• three.js添加文字


    添加文字需要用到fontLoader,测试貌似只能异步。在success中回调。

    对于中文字体,需要将ttf格式转换为json格式或者是js格式之后才能使用,不过一般转换之后的文件比较大。建议使用Fontmin工具先压缩字体。比如说快上线的时候使用就可以了。

    转换格式的网站是:http://gero3.github.io/facetype.js/

    来个测试路径:https://zengxiangliang.github.io/three_text/

    源代码:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <style type="text/css">
            * {
                margin: 0;
                padding: 0;
            }
            html {
                overflow: hidden;
            }
        </style>
    </head>
    <body>
    <script type="text/javascript" src="../js/three.js"></script>
    <script type="text/javascript" src="../js/Tween.js"></script>
    <script>
        var scene, camera, renderer;
        var ww = window.innerWidth;
        var wh = window.innerHeight;
        var aspect = ww / wh;
        function initThree() {
            // 创建场景
            scene = new THREE.Scene();
            // 创建相机
            camera = new THREE.PerspectiveCamera(70, aspect, 1, 2000);
            camera.position.set(0, 0, 100);
            // 创建渲染器(WebGL渲染器)
            renderer = new THREE.WebGLRenderer({antialias: true});
            renderer.setClearColor(0x000000, 1);
            renderer.setSize(ww, wh);
            document.body.appendChild(renderer.domElement);
    
            createPointLight();
            createDireLight();
        }
        // 创建点光源 需要照亮场景
        function createPointLight() {
            var light = new THREE.PointLight(0xffe502, 1, 1000);
            light.position.set(50, 50, 50);
            scene.add(light);
        }
    
        // 创建方向光 金属感强烈
        function createDireLight() {
            var direLight = new THREE.DirectionalLight(0xffe502, 1000);
            direLight.position.set(0, 500, 0);
            direLight.castShadow = true;
            scene.add(direLight);
        }
    
        // 执行动画
        function animate() {
            TWEEN.update();
            renderer.render(scene, camera);
            requestAnimationFrame(animate)
        }
    
        // 创建文字
        function createText() {
            var text = new THREE.FontLoader().load('../font/helvetiker_bold.typeface.json', function(text) {
                var gem = new THREE.TextGeometry('51JOB', {
                    size: 20, //字号大小,一般为大写字母的高度
                    height: 10, //文字的厚度
                    weight: 'normal', //值为'normal'或'bold',表示是否加粗
                    font: text, //字体,默认是'helvetiker',需对应引用的字体文件
                    style: 'normal', //值为'normal'或'italics',表示是否斜体
                    bevelThickness: 1, //倒角厚度
                    bevelSize: 1, //倒角宽度
                    curveSegments: 30,//弧线分段数,使得文字的曲线更加光滑
                    bevelEnabled: true, //布尔值,是否使用倒角,意为在边缘处斜切
                });
                gem.center();
                var mat = new THREE.MeshPhongMaterial({
                    color: 0xffe502,
                    specular: 0x009900,
                    shininess: 30,
                    shading: THREE.FlatShading
                });
                var textObj = new THREE.Mesh(gem, mat);
                textObj.castShadow = true;
                scene.add(textObj);
                new TWEEN.Tween(textObj.rotation).to({y: Math.PI * 2}, 2000).repeat(Infinity).yoyo(true).start();
            });
        }
        // start
        function threeStart() {
            initThree();
            createText();
            animate();
        }
        // resize
        function onResize() {
            ww = window.innerWidth;
            wh = window.innerHeight;
    
            camera.aspect = ww / wh;
            camera.updateProjectionMatrix();
            renderer.setSize(ww, wh);
        }
        window.addEventListener('load', threeStart, false);
        window.addEventListener('resize', onResize, false);
    </script>
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/qianduanjingying/p/6179990.html
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