Star animation with three.js's game

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No:8364

1290

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Star animation with three.js
Developer User4160｜Date and time 23/7/15 14:52:16
Build time 13.907 sec｜Game capacity 1.54KB｜

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<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Star Animation</title>
  <style>
    body { margin: 0; }
    #canvas { position: fixed; }
  </style>
</head>
<body>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/110/three.min.js"></script>
  <script>
    const canvas = document.createElement('canvas');
    document.body.appendChild(canvas);
    canvas.id = 'canvas';
    
    /* Set up scene */
    const scene = new THREE.Scene();
    const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
    camera.position.z = 5;
    
    /* Create stars */
    const starGeometry = new THREE.SphereGeometry(0.03, 8, 8);
    const starMaterial = new THREE.MeshBasicMaterial({ color: 0xffffff });
    const stars = [];
    for (let i = 0; i < 50; i++) {
      const star = new THREE.Mesh(starGeometry, starMaterial);
      star.position.set(Math.random() * 10 - 5, Math.random() * 10 - 5, Math.random() * 10 - 5);
      stars.push(star);
      scene.add(star);
    }
    
    /* Set up renderer */
    const renderer = new THREE.WebGLRenderer({ canvas });
    renderer.setSize(window.innerWidth, window.innerHeight);
    
    /* Animation loop */
    function animate() {
      requestAnimationFrame(animate);
      
      for (let i = 0; i < stars.length; i++) {
        stars[i].rotation.x += 0.01;
        stars[i].rotation.y += 0.01;
        stars[i].rotation.z += 0.01;
      }
      
      renderer.render(scene, camera);
    }
    animate();
  </script>
</body>
</html>