Removing points from the inside of a subD

I have made a subD in rhino then used populate geometry to fill it with spheres but I only want the spheres to be seen from the outside of the subD. Is there any way to do this so that the inside will be smooth?



Please attach your Grasshopper file for help, thank you!

here it is, thankyou!

BAG 1.gh (12.1 KB)