diff --git a/Cargo.toml b/Cargo.toml
index 65d03bf..61520a8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,5 +17,4 @@ redis = "0.23.0"
 ron = "0.8.0"
 serde = { version = "1.0.163", features = ["derive"] }
 toml = "0.7.4"
-homography = { git = "https://github.com/azazdeaz/homography" }
 nalgebra = "0.32.2"
diff --git a/src/transformer/homography.rs b/src/transformer/homography.rs
index 3fe1f95..8f1091f 100644
--- a/src/transformer/homography.rs
+++ b/src/transformer/homography.rs
@@ -2,8 +2,6 @@ use crate::transformer::Transformers;
 use crate::point::Point;
 use crate::worldstate::{WorldState,EDH};
 use serde::{Serialize,Deserialize};
-use log::debug;
-use nalgebra::Matrix1x3;
 
 /// Homography
 
@@ -15,15 +13,7 @@ impl Transformers for Homography {
 	let edh : &EDH = &ws.edh;
 
 	point_list.iter()
-	    .map(| point | {
-		let p = Matrix1x3::new(point.x, point.y, 1.0);
-		let p = p * edh.matrix;
-		let new_p = Point { x: p[0] / p[2], y: p[1] / p[2], ..*point };
-		
-		debug!("{:?} => {:?}", point, new_p);
-		
-		new_p
-	    })
+	    .map(| point | edh.apply(point))
 	    .collect()
     }
 }
diff --git a/src/worldstate.rs b/src/worldstate.rs
index 8377212..426dc1c 100644
--- a/src/worldstate.rs
+++ b/src/worldstate.rs
@@ -1,6 +1,7 @@
-use crate::point::Color;
-use nalgebra::base::Matrix3;
+use crate::point::{Point,Color};
+use nalgebra::base::{Matrix3,Matrix1x3};
 use crate::errors::{LJError,LJResult};
+use log::debug;
 
 #[derive(Debug, Default)]
 pub struct EDH {
@@ -31,6 +32,16 @@ impl EDH {
 
 	Ok(EDH { matrix })
     }
+
+    pub fn apply(&self, point: &Point) -> Point {
+	let p = Matrix1x3::new(point.x, point.y, 1.0);
+	let p = p * self.matrix;
+	let new_p = Point { x: p[0] / p[2], y: p[1] / p[2], ..*point };
+	
+	debug!("{:?} => {:?}", point, new_p);
+	
+	new_p
+    }
 }
 
 #[derive(Debug, Default)]