twisting parts of an extruded object

hi! i've only been using grasshopper/rhino for about a week, so please excuse me if i'm using the wrong terms and generally for being noobish.

what i'm trying to do is to twist sections of the 'strips' i've generated (by extruding along a curve, refer to images) so it's perpendicular to the original orientation then back.

i have absolutely no idea how to go about this. do i use an attractor to determine where i want the strips to twist and the degree of the twist? do i have to convert the curve to a vector first, twist, then extrude? then do i use box morph?

not really expecting a complete solution, maybe someone could point me in the direction of a video/blog post that covers this or something similar?

thanks heaps!

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Replies to This Discussion

Permalink Reply by Pieter Segeren on April 2, 2011 at 1:34pm

Hi joeljoel, I can't find the post I wanted to refer to anymore, but if you would upload your files, I'd be willing to have a look. My guess is that you could do this using a closed loft instead of the extrude.

Permalink Reply by joeljoel on April 2, 2011 at 8:38pm

hi peter

thanks for replying. here are the files, it's meant to be sort of a landscraper type building. i started by dividing curves i manually put into rhino into points, joining the points into a curve, then extruding along those curves to get my facade strips. and what i guess i'm trying to do is twist these strips on the larger side like the HdM signal box (image attached).

again, thank you for your time!

joel

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Permalink Reply by Pieter Segeren on April 3, 2011 at 9:57am

Hi joeljoel, I have made something in the direction I think you want to go. I couldn't get the sweep1rail component to work (can somebody else here have a look why this is?!), so I used a loft for now. Hope this helps.

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