2 +-
 src/object.rs   | 4 ++--
 src/renderer.rs | 6 +++---
 3 files changed, 6 insertions(+), 6 deletions(-)

(limited to 'src')

diff --git a/src/calculus.rs b/src/calculus.rs
index 67138d1..c9b0574 100644
--- a/src/calculus.rs
+++ b/src/calculus.rs
@@ -1,5 +1,5 @@
 pub mod calculus {
-    #[derive(Copy, Clone)]
+    #[derive(Copy, Clone, Debug)]
     pub struct Vec3 {
         pub x: f32,
         pub y: f32,
diff --git a/src/object.rs b/src/object.rs
index ff965f0..0da9148 100644
--- a/src/object.rs
+++ b/src/object.rs
@@ -37,7 +37,7 @@ pub struct Sphere {
 
 impl Sphere {
     pub fn new(center: Vec3, radius: f32) -> Self {
-        let r = f32::max(0.0, radius);
+        let radius = f32::max(0.0, radius);
         Self { center, radius }
     }
 }
@@ -65,7 +65,7 @@ impl Hittable for Sphere {
 
         rec.t = root;
         rec.position = r.at(rec.t);
-        let outward_normal = rec.normal
+        let outward_normal = rec.position
             .sub(&self.center)
             .scalar_mul(1.0  / self.radius);
         rec.set_face_normal(r, outward_normal);
diff --git a/src/renderer.rs b/src/renderer.rs
index 2fb76d2..4936d9e 100644
--- a/src/renderer.rs
+++ b/src/renderer.rs
@@ -43,9 +43,9 @@ pub fn render(display_buffer: &mut DisplayBuffer) {
         Sphere::new(Point3::new(0.0, 0.0, -1.0), 0.5)
     );
 
-    // world.push(
-    //     Sphere::new(Point3::new(0.0, -100.5, -1.0), 100.0)
-    // );
+    world.push(
+        Sphere::new(Point3::new(0.0, -100.5, -1.0), 100.0)
+    );
 
 
     (0..IMG_HEIGHT).for_each(|j| {
-- 
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