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Thread: OpenVDB collision fix

  1. #1
    Registered User joseba's Avatar
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    OpenVDB collision fix

    Hello, I am playing with the new Lightwave 2019 demo. I am trying to do a sort of liquid simulation inside of a pipe.
    I have two objects: The pipe (thickened) and a little disc inside, the water. I use Mesh to volume node in level set mode and world coords in both. THen i connect the water node to a scatter and next to a solver with the pipe object connected as collision grid.
    The problem is about the collision. It seems that the pipe collision is inside, not in the ¨skin¨of the pipe.
    Any ideas?

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  2. #2
    thats because you have to remove the inside of the pipe from the vdb.. you have to hollow it out

  3. #3
    Registered User joseba's Avatar
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    Thank you very much Oliver.
    So, the VDB collision is always a solid and you need a boolean operation.

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