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Update ImageLoader.WinUI.cs

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ClemensFischer 2023-08-18 09:07:18 +02:00
parent f4a7c3fbdf
commit 2094facc5e
1 changed files with 12 additions and 13 deletions
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25
MapControl/WinUI/ImageLoader.WinUI.cs
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@ -99,22 +99,21 @@ namespace MapControl
images[1] is WriteableBitmap image2 && images[1] is WriteableBitmap image2 &&
image1.PixelHeight == image2.PixelHeight) image1.PixelHeight == image2.PixelHeight)
{ {
var width = image1.PixelWidth + image2.PixelWidth; var buffer1 = image1.PixelBuffer;
var height = image2.PixelHeight; var buffer2 = image2.PixelBuffer;
var stride1 = image1.PixelWidth * 4; var stride1 = (uint)image1.PixelWidth * 4;
var stride2 = image2.PixelWidth * 4; var stride2 = (uint)image2.PixelWidth * 4;
var buffer1 = image1.PixelBuffer.ToArray(); var stride = stride1 + stride2;
var buffer2 = image2.PixelBuffer.ToArray(); var height = image1.PixelHeight;
image = new WriteableBitmap(width, height); image = new WriteableBitmap(image1.PixelWidth + image2.PixelWidth, height);
using (var pixelStream = image.PixelBuffer.AsStream()) var buffer = image.PixelBuffer;
for (uint y = 0; y < height; y++)
{ {
for (var y = 0; y < height; y++) buffer1.CopyTo(y * stride1, buffer, y * stride, stride1);
{ buffer2.CopyTo(y * stride2, buffer, y * stride + stride1, stride2);
await pixelStream.WriteAsync(buffer1, y * stride1, stride1);
await pixelStream.WriteAsync(buffer2, y * stride2, stride2);
}
} }
} }