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

posted @ 2022-04-09 18:25  陆敏技  阅读(656)  评论(0编辑  收藏  举报
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