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Percen authored30a90c4b
<!doctype html><html lang="de"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>GeoVis AR Projekt</title> <style> body { margin: 0; font-family: Arial, sans-serif; background-color: #f0f0f0; color: #333; display: flex; justify-content: center; align-items: center; height: 100vh; background-image: url('https://www.hft-stuttgart.de/fileadmin/Dateien/Hochschule/-_R_Juergen_Pollak_HFT_18.04.18-0091.jpg'); background-size: cover; background-position: center; } </style> <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> <script> let selectedModel = 'robot'; // Standardauswahl let models = {}; let reticle; let currentModel = null; let scene; let camera; let hitTestSource; let hitTestResults = []; async function activateXR() { const canvas = document.createElement('canvas'); document.body.appendChild(canvas); const gl = canvas.getContext('webgl', { xrCompatible: true }); const renderer = new THREE.WebGLRenderer({ alpha: true, canvas, context: gl }); renderer.autoClear = false; scene = new THREE.Scene(); camera = new THREE.PerspectiveCamera(); camera.matrixAutoUpdate = false; // Licht hinzufügen const light = new THREE.DirectionalLight(0xffffff, 1); light.position.set(10, 10, 10); scene.add(light); // Reticle (Cursor) const loader = new THREE.GLTFLoader(); loader.load("https://immersive-web.github.io/webxr-samples/media/gltf/reticle/reticle.gltf", (gltf) => { reticle = gltf.scene; reticle.visible = false; scene.add(reticle); }); // Modelle laden loader.load("https://threejs.org/examples/models/gltf/RobotExpressive/RobotExpressive.glb", (gltf) => { models.robot = gltf.scene; }); loader.load("https://immersive-web.github.io/webxr-samples/media/gltf/sunflower/sunflower.gltf", (gltf) => { models.flower = gltf.scene; }); // AR-Session starten const session = await navigator.xr.requestSession('immersive-ar', { requiredFeatures: ['hit-test'] }); session.updateRenderState({ baseLayer: new XRWebGLLayer(session, gl) });
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const referenceSpace = await session.requestReferenceSpace('local');
const viewerSpace = await session.requestReferenceSpace('viewer');
hitTestSource = await session.requestHitTestSource({ space: viewerSpace });
session.requestAnimationFrame(onXRFrame);
// AR-Rendering
function 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);
hitTestResults = frame.getHitTestResults(hitTestSource);
if (hitTestResults.length > 0) {
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);
// Das Modell an der Reticle-Position platzieren
if (currentModel) {
currentModel.position.set(hitPose.transform.position.x, hitPose.transform.position.y, hitPose.transform.position.z);
}
}
renderer.render(scene, camera);
}
}
}
// Touch Events für Swipe-Geste
let startX = 0;
let startY = 0;
let endX = 0;
let endY = 0;
const threshold = 50; // Mindestdistanz für die Swipe-Erkennung
// Event Listener für Touch-Ereignisse
document.body.addEventListener('touchstart', (event) => {
// Die Startposition der Geste speichern
startX = event.touches[0].clientX;
startY = event.touches[0].clientY;
});
document.body.addEventListener('touchend', (event) => {
// Berechne die Distanz in der X- und Y-Richtung
endX = event.changedTouches[0].clientX;
endY = event.changedTouches[0].clientY;
let deltaX = endX - startX;
let deltaY = endY - startY;
// Wenn der Swipe horizontal ist (Links oder Rechts)
if (Math.abs(deltaX) > Math.abs(deltaY) && Math.abs(deltaX) > threshold) {
if (deltaX > 0) {
// Swipe nach rechts -> Wechseln zum nächsten Modell
switchModel('next');
} else {
// Swipe nach links -> Wechseln zum vorherigen Modell
switchModel('previous');
}
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}
});
// Funktion zum Modellwechsel
function switchModel(direction) {
// Entferne das aktuelle Modell nur, wenn es bereits in der Szene ist
if (currentModel) {
scene.remove(currentModel);
}
// Bestimmen, welches Modell ausgewählt wird
if (direction === 'next') {
selectedModel = selectedModel === 'robot' ? 'flower' : 'robot';
} else if (direction === 'previous') {
selectedModel = selectedModel === 'robot' ? 'flower' : 'robot';
}
// Das ausgewählte Modell hinzufügen
currentModel = models[selectedModel].clone(); // Erstelle eine Kopie des Modells
scene.add(currentModel);
}
// AR starten
if (navigator.xr) {
const startButton = document.createElement('button');
startButton.textContent = 'Start AR';
startButton.style.cssText = "position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); padding: 15px; font-size: 18px;";
document.body.appendChild(startButton);
startButton.onclick = () => {
startButton.remove();
activateXR();
};
} else {
alert('WebXR wird nicht unterstützt.');
}
</script>
</body>
</html>