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Percen authoredc8847003
<!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; 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; const scene = new THREE.Scene(); const 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; models.robot.visible = false; // Start ohne sichtbar scene.add(models.robot); }); loader.load("https://immersive-web.github.io/webxr-samples/media/gltf/sunflower/sunflower.gltf", (gltf) => { models.flower = gltf.scene; models.flower.visible = false; // Start ohne sichtbar scene.add(models.flower); }); // AR-Session starten const session = await navigator.xr.requestSession('immersive-ar', { requiredFeatures: ['hit-test'] }); session.updateRenderState({ baseLayer: new XRWebGLLayer(session, gl) }); const referenceSpace = await session.requestReferenceSpace('local');
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const viewerSpace = await session.requestReferenceSpace('viewer');
const 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);
const 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);
// Interaktive Modellwahl: Schalte zwischen den Modellen basierend auf Reticle
const distanceToRobot = hitTestResults[0].distanceTo(models.robot.position);
const distanceToFlower = hitTestResults[0].distanceTo(models.flower.position);
if (distanceToRobot < distanceToFlower) {
models.robot.visible = true;
models.flower.visible = false;
} else {
models.flower.visible = true;
models.robot.visible = false;
}
}
renderer.render(scene, camera);
}
}
}
// 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>