Grasshopper

algorithmic modeling for Rhino

Twisting object

Hello everyone,

I need your advice, i would like to twist an object (a candlestick for example).

I already did it by beginning to a range of curve, as seen as many tutorials, twist, and then loft. 

My problem is that i need to twist the entire object that i create, not depending on curve but on mesh or surface.

Have you any ideas to get the result, and have all the existing details?

I look forward to your response.

Ps : attached the candle stick, and the twist effect

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Permalink Reply by David Rutten on November 21, 2013 at 8:10am

It's easy to twist meshes, as you can operate on the vertices and twisting is a straightforward mathematical operation. Doing it to Breps, surfaces or curves is much harder and it will require the Rhino morphing tools and thus it will require scripting.

I attached a file which twists meshes. It's quite slow.

--

David Rutten

david@mcneel.com

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Permalink Reply by Danny Boyes on November 21, 2013 at 8:59am

Here's a way that segments the Brep and then Applies a Twisted Box Morph to each one.

Try it out on your Candle stick and see if it works.

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Permalink Reply by Mich on November 21, 2013 at 7:02pm

Thanks both of you for your quick answer, i get the perfect result! 

Permalink Reply by Aiste Dzikaraite on December 15, 2014 at 12:11pm

Hey Danny,

Right now I am working with multiple twisted breps along moved rotation axis.

I found your definition very useful, but I am stuck with data tree.

Could you explain how to make your definition work for multiple breps?

thank you.

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