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<!DOCTYPE html>
<html>
<head>
<title>Three.js Scene and Animation Example</title>
<style>
body {
margin: 0;
padding: 0;
}
canvas {
display: block;
}
</style>
</head>
<body>
<script src="https://threejs.org/build/three.min.js"></script>
<script>
// Set up the scene, camera, and renderer
const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
const renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
// Add lighting to the scene
const ambientLight = new THREE.AmbientLight(0xffffff, 0.5);
scene.add(ambientLight);
const pointLight = new THREE.PointLight(0xffffff, 1);
pointLight.position.set(5, 5, 5);
scene.add(pointLight);
// Create a complex shaded shape geometry and material
const geometry = new THREE.TorusKnotGeometry(1, 0.4, 256, 32, 2, 3, 1);
const material = new THREE.MeshPhongMaterial({
color: 0xffaaff,
specular: 0x999999,
shininess: 50,
flatShading: false,
});
// Create a shape mesh and add it to the scene
const shape = new THREE.Mesh(geometry, material);
scene.add(shape);
// Set up animation loop
const animate = function () {
requestAnimationFrame(animate);
// Rotate the shape
shape.rotation.x += 0.01;
shape.rotation.y += 0.01;
// Move the camera in a circle around the shape
const time = Date.now() * 0.001;
const radius = 10;
camera.position.x = Math.sin(time) * radius;
camera.position.z = Math.cos(time) * radius;
camera.lookAt(new THREE.Vector3());
// Update the lighting position to follow the camera
pointLight.position.copy(camera.position);
renderer.render(scene, camera);
};
// Start the animation loop
animate();
// Adjust camera position
camera.position.z = 10;
</script>
</body>
</html>
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