Android:如何在 filament 中从远程 URL 加载 GLTF 或 GLB 文件

Android: How to load a GLTF or GLB file from remote URL in filament

我正在尝试将远程资产(.glb 或 .gltf)加载到 filament 中的 ModelViewerGoogle Filament sample-gltf-viewer shows a RemoteServer object but I'm not seeing how I can load a remote asset from a URL (e.g. https://github.com/kelvinwatson/glb-files/raw/main/DamagedHelmet.glb)

我已尝试以下操作,但出现“无法解析 glb 文件”。

RemoteServer 的代码没有指明我们可以在何处传递 URL。

val glbUrl = "<URL TO YOUR GLB ASSET>"

private fun loadGlbRemote() {
    lifecycleScope.launch {
        withContext(Dispatchers.IO) {
        val url = URL(glbUrl)
        val connection = url.openConnection()
        connection.connect()
        val inputStream: InputStream = BufferedInputStream(url.openStream())
        val len = connection.contentLength
        val byteArray = ByteArray(len)
        inputStream.read(byteArray, 0, byteArray.size)
        val byteBuffer = ByteBuffer.wrap(byteArray)
        modelViewer.loadModelGlb(byteBuffer)
        inputStream.close()
    }
implementation 'com.google.android.filament:filament-android:1.7.0'
implementation 'com.google.android.filament:filament-utils-android:1.7.0'
implementation 'com.google.android.filament:gltfio-android:1.7.0'`

如有任何帮助,我们将不胜感激。

问题已解决。问题是我没有完全下载文件,需要在主线程上调用 modelViewer.loadModelGlb

这是工作代码:

val glbUrl = "<URL TO YOUR GLB ASSET>"
URL(glbUrl).openStream().use { inputStream: InputStream ->
    val inputStream = BufferedInputStream(inputStream)
    ByteArrayOutputStream().use {  output->
        inputStream.copyTo(output)
        val byteArr = output.toByteArray()
        val byteBuffer = ByteBuffer.wrap(byteArr)
        val rewound = byteBuffer.rewind()
        withContext(Dispatchers.Main) {
            modelViewer.destroyModel()
            modelViewer.loadModelGlb(rewound)
            modelViewer.transformToUnitCube()

解决方案已包含在已提交的问题中:https://github.com/google/filament/issues/5255