diff --git a/src/App.tsx b/src/App.tsx
index 42240a4..8680423 100755
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,88 +1,8 @@
-import Layout from "./three/Layout";
-import { ThreeProvider } from "./three";
-import useLayoutGeometry from "./three/useLayoutGeometry";
-import NavMesh from "./three/NavMesh";
-
-const wallConfig = {
-  wallThickness: 0.4,
-  width: 20,
-  length: 20,
-  wallHeight: 1,
-};
-
-const walls = [
-  [
-    [1, -9.75],
-    [1, 1.2],
-  ],
-  [
-    [-4.6, 1.2],
-    [1.02, 1.2],
-  ],
-  [
-    [-9.55, 1.2],
-    [-7.1, 1.2],
-  ],
-  [
-    [4, -9.75],
-    [4, -4],
-  ],
-  [
-    [4, -0.6],
-    [4, 0.75],
-  ],
-  [
-    [4, 0.55],
-    [8.34, 0.55],
-  ],
-  [
-    [-9.65, 8.5],
-    [-6.8, 8.5],
-  ],
-  [
-    [-3.75, 8.5],
-    [2.5, 8.5],
-  ],
-  [
-    [5.55, 8.5],
-    [8.34, 8.5],
-  ],
-  [
-    [-9.9, -9.75],
-    [1.2, -9.75],
-  ],
-  [
-    [3.8, -9.75],
-    [8.7, -9.75],
-  ],
-  [
-    [-9.7, -9.75],
-    [-9.7, 8.7],
-  ],
-  [
-    [8.5, -9.75],
-    [8.5, 8.7],
-  ],
-].map(
-  ([start, end]) =>
-    [
-      [start[0], 0, start[1]],
-      [end[0], wallConfig.wallHeight, end[1]],
-    ] as [number[], number[]]
-);
+import ThreeApp from "./ThreeApp";
+import { wallConfig, walls } from "./data";
 
 const App = () => {
-  const geometry = useLayoutGeometry({
-    ...wallConfig,
-    walls,
-  });
-
-  return (
-    <ThreeProvider>
-      <Layout geometry={geometry} {...wallConfig} />
-      <NavMesh geometry={geometry} wallThickness={wallConfig.wallThickness} />
-    </ThreeProvider>
-  );
+  return <ThreeApp wallConfig={wallConfig} walls={walls} />;
 };
 
 export default App;
diff --git a/src/ThreeApp.tsx b/src/ThreeApp.tsx
new file mode 100644
index 0000000..e6abcac
--- /dev/null
+++ b/src/ThreeApp.tsx
@@ -0,0 +1,20 @@
+import Layout from "./three/Layout";
+import { ThreeProvider } from "./three";
+import NavMesh from "./three/NavMesh";
+import { WallConfig, Walls } from "./data";
+
+interface ThreeAppProps {
+  wallConfig: WallConfig;
+  walls: Walls;
+}
+
+const ThreeApp = ({ wallConfig, walls }: ThreeAppProps) => {
+  return (
+    <ThreeProvider>
+      <Layout wallConfig={wallConfig} walls={walls} />
+      <NavMesh wallConfig={wallConfig} walls={walls} />
+    </ThreeProvider>
+  );
+};
+
+export default ThreeApp;
diff --git a/src/data.ts b/src/data.ts
new file mode 100644
index 0000000..ba7d254
--- /dev/null
+++ b/src/data.ts
@@ -0,0 +1,79 @@
+type Vector3Pair = [number[], number[]];
+
+export type Walls = Array<Vector3Pair>;
+export interface WallConfig {
+  width: number;
+  length: number;
+  wallThickness: number;
+  wallHeight: number;
+}
+
+const wallConfig: WallConfig = {
+  wallThickness: 0.4,
+  width: 20,
+  length: 20,
+  wallHeight: 1,
+};
+
+const walls: Walls = [
+  [
+    [1, -9.75],
+    [1, 1.2],
+  ],
+  [
+    [-4.6, 1.2],
+    [1.02, 1.2],
+  ],
+  [
+    [-9.55, 1.2],
+    [-7.1, 1.2],
+  ],
+  [
+    [4, -9.75],
+    [4, -4],
+  ],
+  [
+    [4, -0.6],
+    [4, 0.75],
+  ],
+  [
+    [4, 0.55],
+    [8.34, 0.55],
+  ],
+  [
+    [-9.65, 8.5],
+    [-6.8, 8.5],
+  ],
+  [
+    [-3.75, 8.5],
+    [2.5, 8.5],
+  ],
+  [
+    [5.55, 8.5],
+    [8.34, 8.5],
+  ],
+  [
+    [-9.9, -9.75],
+    [1.2, -9.75],
+  ],
+  [
+    [3.8, -9.75],
+    [8.7, -9.75],
+  ],
+  [
+    [-9.7, -9.75],
+    [-9.7, 8.7],
+  ],
+  [
+    [8.5, -9.75],
+    [8.5, 8.7],
+  ],
+].map(
+  ([start, end]) =>
+    [
+      [start[0], 0, start[1]],
+      [end[0], wallConfig.wallHeight, end[1]],
+    ] as [number[], number[]]
+);
+
+export { wallConfig, walls };
diff --git a/src/stories/App.stories.ts b/src/stories/App.stories.ts
index f16bf17..8a3992e 100755
--- a/src/stories/App.stories.ts
+++ b/src/stories/App.stories.ts
@@ -1,15 +1,19 @@
 import type { Meta, StoryObj } from "@storybook/react";
 
-import App from "../App";
+import ThreeApp from "../ThreeApp";
+import { wallConfig, walls } from "../data";
 
 const meta = {
-  title: "App",
-  component: App,
-} satisfies Meta<typeof App>;
+  title: "ThreeApp",
+  component: ThreeApp,
+} satisfies Meta<typeof ThreeApp>;
 
 export default meta;
 type Story = StoryObj<typeof meta>;
 
 export const Playground: Story = {
-  args: {},
+  args: {
+    wallConfig,
+    walls,
+  },
 };
diff --git a/src/three/Layout.ts b/src/three/Layout.ts
index 5376dd9..4b4bddb 100644
--- a/src/three/Layout.ts
+++ b/src/three/Layout.ts
@@ -2,12 +2,12 @@ import * as THREE from "three";
 import { useThree } from ".";
 import { useEffect } from "react";
 import useWebGLRenderTarget from "./useWebGLRenderTarget";
+import { WallConfig, Walls } from "../data";
+import useLayoutGeometry from "./useLayoutGeometry";
 
 interface LayoutProps {
-  geometry: THREE.BufferGeometry;
-  wallHeight: number;
-  width: number;
-  length: number;
+  wallConfig: WallConfig;
+  walls: Walls;
 }
 
 const vertexShader = `
@@ -57,19 +57,23 @@ class OutlineMaterial extends THREE.ShaderMaterial {
   }
 }
 
-const Layout = ({ geometry, width, length, wallHeight }: LayoutProps) => {
+const Layout = ({ wallConfig, walls }: LayoutProps) => {
   const { scene } = useThree();
   const topView = useWebGLRenderTarget();
+  const geometry = useLayoutGeometry({
+    ...wallConfig,
+    walls,
+  });
 
   useEffect(() => {
     if (!scene) return;
-
     const material = new OutlineMaterial(topView.texture);
     const mesh = new THREE.Mesh(geometry, material);
     mesh.frustumCulled = false;
     scene.add(mesh);
 
     requestAnimationFrame(() => {
+      const { width, length, wallHeight } = wallConfig;
       const topViewSene = new THREE.Scene();
       const topViewMaterial = new THREE.MeshBasicMaterial({ color: "white" });
       const topViewMesh = new THREE.Mesh(geometry, topViewMaterial);
@@ -91,7 +95,7 @@ const Layout = ({ geometry, width, length, wallHeight }: LayoutProps) => {
     return () => {
       scene.remove(mesh);
     };
-  }, [scene, geometry]);
+  }, [scene, geometry, wallConfig, walls]);
 
   return null;
 };
diff --git a/src/three/NavMesh.ts b/src/three/NavMesh.ts
index 4d93bf3..e5835ef 100644
--- a/src/three/NavMesh.ts
+++ b/src/three/NavMesh.ts
@@ -4,35 +4,50 @@ import { threeToSoloNavMesh, NavMeshHelper } from "recast-navigation/three";
 
 import { useThree } from ".";
 import { useEffect, useState } from "react";
+import useLayoutGeometry from "./useLayoutGeometry";
+import { WallConfig, Walls } from "../data";
 
 interface NavMeshProps {
-  geometry: THREE.BufferGeometry;
-  wallThickness: number;
+  wallConfig: WallConfig;
+  walls: Walls;
 }
 
-export const useNavMesh = ({ geometry, wallThickness }: NavMeshProps) => {
+export const useNavMesh = ({ wallConfig, walls }: NavMeshProps) => {
+  const [libReady, setLibReady] = useState(false);
   const [navMesh, setNavMesh] = useState<NavMesh | undefined>();
+  const geometry = useLayoutGeometry({
+    ...wallConfig,
+    walls,
+  });
+
+  useEffect(() => {
+    init().then(() => setLibReady(true));
+  }, []);
+
   useEffect(() => {
+    if (!libReady) return;
     if (!geometry) return;
 
-    init().then(() => {
-      const { navMesh } = threeToSoloNavMesh([new THREE.Mesh(geometry)], {
-        ch: 1e-2,
-        cs: wallThickness + 1e-2,
-        walkableHeight: 1,
-      });
-      if (navMesh) {
-        setNavMesh(navMesh);
-      }
+    const { wallThickness } = wallConfig;
+    const { navMesh } = threeToSoloNavMesh([new THREE.Mesh(geometry)], {
+      ch: 1e-2,
+      cs: wallThickness + 1e-2,
+      walkableHeight: 1,
     });
-  }, [geometry, wallThickness]);
+    if (navMesh) {
+      setNavMesh(navMesh);
+    }
+    return () => {
+      navMesh?.destroy();
+    };
+  }, [geometry, libReady, wallConfig, walls]);
 
   return navMesh;
 };
 
-const NavMeshRenderer = ({ geometry, wallThickness }: NavMeshProps) => {
+const NavMeshRenderer = ({ wallConfig, walls }: NavMeshProps) => {
   const { scene } = useThree();
-  const navMesh = useNavMesh({ geometry, wallThickness });
+  const navMesh = useNavMesh({ wallConfig, walls });
 
   useEffect(() => {
     if (!navMesh) return;