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ClemensFischer 2026-04-13 17:14:49 +02:00
parent c14377f976
commit 65aba44af6
152 changed files with 11962 additions and 12115 deletions
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113
MapControl/WinUI/GeoImage.WinUI.cs
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@ -8,66 +8,65 @@ using Windows.UI.Xaml.Media.Imaging;
using Microsoft.UI.Xaml.Media.Imaging;
#endif
namespace MapControl
namespace MapControl;
public static partial class GeoImage
{
public static partial class GeoImage
private static async Task<GeoBitmap> LoadGeoTiff(string sourcePath)
{
private static async Task<GeoBitmap> LoadGeoTiff(string sourcePath)
BitmapSource bitmap;
Matrix transform;
MapProjection projection = null;
var file = await StorageFile.GetFileFromPathAsync(FilePath.GetFullPath(sourcePath));
using var stream = await file.OpenReadAsync();
var decoder = await BitmapDecoder.CreateAsync(stream);
bitmap = await ImageLoader.LoadWriteableBitmapAsync(decoder);
var geoKeyDirectoryQuery = QueryString(GeoKeyDirectoryTag);
var pixelScaleQuery = QueryString(ModelPixelScaleTag);
var tiePointQuery = QueryString(ModelTiePointTag);
var transformationQuery = QueryString(ModelTransformationTag);
var metadata = await decoder.BitmapProperties.GetPropertiesAsync(
new string[]
{
pixelScaleQuery,
tiePointQuery,
transformationQuery,
geoKeyDirectoryQuery
});
if (metadata.TryGetValue(pixelScaleQuery, out BitmapTypedValue pixelScaleValue) &&
pixelScaleValue.Value is double[] pixelScale &&
pixelScale.Length == 3 &&
metadata.TryGetValue(tiePointQuery, out BitmapTypedValue tiePointValue) &&
tiePointValue.Value is double[] tiePoint &&
tiePoint.Length >= 6)
{
BitmapSource bitmap;
Matrix transform;
MapProjection projection = null;
var file = await StorageFile.GetFileFromPathAsync(FilePath.GetFullPath(sourcePath));
using var stream = await file.OpenReadAsync();
var decoder = await BitmapDecoder.CreateAsync(stream);
bitmap = await ImageLoader.LoadWriteableBitmapAsync(decoder);
var geoKeyDirectoryQuery = QueryString(GeoKeyDirectoryTag);
var pixelScaleQuery = QueryString(ModelPixelScaleTag);
var tiePointQuery = QueryString(ModelTiePointTag);
var transformationQuery = QueryString(ModelTransformationTag);
var metadata = await decoder.BitmapProperties.GetPropertiesAsync(
new string[]
{
pixelScaleQuery,
tiePointQuery,
transformationQuery,
geoKeyDirectoryQuery
});
if (metadata.TryGetValue(pixelScaleQuery, out BitmapTypedValue pixelScaleValue) &&
pixelScaleValue.Value is double[] pixelScale &&
pixelScale.Length == 3 &&
metadata.TryGetValue(tiePointQuery, out BitmapTypedValue tiePointValue) &&
tiePointValue.Value is double[] tiePoint &&
tiePoint.Length >= 6)
{
transform = 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)
{
transform = new Matrix(transformValues[0], transformValues[1],
transformValues[4], transformValues[5],
transformValues[3], transformValues[7]);
}
else
{
throw new ArgumentException("No coordinate transformation found.");
}
if (metadata.TryGetValue(geoKeyDirectoryQuery, out BitmapTypedValue geoKeyDirValue) &&
geoKeyDirValue.Value is short[] geoKeyDirectory)
{
projection = GetProjection(geoKeyDirectory);
}
return new GeoBitmap(bitmap, transform, projection);
transform = 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)
{
transform = new Matrix(transformValues[0], transformValues[1],
transformValues[4], transformValues[5],
transformValues[3], transformValues[7]);
}
else
{
throw new ArgumentException("No coordinate transformation found.");
}
if (metadata.TryGetValue(geoKeyDirectoryQuery, out BitmapTypedValue geoKeyDirValue) &&
geoKeyDirValue.Value is short[] geoKeyDirectory)
{
projection = GetProjection(geoKeyDirectory);
}
return new GeoBitmap(bitmap, transform, projection);
}
}