Similar to you SfPopupLayout which has a ShowRelativeToView, it would be very useful to be able to create a radial menu and then display it near some view or at a specific location.
Considering the expected use, as in your samples where you show Font Styles, the user would tap on a word and I would want to show the menu near the word.
The requested position should be overridden if the menu would fall outside the screen or it would obscure the targeted item.
I currently have managed to achieve this functionality by placing my Page Content inside an AbsoluteLayout and placing the RadialMenu as a child of the AbsoluteLayout.
I can then position it by calling AbsoluteLayout.SetLayoutBounds(menu, new Rectangle(…))
This works well for my app but is far from ideal for obvious reasons.
Considering that you have managed to do something similar with you SfPopupLayout, it would be nice to have the same functionality in a RadialMenu.