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Esguerra Montana authoredb45d5d87
<!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>Hit to Place Demo</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() { try { 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://transfer.hft-stuttgart.de/gitlab/32esla1mpg/webarTTP/-/tree/master/media/reticle.gltf", function(gltf) { reticle = gltf.scene; reticle.visible = false; scene.add(reticle); console.log("Reticle loaded successfully"); }, undefined, function(error) { console.error("Error loading reticle:", error); }); let model; loader.load("https://transfer.hft-stuttgart.de/gitlab/32esla1mpg/webarTTP/-/tree/master/media/sunflower.gltf", function(gltf) { model = gltf.scene; console.log("Model loaded successfully"); }, undefined, function(error) { console.error("Error loading model:", error); }); session.addEventListener("select", (event) => { if (model && reticle.visible) { const clone = model.clone();
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clone.position.copy(reticle.position);
scene.add(clone);
console.log("Model placed in scene");
}
});
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);
} else if (reticle) {
reticle.visible = false;
}
renderer.render(scene, camera);
}
};
session.requestAnimationFrame(onXRFrame);
} catch (error) {
console.error("Error in activateXR:", error);
}
}
</script>
</body>
</html>