ClemensFischer/XAML-Map-Control
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ImageLoader

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This commit is contained in:
ClemensFischer 2025-01-01 19:45:40 +01:00
parent 560f44a139
commit 069072ce34
6 changed files with 73 additions and 71 deletions
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36
MapControl/WinUI/ImageLoader.WinUI.cs
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@ -72,13 +72,15 @@ namespace MapControl
internal static async Task<WriteableBitmap> LoadWriteableBitmapAsync(Uri uri)
{
WriteableBitmap image = null;
WriteableBitmap bitmap = null;
try
{
using (var stream = await RandomAccessStreamReference.CreateFromUri(uri).OpenReadAsync())
{
image = await LoadWriteableBitmapAsync(await BitmapDecoder.CreateAsync(stream));
var decoder = await BitmapDecoder.CreateAsync(stream);
bitmap = await LoadWriteableBitmapAsync(decoder);
}
}
catch (Exception ex)
@ -86,32 +88,32 @@ namespace MapControl
Debug.WriteLine($"{nameof(ImageLoader)}: {uri}: {ex.Message}");
}
return image;
return bitmap;
}
internal static async Task<ImageSource> LoadMergedImageAsync(Uri uri1, Uri uri2, IProgress<double> progress)
{
WriteableBitmap mergedImage = null;
WriteableBitmap mergedBitmap = null;
progress?.Report(0d);
var images = await Task.WhenAll(LoadWriteableBitmapAsync(uri1), LoadWriteableBitmapAsync(uri2));
var bitmaps = await Task.WhenAll(LoadWriteableBitmapAsync(uri1), LoadWriteableBitmapAsync(uri2));
if (images.Length == 2 &&
images[0] != null &&
images[1] != null &&
images[0].PixelHeight == images[1].PixelHeight)
if (bitmaps.Length == 2 &&
bitmaps[0] != null &&
bitmaps[1] != null &&
bitmaps[0].PixelHeight == bitmaps[1].PixelHeight)
{
var buffer1 = images[0].PixelBuffer;
var buffer2 = images[1].PixelBuffer;
var stride1 = (uint)images[0].PixelWidth * 4;
var stride2 = (uint)images[1].PixelWidth * 4;
var buffer1 = bitmaps[0].PixelBuffer;
var buffer2 = bitmaps[1].PixelBuffer;
var stride1 = (uint)bitmaps[0].PixelWidth * 4;
var stride2 = (uint)bitmaps[1].PixelWidth * 4;
var stride = stride1 + stride2;
var height = images[0].PixelHeight;
var height = bitmaps[0].PixelHeight;
mergedImage = new WriteableBitmap(images[0].PixelWidth + images[1].PixelWidth, height);
mergedBitmap = new WriteableBitmap(bitmaps[0].PixelWidth + bitmaps[1].PixelWidth, height);
var buffer = mergedImage.PixelBuffer;
var buffer = mergedBitmap.PixelBuffer;
for (uint y = 0; y < height; y++)
{
@ -122,7 +124,7 @@ namespace MapControl
progress?.Report(1d);
return mergedImage;
return mergedBitmap;
}
}
}