Kangaroo Hinge Relaxation

A mesh consisting of 4 flat surfaces is relaxed to a cone-like shape by using the Hinge Force in Kangaroo. It's a bit tricky to make it out in the (yellow) GH model so check the baked examples "Before" and "After", they show the difference pretty well.

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Comment by Venkata Shiva Ganta on February 21, 2018 at 5:57pm: Can you share the definition please? I'm trying to learn. Thank You.

Comment by Mårten Nettelbladt on August 23, 2011 at 3:13am: Hi Benjamin. For the moment I'm just playing around with Kangaroo, but I guess it's part of a more long term goal to be able to model free-form developable structures that curve according the rules of bending geometry. The Hinge Force is a big jump forward in this investigation! /MÅRTEN

Comment by Benjamin Golder on August 22, 2011 at 6:58pm: Martin, I have always enjoyed your empirical testing, and have followed your Geometry of Bending blog from the beginning. Do you have any new fabrication or testing projects on the horizon?

Comment by Arthur Mamou-Mani on August 22, 2011 at 3:11am: Thanks a lot Marten ! Will read this ASAP.

Comment by Mårten Nettelbladt on August 22, 2011 at 3:04am: The unrolled shape is exactly the same for both versions (they are both developable). "Before" is made of 4 flat surfaces and "After" is part of a cone. Daniel Piker gave me this link with some explanations of the Hinge concept: http://www.multires.caltech.edu/pubs/ds.pdf

Comment by Arthur Mamou-Mani on August 22, 2011 at 2:43am: Thanks Marten! What are the properties of the relaxed cone in comparison to the flat one?

Comment by RWNB on August 20, 2011 at 4:31pm: many thanks. that's really nice.

Comment by Mårten Nettelbladt on August 20, 2011 at 4:17pm: I've posted the example above, here:
http://dl.dropbox.com/u/20386776/MN-hinge-relaxation.zip
Please note that it requires Kangaroo version 0065 or later, with the Hinge component. I think it will be public soon. You also need the WeaverBird plug-in by Giulio Piacentino. The C# code component used in this definition to sort out hinge verticies was written by Daniel Piker.