Add a second light.

src/open.js

@@ -4,7 +4,6 @@ const STAR_POINTS = 5;
 
 let scene, camera, renderer;
 let coreStarGroup;
-let lights = {};
 let animation = {
     steps: 0,
     x: new Float32Array(4),
@@ -154,11 +153,15 @@ function initLighting() {
     spotLight.shadow.mapSize.height = 1024; // default
     scene.add(spotLight);
 
+    let spotLight2 = new THREE.PointLight(0xffffff, 0.8);
+    spotLight2.position.set(-10, 0, 0);
+    spotLight2.castShadow = true;
+    spotLight2.shadow.mapSize.width = 1024;  // default
+    spotLight2.shadow.mapSize.height = 1024; // default
+    scene.add(spotLight2);
+
     let ambient = new THREE.AmbientLight(0x404040);
     scene.add(ambient);
-
-    lights.spotLight = spotLight;
-    lights.ambient = ambient;
 }
 
 /**