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Exclude Particle Forces from Objects?

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  • E
    entry-newspaper last edited by Feb 21, 2025, 4:02 PM

    Hi!

    I have a simple scene (attached) whereby I have a simulation of a ball bouncing on a floor.
    Secondarily, I used a vertex map to drive some particles, emitting from where the ball impacts.
    However, the forces / effects I wish to apply to the particles are also affecting the ball simulation; which I don't want.
    How does one go about excluding or separating forces, in a project like this?

    Thanks!

    ball bounce test.c4d

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    • Dr. Sassi
      Dr. Sassi last edited by Feb 21, 2025, 7:38 PM

      Hi entry-newspaper,

      Thanks for the scene file.

      You can use a Simulation Scene to "isolate" the setup
      https://help.maxon.net/c4d/2025/en-us/Default.htm#html/OPBDSCENE.html#PLUGIN_CMD_1057221

      or

      Drag all the Forces that should not affect the Rigid Body in the Force Tab> Mode: Exclude. (Note that only one option can be used; include or exclude.)
      https://help.maxon.net/c4d/2025/en-us/Default.htm#html/TRIGIDBODY-RIGIDBODY_PBD_FORCES_GROUP.html#RIGIDBODY_PBD_FORCES_INEXMODE

      I tested both in 2025.1.3, as things might change, and both work.

      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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      • E
        entry-newspaper last edited by Feb 21, 2025, 7:46 PM

        Great, thanks. I'll test those options, further. I initally did try to employ the Simulation Scene, because it seemed logical. But for some reason, my results still seemed off. But I'm sure it's because I was just rushing to test things, and didn't pay close enough attention.

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        • Dr. Sassi
          Dr. Sassi last edited by Feb 21, 2025, 9:54 PM

          Thanks for the reply, entry-newspaper,

          Let me know how it goes.

          Enjoy your weekend

          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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