22-THREE.JS 面材质

时间：2023-03-08 20:17:56
<!DOCTYPE html>

<html>

<head>

    <title>Example 04.05 - Mesh face material</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);

        // 创建一个渲染器

        var renderer = new THREE.WebGLRenderer();

        renderer.setClearColor(new THREE.Color(0xEEEEEE, 1.0));

        renderer.setSize(window.innerWidth, window.innerHeight);

        renderer.shadowMapEnabled = false;

        // 创建一个地面

        var planeGeometry = new THREE.PlaneGeometry(60, 40, 1, 1);

        var planeMaterial = new THREE.MeshLambertMaterial({color: 0xffffff});

        var plane = new THREE.Mesh(planeGeometry, planeMaterial);

        plane.receiveShadow = true;

        // 旋转这个地面

        plane.rotation.x = -0.5 * Math.PI;

        plane.position.x = 0;

        plane.position.y = -2;

        plane.position.z = 0;

        // 把地面添加到场景中去

        scene.add(plane);

        // 相机的坐标   和   朝向

        camera.position.x = -40;

        camera.position.y = 40;

        camera.position.z = 40;

        camera.lookAt(scene.position);

        // add subtle ambient lighting

//        var ambientLight = new THREE.AmbientLight(0x0c0c0c);

//        scene.add(ambientLight);

        // 添加聚光灯

        var spotLight = new THREE.SpotLight(0xffffff);

        spotLight.position.set(-40, 60, -10);

        spotLight.castShadow = true;

        scene.add(spotLight);

        // 把渲染后的结果放到DOM元素中去

        document.getElementById("WebGL-output").appendChild(renderer.domElement);

        var group = new THREE.Mesh();

        // 设置每个面的颜色

        var mats = [];

        mats.push(new THREE.MeshBasicMaterial({color: 0x009e60}));

        mats.push(new THREE.MeshBasicMaterial({color: 0x009e60}));

        mats.push(new THREE.MeshBasicMaterial({color: 0x0051ba}));

        mats.push(new THREE.MeshBasicMaterial({color: 0x0051ba}));

        mats.push(new THREE.MeshBasicMaterial({color: 0xffd500}));

        mats.push(new THREE.MeshBasicMaterial({color: 0xffd500}));

        mats.push(new THREE.MeshBasicMaterial({color: 0xff5800}));

        mats.push(new THREE.MeshBasicMaterial({color: 0xff5800}));

        mats.push(new THREE.MeshBasicMaterial({color: 0xC41E3A}));

        mats.push(new THREE.MeshBasicMaterial({color: 0xC41E3A}));

        mats.push(new THREE.MeshBasicMaterial({color: 0xffffff}));

        mats.push(new THREE.MeshBasicMaterial({color: 0xffffff}));

        var faceMaterial = new THREE.MeshFaceMaterial(mats);

        for (var x = 0; x < 3; x++) {

            for (var y = 0; y < 3; y++) {

                for (var z = 0; z < 3; z++) {

                    var cubeGeom = new THREE.BoxGeometry(2.9, 2.9, 2.9);

                    var cube = new THREE.Mesh(cubeGeom, faceMaterial);

                    cube.position.set(x * 3 - 3, y * 3, z * 3 - 3);

                    group.add(cube);

                }

            }

        }

        scene.add(group);

        var step = 0;

        var controls = new function () {

            this.rotationSpeed = 0.02;

            this.numberOfObjects = scene.children.length;

        };

        var gui = new dat.GUI();

        gui.add(controls, 'rotationSpeed', 0, 0.5);

        render();

        function render() {

            stats.update();

            group.rotation.y = step += 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>

　　

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