Tower with changing thickness (mabye rotation)

Hello people of this forum,

I'm new here and this is my first attempt to formulate a question in relation to grasshopper. I hope I will not fail!

I want to stack rectangles in Z direction, but want to be able to change them in their size while going up.

In the pictures below the red lines are the ones, which form the size of the rectangles. The green line resultates and the blue is fix.

In the added Rhino and gh file I made a twisted tower, in that I wanted to change the thickness of the tower but failed.

So can anybody help me to combine the ideas of twisting and size changing in height?

Or at least give me a idea, how to change the rectangle size following 2 parametric curves like I did in the rhino picture?

Thank you in advance :)

Replies to This Discussion

Permalink Reply by Nikolaos Argyros on May 16, 2017 at 8:35am

Hey Steve,

Try this, i think is quite similar with what you are trying to do.

Best,

Attachments:

towerC.gh, 17 KB

Permalink Reply by Nikolaos Argyros on May 16, 2017 at 8:39am

forgot this

Attachments:

towerC.3dm, 168 KB

Permalink Reply by Steve Schiller on May 16, 2017 at 11:25am

Thank you Nikolaos for your quick respond!

It's a good start but not exactly what I'm searching for ;) The top and bot of the tower have the same size and the deformation is either too edgy or too wide.

I think I'm searching for a solution where I can control the two red lines to change the rectangles.

Permalink Reply by Laurent DELRIEU on May 16, 2017 at 1:40pm

Here is a solution with 2 curves, one in a plane, the other in the other. To change the tower use control point in Rhino (F10 then the mouse). If you want more levels put a slider in N in the range component, by default N=10.

For the twist it is you who design, so you will have to give more informations. Twist on an straight axis, a curve ... constant twist ... There are many possibilities. For each floor you will need a center of rotation and an angle.

Permalink Reply by Joseph Oster on May 16, 2017 at 1:41pm

I drew three curves in Rhino, internalized in this GH: vertical corner line ('Crv1') and two shape curves, one in X plane, other in Y plane. How you manipulate those curves, and other "bells and whistles", is up to you...

Attachments:

Tower_2017May16a.gh, 12 KB

Permalink Reply by Laurent DELRIEU on May 16, 2017 at 1:46pm

Shame on me I didn't find the curve plane intersection !!!Well done Joseph.

Permalink Reply by Joseph Oster on May 16, 2017 at 2:50pm

Refined curves to be tangent to ground, reduced "floor count", added sheathing on two sides by extruding the basis curves, then intersecting and splitting (trimming) the resulting surfaces (green group):