First commit

app/three/simple-example.js

@@ -0,0 +1,30 @@
+import * as THREE from "three";
+
+export function initSimple(container) {
+  const scene = new THREE.Scene();
+  const camera = new THREE.PerspectiveCamera(
+    75,
+    window.innerWidth / window.innerHeight,
+    0.1,
+    1000
+  );
+
+  const renderer = new THREE.WebGLRenderer();
+  renderer.setSize(window.innerWidth, window.innerHeight);
+  renderer.setAnimationLoop(animate);
+  container.appendChild(renderer.domElement);
+
+  const geometry = new THREE.BoxGeometry(1, 1, 1);
+  const material = new THREE.MeshBasicMaterial({ color: 0x00ff00 });
+  const cube = new THREE.Mesh(geometry, material);
+  scene.add(cube);
+
+  camera.position.z = 5;
+
+  function animate() {
+    cube.rotation.x += 0.01;
+    cube.rotation.y += 0.01;
+
+    renderer.render(scene, camera);
+  }
+}