From bd458d49226015401d0c08eab52827e78d2848e3 Mon Sep 17 00:00:00 2001
From: STP <adam.a.french@outlook.com>
Date: Fri, 10 Nov 2023 23:49:41 -0500
Subject: [PATCH] Added copy and clone

---
 src/vec4.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/vec4.rs b/src/vec4.rs
index 78b3247..0ae45e7 100644
--- a/src/vec4.rs
+++ b/src/vec4.rs
@@ -5,6 +5,7 @@ use std::ops;
 // Vector: x,y,z,0
 // Position: x,y,z,1
 
+#[derive(Copy, Clone)]
 pub struct Vec4 {
     x: [f32; 4],
 }
@@ -31,6 +32,17 @@ impl Vec4 {
             + self.x[2] * other.x[2]
             + self.x[3] * other.x[3]
     }
+    //Cross product
+    pub fn cross(&self, other: &Vec4) -> Vec4 {
+        Vec4 {
+            x: [
+                self.x[1] * other.x[2] - self.x[2] * other.x[1],
+                self.x[2] * other.x[0] - self.x[0] * other.x[2],
+                self.x[0] * other.x[1] - self.x[1] * other.x[0],
+                0.0,
+            ],
+        }
+    }
     //Normalise the vector
     pub fn normalise(&mut self) {
         let magnitude = self.dot(self).sqrt();