Grasshopper

algorithmic modeling for Rhino

# SpatialDeform

Testing the new Spatial Deform component in Grasshopper 0.6.0015.

Spatial deformation is controlled by an array of grips and an array of local motion vectors. The closer a point is to a specific grip, the more it will "move" with the grip.

In this animation, the red grid is deformed by 5 points, each with its own motion vector. The 4 vertical lines at the corners all point in the same direction (they have the same motion vectors) and thus they would result in a non-deforming translation. However, the fifth grip (the moving one) has a shorter motion vector and thus it will bend the geometry around it away from the average translation.

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Comment by Alexander Kalachev on August 12, 2009 at 10:29am
Hi David is it possible to have a look on this definition?
Comment by David Rutten on July 29, 2009 at 3:51am
Hi Carlo,

it has nothing to do with form-finding. It's merely an inverse relationship between distance and affect. The grid I'm deforming is actually just a collection of lines, but it works on surfaces as well. Technically, when you're evaluating the space AT a grip, there is a kink in the space, but the Morphing algorithms in Rhino cannot handle this.
Comment by Carlo Beltracchi on July 29, 2009 at 3:41am
Hi David!
Really good stuff!!!
Can you take a look to this post http://grasshopper3d.ning.com/forum/topics/kinky-surface and tell me if you think that there are some relationship between my work and your?
My goal was to realize a kinky surface...an as i can see here you are doing something similar.

Another question...are the border lines of the green surface regulated by a relaxation algorhytm, like a tensile surface (catenaries)? I'd really like to show you my last work on catenaries cause I think it should be developed and become a good tool to explore new shapes with the form finding.

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