ThreeJS——3D场景中插入多个几何体
小猿在上篇文章中介绍了用Three.js绘制一个正方体所需的步骤，在这里小猿将介绍在3D场景中插入多个新几何体。绘制几何体的步骤都是那些步骤，所不同的是，这些几何体绘制的方法不一样，所需的参数不同，在这里直接完整的代码展示。
完整代码如下
<html lang="en"><head><meta charset="UTF-8"><title></title><style>body{margin: 0;overflow: hidden;}</style></head><body><script src="./../js/three.js"></script><script>/** 创建场景对象Scene* */let scene = new THREE.Scene();// 立方体网格模型let geometry1 = new THREE.BoxGeometry(100, 100, 100);let material1 = new THREE.MeshLambertMaterial({color: 0x0000ff}); // 材质对象Materiallet mesh1 = new THREE.Mesh(geometry1, material1); // 网格模型对象Mesh1scene.add(mesh1); // 网格模型添加到场景中// 球体网格模型let geometry2 = new THREE.SphereGeometry(60, 40, 40);let material2 = new THREE.MeshLambertMaterial({color: 0xff00ff});let mesh2 = new THREE.Mesh(geometry2, material2); // 网格模型对象Mesh2mesh2.translateY(120); // 球体网格模型沿Y轴正方向平移120scene.add(mesh2);// 圆柱网格模型let geometry3 = new THREE.CylinderGeometry(50, 50, 100, 25);let material3 = new THREE.MeshLambertMaterial({color: 0xffff00});let mesh3 = new THREE.Mesh(geometry3, material3); // 网格模型对象Mesh3mesh3.position.set(170, 0, 0); // 设置mesh3模型对象的xyz坐标为170,0,0scene.add(mesh3);// 正八面体let geometry4 = new THREE.OctahedronGeometry(50);let material4 = new THREE.MeshLambertMaterial({color: 0xffff00});let mesh4 = new THREE.Mesh(geometry4, material4); // 网格模型对象Mesh4mesh4.position.set(-170, 0, 0); // 设置mesh4模型对象的xyz坐标为-170,0,0scene.add(mesh4);// 正十二面体let geometry5 = new THREE.DodecahedronGeometry(50);let material5 = new THREE.MeshLambertMaterial({color: 0xffff00});let mesh5 = new THREE.Mesh(geometry5, material5); // 网格模型对象Mesh5mesh5.position.set(0, 0, -170); // 设置mesh5模型对象的xyz坐标为-170,0,0scene.add(mesh5);// 正二十面体let geometry6 = new THREE.IcosahedronGeometry(50);let material6 = new THREE.MeshLambertMaterial({color: 0xffff00});let mesh6 = new THREE.Mesh(geometry6, material6); // 网格模型对象Mesh6mesh6.position.set(0, 0, 170); // 设置mesh6模型对象的xyz坐标为170,0,0scene.add(mesh6);/*** 光源设置*///点光源let point = new THREE.PointLight(0xffffff);point.position.set(400, 200, 200);scene.add(point);//环境光let ambient = new THREE.AmbientLight(0x444444);scene.add(ambient);/*** 相机设置*/let width = window.innerWidth; //窗口宽度let height = window.innerHeight;let k = width / height; //窗口宽高比let s = 200;// 创建相机对象let camera = new THREE.OrthographicCamera(-s * k, s * k, s, -s, 1, 1000);camera.position.set(200, 300, 200); //设置相机位置camera.lookAt(scene.position); //设置相机方向(指向的场景对象)/*** 创建渲染器对象*/let renderer = new THREE.WebGLRenderer();renderer.setSize(width, height);//设置渲染区域尺寸renderer.setClearColor(0xb9d3ff, 1); //设置背景颜色document.body.appendChild(renderer.domElement); // body元素中插入canvas对象//执行渲染操作 指定场景、相机作为参数let T0 = new Date()function renderModle() {let T1 = new Date()let t = T1 - T0T0 = T1requestAnimationFrame(renderModle)renderer.render(scene, camera)mesh1.rotateY(0.0001 * t)}renderModle ()</script></body></html>
效果图如下