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Commit 2b3bbc74 authored by Esguerra Montana's avatar Esguerra Montana
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Update index.html

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...@@ -8,104 +8,121 @@ ...@@ -8,104 +8,121 @@
<!-- three.js --> <!-- three.js -->
<script src="https://unpkg.com/three@0.126.0/build/three.js"></script> <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> <script src="https://unpkg.com/three@0.126.0/examples/js/loaders/GLTFLoader.js"></script>
</head> </head>
<body> <body>
<!-- Starting an immersive WebXR session requires user interaction.
We start this one with a simple button. -->
<button onclick="activateXR()">Start Hit to Place Demo</button> <button onclick="activateXR()">Start Hit to Place Demo</button>
<script> <script>
async function activateXR() { async function activateXR() {
try { // Add a canvas element and initialize a WebGL context that is compatible with WebXR.
const canvas = document.createElement("canvas"); const canvas = document.createElement("canvas");
document.body.appendChild(canvas); document.body.appendChild(canvas);
const gl = canvas.getContext("webgl", {xrCompatible: true}); const gl = canvas.getContext("webgl", {xrCompatible: true});
const scene = new THREE.Scene(); const scene = new THREE.Scene();
const directionalLight = new THREE.DirectionalLight(0xffffff, 1.0); const directionalLight = new THREE.DirectionalLight(0xffffff, 1.0);
directionalLight.position.set(10, 15, 10); directionalLight.position.set(10, 15, 10);
scene.add(directionalLight); scene.add(directionalLight);
const renderer = new THREE.WebGLRenderer({ // Set up the WebGLRenderer, which handles rendering to the session's base layer.
alpha: true, const renderer = new THREE.WebGLRenderer({
preserveDrawingBuffer: true, alpha: true,
canvas: canvas, preserveDrawingBuffer: true,
context: gl canvas: canvas,
}); context: gl
renderer.autoClear = false; });
renderer.autoClear = false;
const camera = new THREE.PerspectiveCamera();
camera.matrixAutoUpdate = false; // The API directly updates the camera matrices.
// Disable matrix auto updates so three.js doesn't attempt
const session = await navigator.xr.requestSession("immersive-ar", {requiredFeatures: ['hit-test']}); // to handle the matrices independently.
session.updateRenderState({ const camera = new THREE.PerspectiveCamera();
baseLayer: new XRWebGLLayer(session, gl) camera.matrixAutoUpdate = false;
});
// Initialize a WebXR session using "immersive-ar".
const referenceSpace = await session.requestReferenceSpace('local'); const session = await navigator.xr.requestSession("immersive-ar", {requiredFeatures: ['hit-test']});
const viewerSpace = await session.requestReferenceSpace('viewer'); session.updateRenderState({
const hitTestSource = await session.requestHitTestSource({ space: viewerSpace }); baseLayer: new XRWebGLLayer(session, gl)
});
const loader = new THREE.GLTFLoader();
let reticle; // A 'local' reference space has a native origin that is located
loader.load("https://transfer.hft-stuttgart.de/gitlab/32esla1mpg/webarTTP/-/blolb/master/media/reticle.gltf", function(gltf) { // near the viewer's position at the time the session was created.
reticle = gltf.scene; const referenceSpace = await session.requestReferenceSpace('local');
reticle.visible = false;
scene.add(reticle); // Create another XRReferenceSpace that has the viewer as the origin.
console.log("Reticle loaded successfully"); const viewerSpace = await session.requestReferenceSpace('viewer');
}, undefined, function(error) { // Perform hit testing using the viewer as origin.
console.error("Error loading reticle:", error); const hitTestSource = await session.requestHitTestSource({ space: viewerSpace });
});
let model;
loader.load("https://transfer.hft-stuttgart.de/gitlab/32esla1mpg/webarTTP/-/blob/master/gltf/sunflower.gltf", function(gltf) {
model = gltf.scene; const loader = new THREE.GLTFLoader();
console.log("Model loaded successfully"); let reticle;
}, undefined, function(error) { loader.load("https://transfer.hft-stuttgart.de/gitlab/32esla1mpg/webarTTP/-/blolb/master/media/reticle.gltf", function(gltf) {
console.error("Error loading model:", error); reticle = gltf.scene;
}); reticle.visible = false;
scene.add(reticle);
session.addEventListener("select", (event) => { })
if (model && reticle.visible) {
const clone = model.clone(); let flower;
clone.position.copy(reticle.position); loader.load("https://transfer.hft-stuttgart.de/gitlab/32esla1mpg/webarTTP/-/blob/master/gltf/sunflower.gltf", function(gltf) {
scene.add(clone); flower = gltf.scene;
console.log("Model placed in scene"); });
}
}); session.addEventListener("select", (event) => {
if (flower) {
const onXRFrame = (time, frame) => { const clone = flower.clone();
session.requestAnimationFrame(onXRFrame); clone.position.copy(reticle.position);
scene.add(clone);
gl.bindFramebuffer(gl.FRAMEBUFFER, session.renderState.baseLayer.framebuffer); }
});
const pose = frame.getViewerPose(referenceSpace);
if (pose) { // Create a render loop that allows us to draw on the AR view.
const view = pose.views[0]; const onXRFrame = (time, frame) => {
const viewport = session.renderState.baseLayer.getViewport(view); // Queue up the next draw request.
renderer.setSize(viewport.width, viewport.height); session.requestAnimationFrame(onXRFrame);
camera.matrix.fromArray(view.transform.matrix); // Bind the graphics framebuffer to the baseLayer's framebuffer
camera.projectionMatrix.fromArray(view.projectionMatrix); gl.bindFramebuffer(gl.FRAMEBUFFER, session.renderState.baseLayer.framebuffer)
camera.updateMatrixWorld(true);
// Retrieve the pose of the device.
const hitTestResults = frame.getHitTestResults(hitTestSource); // XRFrame.getViewerPose can return null while the session attempts to establish tracking.
if (hitTestResults.length > 0 && reticle) { const pose = frame.getViewerPose(referenceSpace);
const hitPose = hitTestResults[0].getPose(referenceSpace); if (pose) {
reticle.visible = true; // In mobile AR, we only have one view.
reticle.position.set(hitPose.transform.position.x, hitPose.transform.position.y, hitPose.transform.position.z); const view = pose.views[0];
reticle.updateMatrixWorld(true);
} else if (reticle) { const viewport = session.renderState.baseLayer.getViewport(view);
reticle.visible = false; renderer.setSize(viewport.width, viewport.height)
}
// Use the view's transform matrix and projection matrix to configure the THREE.camera.
renderer.render(scene, camera); camera.matrix.fromArray(view.transform.matrix)
} camera.projectionMatrix.fromArray(view.projectionMatrix);
}; camera.updateMatrixWorld(true);
session.requestAnimationFrame(onXRFrame);
} catch (error) { const hitTestResults = frame.getHitTestResults(hitTestSource);
console.error("Error in activateXR:", error); 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)
} }
}
session.requestAnimationFrame(onXRFrame);
} }
</script> </script>
</body> </body>
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Dies ist die Gitlab-Instanz des Transferportals der Hochschule für Technik Stuttgart. Hier geht es zurück zum Portal