/// <summary>
/// Fixes 3D printing file stream.
/// </summary>
/// <param name="inputStream">The input file to be fixed as a Stream object.</param>
/// <returns>The fixed file as a Stream.</returns>
public async Task <Stream> FixAsync(Stream inputStream)
{
InputStream = inputStream;
// 1. LoadModelFromPackageAsync accepts IRandomAccessStream and uses stream cloning internally
// 2. WindowsRuntimeStreamExtensions.AsRandomStream converts Stream to IRandomAccessStream, but the resulting stream doesn't support cloning
// 3. InMemoryRandomAccessStream does support cloning. So we needed a way to go from Stream to InMemoryRandomAccessStream
// 4. Solution: Copy Stream to MemoryStream. Write to InMemoryRandomAccessStream via WriteAsync, which accepts IBuffer
// To get IBuffer, we first need to get the memoryStream Bytes with ToArray() and then get IBuffer using the
// System.Runtime.InteropServices.WindowsRuntime AsBuffer90 extension method.
// We then pass the InMemoryRandomAccessStream object to LoadModelFromPackageAsync.
using var memoryStream = new MemoryStream();
await InputStream.CopyToAsync(memoryStream);
using InMemoryRandomAccessStream memoryRandomAccessStream = new InMemoryRandomAccessStream();
await memoryRandomAccessStream.WriteAsync(memoryStream.ToArray().AsBuffer());
var package = new Printing3D3MFPackage();
var model = await package.LoadModelFromPackageAsync(memoryRandomAccessStream);
await model.RepairAsync();
await package.SaveModelToPackageAsync(model);
return(WindowsRuntimeStreamExtensions.AsStream(await package.SaveAsync()));
}
// </SnippetFileCheck>
// <SnippetRepairModel>
private async void OnFixClick(object sender, RoutedEventArgs e)
{
// read the loaded file's data as a data stream
IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.Read);
// assign a Printing3DModel to this data stream
Printing3DModel model = await package.LoadModelFromPackageAsync(fileStream);
// use Printing3DModel's repair function
OutputTextBlock.Text = "repairing model";
var data = model.RepairAsync();
// </SnippetRepairModel>
// <SnippetSaveModel>
// save model to this class' Printing3D3MFPackage
OutputTextBlock.Text = "saving model to 3MF package";
await package.SaveModelToPackageAsync(model);
}
/// <summary>
/// Fixes 3D printing inputFile and returns path to fixed file.
/// </summary>
/// <param name="inputFile">The absolute path to the file to be fixed.</param>
/// <param name="outputFile">The absolute path to the output fixed file. Defaults to appending '_fixed' to the InputFile file name.</param>
/// <returns>The absolute path to the fixed file.</returns>
public async Task <string> FixAsync(string inputFile, string outputFile = "")
{
InputFile = inputFile;
OutputFile = outputFile;
var package = new Printing3D3MFPackage();
using var stream = await FileRandomAccessStream.OpenAsync(InputFile, FileAccessMode.ReadWrite);
var model = await package.LoadModelFromPackageAsync(stream);
await model.RepairAsync();
await package.SaveModelToPackageAsync(model);
using var outstream = WindowsRuntimeStreamExtensions.AsStream(await package.SaveAsync());
using var outfile = File.Create(OutputFile);
outstream.Seek(0, SeekOrigin.Begin);
outstream.CopyTo(outfile);
return(OutputFile);
}
private async void LoadPackageFromFile()
{
rootPage.NotifyUser("", NotifyType.StatusMessage);
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.DocumentsLibrary;
openPicker.FileTypeFilter.Add(".3mf");
StorageFile file = await openPicker.PickSingleFileAsync();
if (file == null)
{
return;
}
rootPage.NotifyUser("Loading...", NotifyType.StatusMessage);
var package = new Printing3D3MFPackage();
using (var fileStream = await file.OpenAsync(FileAccessMode.Read))
{
var model = await package.LoadModelFromPackageAsync(fileStream);
rootPage.NotifyUser("Repairing...", NotifyType.StatusMessage);
await model.RepairAsync();
rootPage.NotifyUser("Saving...", NotifyType.StatusMessage);
await package.SaveModelToPackageAsync(model);
await FixTextureContentTypeAsync(package);
}
currentPackage = package;
rootPage.NotifyUser("Package created from file.", NotifyType.StatusMessage);
EnablePackageOperationButtons();
}
private async void LoadPackageFromFile()
{
rootPage.NotifyUser("", NotifyType.StatusMessage);
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.DocumentsLibrary;
openPicker.FileTypeFilter.Add(".3mf");
StorageFile file = await openPicker.PickSingleFileAsync();
if (file == null)
{
return;
}
rootPage.NotifyUser("Loading...", NotifyType.StatusMessage);
var package = new Printing3D3MFPackage();
using (var fileStream = await file.OpenAsync(FileAccessMode.Read))
{
var model = await package.LoadModelFromPackageAsync(fileStream);
rootPage.NotifyUser("Repairing...", NotifyType.StatusMessage);
await model.RepairAsync();
rootPage.NotifyUser("Saving...", NotifyType.StatusMessage);
await package.SaveModelToPackageAsync(model);
await FixTextureContentTypeAsync(package);
}
currentPackage = package;
rootPage.NotifyUser("Package created from file.", NotifyType.StatusMessage);
EnablePackageOperationButtons();
}