Merge branch 'main' of ssh://git.djairo.dev:2222/djairoh/raytracing

src/objects/sphere.rs

@@ -42,7 +42,9 @@ impl Hittable for Sphere {
         if d < 0. {
             None
         } else {
-            let t = (h - sqrt(d)) / a;
+            let tl = (h - sqrt(d)) / a;
+            let tr = (h + sqrt(d)) / a;
+            let t = if tl > 0.001 { tl } else { tr };
             let p = r.at(t);
             let out_n = (p - self.center) / self.radius;
             Some(Hit::new(

src/vec3.rs

@@ -102,7 +102,7 @@ impl Vec3 {
     }
 
     pub fn reflect(&self, n: &Self) -> Self {
-        *self - 2. * self.dot(n) * n
+        *self - 2. * (self.dot(n) * n)
     }
 
     pub fn refract(&self, n: &Self, etai_over_etat: f32) -> Self {