如何添加墙壁、窗户、门

这部分内容整体来说并不难，无论是墙壁，还是门窗户，其实质都是一个长方体，我们使用THREE.BoxGeometry这个几何体来构建这一切，完成后的效果如下：

添加三面实心的墙壁

实心的墙壁是很简单的，这里直接给出代码

//创建墙
function createCubeWall(width, height, depth, angle, material, x, y, z, name){var cubeGeometry = new THREE.BoxGeometry(width, height, depth );var cube = new THREE.Mesh( cubeGeometry, material );cube.position.x = x;cube.position.y = y;cube.position.z = z;cube.rotation.y += angle*Math.PI;  //-逆时针旋转,+顺时针cube.name = name;scene.add(cube);
}

稍微解释一下，width, height, depth这三个参数定义了长方体的长宽高，angle定义了长方体旋转的角度，material定义了物体的材质，x, y, z定义了该物体放在场景中的具体位置，name定义了该物体的名字。然后再初始化的函数中加入

//创建墙
createCubeWall(10, 200, 1400, 0, new THREE.MeshPhongMaterial({color: 0xafc0ca}), -1295, 100, 0, "墙面");

然后就可以看到这样的效果，地面上出现了一堵左侧的墙

依葫芦画瓢可以很简单地创建出三面实心的墙

//创建墙
createCubeWall(10, 200, 1400, 0, new THREE.MeshPhongMaterial({color: 0xafc0ca}), -1295, 100, 0, "墙面");
createCubeWall(10, 200, 1400, 1, new THREE.MeshPhongMaterial({color: 0xafc0ca}), 1295, 100, 0, "墙面");
createCubeWall(10, 200, 2600, 1.5, new THREE.MeshPhongMaterial({color: 0xafc0ca}), 0, 100, -700, "墙面");

创建挖去门窗的墙

首先我们来分析下，要创造一个挖去某些部分的墙其实也很简单，其实质就是先创建一个实心的墙面，然后再创建出实心的门窗，最后用某个工具像做减法一样：实心的墙面减去实心的门窗。就可以得到挖去了门窗的墙面。很幸运的是，ThreeJs给我们提供了这样的方法，使用ThreeBSP这个库就可以实现差集(相减)、并集(组合、相加)、交集(两几何体重合的部分)等一系列功能
我们先来创建需要的一面实心墙，两扇门，四扇窗户，代码如下：

//返回墙对象
function returnWallObject(width, height, depth, angle, material, x, y, z, name){var cubeGeometry = new THREE.BoxGeometry(width, height, depth);var cube = new THREE.Mesh( cubeGeometry, material );cube.position.x = x;cube.position.y = y;cube.position.z = z;cube.rotation.y += angle*Math.PI;cube.name = name;return cube;
}
//创建挖了门的墙
var wall = returnWallObject(2600, 200, 10, 0, matArrayB, 0, 100, 700, "墙面");
var door_cube1 = returnWallObject(200, 180, 10, 0, matArrayB, -600, 90, 700, "前门1");
var door_cube2 = returnWallObject(200, 180, 10, 0, matArrayB, 600, 90, 700, "前门2");
var window_cube1 = returnWallObject(100, 100, 10, 0, matArrayB, -900, 90, 700, "窗户1");
var window_cube2 = returnWallObject(100, 100, 10, 0, matArrayB, 900, 90, 700, "窗户2");
var window_cube3 = returnWallObject(100, 100, 10, 0, matArrayB, -200, 90, 700, "窗户3");
var window_cube4 = returnWallObject(100, 100, 10, 0, matArrayB, 200, 90, 700, "窗户4");
var objects_cube = [];
objects_cube.push(door_cube1);
objects_cube.push(door_cube2);
objects_cube.push(window_cube1);
objects_cube.push(window_cube2);
objects_cube.push(window_cube3);
objects_cube.push(window_cube4);
createResultBsp(wall, objects_cube);

这里我们创建了一个数组objects_cube来存放要挖去的内容，最后使用createResultBsp(wall, objects_cube)这个方法创建出挖去门窗的墙面，参数很简单，第一个是被挖去的墙，第二个是要挖去的物体的数组。该方法代码如下：

//墙上挖门窗，通过两个几何体生成BSP对象
function createResultBsp(bsp,objects_cube){var material = new THREE.MeshPhongMaterial({color:0x9cb2d1,specular:0x9cb2d1,shininess:30,transparent:true,opacity:1});var BSP = new ThreeBSP(bsp);for(var i = 0; i < objects_cube.length; i++){var less_bsp = new ThreeBSP(objects_cube[i]);BSP = BSP.subtract(less_bsp);}var result = BSP.toMesh(material);result.material.flatshading = THREE.FlatShading;result.geometry.computeFaceNormals();  //重新计算几何体侧面法向量result.geometry.computeVertexNormals();result.material.needsUpdate = true;  //更新纹理result.geometry.buffersNeedUpdate = true;result.geometry.uvsNeedUpdate = true;scene.add(result);
}

如此这般，我们就能看到如下的效果（是不是还挺简单的呢）：

安装门及窗户

接下来我们要在上面完成的挖去了门窗的墙面上安装门和窗户，我们使用三个方法来实现这个功能，因为我这里的门分为左门和右门，如果不需要的话只留下一种门就可以啦，代码如下，这三个方法类似，我就只介绍一个，方法参数很简单，width, height, depth定义了门窗的长宽高，angle定义了门窗的旋转角度，x, y, z定义了门窗的空间位置，name定义了门窗的名字。
这里都使用了THREE.TextureLoader来加载本地的图片作为门窗的贴图，门窗的实体设置为全透明，也就是opacity = 1.0和transparent = true，其他不做过多阐述。

//创建门_左侧
function createDoor_left(width, height, depth, angle, x, y, z, name){var loader = new THREE.TextureLoader();loader.load("./ThreeJs/images/door_left.png",function(texture){var doorgeometry = new THREE.BoxGeometry(width, height, depth);doorgeometry.translate(50, 0, 0);var doormaterial = new THREE.MeshBasicMaterial({map:texture,color:0xffffff});doormaterial.opacity = 1.0;doormaterial.transparent = true;var door = new THREE.Mesh( doorgeometry,doormaterial);door.position.set(x, y, z);door.rotation.y += angle*Math.PI;  //-逆时针旋转,+顺时针door.name = name;scene.add(door);});
}//创建门_右侧
function createDoor_right(width, height, depth, angle, x, y, z, name){var loader = new THREE.TextureLoader();loader.load("./ThreeJs/images/door_right.png",function(texture){var doorgeometry = new THREE.BoxGeometry(width, height, depth);doorgeometry.translate(-50, 0, 0);var doormaterial = new THREE.MeshBasicMaterial({map:texture,color:0xffffff});doormaterial.opacity = 1.0;doormaterial.transparent = true;var door = new THREE.Mesh( doorgeometry,doormaterial);door.position.set(x, y, z);door.rotation.y += angle*Math.PI;  //-逆时针旋转,+顺时针door.name = name;scene.add(door);});
}//创建窗户
function createWindow(width, height, depth, angle, x, y, z, name){var loader = new THREE.TextureLoader();loader.load("./ThreeJs/images/window.png",function(texture){var windowgeometry = new THREE.BoxGeometry(width, height, depth);var windowmaterial = new THREE.MeshBasicMaterial({map:texture,color:0xffffff});windowmaterial.opacity = 1.0;windowmaterial.transparent = true;var window = new THREE.Mesh( windowgeometry,windowmaterial);window.position.set(x, y, z);window.rotation.y += angle*Math.PI;  //-逆时针旋转,+顺时针window.name = name;scene.add(window);});
}

最后在初始化函数里加上如下的代码，就可以看到门窗都已经顺利安装成功了！

//为墙面安装门
createDoor_left(100, 180, 2, 0, -700, 90, 700, "左门1");
createDoor_right(100, 180, 2, 0, -500, 90, 700, "右门1");
createDoor_left(100, 180, 2, 0, 500, 90, 700, "左门2");
createDoor_right(100, 180, 2, 0, 700, 90, 700, "右门2");
//为墙面安装窗户
createWindow(100, 100, 2, 0, -900, 90, 700, "窗户");
createWindow(100, 100, 2, 0, 900, 90, 700, "窗户");
createWindow(100, 100, 2, 0, -200, 90, 700, "窗户");
createWindow(100, 100, 2, 0, 200, 90, 700, "窗户");

完整的代码

想了想还是把选中的功能放到下一章来讲吧，这部分比较复杂，写在这一章的话实在太长了，还请同学们多多期待吧，最后照例给出该章全部的代码。

<!DOCTYPE html>
<html>
<head includeDefault="true"><meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0"><title>3D库图显示</title><style>body {margin: 0;overflow: hidden;}#label {position: absolute;padding: 10px;background: rgba(255, 255, 255, 0.6);line-height: 1;border-radius: 5px;}</style><script src="./ThreeJs/three.js"></script><script src="./ThreeJs/stats.min.js"></script><script src="./ThreeJs/OrbitControls.js"></script><script src="./ThreeJs/OBJLoader.js"></script><script src="./ThreeJs/MTLLoader.js"></script><script src="./ThreeJs/ThreeBSP.js"></script>
</head>
<body><div id="label"></div><div id="container"></div><script>var stats = initStats();var scene, camera, renderer, controls, light, composer;var matArrayA=[];//内墙var matArrayB = [];//外墙var group = new THREE.Group();// 初始化场景function initScene() {scene = new THREE.Scene();scene.fog = new THREE.Fog( scene.background, 3000, 5000 );}// 初始化相机function initCamera() {camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 10000);camera.position.set(0, 800, 1500);camera.lookAt(new THREE.Vector3(0, 0, 0));}// 初始化灯光function initLight() {var directionalLight = new THREE.DirectionalLight( 0xffffff, 0.3 );//模拟远处类似太阳的光源directionalLight.color.setHSL( 0.1, 1, 0.95 );directionalLight.position.set( 0, 200, 0).normalize();scene.add( directionalLight );var ambient = new THREE.AmbientLight( 0xffffff, 1 ); //AmbientLight,影响整个场景的光源ambient.position.set(0,0,0);scene.add( ambient );}// 初始化性能插件function initStats() {var stats = new Stats();stats.domElement.style.position = 'absolute';stats.domElement.style.left = '0px';stats.domElement.style.top = '0px';document.body.appendChild(stats.domElement);return stats;}// 初始化渲染器function initRenderer() {renderer = new THREE.WebGLRenderer({antialias: true});renderer.setSize(window.innerWidth, window.innerHeight);renderer.setClearColor(0x4682B4,1.0);document.body.appendChild(renderer.domElement);}//创建地板function createFloor(){var loader = new THREE.TextureLoader();loader.load("./ThreeJs/images/floor.jpg",function(texture){texture.wrapS = texture.wrapT = THREE.RepeatWrapping;texture.repeat.set( 10, 10 );var floorGeometry = new THREE.BoxGeometry(2600, 1400, 1);var floorMaterial = new THREE.MeshBasicMaterial( { map: texture, side: THREE.DoubleSide } );var floor = new THREE.Mesh(floorGeometry, floorMaterial);floor.position.y = -0.5;floor.rotation.x = Math.PI / 2;floor.name = "地面";scene.add(floor);});}//创建墙function createCubeWall(width, height, depth, angle, material, x, y, z, name){var cubeGeometry = new THREE.BoxGeometry(width, height, depth );var cube = new THREE.Mesh( cubeGeometry, material );cube.position.x = x;cube.position.y = y;cube.position.z = z;cube.rotation.y += angle*Math.PI;  //-逆时针旋转,+顺时针cube.name = name;scene.add(cube);}//创建门_左侧function createDoor_left(width, height, depth, angle, x, y, z, name){var loader = new THREE.TextureLoader();loader.load("./ThreeJs/images/door_left.png",function(texture){var doorgeometry = new THREE.BoxGeometry(width, height, depth);doorgeometry.translate(50, 0, 0);var doormaterial = new THREE.MeshBasicMaterial({map:texture,color:0xffffff});doormaterial.opacity = 1.0;doormaterial.transparent = true;var door = new THREE.Mesh( doorgeometry,doormaterial);door.position.set(x, y, z);door.rotation.y += angle*Math.PI;  //-逆时针旋转,+顺时针door.name = name;scene.add(door);});}//创建门_右侧function createDoor_right(width, height, depth, angle, x, y, z, name){var loader = new THREE.TextureLoader();loader.load("./ThreeJs/images/door_right.png",function(texture){var doorgeometry = new THREE.BoxGeometry(width, height, depth);doorgeometry.translate(-50, 0, 0);var doormaterial = new THREE.MeshBasicMaterial({map:texture,color:0xffffff});doormaterial.opacity = 1.0;doormaterial.transparent = true;var door = new THREE.Mesh( doorgeometry,doormaterial);door.position.set(x, y, z);door.rotation.y += angle*Math.PI;  //-逆时针旋转,+顺时针door.name = name;scene.add(door);});}//创建窗户function createWindow(width, height, depth, angle, x, y, z, name){var loader = new THREE.TextureLoader();loader.load("./ThreeJs/images/window.png",function(texture){var windowgeometry = new THREE.BoxGeometry(width, height, depth);var windowmaterial = new THREE.MeshBasicMaterial({map:texture,color:0xffffff});windowmaterial.opacity = 1.0;windowmaterial.transparent = true;var window = new THREE.Mesh( windowgeometry,windowmaterial);window.position.set(x, y, z);window.rotation.y += angle*Math.PI;  //-逆时针旋转,+顺时针window.name = name;scene.add(window);});}//返回墙对象function returnWallObject(width, height, depth, angle, material, x, y, z, name){var cubeGeometry = new THREE.BoxGeometry(width, height, depth);var cube = new THREE.Mesh( cubeGeometry, material );cube.position.x = x;cube.position.y = y;cube.position.z = z;cube.rotation.y += angle*Math.PI;cube.name = name;return cube;}//墙上挖门，通过两个几何体生成BSP对象function createResultBsp(bsp,objects_cube){var material = new THREE.MeshPhongMaterial({color:0x9cb2d1,specular:0x9cb2d1,shininess:30,transparent:true,opacity:1});var BSP = new ThreeBSP(bsp);for(var i = 0; i < objects_cube.length; i++){var less_bsp = new ThreeBSP(objects_cube[i]);BSP = BSP.subtract(less_bsp);}var result = BSP.toMesh(material);result.material.flatshading = THREE.FlatShading;result.geometry.computeFaceNormals();  //重新计算几何体侧面法向量result.geometry.computeVertexNormals();result.material.needsUpdate = true;  //更新纹理result.geometry.buffersNeedUpdate = true;result.geometry.uvsNeedUpdate = true;scene.add(result);}//创建墙纹理function createWallMaterail(){matArrayA.push(new THREE.MeshPhongMaterial({color: 0xafc0ca}));  //前  0xafc0ca :灰色matArrayA.push(new THREE.MeshPhongMaterial({color: 0xafc0ca}));  //后matArrayA.push(new THREE.MeshPhongMaterial({color: 0xd6e4ec}));  //上  0xd6e4ec： 偏白色matArrayA.push(new THREE.MeshPhongMaterial({color: 0xd6e4ec}));  //下matArrayA.push(new THREE.MeshPhongMaterial({color: 0xafc0ca}));  //左    0xafc0ca :灰色matArrayA.push(new THREE.MeshPhongMaterial({color: 0xafc0ca}));  //右matArrayB.push(new THREE.MeshPhongMaterial({color: 0xafc0ca}));  //前  0xafc0ca :灰色matArrayB.push(new THREE.MeshPhongMaterial({color: 0x9cb2d1}));  //后  0x9cb2d1：淡紫matArrayB.push(new THREE.MeshPhongMaterial({color: 0xd6e4ec}));  //上  0xd6e4ec： 偏白色matArrayB.push(new THREE.MeshPhongMaterial({color: 0xd6e4ec}));  //下matArrayB.push(new THREE.MeshPhongMaterial({color: 0xafc0ca}));  //左   0xafc0ca :灰色matArrayB.push(new THREE.MeshPhongMaterial({color: 0xafc0ca}));  //右}// 初始化模型function initContent() {createFloor();createWallMaterail();createCubeWall(10, 200, 1400, 0, matArrayB, -1295, 100, 0, "墙面");createCubeWall(10, 200, 1400, 1, matArrayB, 1295, 100, 0, "墙面");createCubeWall(10, 200, 2600, 1.5, matArrayB, 0, 100, -700, "墙面");//创建挖了门的墙var wall = returnWallObject(2600, 200, 10, 0, matArrayB, 0, 100, 700, "墙面");var door_cube1 = returnWallObject(200, 180, 10, 0, matArrayB, -600, 90, 700, "前门1");var door_cube2 = returnWallObject(200, 180, 10, 0, matArrayB, 600, 90, 700, "前门2");var window_cube1 = returnWallObject(100, 100, 10, 0, matArrayB, -900, 90, 700, "窗户1");var window_cube2 = returnWallObject(100, 100, 10, 0, matArrayB, 900, 90, 700, "窗户2");var window_cube3 = returnWallObject(100, 100, 10, 0, matArrayB, -200, 90, 700, "窗户3");var window_cube4 = returnWallObject(100, 100, 10, 0, matArrayB, 200, 90, 700, "窗户4");var objects_cube = [];objects_cube.push(door_cube1);objects_cube.push(door_cube2);objects_cube.push(window_cube1);objects_cube.push(window_cube2);objects_cube.push(window_cube3);objects_cube.push(window_cube4);createResultBsp(wall, objects_cube);//为墙面安装门createDoor_left(100, 180, 2, 0, -700, 90, 700, "左门1");createDoor_right(100, 180, 2, 0, -500, 90, 700, "右门1");createDoor_left(100, 180, 2, 0, 500, 90, 700, "左门2");createDoor_right(100, 180, 2, 0, 700, 90, 700, "右门2");//为墙面安装窗户createWindow(100, 100, 2, 0, -900, 90, 700, "窗户");createWindow(100, 100, 2, 0, 900, 90, 700, "窗户");createWindow(100, 100, 2, 0, -200, 90, 700, "窗户");createWindow(100, 100, 2, 0, 200, 90, 700, "窗户");}// 初始化轨迹球控件function initControls() {controls = new THREE.OrbitControls( camera, renderer.domElement );controls.enableDamping = true;controls.dampingFactor = 0.5;// 视角最小距离controls.minDistance = 100;// 视角最远距离controls.maxDistance = 5000;// 最大角度controls.maxPolarAngle = Math.PI/2.2;}// 更新控件function update() {stats.update();controls.update();}// 初始化function init() {initScene();initCamera();initRenderer();initContent();initLight();initControls();document.addEventListener('resize', onWindowResize, false);}// 窗口变动触发的方法function onWindowResize() {camera.aspect = window.innerWidth / window.innerHeight;camera.updateProjectionMatrix();renderer.setSize(window.innerWidth, window.innerHeight);}function animate() {requestAnimationFrame(animate);renderer.render(scene, camera);update();}init();animate();</script>
</body>
</html>

结束语

回顾下第一章我们涉及了基础场景的创建，包括场景、相机、光源、控制器等等。第二章我们讲解了如何创造实心的墙面和带有门窗的墙面。下一章我们将会推出如何选中一个物体并给其加上选中后的特效。
我跟广大学习ThreeJs的初学者一样，仍带着懵懂的心去探索这片新大陆，CSDN上的许多前辈都给了我很多关键的灵感和技术方法，如果大家有兴趣，也可以互相交流成长，欢迎大家指导咨询。PS：大家有兴趣可以点进去我的头像，陆陆续续也写了十来篇了。
链接：使用ThreeJs从零开始构建3D智能仓库——第一章: 点我跳转.
链接：使用ThreeJs从零开始构建3D智能仓库——第二章: 点我跳转.
链接：使用ThreeJs从零开始构建3D智能仓库——第三章: 点我跳转.
链接：使用ThreeJs从零开始构建3D智能仓库——第四章: 点我跳转.
链接：使用ThreeJs从零开始构建3D智能仓库——第五章: 点我跳转.

使用ThreeJs从零开始构建3D智能仓库——第二章（创建地面与门窗）相关推荐

使用ThreeJs从零开始构建3D智能仓库——第一章（一切的基础）
引用链接:https://blog.csdn.net/homula123/article/details/101197463 使用ThreeJs从零开始构建3D智能仓库--第一章写在前面如何实现 ...
使用ThreeJs从零开始构建3D智能仓库——第五章（添加货架、货物与侧边栏）
使用ThreeJs从零开始构建3D智能仓库--第五章写在前面创建货架对象创建货架.货位类根据配置添加货架添加货物添加信息侧边栏结束语写在前面本章我们来讲解下如何添加货架货物和显示各类 ...
使用ThreeJs从零开始构建3D智能仓库——第三章（选中物体与特效）
使用ThreeJs从零开始构建3D智能仓库--第三章写在前面--目录结构如何选中物体选中物体的原理选中物体的实现添加选中后的发光特效 HTML更新如下结束语写在前面--目录结构这一章我 ...
使用ThreeJs从零开始构建3D智能仓库——第四章（添加动画及库区）
使用ThreeJs从零开始构建3D智能仓库--第四章写在前面使用TweenJS创建补间动画 TweenJS简介开关门动画的实现添加库区与文字结束语写在前面本章我们来探索下如何添加补间动画 ...
benet 3.0的构建企业网络视频第二章地址
benet 3.0 构建企业网络视频第二章,网络介质第二部分: http://www.namipan.com/d/3-2%e5%8f%8c%e7%bb%9e%e7%ba%bf%e5%81%9a%e6 ...
《构建之法》第二章读书摘要
第二章个人技术和流程 <构建之法>第二章主要讲了个人技术和流程,因为团队需要一定的流程来管理开发活动,每个工程师在软件生命周期所做的工作也应该有一个流程,这一章中着重介绍PSP,即个 ...
从零开始Android游戏编程（第二版）第二章创建第一个程序Hello Tank
第二章创建第一个程序Hello Tank 难度:容易现在开始,我们要真正写作Android程序了.虽然前面安装过程那么复杂,但是写起程序来却是非常简单.而且为了让大家有一个直观的认识,本文不会叙述 ...
《Effective Java》学习笔记第二章创建和销毁对象
第二章创建和销毁对象何时以及如何创建对象,何时以及如何避免创建对象,如何确保他们能够适时地销毁,以及如何管理对象销毁之前必须进行的各种清理动作. 1 考虑用静态工厂方法代替构造器一般在某处获取一 ...
[Effective Java]第二章创建和销毁对象
第一章前言略... 第二章创建和销毁对象 1. 考虑用静态工厂方法代替构造器创建对象方法:一是最常用的公有构造器,二是静态工厂方法.下面是一个Bool ...

使用ThreeJs从零开始构建3D智能仓库——第二章（创建地面与门窗）

使用ThreeJs从零开始构建3D智能仓库——第二章

最新进展