<!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, 10, 130); ???????// 场景一个渲染器 ???????var renderer = new THREE.WebGLRenderer(); ???????renderer.sortObjects = false; ???????renderer.setClearColor(new THREE.Color(0x00000, 1.0)); ???????renderer.setSize(window.innerWidth, window.innerHeight); ???????renderer.shadowMapEnabled = true; ???????// 设置相机的位置 最远最近距离 朝向 ???????camera.position.x = -50; ???????camera.position.y = 40; ???????camera.position.z = 50; ???????camera.near = 7; ???????camera.far = 139; ???????camera.lookAt(scene.position); ???????// 把渲染后的效果放到DOM元素中去 ???????document.getElementById("WebGL-output").appendChild(renderer.domElement); ???????????????var step = 0; ???????var controls = new function () { ???????????this.cameraNear = camera.near; ???????????this.cameraFar = camera.far; ???????????this.rotationSpeed = 0.02; ???????????this.numberOfObjects = scene.children.length; ???????????this.color = 0x00ff00; ???????????this.removeCube = function () { ???????????????var allChildren = scene.children; ???????????????var lastObject = allChildren[allChildren.length - 1]; ???????????????if (lastObject instanceof THREE.Mesh) { ???????????????????scene.remove(lastObject); ???????????????????this.numberOfObjects = scene.children.length; ???????????????} ???????????}; ???????????this.addCube = function () { ???????????????var cubeSize = Math.ceil(3 + (Math.random() * 3)); ???????????????var cubeGeometry = new THREE.BoxGeometry(cubeSize, cubeSize, cubeSize); ???????????????//混合材质 ???????????????var cubeMaterial = new THREE.MeshDepthMaterial(); ???????????????var colorMaterial = new THREE.MeshBasicMaterial({ ???????????????????color: controls.color, ???????????????????transparent: true, ???????????????????blending: THREE.MultiplyBlending ???????????????}); ???????????????var cube = new THREE.SceneUtils.createMultiMaterialObject(cubeGeometry, [colorMaterial, cubeMaterial]); ???????????????cube.children[1].scale.set(0.99, 0.99, 0.99); ???????????????cube.castShadow = true; ???????????????// 给正方体随机的位置 ???????????????cube.position.x = -60 + Math.round((Math.random() * 100)); ???????????????cube.position.y = Math.round((Math.random() * 10)); ???????????????cube.position.z = -100 + Math.round((Math.random() * 150)); ???????????????// 在场景中添加正方体 ???????????????scene.add(cube); ???????????????this.numberOfObjects = scene.children.length; ???????????}; ???????????this.outputObjects = function () { ???????????????console.log(scene.children); ???????????} ???????}; ???????var gui = new dat.GUI(); ???????gui.addColor(controls, ‘color‘); ???????gui.add(controls, ‘rotationSpeed‘, 0, 0.5); ???????gui.add(controls, ‘addCube‘); ???????gui.add(controls, ‘removeCube‘); ???????gui.add(controls, ‘cameraNear‘, 0, 50).onChange(function (e) { ???????????camera.near = e; ???????}); ???????gui.add(controls, ‘cameraFar‘, 50, 200).onChange(function (e) { ???????????camera.far = e; ???????}); ???????var i = 0; ???????while (i < 10) { ???????????controls.addCube(); ???????????i++; ???????} ???????render(); ???????function render() { ???????????stats.update(); ???????????// 旋转所有正方体 ???????????scene.traverse(function (e) { ???????????????if (e instanceof THREE.Mesh) { ???????????????????e.rotation.x += controls.rotationSpeed; ???????????????????e.rotation.y += controls.rotationSpeed; ???????????????????e.rotation.z += controls.rotationSpeed; ???????????????} ???????????}); ???????????????????????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>19-THREE.JS 混合材质
原文地址：https://www.cnblogs.com/shuaihan/p/9881031.html