javascript - 3D 对象在我的网站上显示为黑色背景

Question

我从 three.js 中找到了一个 3d 对象，它有一个 404 文本和一个 float 球体而不是零。当我导入它的代码时，它可以工作，但背景是黑色的。我尝试使用这些值并尝试为其容器添加背景颜色，但没有成功。我也使用了检查员，但没有任何效果。我想让背景透明。

(我也试过做一个新的网站并添加它，但出现了同样的问题)

这是代码

HTML:

   <div class="cont-404">
        <p class="mega">4<span class="boom">0</span>4
        <div class="bola"></div>
        </p>
        <p class="mini">That's an error.</p>
     </div>

    <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r79/three.min.js"></script> 

CSS:

.cont-404{
    float: right;
}
.mini {
    font-size: 1em;
    color: #fff;
    line-height: 9em;
    text-indent: 2.5em;
    position: absolute;
    left: 50%;
    top: 50%; 
  }
  .mega, .bola{
    line-height: 1.65em;
    font-weight: bold;
    font-size: 11em;
    color: #fff;
    font-family: 'Roboto', saappeared
    width: 300px;
    height: 300px;
    position: absolute;
    left: 50%;
    top: 50%; 
    margin-left: -150px;
    margin-top: -150px;}
   
  .boom {color: #f5f5f5; }

JS:

var $container = $('.bola');
var renderer = new THREE.WebGLRenderer({ antialias: true });
var camera = new THREE.PerspectiveCamera(80, 1, 0.1, 10000);
var scene = new THREE.Scene();

scene.add(camera);
renderer.setSize(300, 300);
$container.append(renderer.domElement);

///////////////////////////////////////////////

// Camera
camera.position.z = 200;

// Material
var pinkMat = new THREE.MeshPhongMaterial({
    color: new THREE.Color("#C3073F"),
    emissive: new THREE.Color("rgb(0,0,0)"),
    specular: new THREE.Color("#C3073F"),
    shininess: 50,
    shading: THREE.FlatShading,
    transparent: 1,
    opacity: 1
});

var L1 = new THREE.PointLight(0xffffff, 1);
L1.position.z = 100;
L1.position.y = 100;
L1.position.x = 100;
scene.add(L1);

var L2 = new THREE.PointLight(0xffffff, 0.8);
L2.position.z = 200;
L2.position.y = 400;
L2.position.x = -100;
scene.add(L2);

// IcoSphere -> THREE.IcosahedronGeometry(80, 1) 1-4
var Ico = new THREE.Mesh(new THREE.IcosahedronGeometry(75, 1), pinkMat);
Ico.rotation.z = 0.5;
scene.add(Ico);

function update() {
    Ico.rotation.x += 2 / 100;
    Ico.rotation.y += 2 / 100;
}

// Render
function render() {
    requestAnimationFrame(render);
    renderer.render(scene, camera);
    update();
}

render();

Answer 1

var renderer = new THREE.WebGLRenderer({ antialias: true });

像这样创建渲染器:

var renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });

var pinkMat = new THREE.MeshPhongaterial({

打字错误。它应该是 MeshPhongMaterial。

color: new THREE.Color("#C3073F")appearedssive: new THREE.Color("rgb(0,0,0)"),

这一行没有意义。试试吧

color: new THREE.Color("#C3073F"),

var $container = $('.bola');

这是您在示例代码中没有使用的 jQuery 代码。

这是一个固定的实例:

var $container = document.querySelector('.bola')
var renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
var camera = new THREE.PerspectiveCamera(80, 1, 0.1, 10000);
var scene = new THREE.Scene();

scene.add(camera);
renderer.setSize(300, 300);
$container.append(renderer.domElement);

///////////////////////////////////////////////

// Camera
camera.position.z = 200;

// Material
var pinkMat = new THREE.MeshPhongMaterial({
    color: new THREE.Color("#C3073F"),
    specular: new THREE.Color("#C3073F"),
    shininess: 50,
    shading: THREE.FlatShading,
    transparent: 1,
    opacity: 1
});

var L1 = new THREE.PointLight(0xffffff, 1);
L1.position.z = 100;
L1.position.y = 100;
L1.position.x = 100;
scene.add(L1);

var L2 = new THREE.PointLight(0xffffff, 0.8);
L2.position.z = 200;
L2.position.y = 400;
L2.position.x = -100;
scene.add(L2);

// IcoSphere -> THREE.IcosahedronGeometry(80, 1) 1-4
var Ico = new THREE.Mesh(new THREE.IcosahedronGeometry(75, 1), pinkMat);
Ico.rotation.z = 0.5;
scene.add(Ico);

function update() {
    Ico.rotation.x += 2 / 100;
    Ico.rotation.y += 2 / 100;
}

// Render
function render() {
    requestAnimationFrame(render);
    renderer.render(scene, camera);
    update();
}

render();

.cont-404 {
  float: right;
}

.mini {
  font-size: 1em;
  color: #fff;
  line-height: 9em;
  text-indent: 2.5em;
  position: absolute;
  left: 50%;
  top: 50%;
}

.mega,
.bola {
  line-height: 1.65em;
  font-weight: bold;
  font-size: 11em;
  color: #fff;
  font-family: 'Roboto', saappeared width: 300px;
  height: 300px;
  position: absolute;
  left: 50%;
  top: 50%;
  margin-left: -150px;
  margin-top: -150px;
}

.boom {
  color: #f5f5f5;
}

<div class="cont-404">
  <p class="mega">4<span class="boom">0</span>4
    <div class="bola"></div>
  </p>
</div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r79/three.min.js"></script>