Update place.html

eb7f5b91 · Riegel · 20e88c68 · eb7f5b91
Commit eb7f5b91 authored Jun 17, 2023 by Riegel
--- a/place.html
+++ b/place.html
@@ -6,8 +6,12 @@
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <title>Cube Demo</title>

-  <!-- three.js -->
-  <script src="https://unpkg.com/three@0.126.0/build/three.js"></script>
+<!-- three.js -->
+<script src="https://unpkg.com/three@0.126.0/build/three.js"></script>
+
+<script src="https://unpkg.com/three@0.126.0/examples/js/loaders/GLTFLoader.js"></script>
+
+
 </head>
 <body>

@@ -21,22 +25,12 @@ async function activateXR() {
  document.body.appendChild(canvas);
  const gl = canvas.getContext("webgl", {xrCompatible: true});

-  const scene = new THREE.Scene();
+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})
-];
+const directionalLight = new THREE.DirectionalLight(0xffffff, 0.3);
+directionalLight.position.set(10, 15, 10);
+scene.add(directionalLight);

-// 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({
@@ -54,17 +48,43 @@ 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)
-});
+const session = await navigator.xr.requestSession("immersive-ar", {requiredFeatures: ['hit-test']});

 // 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 another XRReferenceSpace that has the viewer as the origin.
+const viewerSpace = await session.requestReferenceSpace('viewer');
+// Perform hit testing using the viewer as origin.
+const hitTestSource = await session.requestHitTestSource({ space: viewerSpace });
+
+
+const loader = new THREE.GLTFLoader();
+let reticle;
+loader.load("https://immersive-web.github.io/webxr-samples/media/gltf/reticle/reticle.gltf", function(gltf) {
+  reticle = gltf.scene;
+  reticle.visible = false;
+  scene.add(reticle);
+})
+
+let flower;
+loader.load("https://immersive-web.github.io/webxr-samples/media/gltf/sunflower/sunflower.gltf", function(gltf) {
+  flower = gltf.scene;
+});
+
+session.addEventListener("select", (event) => {
+  if (flower) {
+    const clone = flower.clone();
+    clone.position.copy(reticle.position);
+    scene.add(clone);
+  }
+});
+
+
 // 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);

@@ -86,6 +106,15 @@ const onXRFrame = (time, frame) => {
    camera.projectionMatrix.fromArray(view.projectionMatrix);
    camera.updateMatrixWorld(true);

+    const hitTestResults = frame.getHitTestResults(hitTestSource);
+    if (hitTestResults.length > 0 && reticle) {
+      const hitPose = hitTestResults[0].getPose(referenceSpace);
+      reticle.visible = true;
+      reticle.position.set(hitPose.transform.position.x, hitPose.transform.position.y, hitPose.transform.position.z)
+      reticle.updateMatrixWorld(true);
+    }
+
+
    // Render the scene with THREE.WebGLRenderer.
    renderer.render(scene, camera)
  }