我想在所有 Assets 加载和渲染之前显示一个预加载屏幕。
我尝试使用 Assets 事件加载但它不工作。当我们增强 3d 模型、图像和视频时，这些 Assets 几乎是 50-60mb。所以加载 Assets 和扩充需要时间。如果网络速度较慢(在检查网络选项卡中选择 3G 慢速我们测试)，当我们增加 4-8 秒时黑屏出现并播放视频。 请编辑 My Code in Glitch
<!DOCTYPE html>
<html lang="en">
<head>
<title>Hello!</title>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<script type="text/javascript" src="https://aframe.io/releases/0.8.2/aframe.min.js"></script>
<script type="text/javascript" src="https://cdn.rawgit.com/jeromeetienne/AR.js/1.7.2/aframe/build/aframe-ar.min.js"></script>
<script type="text/javascript" src="https://cdn.rawgit.com/donmccurdy/aframe-extras/v6.0.0/dist/aframe-extras.min.js"></script>
<script src="https://unpkg.com/aframe-animation-component@5.1.2/dist/aframe-animation-component.min.js"></script>
<script>
AFRAME.registerComponent("vidhandler", {
init: function () {
// Set up initial state and variables.
this.toggle = false;
this.vid = document.querySelector("#vid");
this.vid.pause();
console.log('************* Vid Paused');
},
tick: function () {
if (this.el.object3D.visible == true) {
if (!this.toggle) {
this.toggle = true;
this.vid.play();
console.log('************* Vid Play');
}
} else {
this.toggle = false;
this.vid.pause();
//console.log('************* Vid Paused');
}
}
});
</script>
</head>
<body>
<a-scene vr-mode-ui="enabled: false" artoolkit='sourceType: webcam; detectionMode: mono; maxDetectionRate: 90;' arjs='debugUIEnabled: false;detectionMode: mono_and_matrix; matrixCodeType: 3x3;'>
<!-- ALL ASSETS -->
<a-assets>
<!-- 3D MODEL -->
<a-entity id="model" src="https://cdn.glitch.com/c3106e6c-98cb-40e4-b0c1-85257680d25a%2Fygark.glb?v=1564472468760" crossorigin="anonymous" rotation="-90 0 -90">
</a-entity>
<!-- VIDEO -->
<video preload="auto" id="vid" response-type="arraybuffer" loop="false" crossorigin webkit-playsinline playsinline controls>
<source src="https://cdn.glitch.com/c3106e6c-98cb-40e4-b0c1-85257680d25a%2Fvid.mp4?v=1564472320471" type="video/mp4">
</video>
<!-- IMAGE -->
<img id="img" src="https://cdn.glitch.com/c3106e6c-98cb-40e4-b0c1-85257680d25a%2Fsun.png?v=1564472507237">
</a-assets>
<!-- ALL ASSETS -->
<a-marker type="pattern" preset="hiro" vidhandler>
<a-entity position="0 0 0">
<a-video width="2" height="2" rotation="-90 0 0" material='transparent:true;shader:flat;side:double;src:#vid'></a-video>
</a-entity>
<a-image width="2" height="2" material='transparent:true;shader:flat;side:double;src:#img' position="2 0 0" rotation="-90 0 0"></a-image>
<a-entity position="-1.5 0 0" gltf-model="#model" material='transparent:true;shader:flat;side:double;metelness:2' rotation="0 0 0" scale="0.5 0.5 0.5" shadow="receive: false" >
</a-entity>
</a-marker>
<a-entity camera>
<a-entity cursor="rayOrigin: mouse;fuse: false;"></a-entity>
</a-entity>
</a-scene>
</body>
</html>
Assets 加载事件无效。请编辑 My Code in Glitch
提前致谢
最佳答案
有几个不同的选项。
- Aframe has a built in loading screen在
<a-scene>中启用声明
<a-scene loading-screen="dotsColor: red; backgroundColor: black"></a-scene>
- 另一种选择是按照 response from Noam Almosnino 中的步骤进行操作
- 使用类似 Aframe Preloader 的组件
Note: I am not associated with this component and have not tested it. Please see the demo page for some examples
更新
根据您的评论(下方)，我会推荐 #2 (above)
为场景的加载事件创建一个监听器
document.addEventListener('DOMContentLoaded', function() {
var scene = document.querySelector('a-scene');
scene.addEventListener('loaded', function (e) {
// hide splash screen
});
});
关于javascript - 在 Aframe AR.js 中显示一个预加载屏幕，直到所有 Assets 加载和渲染，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57267149/