<!DOCTYPE html> <html> <head> <title></title> <script src="https://cdn.bootcss.com/three.js/r67/three.js"></script> <script src="https://cdn.bootcss.com/stats.js/r10/Stats.min.js"></script> <script type="text/javascript" src="https://cdn.bootcss.com/dat-gui/0.7.3/dat.gui.js"></script> <style> body { margin: 0; overflow: hidden; } </style> </head> <body> <div id="Stats-output"> </div> <div id="WebGL-output"> </div> <script type="text/javascript"> // 初始化 function init() { var stats = initStats(); // 创建一个场景 var scene = new THREE.Scene(); // 创建一个相机 var camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000); // 创建渲染器 var renderer = new THREE.WebGLRenderer(); renderer.setClearColor(new THREE.Color(0xEEEEEE, 1.0)); renderer.setSize(window.innerWidth, window.innerHeight); renderer.shadowMapEnabled = true; // 创建地面 var planeGeometry = new THREE.PlaneGeometry(60, 20, 1, 1); var planeMaterial = new THREE.MeshLambertMaterial({color: 0xffffff}); var plane = new THREE.Mesh(planeGeometry, planeMaterial); plane.receiveShadow = true; // 旋转地面 ->水平方向 plane.rotation.x = -0.5 * Math.PI; plane.position.x = 15; plane.position.y = 0; plane.position.z = 0; // 在场景中添加地面 scene.add(plane); // 创建正方体 var cubeGeometry = new THREE.BoxGeometry(4, 4, 4); var cubeMaterial = new THREE.MeshLambertMaterial({color: 0xff0000}); var cube = new THREE.Mesh(cubeGeometry, cubeMaterial); cube.castShadow = true; // 正方体坐标 cube.position.x = -4; cube.position.y = 3; cube.position.z = 0; // 添加正方体 scene.add(cube); var sphereGeometry = new THREE.SphereGeometry(4, 20, 20); var sphereMaterial = new THREE.MeshLambertMaterial({color: 0x7777ff}); var sphere = new THREE.Mesh(sphereGeometry, sphereMaterial); // 给圆球坐标 sphere.position.x = 20; sphere.position.y = 0; sphere.position.z = 2; sphere.castShadow = true; // 添加圆球 scene.add(sphere); // 给相机坐标 camera.position.x = -30; camera.position.y = 40; camera.position.z = 30; camera.lookAt(scene.position); // 自然光 var ambientLight = new THREE.AmbientLight(0x0c0c0c); scene.add(ambientLight); // 聚光灯 var spotLight = new THREE.SpotLight(0xffffff); spotLight.position.set(-40, 60, -10); spotLight.castShadow = true; scene.add(spotLight); // 添加场景到DOM中去 document.getElementById("WebGL-output").appendChild(renderer.domElement); var step = 0;
/*右上角的控制代码*/
var controls = new function () { this.rotationSpeed = 0.02; this.bouncingSpeed = 0.03; }; var gui = new dat.GUI(); gui.add(controls, 'rotationSpeed', 0, 0.5); gui.add(controls, 'bouncingSpeed', 0, 0.5); render(); function render() { stats.update(); //旋转正方形 cube.rotation.x += controls.rotationSpeed; cube.rotation.y += controls.rotationSpeed; cube.rotation.z += controls.rotationSpeed; // 球体滚动 step += controls.bouncingSpeed; sphere.position.x = 20 + ( 10 * (Math.cos(step))); sphere.position.y = 2 + ( 10 * Math.abs(Math.sin(step))); // render using requestAnimationFrame requestAnimationFrame(render); renderer.render(scene, camera); } function initStats() { var stats = new Stats(); stats.setMode(0); // 0: fps, 1: ms stats.domElement.style.position = 'absolute'; stats.domElement.style.left = '0px'; stats.domElement.style.top = '0px'; document.getElementById("Stats-output").appendChild(stats.domElement); return stats; } } window.onload = init; </script> </body> </html>
用GUI控制物体的动作