2022-04-09_Three.js在项目中的引用
Three.js在项目中的引用
传统静态页面引入Three.js
这里使用npm引入Three.js。
npm init
然后需要在package.json中定义：
"dependencies": {
"three": "^0.137.5"
},
继而，
npm install three
然后在我们的静态文件中test001.html，如下编写：
<!DOCTYPE html>
<html lang="en">
<head>
<title>三维界面及管道</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
</head>
<body>
<script type="importmap">
{
"imports": {
"three": "../node_modules/three/build/three.module.js"
}
}
</script>
<script type="module">
import * as THREE from '../node_modules/three/build/three.module.js';
import { OrbitControls } from "../node_modules/three/examples/jsm/controls/OrbitControls.js";
import { FontLoader } from '../node_modules/three/examples/jsm/loaders/FontLoader.js';
import { TextGeometry } from '../node_modules/three/examples/jsm/geometries/TextGeometry.js';
var scene = new THREE.Scene();
//创建管道成型的路径(3D样条曲线)
var path = new THREE.CatmullRomCurve3([
new THREE.Vector3(-100, -50, -50),
new THREE.Vector3(100, 50, 0),
new THREE.Vector3(80, 50, 50),
new THREE.Vector3(-50, 0, 100)
]);
// path:路径 40：沿着轨迹细分数 20：管道半径 25：管道截面圆细分数
var geometry = new THREE.TubeGeometry(path, 40, 20, 25);
console.log(geometry);
//材质对象
var material = new THREE.LineBasicMaterial({
color: 0x000000
});
//线条模型对象
var line = new THREE.Line(geometry, material);
scene.add(line); //线条对象添加到场景中
const points = [];
points.push( new THREE.Vector3( - 100, 50, 50 ) );
points.push( new THREE.Vector3( 0, 100, 0 ) );
points.push( new THREE.Vector3( 100, 0, 0 ) );
const geometry2= new THREE.BufferGeometry().setFromPoints( points );
const line2 = new THREE.Line( geometry2, material );
scene.add( line2 );
/**
* 光源设置
*/
//点光源
var point = new THREE.PointLight(0xffffff);
point.position.set(400, 200, 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(400, 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)、
var axesHelper = new THREE.AxesHelper( 250 );
scene.add( axesHelper );
/**
* 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
//执行渲染操作 指定场景、相机作为参数
//renderer.render(scene, camera);
function render() {
renderer.render(scene,camera);//执行渲染操作
}
render();
var controls = new OrbitControls(camera,renderer.domElement);//创建控件对象
controls.addEventListener('change', render);//监听鼠标、键盘事件
</script>
</body>
</html>
VUE项目中引入Three.js
将TJ引入到项目中，同第一步。
然后，给出源码
<template>
<div class="about">
<h1>
aaa
<div id="xxx" style="border: solid 1px red;width: 600px;height: 600px;display:block;"></div>
<canvas id="canvas" style="display: block;border: solid 1px red;display:none;">你的浏览器不支持canvas</canvas>
</h1>
</div>
</template>
<script>
/* eslint-disable no-console */
/* eslint-disable no-unused-vars */
/* eslint-disable no-extra-semi */
/* eslint-disable no-redeclare */
/* eslint-disable no-unused-labels */
/* eslint-disable no-undef */
/* eslint-disable no-case-declarations */
import * as THREE from 'three';
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';
import { FontLoader } from 'three/examples/jsm/loaders/FontLoader.js';
import { TextGeometry } from 'three/examples/jsm/geometries/TextGeometry.js';
export default {
name: "login",
data() {
return {
};
},
mounted() {
this.show_ts();
},
methods: {
show_ts() {
var scene = new THREE.Scene();
//创建管道成型的路径(3D样条曲线)
var path = new THREE.CatmullRomCurve3([
new THREE.Vector3(-100, -50, -50),
new THREE.Vector3(100, 50, 0),
new THREE.Vector3(80, 50, 50),
new THREE.Vector3(-50, 0, 100)
]);
// path:路径 40：沿着轨迹细分数 20：管道半径 25：管道截面圆细分数
var geometry = new THREE.TubeGeometry(path, 40, 20, 25);
console.log(geometry);
//材质对象
var material = new THREE.LineBasicMaterial({
color: 0x000000
});
//线条模型对象
var line = new THREE.Line(geometry, material);
scene.add(line); //线条对象添加到场景中
const points = [];
points.push( new THREE.Vector3( - 100, 50, 50 ) );
points.push( new THREE.Vector3( 0, 100, 0 ) );
points.push( new THREE.Vector3( 100, 0, 0 ) );
const geometry2= new THREE.BufferGeometry().setFromPoints( points );
const line2 = new THREE.Line( geometry2, material );
scene.add( line2 );
/**
* 光源设置
*/
//点光源
var point = new THREE.PointLight(0xffffff);
point.position.set(400, 200, 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(400, 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)、
var axesHelper = new THREE.AxesHelper( 250 );
scene.add( axesHelper );
/**
* 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
document.getElementById("xxx").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
//renderer.render(scene, camera);
function render() {
renderer.render(scene,camera);//执行渲染操作
}
render();
var controls = new OrbitControls(camera,renderer.domElement);//创建控件对象
controls.addEventListener('change', render);//监听鼠标、键盘事件
},
},
};
</script>
<style lang="less">
</style>
展示
