Fix typo in cross-product implementation

diff --git a/narcissus-maths/src/vec3.rs b/narcissus-maths/src/vec3.rs
index 5bb096b68f8d5f256e84a29f40ee6bf427d2badc..fb2b2820107ccb2d88e7a6f25755e0084c31e2f2 100644 (file)
--- a/narcissus-maths/src/vec3.rs
+++ b/narcissus-maths/src/vec3.rs
@@ -67,7 +67,7 @@ impl Vec3 {
     pub fn cross(a: Vec3, b: Vec3) -> Vec3 {
         [
             a.y * b.z - a.z * b.y,
-            a.x * b.z - a.z * b.x,
+            a.z * b.x - a.x * b.z,
             a.x * b.y - a.y * b.x,
         ]
         .into()