Kangaroo

3021 members

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THIS FORUM IS NO LONGER ACTIVE.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

https://discourse.mcneel.com/c/grasshopper/kangaroo

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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Hydro Pressure - Direction

by Brian Loudon

Jul 6, 2012

Hi, I'm rapidly becoming a heavy user of kangaroo, thanks Daniel!

Quick question on the hydro component; how can you change the direction of this force to be inside rather than outside an object? I've tried making the 3 input points  cw and ccw, I've also tried making the density negative but the results are always the same.

best,

Brian

  • up

    Daniel Piker

    Hi Brian,

    That's odd, when I test it setting the fluid density to negative works fine to reverse the direction of pressure.

    Are you sure your mesh has consistently oriented normals ? Maybe try some mesh fixing functions on it

    (AlignMeshVertices, Weld, UnifyMeshNormals)

    If that doesn't fix it please post the file or send it to me and I'll take a look

    3

    Jul 12, 2012

    • up

      lingsong Jin

      Hi Brian, Could you share a.GHX about how to use this command. I've tried many times about there was no any effect.

      thank you

      Jul 13, 2012