Update public/webXR/three.html

public/webXR/three.html

@@ -16,81 +16,53 @@
 <button onclick="activateXR()">Start Cube Demo</button>
 <script>
 async function activateXR() {
-  // Add a canvas element and initialize a WebGL context that is compatible with WebXR.
-  const canvas = document.createElement("canvas");
-  document.body.appendChild(canvas);
-  const gl = canvas.getContext("webgl", {xrCompatible: true});
-
-  const scene = new THREE.Scene();
-
-// The cube will have a different color on each side.
-const materials = [
-  new THREE.MeshBasicMaterial({color: 0xff0000}),
-  new THREE.MeshBasicMaterial({color: 0x0000ff}),
-  new THREE.MeshBasicMaterial({color: 0x00ff00}),
-  new THREE.MeshBasicMaterial({color: 0xff00ff}),
-  new THREE.MeshBasicMaterial({color: 0x00ffff}),
-  new THREE.MeshBasicMaterial({color: 0xffff00})
-];
-
-// Create the cube and add it to the demo scene.
-const cube = new THREE.Mesh(new THREE.BoxBufferGeometry(0.5, 0.5, 0.5), materials);
-cube.position.set(0, 0, -1);
-scene.add(cube);
-
-// Set up the WebGLRenderer, which handles rendering to the session's base layer.
-const renderer = new THREE.WebGLRenderer({
-  alpha: true,
-  preserveDrawingBuffer: true,
-  canvas: canvas,
-  context: gl
-});
-renderer.autoClear = false;
-
-// The API directly updates the camera matrices.
-// Disable matrix auto updates so three.js doesn't attempt
-// to handle the matrices independently.
-const camera = new THREE.PerspectiveCamera();
-camera.matrixAutoUpdate = false;
-
-// Initialize a WebXR session using "immersive-ar".
-const session = await navigator.xr.requestSession("immersive-ar");
-session.updateRenderState({
-  baseLayer: new XRWebGLLayer(session, gl)
-});
-
-// A 'local' reference space has a native origin that is located
-// near the viewer's position at the time the session was created.
-const referenceSpace = await session.requestReferenceSpace('local');
-
-// Create a render loop that allows us to draw on the AR view.
-const onXRFrame = (time, frame) => {
-  // Queue up the next draw request.
-  session.requestAnimationFrame(onXRFrame);
-
-  // Bind the graphics framebuffer to the baseLayer's framebuffer
-  gl.bindFramebuffer(gl.FRAMEBUFFER, session.renderState.baseLayer.framebuffer)
-
-  // Retrieve the pose of the device.
-  // XRFrame.getViewerPose can return null while the session attempts to establish tracking.
-  const pose = frame.getViewerPose(referenceSpace);
-  if (pose) {
-    // In mobile AR, we only have one view.
-    const view = pose.views[0];
-
-    const viewport = session.renderState.baseLayer.getViewport(view);
-    renderer.setSize(viewport.width, viewport.height)
-
-    // Use the view's transform matrix and projection matrix to configure the THREE.camera.
-    camera.matrix.fromArray(view.transform.matrix)
-    camera.projectionMatrix.fromArray(view.projectionMatrix);
-    camera.updateMatrixWorld(true);
-
-    // Render the scene with THREE.WebGLRenderer.
-    renderer.render(scene, camera)
-  }
-}
-session.requestAnimationFrame(onXRFrame);
+  // ------------------------------------------------
+// BASIC SETUP
+// ------------------------------------------------
+
+// Create an empty scene
+var scene = new THREE.Scene();
+
+// Create a basic perspective camera
+var camera = new THREE.PerspectiveCamera( 75, window.innerWidth/window.innerHeight, 0.1, 1000 );
+camera.position.z = 4;
+
+// Create a renderer with Antialiasing
+var renderer = new THREE.WebGLRenderer({antialias:true});
+
+// Configure renderer clear color
+renderer.setClearColor("#000000");
+
+// Configure renderer size
+renderer.setSize( window.innerWidth, window.innerHeight );
+
+// Append Renderer to DOM
+document.body.appendChild( renderer.domElement );
+
+// ------------------------------------------------
+// FUN STARTS HERE
+// ------------------------------------------------
+
+// Create a Cube Mesh with basic material
+var geometry = new THREE.BoxGeometry( 1, 1, 1 );
+var material = new THREE.MeshBasicMaterial( { color: "#433F81" } );
+var cube = new THREE.Mesh( geometry, material );
+
+// Add cube to Scene
+scene.add( cube );
+
+// Render Loop
+var render = function () {
+  requestAnimationFrame( render );
+
+  cube.rotation.x += 0.01;
+  cube.rotation.y += 0.01;
+
+  // Render the scene
+  renderer.render(scene, camera);
+};
+
+render();
 
 }
 </script>