three.js —— 3D球体旋转
运行效果 代码
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>3D球体</title>
<style>
* {
padding: 0;
margin: 0;
}
</style>
<script src="https://cdn.bootcss.com/three.js/r81/three.js"></script>
</head>
<body>
<script type="text/javascript">
var scene,
camera,
renderer;
scene = new THREE.Scene(); // 创建场景
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000); // 创建相机
renderer = new THREE.WebGLRenderer(); // 渲染器
renderer.setSize(window.innerWidth, window.innerHeight); // 设置渲染器 大小
document.body.appendChild(renderer.domElement);
scene.add(camera);
camera.position.z = 600;
var radius = 3,
segemnt = 20,
rings = 20,
R = 300;
// THREE.Group继承自THREE.Object3D对象，并且和THREE.Object3D对象没有任何区别，仅仅是名字上的差异。
var group = new THREE.Group();
var bows = new THREE.Group();
var sphereMaterial = new THREE.MeshLambertMaterial({
color: 0xff0000
});
for (var i = 0; i < 19; i++) {
var ball = new THREE.Mesh(new THREE.SphereGeometry(radius, segemnt, rings), sphereMaterial);
ball.position.x = R * Math.sin((Math.PI / 18) * i);
ball.position.y = R * Math.cos((Math.PI / 18) * i);
group.add(ball);
}
for (var j = 0; j < 36; j++) {
var bow = group.clone();
bow.rotation.y = Math.PI * 2 / 36 * j;
bows.add(bow);
}
scene.add(bows);
var pointLight = new THREE.PointLight(0Xffffff);
pointLight.position.x = 0;
pointLight.position.y = 0;
pointLight.position.z = 1000;
scene.add(pointLight);
var mouseX, mouseY, isMove = false;
animation();
function animation() {
if (!isMove) {
requestAnimationFrame(animation); //循环调用函数
bows.rotation.y += Math.PI * 0.001;
bows.rotation.x += Math.PI * 0.001;
render(); //渲染界面
}
}
function render() {
renderer.render(scene, camera);
}
/**
鼠标点击
**/
document.onmousedown = function(e) {
isMove = true;
mouseX = e.pageX;
mouseY = e.pageY;
};
document.onmousemove = function(e) {
if (isMove) {
var x = e.pageX;
var y = e.pageY;
var _x = x - mouseX;
var _y = y - mouseY;
bows.rotation.x += _y * 0.001 * Math.PI;
bows.rotation.y += _x * 0.001 * Math.PI;
render();
mouseX = x;
mouseY = y;
}
};
document.onmouseup = function() {
isMove = false;
animation();
}
</script>
</body>
</html>