diff --git a/js/scene.js b/js/scene.js
index daea1ff..d354c41 100644
--- a/js/scene.js
+++ b/js/scene.js
@@ -42,6 +42,7 @@ function init () {
     AppState.camera = ATON.Nav._camera;
     AppState.renderer = ATON._renderer;
     AppState.shadows = config.scene.shadows;
+    AppState.lightDirection = ATON.getMainLightDirection();
 
     ATON.Nav.setUserControl(true);
 }
diff --git a/js/state.js b/js/state.js
index 7300779..05980bc 100644
--- a/js/state.js
+++ b/js/state.js
@@ -20,7 +20,7 @@ let AppState = {
     // {id: String, active: Boolean}
     nodes: [],
     /**
-     * @property {NormalizedSceneNode[]} normalizedNodes
+     * @type {NormalizedSceneNode[]} normalizedNodes
      */
     normalizedNodes: [],
     mainNodeId: null,
@@ -28,6 +28,7 @@ let AppState = {
     sceneHasAudio: false,
     layersMenuBuilt: false,
     initialRotation: null,
+    lightDirection: [],
     camera: null,
     renderer: null,
     ambientOcclusion : true,
diff --git a/js/utils/environment.js b/js/utils/environment.js
index 4adfb20..f4f1a8a 100644
--- a/js/utils/environment.js
+++ b/js/utils/environment.js
@@ -1,5 +1,7 @@
 // Global ATON and THREE
 
+import AppState from "../state.js";
+
 /**
  * @module Environment
  */
@@ -28,16 +30,21 @@ export function toggleAmbientOcclusion(isEnabled) {
  * @param {Number} step - The slider's step
  */
 export function createLightSlider(direction, label, range, step) {
-    const currentVal = ATON.getMainLightDirection()[direction];
+    const currentVal = AppState.lightDirection[direction];
+
+    console.debug(currentVal);
+
     const lightSlider = ATON.UI.createSlider({
         range,
         label,
-        value: Number.parseFloat(currentVal).toPrecision(1),
+        value: Number.parseFloat(currentVal).toPrecision(2),
         oninput: val => {
-            const lightDir = ATON.getMainLightDirection();
+            const lightDir = AppState.lightDirection;
+
             // Keep existing direction values for the other axes
             lightDir[direction] = Number.parseFloat(val);
             changeLightDirection(lightDir);
+            AppState.lightDirection = lightDir;
         },
     });