In this video we will learn how to control Fracture Simulations so you make them work as you need them, controlling simulations is one of the best abilities an FX artist can have, cause is your job to make them look as they should for that blockbuster film.



Varomix has created a vast library of Houdini training over years. Recently he has started on his own venture with MIX Training, a training and community resource for Houdini, Unreal Engine, Python and much more If that alone is not enough, Varomix also find a little escape through his metal band WEYEZ.

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  • Enivob 2 years, 4 months ago  | 

    Thanks, I never really knew how to setup the i@active attribute. Also the tip on adding velocity when activating them great. This is a nice alternative to using constraints, especially if you know you are going to have to break them anyway.

    • varomix 1 year, 12 months ago  | 

      Nice to hear is useful for you, Cheers!

  • yavarjangjoo 2 years, 4 months ago  | 

    hi man
    you are one of the best tutors of my Houdini journey
    so thanks and i love you

    • varomix 1 year, 12 months ago  | 

      So amazing man, so glad to be part of your journey

  • Aram van bergen en H 1 year, 12 months ago  | 

    Is there a way to do this for multiple DOP objects?

    Great tut!

    • varomix 1 year, 12 months ago  | 

      Yeah for sure, you could even make the attribute stuff in SOP before you pass it to DOPs

      • Aram van bergen en H 1 year, 12 months ago  | 

        Do you maybe have a little example file of that? I'm kinda struggling with adding the active attr. to multiple objects. Dop doesn't really seem to get it. Objects stay freezed.

        • varomix 1 year, 12 months ago  | 

          I haven't done it with multiple objects, but the learning begins when you struggle, if you have a file a could take a look
          go to and make a post there so we can help you


        • OneBigTree 10 months, 4 weeks ago  | 

          I have the same issue. creating the group at obj level (animated) doesn't work because the change in the group isn't imported in the DOP net.
          And the SOP solver only shows the first object imported in the DOP net.

          • varomix 10 months, 4 weeks ago  | 

            That's why I'm doing it in the sop solver that gets evaluated at the same time as the other sim elements

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