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How to Pull a cloth sim off of a collider that has been set initial state?

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  • H
    Hermann last edited by Aug 1, 2024, 8:41 AM

    login-to-view Hi
    I have a cloth sim that is draping from a collider object and I've set initial state and I want to pull it of the object after some time. problem is when I use cloth belt, when I want to select points, cloth object goes to flat state and after setting belt points it goes back to initial state and that makes it jump and glitch.
    Now my questions are :
    1- How to set cloth belt when cloth is in this state?
    2- Is there a better way to pull it off?
    3- Why wind and other forces does not affect cloth object?
    ![cloth.jpg](Image dimensions are too big)

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    • Dr. Sassi
      Dr. Sassi last edited by Aug 1, 2024, 6:22 PM

      Hi Herman,

      Having the simplest c4d file attached is always good for seeing what is happening. Otherwise, we might end up with a long list of questions while perhaps missing the problem.

      Images can't have more than 500 pixels vertically.

      There are two ways, and the result differs, to attach a belt.

      • One way is to go directly to the selected points.

      • The other way is to use the Current State Object and reset the Cloth Tag since you chose the initial state. Then, start from there.

      Setting the Damping higher, at least during the start, might help.

      I can't see problems with the Wind. Have you checked the Force list (if empty, it should be on Exclude), or the strength of the Wind Force need to be higher?

      Sect some points on the cloth and connect it to the Belt.

      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.

      1 Reply Last reply Reply Quote
      • H
        Hermann last edited by Aug 3, 2024, 10:03 AM

        @Dr-Sassi thanks again to you, a true C4D magician 🙂
        I'm gonna test it now.

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        • H
          Hermann last edited by Hermann Aug 3, 2024, 1:03 PM Aug 3, 2024, 1:03 PM

          that soloution was awesome. BUT I have a new problem 😞
          Cloth is not sliding off of the object. when I pull it it stretches and then object goes through cloth. I want it to slide off easily, like when they are revelaing a prize car in a showcase.
          @Dr-Sassi

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          • Dr. Sassi
            Dr. Sassi last edited by Aug 3, 2024, 5:07 PM

            Hi Herman,

            There might be many reasons, based on the object's setting or shape undernee=ath.

            Also, here, a c4d file is the key to answering this.

            If it is below 1MB, it can be attached here as c4d
            file.

            Please use Dropbox, Wetrasnfer, Google or Apple, and Adobe cloud services if larger. For security reasons, I do not touch anything else; please, no shortened URL. Thank you

            Cheers

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

            H 1 Reply Last reply Aug 3, 2024, 5:28 PM Reply Quote
            • H
              Hermann @Dr. Sassi last edited by Aug 3, 2024, 5:28 PM

              @Dr-Sassi Sorry I forgot.
              https://drive.google.com/file/d/1s4ABTpcST_QbnirOQtx6xE7HeusAZsVB/view?usp=drive_link
              my project file was a bit heavy so I made a duplicate and deleted everything that wasn't important.
              thank you for your time

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              • Dr. Sassi
                Dr. Sassi last edited by Aug 3, 2024, 5:49 PM

                Hi Herman,

                I have used the link, but was prompted to ask for access. I used my "no reply" email.

                Cheers

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

                H 1 Reply Last reply Aug 3, 2024, 6:19 PM Reply Quote
                • H
                  Hermann @Dr. Sassi last edited by Aug 3, 2024, 6:19 PM

                  @Dr-Sassi Sorry. I've corrcted the permission. Now you can directly access it

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                  • Dr. Sassi
                    Dr. Sassi last edited by Dr. Sassi Aug 4, 2024, 7:30 AM Aug 4, 2024, 7:09 AM

                    Thank you very much, Hermann.

                    Please have a look here; I feel that comes the closest to a sweet spot of time investment and stretchy-avoidance:
                    https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2024_PROJECTS_DRS/20240804_CV4_2024_drs_24_SIcp_01.zip

                    There are limitations to getting a zero stretch in a Fabric, which I do not know how to achieve while keeping it fabric-like.

                    The Stretchiness parameter can't produce a fixed 0% as the fabric needs to move around and bend. The bendiness (parameter) amount will not drastically change the stretchiness.

                    More importantly, the higher the mesh resolution is, the more stretching will show. Since this defines the fabric, there is little to change if it is a stiff or silk-like material. I have not found an option to get silk and nonstretch in on fabric.

                    Some. tips
                    The Text object should have bevels on the caps; sharp edges don't look good, but they are nearly impossible to use for simulations without many iterations.

                    If you have a practical, non-stretching fabric, if pulled fast, it might "fly" off the object to a certain degree. Consider slightly supporting that fly-off with a Wind Object from below to remove some friction and support the pull.

                    It is helpful to have the mass not set too high nor leave the gravity as it is.

                    I hope that helps

                    My best wishes for your project

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

                    H 1 Reply Last reply Aug 4, 2024, 7:26 AM Reply Quote
                    • H
                      Hermann @Dr. Sassi last edited by Aug 4, 2024, 7:26 AM

                      @Dr-Sassi You are amazing. this is the best I've seen. I've searched the whole internet, and believe me there is nothing regarding cloth pulling.

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                      • Dr. Sassi
                        Dr. Sassi last edited by Aug 4, 2024, 7:32 AM

                        You are very kind, Hermann; thank you very much.

                        There is always a feeling that it could be better, given that we all have a lifelong experience with fabric. 😉

                        Have a great weekend, and thanks again.

                        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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