1.先去下载6张不同的图片素材放到项目中。

2.在【three.js第三课】的代码基础上添加自定义的材料

//自定义材料 cubeMaterial 数组        //map:用于加载图片,THREE.TextureLoader().load('图片的地址')方法引入要放的图片,也可以用16进制的颜色替换:color:0xFFFFFF        //side:用于设置显示面。属性可设置为双面DoubleSide,前面FontSide,后面BackSide        var cubeMaterial = [            //右            new THREE.MeshBasicMaterial({color:0xFFFFFF,side:THREE.DoubleSide}),            //左            new THREE.MeshBasicMaterial({map: new THREE.TextureLoader().load('images/2.png') ,side:THREE.FontSide}),            //上            new THREE.MeshBasicMaterial({map: new THREE.TextureLoader().load('images/3.png') ,side:THREE.BackSide}),            //下            new THREE.MeshBasicMaterial({map: new THREE.TextureLoader().load('images/4.png') ,side:THREE.DoubleSide}),            //前            new THREE.MeshBasicMaterial({map: new THREE.TextureLoader().load('images/5.png') ,side:THREE.DoubleSide}),            //后            new THREE.MeshBasicMaterial({map: new THREE.TextureLoader().load('images/6.png') ,side:THREE.DoubleSide})         ];

3.将原来的创建材料代码

var material = new THREE.MeshBasicMaterial({color:0xFFFFFF,wireframe:true});

改成

var material = new THREE.MeshFaceMaterial(cubeMaterial);//cubeMaterial:为自定义的材料数组的名称

4.运行观察不同方位的显示情况,并修改cubeMaterial 数组中side属性的值,进行观察

5.全部代码:

<!DOCTYPE html><html><head>    <title>demo1</title></head><style type="text/css">   body{        margin:0;   }   canvas{        width:100%;        height:100%;   }</style><body>    <script src="jquery.min.js"></script>    <script src="../build/three.js"></script>    <script src="../examples/js/controls/OrbitControls.js"></script>    <script type="text/javascript">         var scene = new THREE.Scene();//创建场景        //创建一个摄像机对象        var camera = new THREE.PerspectiveCamera(75,window.innerWidth / window.innerHeight, 0.1, 1000);          //创建渲染器        var renderer = new THREE.WebGLRenderer();        renderer.setSize(window.innerWidth, window.innerHeight);               document.body.appendChild(renderer.domElement);//渲染到浏览器         //加入事件监听器,窗口自适应        window.addEventListener('resize', function(){            var width = window.innerWidth;            var height = window.innerHeight;            renderer.setSize(width,height);            camera.aspect = width/height;            camera.updateProjectionMatrix();        })         //轨道控制 镜头的移动        var controls = new THREE.OrbitControls(camera,renderer.document);         //创建形状 BoxGeometry        var geometry = new THREE.BoxGeometry(1,1,1);                //自定义材料        //map:用于加载图片,也可以用16进制的颜色替换:color:0xFFFFFF        //side:用于设置显示面。属性可设置为双面DoubleSide,前面FontSide,后面BackSide        var cubeMaterial = [            //右            new THREE.MeshBasicMaterial({color:0xFFFFFF,side:THREE.DoubleSide}),            //左            new THREE.MeshBasicMaterial({map: new THREE.TextureLoader().load('images/2.png') ,side:THREE.FontSide}),            //上            new THREE.MeshBasicMaterial({map: new THREE.TextureLoader().load('images/3.png') ,side:THREE.BackSide}),            //下            new THREE.MeshBasicMaterial({map: new THREE.TextureLoader().load('images/4.png') ,side:THREE.DoubleSide}),            //前            new THREE.MeshBasicMaterial({map: new THREE.TextureLoader().load('images/5.png') ,side:THREE.DoubleSide}),            //后            new THREE.MeshBasicMaterial({map: new THREE.TextureLoader().load('images/6.png') ,side:THREE.DoubleSide})         ];         //创建材料   wireframe是否使用线条        //var material = new THREE.MeshBasicMaterial({color:0xFFFFFF,wireframe:true});        var material = new THREE.MeshFaceMaterial(cubeMaterial);         //将材料和形状结合        var cube = new THREE.Mesh(geometry,material);                //加入场景中        scene.add(cube);         camera.position.z=3;//设置相机的位置          //逻辑        var update=function(){            //物体随着XY轴旋转            //cube.rotation.x +=0.01;            //cube.rotation.y += 0.005;        }         //绘画渲染        var render=function() {            renderer.render(scene,camera);        }         //循环运行update,render        var loop=function() {             requestAnimationFrame(loop);             update();             render();        }         loop();//循环开始</script></body></html>


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文章标题:【three.js第四课】自定义材料、贴图。发布于2024-01-16 22:33:14

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