Change DPI to 96 (#1781)

Author: Ruben2776

src/Magick.NET.AvaloniaMediaImaging/IMagickImageExtentions.cs

@@ -15,16 +15,34 @@ namespace ImageMagick;
 public static partial class IMagickImageExtentions
 {
     /// <summary>
-    /// Converts this instance to a <see cref="WriteableBitmap"/>.
+    /// Converts this instance to a <see cref="WriteableBitmap"/> with a default DPI of 96x96.
     /// </summary>
     /// <param name="self">The image.</param>
     /// <typeparam name="TQuantumType">The quantum type.</typeparam>
     /// <returns>A <see cref="WriteableBitmap"/>.</returns>
     public static unsafe WriteableBitmap ToWriteableBitmap<TQuantumType>(this IMagickImage<TQuantumType> self)
         where TQuantumType : struct, IConvertible
+    {
+        return self.ToWriteableBitmapInternal(false);
+    }
+    
+    /// <summary>
+    /// Converts this instance to a <see cref="WriteableBitmap"/>.
+    /// </summary>
+    /// <param name="self">The image.</param>
+    /// <typeparam name="TQuantumType">The quantum type.</typeparam>
+    /// <returns>A <see cref="WriteableBitmap"/>.</returns>
+    public static unsafe WriteableBitmap ToWriteableBitmapWithDensity<TQuantumType>(this IMagickImage<TQuantumType> self)
+        where TQuantumType : struct, IConvertible
+    {
+        return self.ToWriteableBitmapInternal(true);
+    }
+
+    private static unsafe WriteableBitmap ToWriteableBitmapInternal<TQuantumType>(this IMagickImage<TQuantumType> self, bool withDensity)
+        where TQuantumType : struct, IConvertible
     {
         var size = new PixelSize((int)self.Width, (int)self.Height);
-        var density = new Vector(self.Density.X, self.Density.Y);
+        var density = withDensity ? new Vector(self.Density.X, self.Density.Y) : new Vector(96, 96);
         var bitmap = new WriteableBitmap(size, density, PixelFormats.Rgba8888, AlphaFormat.Unpremul);
 
         using var framebuffer = bitmap.Lock();