public static void PositionRaster(UIElement renderedGeometry, BoundingBox boundingBox, IReadOnlyViewport viewport)
{
UpdateRenderTransform(renderedGeometry, viewport);
// since the render transform will take care of the rotation, calculate top-left using unrotated viewport
var topLeft = viewport.WorldToScreenUnrotated(boundingBox.TopLeft);
var rectWidthPixels = boundingBox.Width / viewport.Resolution;
var rectHeightPixels = boundingBox.Height / viewport.Resolution;
((XamlMedia.RectangleGeometry)((XamlShapes.Path)renderedGeometry).Data).Rect =
RoundToPixel(new Rect(topLeft.X, topLeft.Y, rectWidthPixels, rectHeightPixels));
}
