`
<head> <meta charset="UTF-8"> <title>第一个three.js文件_WebGL三维场景</title> <style> body { margin: 0; overflow: hidden; /* 隐藏body窗口区域滚动条 */ } </style> <!--引入three.js三维引擎--> <script src="http://www.yanhuangxueyuan.com/threejs/build/three.js"></script> <script src="js/OrbitControls.js"></script> </head> <body> <script> /** * 创建场景对象Scene */ var scene = new THREE.Scene(); /** * 创建网格模型 */ // 立方体网格模型 var geometry1 = new THREE.BoxGeometry(120, 120, 120); var material1 = new THREE.MeshLambertMaterial({ color: 0x0000ff, opacity:0.7, transparent:true}); //材质对象Material
var mesh1 = new THREE.Mesh(geometry1, material1); //网格模型对象Mesh
scene.add(mesh1); //网格模型添加到场景中
// 球体网格模型
var geometry2 = new THREE.SphereGeometry(60, 40, 40);
var material2 = new THREE.MeshLambertMaterial({
color: 0xff00ff,
specular:0x4488ee,
shininess:10
});
var mesh2 = new THREE.Mesh(geometry2, material2); //网格模型对象Mesh
mesh2.translateY(120); //球体网格模型沿Y轴正方向平移120
scene.add(mesh2);
// 圆柱网格模型
var geometry3 = new THREE.CylinderGeometry(50, 50, 100, 25);
var material3 = new THREE.MeshLambertMaterial({
color: 0xffff00,
wireframe:true
});
var mesh3 = new THREE.Mesh(geometry3, material3); //网格模型对象Mesh
// mesh3.translateX(120); //球体网格模型沿Y轴正方向平移120
mesh3.position.set(120,0,0);//设置mesh3模型对象的xyz坐标为120,0,0
scene.add(mesh3); //
// 辅助坐标系 参数250表示坐标系大小，可以根据场景大小去设置
var axisHelper = new THREE.AxisHelper(500);
scene.add(axisHelper);
/**
* 光源设置
*/
//点光源
var point = new THREE.PointLight(0xffffffff);
point.position.set(-200, -220, 300); //点光源位置
scene.add(point); //点光源添加到场景中
//环境光
var ambient = new THREE.AmbientLight(0x444444);
scene.add(ambient);
// console.log(scene)
// console.log(scene.children)
/**
* 相机设置
*/
var width = window.innerWidth; //窗口宽度
var height = window.innerHeight; //窗口高度
var k = width / height; //窗口宽高比
var s = 200; //三维场景显示范围控制系数，系数越大，显示的范围越大
//创建相机对象
var 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
*/
var 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
function render() {
renderer.render(scene,camera);//执行渲染操作
requestAnimationFrame(render);//请求再次执行渲染函数render
}
render();
var controls = new THREE.OrbitControls(camera,renderer.domElement);//创建控件对象