<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>3.js测试六-二</title> </head> <body> <canvas ></canvas> </body> <script type="text/javascript" src="https://www.jb51.net/js/three.js"></script> <script type="text/javascript"> function init() { var renderer = new THREE.WebGLRenderer({ canvas: document.getElementById('mainCanvas') }); renderer.setClearColor(0x000000); var scene = new THREE.Scene(); // camera var camera = new THREE.OrthographicCamera(-5, 5, 3.75, -3.75, 0.1, 100); camera.position.set(25, 25, 25); camera.lookAt(new THREE.Vector3(0, 0, 0)); scene.add(camera); var material = new THREE.MeshBasicMaterial({ color: 0xffff00, wireframe: true }); // 初始化几何形状 var geometry = new THREE.Geometry(); // 设置顶点位置 // 顶部4顶点 geometry.vertices.push(new THREE.Vector3(-1, 2, -1)); geometry.vertices.push(new THREE.Vector3(1, 2, -1)); geometry.vertices.push(new THREE.Vector3(1, 2, 1)); geometry.vertices.push(new THREE.Vector3(-1, 2, 1)); // 底部4顶点 geometry.vertices.push(new THREE.Vector3(-2, 0, -2)); geometry.vertices.push(new THREE.Vector3(2, 0, -2)); geometry.vertices.push(new THREE.Vector3(2, 0, 2)); geometry.vertices.push(new THREE.Vector3(-2, 0, 2)); // 设置顶点连接情况 // 顶面 geometry.faces.push(new THREE.Face3(0, 1, 3)); geometry.faces.push(new THREE.Face3(1, 2, 3)); // geometry.faces.push(new THREE.Face4(0, 1, 2, 3)); // 底面 geometry.faces.push(new THREE.Face3(4, 5, 6)); geometry.faces.push(new THREE.Face3(5, 6, 7)); // geometry.faces.push(new THREE.Face4(4, 5, 6, 7)); // 侧面 geometry.faces.push(new THREE.Face3(1, 5, 6)); geometry.faces.push(new THREE.Face3(6, 2, 1)); geometry.faces.push(new THREE.Face3(2, 6, 7)); geometry.faces.push(new THREE.Face3(7, 3, 2)); geometry.faces.push(new THREE.Face3(3, 7, 0)); geometry.faces.push(new THREE.Face3(7, 4, 0)); geometry.faces.push(new THREE.Face3(0, 4, 5)); geometry.faces.push(new THREE.Face3(0, 5, 1)); // // 四个顶点组成的面 // geometry.faces.push(new THREE.Face4(0, 1, 5, 4)); // geometry.faces.push(new THREE.Face4(1, 2, 6, 5)); // geometry.faces.push(new THREE.Face4(2, 3, 7, 6)); // geometry.faces.push(new THREE.Face4(3, 0, 4, 7)); var mesh = new THREE.Mesh(geometry, material); scene.add(mesh); // render renderer.render(scene, camera); } </script> </html>
需要注意的是，new THREE.Vector3(-1, 2, -1)创建一个矢量，作为顶点位置追加到geometry.vertices数组中。
而由new THREE.Face3(0, 1, 2)创建一个三个顶点组成的面，追加到geometry.faces数组中。三个参数分别是三个顶点在geometry.vertices中的序号。如果需要设置由四个顶点组成的面片，可以类似地使用THREE.Face4。
//顶面 geometry.faces.push(new THREE.Face4(0, 1, 2, 3)); //底面 geometry.faces.push(new THREE.Face4(4, 5, 6, 7)); //四个侧面 geometry.faces.push(new THREE.Face4(0, 1, 5, 4)); geometry.faces.push(new THREE.Face4(1, 2, 6, 5)); geometry.faces.push(new THREE.Face4(2, 3, 7, 6)); geometry.faces.push(new THREE.Face4(3, 0, 4, 7));
以上就是小编为大家整理的Three.js学习之文字形状及自定义形状的全部内容，之前小编也整理了几篇关于Three.js的相关文章，有需要的可以通过下面相关文章的链接查看，希望能帮到学习Three.js的大家。
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