Hello all, long time viewer here, first time poster!

Do you guy and gals know of any extension that allows me to do the following:

Image drawing out columns for a building and then taking the circle tool and as you extend the circle past the columns, they will collide and you will get breaks in your circle. It's almost as if you were standing in the middle of the circle and you were seeing your field of view from the top-down view.

Right now, I have to extend lines from the center of the circle, past the intersecting point and delete the space "behind" the columns (or other object).

Any help or direction would be greatly appreciated.

Thanks!

John