public CustomLayerOverlay(GeoImage backgroundImage = null)
{
BackgroundImage = backgroundImage;
if (BackgroundImage != null)
{
// set the background image as a control of this overlay
var wpfBitmap = new BitmapImage();
wpfBitmap.BeginInit();
wpfBitmap.StreamSource = BackgroundImage.GetImageStream();
wpfBitmap.EndInit();
var imageControl = new Image()
{
Source = wpfBitmap
};
imageControl.SetValue(Panel.ZIndexProperty, -100);
OverlayCanvas.Children.Add(imageControl);
}
}
public static Stream GetImageStream(this GeoImage image, GeoCanvas geoCanvas)
{
return(image.GetImageStream());
}