/**
* Downloads a file to a local path, then loads the file
*/
private IEnumerator DownloadFile(ModelDataTemplate.ModelImportData modelData, Text progressDisplay, int index, string localPathAndFilename, System.Action <ModelFile> callback = null)
{
UnityWebRequest fileDownloader = UnityWebRequest.Get(modelData.url);
//get size of model first to allocate what is needed
long modelSize = 0;
yield return(StartCoroutine(GetFileSize(modelData.url, (size) =>
{
modelSize = size;
})
));
//set our model download settings
fileDownloader.method = UnityWebRequest.kHttpVerbGET;
using (var dh = new DownloadHandlerFile(localPathAndFilename))
{
dh.removeFileOnAbort = true;
fileDownloader.downloadHandler = dh;
fileDownloader.SendWebRequest();
while (!fileDownloader.isDone)
{
string stats = WebGLMemoryStats.GetMoreStats("Downloading");
progressDisplay.text = $"Downloading {modelData.name}: {fileDownloader.downloadProgress.ToString("P")}\n{stats}";
yield return(null);
}
}
System.GC.Collect();
//Debug.Log($"Successfully downloaded model {modelData.name}, size {fileDownloader.downloadedBytes} bytes.");
if (fileDownloader.result == UnityWebRequest.Result.ConnectionError || fileDownloader.result == UnityWebRequest.Result.ProtocolError)
{
Debug.LogError(fileDownloader.error);
}
//Debug.Log($"Successfully downloaded asset {assetData.name}, size {fileDownloader.downloadedBytes} bytes.");
ulong downloadedSize = fileDownloader.downloadedBytes;
fileDownloader = null;
callback(new ModelFile(localPathAndFilename, modelData.name, downloadedSize));
}
/**
* Creates a directory to store the model in and then passes model data onto a download coroutine.
*/
public IEnumerator GetFileFromURL(ModelDataTemplate.ModelImportData modelData, Text progressDisplay, int index, System.Action <ModelFile> callback)
{
//Gets guid and filename and extension
string[] modelParams = getModelParameters(modelData.url);
var guid = modelParams[0];
var fileNameAndExtension = modelParams[1];
//Create a unique directory based on the guid
var modelDirectoryLocation = $"{Application.persistentDataPath}/{guid}";
//Debug.Log($"Storing model at {modelDirectoryLocation}");
Directory.CreateDirectory(modelDirectoryLocation);
var modelFileLocation = $"{modelDirectoryLocation}/{fileNameAndExtension}";
if (!File.Exists(modelFileLocation))
{
Debug.Log($"Downloading {modelData.name}");
yield return(StartCoroutine(DownloadFile(modelData, progressDisplay, index, modelFileLocation, callback)));
yield break;
}
Debug.Log($"{modelData.name} cached. Loading immediately.");
progressDisplay.text = $"{modelData.name} cached. Loading immediately.";
FileInfo modelInfo = new FileInfo(modelFileLocation);
ulong modelSize = (ulong)modelInfo.Length;
callback(new ModelFile(modelFileLocation, modelData.name, modelSize));
//TryLoadLocalFile(, callback); //TODO remove
}
