Now , I know how to create pattern by cutting holes on sheet ( like aluminum sheet , stainless sheet etc., ) ,
Firstly we need to create mass numbers of circle from bitmap , calculate by grasshopper , then we need to cut holes to get final works , but GH will be lagged or even computer goes down , so that is why I have to loop split surface via such definition .
see pics to know why I like to cut holes now .
Here is the video to create the pattern . 🙂