well you can mask the image in a material so that only the red circle appears, that wouldn’t fix you’re hovering problem of wanting to only be able to interact with the red circle. kind of a cheap fix is you can determine the exact center of the circle, get the mouse position in 2d space and check to see if it is within bounds of the circle i.e. if the circle is 250 pixels in radius you can get the exact center position in 2d space and save it in a variable, then run a function that will get the mouse position in 2d space subtract the centers Y(base) and X(height) positions from the cursors y and x positions, get the absolute values, square them, add them, then find the square root of that value(hypotenuse) then compare if it is less than or equal to 250, if it is continue with running the function