creating cells with set of points

Hey Guys,
I am facing a problem in creating cells (can be a surface or polyline) from a set of points. The points vary for different cells as seen in the pic attached.. Can anyone help me solving this porblem..
Thank u

Replies to This Discussion

Permalink Reply by Danny Boyes on April 15, 2010 at 2:40am

What is the dupPt component?

Permalink Reply by Tushar Sharma on April 15, 2010 at 2:44am

its just to remove duplicate points... dunn consider my definition after clean component.. i was just trying to control the no. of points using that..

Permalink Reply by taz on April 16, 2010 at 5:46pm

dupPt is from Kangaroo.

Permalink Reply by Danny Boyes on April 15, 2010 at 3:12am

Does it have to be 4 sided? If not have you tried the Delaunay Edges Component which will create a triangular mesh.

Permalink Reply by Tushar Sharma on April 15, 2010 at 4:05am

yes .. its created a triangular mesh using 3 points.. but i wanted to creat a polyline or surface creating points ranging from 3 to 6.. as seen in the image, one cell is created using 4 points and one using 5

Permalink Reply by David Rutten on April 15, 2010 at 6:28am

Tushar,

you've drawn in a couple of cells, but I cannot see any algorithm that would match your intuition. You need to be more specific about how exactly these cells are defined.

I.e., you cannot just draw a quad, you have to provide a textual explanation about why you connected those specific points in that specific sequence.

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Tushar Sharma on April 15, 2010 at 7:32am

Hey David,
I have attached the files of the definition with my doubts.. I would like to know the correct way to approach the desired result..I have also started a discussion about the region difference with my file attached.. Would be thankful if u hava look at it..

Thank u

Permalink Reply by David Rutten on April 15, 2010 at 8:09am

I don't see any attachments...

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Tushar Sharma on April 15, 2010 at 2:31pm

sry. might be some problem in loading..

Permalink Reply by David Rutten on April 15, 2010 at 3:14pm

Ok, now I understand what you're trying to do. It's a very well defined approach but I'm afraid there's no easy shortcut. What you need is a CurveBoolean operation that finds all the individual segments, or some sort of smart brep|curve trimming algorithm.

I think something similar did come up here recently, have a look at this thread: http://www.grasshopper3d.com/forum/topics/generating-closed-cells-from

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Tushar Sharma on April 15, 2010 at 3:37pm

Hey,
Heres the region subtracting file.. there some loading problem with my comp.. so didnt get attached previously.. i really cant figure out why i cannot get to the desired result..

Attachments:

Subtract Region.3dm, 1.8 MB
subtract region.ghx, 51 KB

Permalink Reply by Tushar Sharma on April 20, 2010 at 4:40pm

hey david,
i really tried and failed to understand it fully and implement the solution provided in the link..can u pls tell me how do i do this curve boolean operation in my definition..