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creating a folding pattern

hello everybody!

I'm fairly new to grasshopper and in order to get a basic understanding of the tool i am working my way through Zubin Khabazi's book "Generative Algorithms".

My goal for now is to write a definition that represents the following surface that I have created out of paper.

This is essentially a squared surface subdivided into triangular segments. For that reason I was hoping I could use Zubin's example about triangles in chapter 3 of his book.

I'm sure, you guys know these kind of folding technique, but to clarify the pattern of the surface, here's a quick diagram:

My approach was to use the point cloud out of Zubani's example and select points with the Cull Nth component according to the pattern shown in the diagram. These points I would then offset with a z-vector component while keeping the distance between the points fixed.

However, after spending now several days trying to figure this out, I definitely ran into a wall..

As I see it, the example generates multiple points for the same coordinates, meaning there are occasions where there 6 points on top of each other.

Further, the Cull Nth component doesn't work exactly as I've hoped, the problem lies in the transition from one row to another..

I was also thinking instead of creating a series of points and then trying to filter specific points out to create (a) the surfaces and (b) the offset, maybe I should start creating these separate lists from the beginning?

Or, instead of point cloud series, using a surface and the sDivide component?

As you see, I am pretty confused/lost in the problem... any help would be greatly appreciated!

Thanks!

Replies to This Discussion

Permalink Reply by nikacat on August 8, 2011 at 8:03pm

Do you have to represent the entire surface? Can you just define one unit?

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