diff --git a/rtiow/src/ray.rs b/rtiow/src/ray.rs
index 4fc60d1..f250646 100644
--- a/rtiow/src/ray.rs
+++ b/rtiow/src/ray.rs
@@ -10,7 +10,12 @@ pub struct Ray {
 }
 
 impl Ray {
-    pub fn new(origin: Vec3, direction: Vec3, time: f32) -> Ray {
+    pub fn new<V>(origin: V, direction: V, time: f32) -> Ray
+    where
+        V: Into<Vec3>,
+    {
+        let direction = direction.into();
+        let origin = origin.into();
         let inv = 1. / direction;
         Ray {
             origin,