[英]How to load extensions for the Forge Viewer (without a viewerApp)
[英]Extensions do not load after the second time in Forge Viewer
我使用 Reactjs 开发 Forge Viewer。
当我在 Forge Viewer 中显示绘图时,扩展不会在第二次之后加载。
未加载的扩展。
Autodesk.ViewCubeUi.
Autodesk.BimWalk.
Autodesk.Measure.
Autodesk.Section.
Autodesk.LayerManager.
在当前实现中,每次绘图文件更改时都会重新加载查看器脚本。
我用参考实现了这个脚本。
https://github.com/outer-labs/react-forge-viewer
我应该如何解决这个问题?
错误日志(这是 ViewCubeUi 错误,但也有其他扩展。)
Uncaught (in promise) Error: Extension not found: Autodesk.ViewCubeUi. Has it been registered(3)?
at VM26450 viewer3D.min.js:19
(anonymous) @ viewer3D.min.js?v=v7.18:19
Promise.then (async)
loadExtension @ viewer3D.min.js?v=v7.18:19
(anonymous) @ viewer3D.min.js?v=v7.18:24
setTimeout (async)
T.createUI @ viewer3D.min.js?v=v7.18:24
(anonymous) @ viewer3D.min.js?v=v7.18:24
(anonymous) @ viewer3D.min.js?v=v7.18:24
setTimeout (async)
(anonymous) @ viewer3D.min.js?v=v7.18:24
p @ viewer3D.min.js?v=v7.18:19
(anonymous) @ viewer3D.min.js?v=v7.18:24
l @ viewer3D.min.js?v=v7.18:24
(anonymous) @ viewer3D.min.js?v=v7.18:24
forEach.e.<computed> @ viewer3D.min.js?v=v7.18:24
x @ viewer3D.min.js?v=v7.18:24
a @ viewer3D.min.js?v=v7.18:24
Promise.then (async)
x @ viewer3D.min.js?v=v7.18:24
a @ viewer3D.min.js?v=v7.18:24
(anonymous) @ viewer3D.min.js?v=v7.18:24
(anonymous) @ viewer3D.min.js?v=v7.18:24
(anonymous) @ viewer3D.min.js?v=v7.18:24
i @ viewer3D.min.js?v=v7.18:19
查看器脚本加载如下。 <ForgeViewer />
组件显示绘图并处理查看器事件。
const version = "7.18"
const cssUrl = `https://developer.api.autodesk.com/modelderivative/v2/viewers/style.min.css?v=v${version}`
const scriptUrl = `https://developer.api.autodesk.com/modelderivative/v2/viewers/viewer3D.min.js?v=v${version}`
import React, {useState, useEffect} from 'react'
interface ScriptLoaderProps {
url: string
onLoad?: () => void
onError?: () => void
}
const ScriptLoader: React.FC<ScriptLoaderProps> = ({url, onLoad, onError, children}) => {
const [ready, setReady] = useState(false)
useEffect(() => {
const script = document.createElement('script')
script.src = url
script.async = true
script.onload = () => {
setReady(true)
if(onLoad) onLoad()
}
if(onError) script.onerror = onError
document.body.appendChild(script)
return () => {
document.body.removeChild(script)
}
}, [url])
if(ready) return <>{children}</>
return <></>
}
const Viewer = () => {
return(
<>
<link rel="stylesheet" type="text/css" href={cssUrl} />
<ScriptLoader url={scriptUrl}>
<ForgeViewer />
</ScriptLoader>
</>
)
}
尽量不要重新加载 Viewer 脚本,否则您可能会遇到奇怪的冲突(或者更准确地说,根据我们的工程,这是一个深层的赛车条件)加载扩展和一些其他依赖项......
从早期的 v7 版本开始就存在此问题...
想出自己的查看器组件并在此处查看示例实际上非常简单 - 在处理多个组件并重新加载时,只需使用 state 控制机制(redux 等)来检查库是否已加载/正在加载以避免冲突。 ..
或者您可以自定义此组件(我们不完全支持,因为它是第 3 方)以在尝试加载脚本之前检查window.Autodesk
是否已经可用...
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