设置带有框架的加载动画 [英] set a loading animation with a-frame

问题描述

我正在使用a框架加载下面的示例代码的全景照片。加载照片时，它会显示白色屏幕，并且持续几秒钟，这会带来糟糕的用户体验。我想在加载照片时添加加载动画，但是找不到任何有用的指南。有人可以帮忙吗？

I am using a-frame to load panorama photo with the sample code below. It shows a white screen while the photo is being loaded, and it lasts a few seconds, which create a bad user experience. I want to add a loading animation while the photo is being loaded, but cannot find any useful guides. Could anyone help?

<a-scene>
  <a-assets>
    <img id="sky" src="sky.png">
  </a-assets>
  <a-sky src="#sky"></a-sky>
</a-scene>

推荐答案

我认为aframe 8将具有内置的加载屏幕。同时，这是我目前如何处理从Ott​​ifox导出的镜框场景的方法：

I think aframe 8 will have a built in loading screen. In the meantime here's how I currently tackle it for aframe scenes exported from Ottifox:

首先在 a场景之前标记，然后在正文开始后进行以下标记：

First before the a-scene tag and after the start of the body I have this markup:

<div id="splash">
  <div class="loading"></div>
</div>

然后在css文件中：

#splash {
  position: absolute;

  display: flex;
  align-items: center;
  justify-content: center;

  top: 0;
  bottom: 0;
  left: 0;
  right: 0;

  width: 200px;
  height: 200px;

  margin: auto;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.loading {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 0.25rem solid rgba(255, 255, 255, 0.2);
  border-top-color: white;
  animation: spin 1s infinite linear;
}

最后在main.js中

Finally in main.js

document.addEventListener('DOMContentLoaded', function() {
    var scene = document.querySelector('a-scene');
    var splash = document.querySelector('#splash');
    scene.addEventListener('loaded', function (e) {
        splash.style.display = 'none';
    });
});

您可以在此处查看示例的源代码，以一并查看：
http://ottifox.com/examples/space/index.html

You can view source on the example here, to see it all together: http://ottifox.com/examples/space/index.html

这篇关于设置带有框架的加载动画的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！