three.js从入门到精通系列教程007 - three.js绘制空心扇形和实心扇形

发布时间：2024年01月20日
<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
    <title>three.js从入门到精通系列教程007 - three.js绘制空心扇形和实心扇形</title>
    <script src="js/three.js"></script>
    <script src="js/jquery.js"></script>
</head>

<body>
    <p><button id="myButton1">绘制空心扇形</button>
        <button id="myButton2">绘制实心扇形</button>
    </p>
    <center id="myContainer"></center>
    <script>
        //创建渲染器
        var myRenderer = new THREE.WebGLRenderer({ antialias: true });
        myRenderer.setSize(window.innerHeight, window.innerHeight);
        $("#myContainer").append(myRenderer.domElement);
        //创建场景
        var myScene = new THREE.Scene();
        //设置场景背景色
        myScene.background = new THREE.Color('white');
        //创建透视相机
        var myCamera = new THREE.PerspectiveCamera(45, 1, 1, 1000);
        //设置相机位置
        myCamera.position.set(0, 0, 160);
        //设置相机视角
        myCamera.lookAt(myScene.position);
        var myCircle;
        //渲染扇形
        animate();
        function animate() {
            myRenderer.render(myScene, myCamera);
            //定时器
            requestAnimationFrame(animate);
        }
        //响应单击“绘制空心扇形”按钮
        $("#myButton1").click(function () {
            if (myCircle) myScene.remove(myCircle);
            //创建扇形几何体
            var myGeometry = new THREE.CircleGeometry(48, 1800, 0, Math.PI * 2 * 2 / 3);
            var myMaterial = new THREE.MeshBasicMaterial({
                color: 'green', wireframe: true
            });
            myCircle = new THREE.Line(myGeometry, myMaterial);
            myScene.add(myCircle);
        });
        //响应单击“绘制实心扇形”按钮
        $("#myButton2").click(function () {
            if (myCircle) myScene.remove(myCircle);
            var myGeometry = new THREE.CircleGeometry(48, 600, 0, Math.PI * 2 * 2 / 3);
            var myMaterial = new THREE.MeshBasicMaterial({ color: 'green' });;
            myCircle = new THREE.Mesh(myGeometry, myMaterial)
            myScene.add(myCircle);
        });
    </script>
</body>

</html>

文章来源:https://blog.csdn.net/smartsmile2012/article/details/135710620
本文来自互联网用户投稿，该文观点仅代表作者本人，不代表本站立场。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。
最新文章