diff options
Diffstat (limited to 'src/renderer.rs')
| -rw-r--r-- | src/renderer.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/renderer.rs b/src/renderer.rs index 7e46834..3f94437 100644 --- a/src/renderer.rs +++ b/src/renderer.rs @@ -16,7 +16,7 @@ fn hit_sphere(center: &Point3, radius: f32, ray: &Ray) -> bool { let oc = center.sub(&ray.origin); let a = ray.direction.dot_prod(&ray.direction); let b = -2.0 * ray.direction.dot_prod(&oc); - let mut c = oc.dot_prod(&oc) - radius * radius; + let c = oc.dot_prod(&oc) - radius * radius; let discriminant = b * b - 4.0 * a * c; discriminant >= 0.0 } |