Hi guys, playing with the grasshopper, I've some trouble with the operations between list of points..
Now I will explane the process, then the problem: 1. I take a surface and I extract the pointgrid 2. I take 3 points out of the surface 3. I calculate the distance between each point and the pointgrid. 4. I sort the pointgrid lists using the distance from each point and the pointgrid 5. I extract the first 10 element of the re-ordered pointgrid...so I can take the nearest 10 points from each point. Here comes the problem: what I want to do is to take the points not involved in the subset controlled by the three points. And to do this I have to take the first pointgrid and subtract the three subsets of points of the same grid to obtain what i want. The question is: can I do that? and how? I've tried with booleans, but it doesn't work... I add a quick shot to give a visual explanation of the problem! http://groups.google.com/group/grasshopper3d/web/ptgrids.jpg Thank you guys
