Kangaroo

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THIS FORUM IS NO LONGER ACTIVE. PLEASE POST ANY NEW QUESTIONS OR DISCUSSION ON:

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The discussions here are preserved for reference, but new questions posted here are likely to go unanswered.

Kangaroo is a Live Physics engine for interactive simulation, optimization and form-finding directly within Grasshopper.

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Geometry confusion

by Dave Johnson

Feb 3, 2011

HI, I'm new to Kangaroo and trying to model something similar to a sushi mat: a set of linear elements woven together into a mat. Then that mat will be suspended by its edges.

 

I have a simulation working (more or less) but at the moment all I have are the points moving around (Kangaroo component is previewing). I'd dearly love to get some real geometry in there, but can't for the life of me figure out how.

It seems that whatever I attach to the geometry input causes an error. For instance I create a set of pipes around my straight elements, plug it in, and immediately get an error saying "geometry type not supported". 

 

What am I doing wrong? Or where can I look for more info about this?

 

Thanks for any help.

  • up

    Daniel Piker

    Hello Dave,

     

    This is not anything you are doing wrong, just that only a few geometry types are currently supported in Kangaroo for the 'attached geometry' input/output. (points, lines and meshes)

    We will definitely be adding some more types (curves, surfaces etc) in future.

     

    Note that the Path structure of the Geometry Input/Output is preserved, and this can be very useful for reconstructing geometry. For an example look at the definition I posted in this thread:

    http://www.grasshopper3d.com/xn/detail/2985220:Comment:154191

    and this comment

    http://www.grasshopper3d.com/xn/detail/2985220:Comment:154841 

     

    If you are making pipes around straight elements, rather than making them upstream of kangaroo, you should input the elements to Kangaroo's Geometry input as Lines, then pipe the GeometryOut output.

     

    Hope this helps

    1

    Feb 3, 2011

    • up

      wannes lernout

      Hey Dave,

       

      Maybe the attached file can help you.

      1

      Feb 4, 2011

      • up

        Have you been able to find what you were looking for?

        Jun 14, 2023