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Put in some try catch code to prevent failing to read a mesh while writing it.

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This commit is contained in:
Lars Brubaker 2015-09-08 13:56:22 -07:00
parent 39e3d08f35
commit 66ee409c8c
3 changed files with 60 additions and 47 deletions
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42
AboutPage/HTMLParser/ImageWidget_AsyncLoadOnDraw.cs
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@ -82,27 +82,33 @@ namespace MatterHackers.MatterControl
void client_DownloadDataCompleted(object sender, DownloadDataCompletedEventArgs e)
{
byte[] raw = e.Result;
Stream stream = new MemoryStream(raw);
ImageBuffer unScaledImage = new ImageBuffer(10, 10, 32, new BlenderBGRA());
StaticData.Instance.LoadImageData(stream, unScaledImage);
// If the source image (the one we downloaded) is more than twice as big as our dest image.
while (unScaledImage.Width > Image.Width * 2)
try // if we get a bad result we can get a target ivocation exception. In that case just don't show anything
{
// The image sampler we use is a 2x2 filter so we need to scale by a max of 1/2 if we want to get good results.
// So we scale as many times as we need to to get the Image to be the right size.
// If this were going to be a non-uniform scale we could do the x and y separatly to get better results.
ImageBuffer halfImage = new ImageBuffer(unScaledImage.Width / 2, unScaledImage.Height / 2, 32, scalingBlender);
halfImage.NewGraphics2D().Render(unScaledImage, 0, 0, 0, halfImage.Width / (double)unScaledImage.Width, halfImage.Height / (double)unScaledImage.Height);
unScaledImage = halfImage;
}
Image.NewGraphics2D().Render(unScaledImage, 0, 0, 0, Image.Width / (double)unScaledImage.Width, Image.Height / (double)unScaledImage.Height);
Image.MarkImageChanged();
Invalidate();
byte[] raw = e.Result;
Stream stream = new MemoryStream(raw);
ImageBuffer unScaledImage = new ImageBuffer(10, 10, 32, new BlenderBGRA());
StaticData.Instance.LoadImageData(stream, unScaledImage);
// If the source image (the one we downloaded) is more than twice as big as our dest image.
while (unScaledImage.Width > Image.Width * 2)
{
// The image sampler we use is a 2x2 filter so we need to scale by a max of 1/2 if we want to get good results.
// So we scale as many times as we need to to get the Image to be the right size.
// If this were going to be a non-uniform scale we could do the x and y separatly to get better results.
ImageBuffer halfImage = new ImageBuffer(unScaledImage.Width / 2, unScaledImage.Height / 2, 32, scalingBlender);
halfImage.NewGraphics2D().Render(unScaledImage, 0, 0, 0, halfImage.Width / (double)unScaledImage.Width, halfImage.Height / (double)unScaledImage.Height);
unScaledImage = halfImage;
}
Image.NewGraphics2D().Render(unScaledImage, 0, 0, 0, Image.Width / (double)unScaledImage.Width, Image.Height / (double)unScaledImage.Height);
Image.MarkImageChanged();
Invalidate();
if (LoadComplete != null)
if (LoadComplete != null)
{
LoadComplete(this, null);
}
}
catch (Exception)
{
LoadComplete(this, null);
}
}
}