Tessellated Screen Perforation

Hi all,

I've been trying to formulate a tessellated screen with the hope of perforating it using GH and after looking at a few tutorials (specifically the one pasted below by Michael Pryor) it seems that I've hit a wall.

http://formularch.blogspot.com/2012/05/gh-perforation.html?showComm...

After using the same grasshopper definition he has shown I still cannot achieve the perforation for some reason. Furthermore, Ive been trying to exchange the circles with triangles which has caused me more issues on how to link them to the base plane.

I have attached the jpgs showing what I have reached thus far, as well as an image of what I hope to achieve.

Any help with this matter would be very much appreciated.

Thanks,

Jasim.