CINEVERSITY

    Maxon Logo
    • Login
    • Search
    • Recent
    • Popular
    • Users
    • Groups

    Vertex map growth and decay - how to achieve

    Question & Answers
    2
    8
    1048
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Sweeping Motion
      Sweeping Motion last edited by

      I'm using a vertex map on a spline to trigger a rope simulation.

      I can grow the weights but I'd like them to dissipate over time . Kind of like a wave or infection where the infected die out. However I can't seem to achieve this with the decay field.

      Could anyone advise me on how to do it?

      My current setup is:
      spherical field that starts the growth set to normal
      freeze with growth set to normal

      When I add decay nothing really happens.

      1 Reply Last reply Reply Quote
      • Dr. Sassi
        Dr. Sassi last edited by Dr. Sassi

        Hi Sweep Motion,

        It is always better to share a simple c4d file here (smaller than 1MB, or via DropBox, Google, Apple, Adobe, Wetransfer)

        Please have a look here:
        CV4_2024_drs_24_ANsv_01.c4d

        I have set up a Formula Field in the Vertex Map. The Formula is simple: ID<f
        The f in the Formula represents the slider in the Variables. So you can animate this.

        A great tool for this to observe is the Main Menu> Structure Manager. When open, please set the Mode to Vertex Map.
        Please note that this is not live update information; it must be stopped to refresh the values.
        As a side note, the Structure manager also allows us to easily access how many "points" the spline has.

        Screen Shot 2024-02-09 at 10.51.16 AM.jpg

        This helps to define the f value that needs to be set to get a working formula with the Point ID of the Spline.

        The ID idea helps, even with Splines like a Helix, to change things from start to finish.

        Since this would be a 0% or 100% set only, I have placed the Decay after the Formula to have a smoother change.

        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
        • Sweeping Motion
          Sweeping Motion last edited by

          Thank you, I see. So there's no way to use the grow option in the freeze field?

          1 Reply Last reply Reply Quote
          • Dr. Sassi
            Dr. Sassi last edited by

            Hi Sweeping Motion,

            please share your file and I will have a look into it.

            Cheers

            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
            • Sweeping Motion
              Sweeping Motion last edited by

              shoelace_v03.c4d

              Here's the scene. Thank you for your help.

              1 Reply Last reply Reply Quote
              • Dr. Sassi
                Dr. Sassi last edited by Dr. Sassi

                Hi Sweeping Motion,

                Thank you very much for your file. I enjoy working on the target instead of guessing.

                Here is your file back; please note that I have nothing deleted but placed things not in use on a layer.

                The first file showcases the function; you want to have it grow and then die off. The idea is to have a second Vertex Tag with the same function applied but triggered later. This is then used as a Mask for the first one. Grow then die; if this needs more cycles, perhaps use alembic, or you need to set the second one back to zero, which inverted means the first one is working again. Have a look, as words might be too abstract.

                Screen Shot 2024-02-09 at 8.06.22 PM.png

                CV4_2024_drs_24_ANvi_01.c4d

                This is the simple version of your file.
                https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2024_PROJECTS_DRS/20240209_CV4_2024_drs_24_ANvi_11.c4d.zip

                Here, I took the liberty to dramatize the die-off a little bit. Perhaps it is to your liking.
                https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2024_PROJECTS_DRS/20240209_CV4_2024_drs_24_ANvi_21.c4d.zip

                Please test them carefully before going into production. This is the first time I have set this up that way.

                Enjoy your project

                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
                • Sweeping Motion
                  Sweeping Motion last edited by

                  Thank you Dr Sassi!

                  1 Reply Last reply Reply Quote
                  • Dr. Sassi
                    Dr. Sassi last edited by

                    You're very welcome, Sweeping Motion,

                    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.

                    1 Reply Last reply Reply Quote
                    • First post
                      Last post