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three.js之建立一條直線

<!DOCTYPE html>
<html>
<head>
    <meta charset=utf-8>
    <title>My first three.js app</title>
    <style>
        body {
            margin: 0;
        }

        canvas {
            width: 100%;
            height: 100%
        }
    </style>
</head>
<body>

<script src="../static/three.js-master/build/three.js"></script>
<script>


var renderer = new THREE.WebGLRenderer();  // 渲染器
renderer.setSize( window.innerWidth, window.innerHeight );  // 設定渲染器的寬度和高度
document.body.appendChild( renderer.domElement );

var camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 500 );  // 透視錄影機
camera.position.set( 0, 0, 100 );  // 設定坐标
camera.lookAt( 0, 0, 0 );

var scene = new THREE.Scene();  // 場景
// 上面是錄影機 下面是材料
//create a blue LineBasicMaterial
var material = new THREE.LineBasicMaterial( { color: 0x0000ff } );  // 定義線條的材料，接收字典類型的參數

var geometry = new THREE.Geometry();  // 聲明一個幾何體geometry
geometry.vertices.push(new THREE.Vector3( -10, 0, 0) );
geometry.vertices.push(new THREE.Vector3( 0, 10, 0) );


var line = new THREE.Line( geometry, material );  // 根據材料建立線條

scene.add( line );  // 将線條添加到場景内
renderer.render( scene, camera );  // 渲染器将場景和錄影機及線條渲染出來
html 渲染器 js代碼
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