diff --git a/src/main.rs b/src/main.rs
index 44eb102..fc6ae5c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -20,7 +20,7 @@ use vanrijn::materials::LambertianMaterial;
 use vanrijn::math::Vec3;
 use vanrijn::mesh::load_obj;
 use vanrijn::partial_render_scene;
-use vanrijn::raycasting::{Aggregate, BoundingVolumeHierarchy, Plane, Primitive, Sphere};
+use vanrijn::raycasting::{BoundingVolumeHierarchy, Plane, Primitive, Sphere};
 use vanrijn::scene::Scene;
 use vanrijn::util::TileIterator;
 
@@ -131,7 +131,7 @@ pub fn main() -> Result<(), Box<dyn std::error::Error>> {
         }),
     )?;
     println!("Building BVH...");
-    let model_bvh: Box<dyn Aggregate> =
+    let model_bvh: Box<dyn Primitive> =
         Box::new(BoundingVolumeHierarchy::build(model_object.as_mut_slice()));
     println!("Constructing Scene...");
 
@@ -183,7 +183,7 @@ pub fn main() -> Result<(), Box<dyn std::error::Error>> {
                         //specular_strength: 1.0,
                     }),
                 )),
-            ]) as Box<dyn Aggregate>,
+            ]) as Box<dyn Primitive>,
             model_bvh,
         ],
     };
diff --git a/src/raycasting/bounding_volume_hierarchy.rs b/src/raycasting/bounding_volume_hierarchy.rs
index c3adf06..104706c 100644
--- a/src/raycasting/bounding_volume_hierarchy.rs
+++ b/src/raycasting/bounding_volume_hierarchy.rs
@@ -1,8 +1,6 @@
-use crate::math::Vec3;
+use crate::math::{Affine3, Vec3};
 
-use super::{
-    Aggregate, BoundingBox, HasBoundingBox, Intersect, IntersectP, IntersectionInfo, Primitive, Ray,
-};
+use super::{BoundingBox, HasBoundingBox, Intersect, IntersectP, IntersectionInfo, Primitive, Ray};
 
 use std::cmp::Ordering;
 use std::sync::Arc;
@@ -125,7 +123,11 @@ impl HasBoundingBox for BoundingVolumeHierarchy {
     }
 }
 
-impl Aggregate for BoundingVolumeHierarchy {}
+impl Primitive for BoundingVolumeHierarchy {
+    fn transform(&self, transformation: &Affine3<f64>) -> Box<dyn Primitive> {
+        todo!()
+    }
+}
 
 #[cfg(test)]
 mod test {}
diff --git a/src/raycasting/mod.rs b/src/raycasting/mod.rs
index f9b0961..453a805 100644
--- a/src/raycasting/mod.rs
+++ b/src/raycasting/mod.rs
@@ -1,4 +1,4 @@
-use crate::math::Vec3;
+use crate::math::{Affine3,Vec3};
 
 use super::materials::Material;
 
@@ -121,23 +121,12 @@ pub trait HasBoundingBox: Send + Sync {
     fn bounding_box(&self) -> BoundingBox;
 }
 
-/// Any geometric object which can have an affine transformation applied to it
-///
-/// Used for moving, rotating or scaling primitives
-/*pub trait Transform {
-    /// Create a new object by applying the transformation to this object.
-    fn transform(&self, transformation: &Affine3<f64>) -> Self;
-}*/
-
 /// A basic geometric primitive such as a sphere or a triangle
 pub trait Primitive: Intersect + HasBoundingBox {
     // / Create a new object by applying the transformation to this object.
-    //fn transform(&self, transformation: &Affine3) -> dyn Primitive;
+    fn transform(&self, transformation: &Affine3<f64>) -> Box<dyn Primitive>;
 }
 
-/// Either a primitive or a collection of primitives
-pub trait Aggregate: Intersect + HasBoundingBox {}
-
 #[cfg(test)]
 mod tests {
     use quickcheck_macros::quickcheck;
diff --git a/src/raycasting/plane.rs b/src/raycasting/plane.rs
index 2fb5712..02ff3c1 100644
--- a/src/raycasting/plane.rs
+++ b/src/raycasting/plane.rs
@@ -106,7 +106,11 @@ impl HasBoundingBox for Plane {
     }
 }
 
-impl Primitive for Plane {}
+impl Primitive for Plane {
+    fn transform(&self, transformation: &crate::math::Affine3<f64>) -> Box<dyn Primitive> {
+        todo!()
+    }
+}
 
 #[cfg(test)]
 mod tests {
diff --git a/src/raycasting/sphere.rs b/src/raycasting/sphere.rs
index d3ba4f4..e77e7b8 100644
--- a/src/raycasting/sphere.rs
+++ b/src/raycasting/sphere.rs
@@ -99,7 +99,11 @@ impl HasBoundingBox for Sphere {
     }
 }
 
-impl Primitive for Sphere {}
+impl Primitive for Sphere {
+    fn transform(&self, transformation: &crate::math::Affine3<f64>) -> Box<dyn Primitive> {
+        todo!()
+    }
+}
 
 #[cfg(test)]
 mod tests {
diff --git a/src/raycasting/triangle.rs b/src/raycasting/triangle.rs
index 77404c1..9b6e515 100644
--- a/src/raycasting/triangle.rs
+++ b/src/raycasting/triangle.rs
@@ -103,7 +103,11 @@ impl HasBoundingBox for Triangle {
     }
 }
 
-impl Primitive for Triangle {}
+impl Primitive for Triangle {
+    fn transform(&self, transformation: &crate::math::Affine3<f64>) -> Box<dyn Primitive> {
+        todo!()
+    }
+}
 
 fn indices_with_index_of_largest_element_last(v: &Vec3<f64>) -> [usize; 3] {
     #[allow(clippy::collapsible_else_if)]
diff --git a/src/raycasting/vec_aggregate.rs b/src/raycasting/vec_aggregate.rs
index 27786f4..dacb896 100644
--- a/src/raycasting/vec_aggregate.rs
+++ b/src/raycasting/vec_aggregate.rs
@@ -1,4 +1,5 @@
-use super::{Aggregate, BoundingBox, HasBoundingBox, Intersect, IntersectionInfo, Primitive, Ray};
+use super::{BoundingBox, HasBoundingBox, Intersect, IntersectionInfo, Primitive, Ray};
+use crate::math::Affine3;
 
 impl HasBoundingBox for Vec<Box<dyn Primitive>> {
     fn bounding_box(&self) -> BoundingBox {
@@ -21,27 +22,8 @@ impl Intersect for Vec<Box<dyn Primitive>> {
     }
 }
 
-impl Aggregate for Vec<Box<dyn Primitive>> {}
-
-impl HasBoundingBox for Vec<Box<dyn Aggregate>> {
-    fn bounding_box(&self) -> BoundingBox {
-        self.iter().fold(BoundingBox::empty(), |acc, elem| {
-            acc.union(&elem.bounding_box())
-        })
+impl Primitive for Vec<Box<dyn Primitive>> {
+    fn transform(&self, transformation: &Affine3<f64>) -> Box<dyn Primitive> {
+        todo!()
     }
 }
-
-impl Intersect for Vec<Box<dyn Aggregate>> {
-    fn intersect(&self, ray: &Ray) -> Option<IntersectionInfo> {
-        self.iter()
-            .flat_map(|aggregate| aggregate.intersect(ray))
-            .min_by(
-                |a, b| match PartialOrd::partial_cmp(&a.distance, &b.distance) {
-                    None => std::cmp::Ordering::Less,
-                    Some(ordering) => ordering,
-                },
-            )
-    }
-}
-
-impl Aggregate for Vec<Box<dyn Aggregate>> {}
diff --git a/src/scene.rs b/src/scene.rs
index 1d4add7..33dd44e 100644
--- a/src/scene.rs
+++ b/src/scene.rs
@@ -1,8 +1,8 @@
 use crate::math::Vec3;
 
-use crate::raycasting::Aggregate;
+use crate::raycasting::Primitive;
 
 pub struct Scene {
     pub camera_location: Vec3<f64>,
-    pub objects: Vec<Box<dyn Aggregate>>,
+    pub objects: Vec<Box<dyn Primitive>>,
 }