ClemensFischer/XAML-Map-Control
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GeoImage implementation

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ClemensFischer 2024-09-02 15:49:53 +02:00
parent 07849eb1d8
commit 3468940ebf
6 changed files with 87 additions and 110 deletions
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40
MapControl/WinUI/GeoImage.WinUI.cs
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@ -6,42 +6,22 @@ using System;
using System.Threading.Tasks;
using Windows.Graphics.Imaging;
using Windows.Storage;
#if UWP
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;
#else
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using Microsoft.UI.Xaml.Media;
#endif
namespace MapControl
{
public partial class GeoImage : Grid
public partial class GeoImage
{
private void SetImage(ImageSource image)
{
Children.Clear();
Children.Add(new Image
{
Source = image,
Stretch = Stretch.Fill,
HorizontalAlignment = HorizontalAlignment.Stretch,
VerticalAlignment = VerticalAlignment.Stretch
});
}
private Point BitmapSize => new Point(bitmapSource.PixelWidth, bitmapSource.PixelHeight);
private static async Task<GeoBitmap> ReadGeoTiffAsync(string sourcePath)
private async Task LoadGeoTiffAsync(string sourcePath)
{
var file = await StorageFile.GetFileFromPathAsync(FilePath.GetFullPath(sourcePath));
using (var stream = await file.OpenReadAsync())
{
var geoBitmap = new GeoBitmap();
var decoder = await BitmapDecoder.CreateAsync(stream);
geoBitmap.Bitmap = await ImageLoader.LoadImageAsync(decoder);
bitmapSource = await ImageLoader.LoadImageAsync(decoder);
var geoKeyDirectoryQuery = QueryString(GeoKeyDirectoryTag);
var pixelScaleQuery = QueryString(ModelPixelScaleTag);
@ -63,15 +43,15 @@ namespace MapControl
tiePointValue.Value is double[] tiePoint &&
tiePoint.Length >= 6)
{
geoBitmap.Transform = new Matrix(pixelScale[0], 0d, 0d, -pixelScale[1], tiePoint[3], tiePoint[4]);
transformMatrix = new Matrix(pixelScale[0], 0d, 0d, -pixelScale[1], tiePoint[3], tiePoint[4]);
}
else if (metadata.TryGetValue(transformationQuery, out BitmapTypedValue transformValue) &&
transformValue.Value is double[] transformValues &&
transformValues.Length == 16)
{
geoBitmap.Transform = new Matrix(transformValues[0], transformValues[1],
transformValues[4], transformValues[5],
transformValues[3], transformValues[7]);
transformMatrix = new Matrix(transformValues[0], transformValues[1],
transformValues[4], transformValues[5],
transformValues[3], transformValues[7]);
}
else
{
@ -81,10 +61,8 @@ namespace MapControl
if (metadata.TryGetValue(geoKeyDirectoryQuery, out BitmapTypedValue geoKeyDirValue) &&
geoKeyDirValue.Value is short[] geoKeyDirectory)
{
geoBitmap.Projection = GetProjection(geoKeyDirectory);
SetProjection(geoKeyDirectory);
}
return geoBitmap;
}
}
}