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Cloth won't settle after applying Initial State

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  • K
    kariomart last edited by kariomart Nov 14, 2023, 8:32 AM Nov 14, 2023, 8:32 AM

    I am using Cinema 4D 2024 and have several pieces of cloth that I simulated falling over a collider object. I want them to be at a state of rest after falling over the collider, so I can then use a wind or attractor to animate the cloth away.

    I've attempted to use Init State for the cloth objects, which works except that the cloth never comes to a complete stop, it continues to move. I've tried raising Smoothing Iterations in Project Settings, I tried raising Stickiness and Friction values of the cloth objects, but they still move. What else should I try?

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    • Dr. Sassi
      Dr. Sassi last edited by Dr. Sassi Nov 14, 2023, 11:09 PM Nov 14, 2023, 11:09 PM

      Hi kariomart,

      Please have a look here:

      https://help.maxon.net/c4d/2024/en-us/Default.htm#html/OPBDSCENE-PBDSCENE_GROUP_XPBDPROPERTIES.html#PBDSCENE_SMOOTHINGITERATIONS

      The main points would Dampening, Smoothing Iterations, Substeps, and Iterations. I would not forget to set it at one point as well (as it is like local dampening)

      Think of the energy that the simulation has, and some steps reduce the energy, and other things (wind) introduce new energy.

      I might have overdone it in the demo, but that is on purpose.
      CV4_2024_drs_23_CLwi_01.c4d

      Cheers

      Dr. Sassi Sassmannshausen Ph.D.
      Senior Trainer, Maxon Master Trainer, L&D - Strategist
      Cinema 4D mentor since 2004, Member of VES, DCS.

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      • K
        kariomart last edited by Nov 15, 2023, 12:09 AM

        Thank you so much for your help on this problem and the two others you answered today! I'll be sure to check out this project and the others.

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        • Dr. Sassi
          Dr. Sassi last edited by Dr. Sassi Nov 15, 2023, 3:48 AM Nov 15, 2023, 3:44 AM

          Hi kariomart,

          Thank you very much for the kind feedback. You're very welcome!

          Going by your scene description, Action, Static, Action, I explored the setup from a different "angle.
          To showcase that, I created two similar scenes. The one on the right is different. I explored the Scene Time here. Instead of sucking all the energy out of the simulation, I just dropped the time for a moment. Then, when the wind starts to blow, it is set back to 1.0

          Please have a look here.
          CV4_2034_drs_23_SIts_01.c4d

          login-to-view

          In the F-Curve Manager, you can fine-tune the settling of the spheres.

          Let me know what you think about it, as I have never used it this way in the relative "young" Simualtion-Scene options!

          Please cache the scenes to see it working without the delays. Around frame 100-150, the one on the left shows movement, the one on the right is still.

          Cheers

          All the best

          Dr. Sassi Sassmannshausen Ph.D.
          Senior Trainer, Maxon Master Trainer, L&D - Strategist
          Cinema 4D mentor since 2004, Member of VES, DCS.

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