【three.js第四课】自定义材料、贴图。
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>
