/// <summary>
/// Transforms a rectangle from the local space of the element to the world space.
/// </summary>
/// <remarks>
/// This element needs to be attached to a panel and must receive a valid <see cref="VisualElement.layout"/>.
/// Otherwise, this method may return invalid results.
/// </remarks>
/// <param name="ele">The element to use as a reference for the local space.</param>
/// <param name="r">The rectangle to transform, in local space.</param>
/// <returns>A rectangle in the world space.</returns>
public static Rect LocalToWorld(this VisualElement ele, Rect r)
{
if (ele == null)
{
throw new ArgumentNullException(nameof(ele));
}
return(VisualElement.CalculateConservativeRect(ref ele.worldTransformRef, r));
}