Mouse restriction in circle

[Anzar]

I want to restrict mouse movement in Circle drawn using Ellipse in WPF. I can restrict mouse movement using ClipCursor function but it takes rect param. How it can be achieved to restrict movement in Circle? Please suggest any solution I need to implement this in my project using WPF.

 

[CodeJedi]

Can you share what you have tried so far?

 

[Anzar]

Thnx for replying. I have solved this with use of mathematics.