From be17b57431f4cd0315ab55878ffba63acdabd7e0 Mon Sep 17 00:00:00 2001
From: Kandia <32kake1mpg@hft-stuttgart.de>
Date: Mon, 27 May 2024 20:41:46 +0000
Subject: [PATCH] Upload New File
---
simplear.html | 120 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 120 insertions(+)
create mode 100644 simplear.html
diff --git a/simplear.html b/simplear.html
new file mode 100644
index 0000000..25db1cb
--- /dev/null
+++ b/simplear.html
@@ -0,0 +1,120 @@
+<!doctype html>
+<html>
+<head>
+ <meta charset="UTF-8">
+ <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
+ <title>Simple AR</title>
+
+ <!-- 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>
+
+<button onclick="activateXR()">Start Hit to Place Demo</button>
+<script>
+async function activateXR() {
+ const canvas = document.createElement("canvas");
+ document.body.appendChild(canvas);
+ const gl = canvas.getContext("webgl", {xrCompatible: true});
+
+ const scene = new THREE.Scene();
+ const directionalLight = new THREE.DirectionalLight(0xffffff, 1.0);
+ directionalLight.position.set(10, 15, 10);
+ scene.add(directionalLight);
+
+ const renderer = new THREE.WebGLRenderer({ alpha: true, preserveDrawingBuffer: true, canvas: canvas, context: gl });
+ renderer.autoClear = false;
+
+ const camera = new THREE.PerspectiveCamera();
+ camera.matrixAutoUpdate = false;
+
+ const session = await navigator.xr.requestSession("immersive-ar", { requiredFeatures: ['hit-test'] });
+ session.updateRenderState({ baseLayer: new XRWebGLLayer(session, gl) });
+
+ const referenceSpace = await session.requestReferenceSpace('local');
+ const viewerSpace = await session.requestReferenceSpace('viewer');
+ 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;
+ });
+
+ let selectedObject = null;
+ let initialHitTestSource = null;
+
+ session.addEventListener("selectstart", (event) => {
+ if (reticle.visible) {
+ const hitTestResults = event.frame.getHitTestResults(hitTestSource);
+ if (hitTestResults.length > 0) {
+ const hitPose = hitTestResults[0].getPose(referenceSpace);
+ selectedObject = flower.clone();
+ selectedObject.position.set(hitPose.transform.position.x, hitPose.transform.position.y, hitPose.transform.position.z);
+ scene.add(selectedObject);
+ initialHitTestSource = hitTestSource;
+ }
+ } else {
+ const raycaster = new THREE.Raycaster();
+ const mouse = new THREE.Vector2();
+ raycaster.setFromCamera(mouse, camera);
+
+ const intersects = raycaster.intersectObjects(scene.children, true);
+ if (intersects.length > 0) {
+ selectedObject = intersects[0].object;
+ initialHitTestSource = hitTestSource;
+ }
+ }
+ });
+
+ session.addEventListener("selectend", () => {
+ selectedObject = null;
+ });
+
+ const onXRFrame = (time, frame) => {
+ session.requestAnimationFrame(onXRFrame);
+ gl.bindFramebuffer(gl.FRAMEBUFFER, session.renderState.baseLayer.framebuffer);
+
+ const pose = frame.getViewerPose(referenceSpace);
+ if (pose) {
+ const view = pose.views[0];
+ const viewport = session.renderState.baseLayer.getViewport(view);
+ renderer.setSize(viewport.width, viewport.height);
+
+ camera.matrix.fromArray(view.transform.matrix);
+ 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);
+ }
+
+ if (selectedObject && initialHitTestSource) {
+ const hitTestResults = frame.getHitTestResults(initialHitTestSource);
+ if (hitTestResults.length > 0) {
+ const hitPose = hitTestResults[0].getPose(referenceSpace);
+ selectedObject.position.set(hitPose.transform.position.x, hitPose.transform.position.y, hitPose.transform.position.z);
+ selectedObject.updateMatrixWorld(true);
+ }
+ }
+
+ renderer.render(scene, camera);
+ }
+ };
+ session.requestAnimationFrame(onXRFrame);
+}
+</script>
+</body>
+</html>
--
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