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[STLThumbnail]Fix crashes on invalid files (#29172)

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* [StlThumbnailProvider] STL reader is added to try catch block. Model checks are increased.

* [StlThumbnailProvider] Spellcheck fix
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gokcekantarci 2023-10-17 19:53:20 +03:00 committed by GitHub
parent 413624397e
commit ec47805634
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1 changed files with 50 additions and 45 deletions
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95
src/modules/previewpane/StlThumbnailProvider/StlThumbnailProvider.cs
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@ -2,11 +2,9 @@
// The Microsoft Corporation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.IO;
using System.Runtime.InteropServices.ComTypes;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Media3D;
using Common.Utilities;
using HelixToolkit.Wpf;
using Microsoft.PowerToys.Settings.UI.Library;
using Bitmap = System.Drawing.Bitmap;
@ -61,54 +59,61 @@ namespace Microsoft.PowerToys.ThumbnailHandler.Stl
DefaultMaterial = new DiffuseMaterial(new SolidColorBrush(DefaultMaterialColor)),
};
var model = stlReader.Read(stream);
try
{
var model = stlReader.Read(stream);
if (model.Bounds == Rect3D.Empty)
if (model == null || model.Children.Count == 0 || model.Bounds == Rect3D.Empty)
{
return null;
}
var viewport = new System.Windows.Controls.Viewport3D();
viewport.Measure(new System.Windows.Size(cx, cx));
viewport.Arrange(new Rect(0, 0, cx, cx));
var modelVisual = new ModelVisual3D()
{
Transform = new RotateTransform3D(new AxisAngleRotation3D(new Vector3D(0, 0, 1), 180)),
};
viewport.Children.Add(modelVisual);
viewport.Children.Add(new DefaultLights());
var perspectiveCamera = new PerspectiveCamera
{
Position = new Point3D(1, 2, 1),
LookDirection = new Vector3D(-1, -2, -1),
UpDirection = new Vector3D(0, 0, 1),
FieldOfView = 20,
NearPlaneDistance = 0.1,
FarPlaneDistance = double.PositiveInfinity,
};
viewport.Camera = perspectiveCamera;
modelVisual.Content = model;
perspectiveCamera.ZoomExtents(viewport);
var bitmapExporter = new BitmapExporter
{
Background = new SolidColorBrush(Colors.Transparent),
OversamplingMultiplier = 1,
};
var bitmapStream = new MemoryStream();
bitmapExporter.Export(viewport, bitmapStream);
bitmapStream.Position = 0;
thumbnail = new Bitmap(bitmapStream);
}
catch (Exception)
{
return null;
}
var viewport = new System.Windows.Controls.Viewport3D();
viewport.Measure(new System.Windows.Size(cx, cx));
viewport.Arrange(new Rect(0, 0, cx, cx));
var modelVisual = new ModelVisual3D()
{
Transform = new RotateTransform3D(new AxisAngleRotation3D(new Vector3D(0, 0, 1), 180)),
};
viewport.Children.Add(modelVisual);
viewport.Children.Add(new DefaultLights());
var perspectiveCamera = new PerspectiveCamera
{
Position = new Point3D(1, 2, 1),
LookDirection = new Vector3D(-1, -2, -1),
UpDirection = new Vector3D(0, 0, 1),
FieldOfView = 20,
NearPlaneDistance = 0.1,
FarPlaneDistance = double.PositiveInfinity,
};
viewport.Camera = perspectiveCamera;
modelVisual.Content = model;
perspectiveCamera.ZoomExtents(viewport);
var bitmapExporter = new BitmapExporter
{
Background = new SolidColorBrush(Colors.Transparent),
OversamplingMultiplier = 1,
};
var bitmapStream = new MemoryStream();
bitmapExporter.Export(viewport, bitmapStream);
bitmapStream.Position = 0;
thumbnail = new Bitmap(bitmapStream);
return thumbnail;
}