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C4D hair instances and redshift

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  • D
    display-enthusiasm last edited by Apr 14, 2024, 9:09 PM

    I am instancing an object to hairs. I noticed vertex maps do not work when trying to render redshift and hairs. Is there a way to respect vertex maps? or is there a way to, say have a ramp of color along the length of the hairs on a redshift / C4D hair instance object so it mimics the original ramp?

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    • Dr. Sassi
      Dr. Sassi last edited by Apr 14, 2024, 11:09 PM

      Hi display-enthusiasm,

      Please share a demo file of your setup.

      Please use a Dropbox, Google, Wetransfer, Adobe, or Apple cloud file. If it is over one MB, it works here as a C4D file directly; zip files won't work as a forum attachment. (For security reasons, please avoid other options or shortening URLs that you).

      Enjoy your Sunday

      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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      • D
        display-enthusiasm last edited by Apr 15, 2024, 12:00 AM

        Thanks for the reply! Here is a dropbox file. I tried to get rid of everything not necessary to at least show what I'm trying to accomplish. Basically.. any color gradient along the length of the object. You can see, in my "remesh" object, I have a vertex gradient in the surface. Seems like maybe I might have to do something with UV's but not sure the hair will recognize that. https://www.dropbox.com/scl/fi/1q1vcvha7nz0ffghh5mg3/Redshift_Hair_Instance_v01.c4d?rlkey=xaijznclu9rchkrxkyr70neag&dl=0

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        • Dr. Sassi
          Dr. Sassi last edited by Dr. Sassi Apr 15, 2024, 4:40 AM Apr 15, 2024, 4:39 AM

          Hi display-enthusiasm,

          Thank you very much for the file; it allows me to answer much better.

          Set the Vertex map as needed for the object that will be "cloned" as a Hair Instance.
          When this is how you like it, use the "Clear" button of the Freeze, then use the Freeze button. Switch the Sphere Field off.

          Then, Disable the Field (or as it is called now (2024.4) the Transfer option. When you have a simple Vertex Map back, the effect for the Redshift Material should work with the instance.

          If you leave it as in the submitted file, the Sphere will work for all, meaning that if they are not inside the Sphere Field, it will have no effect.

          The Area light is not the best light to see this, as the Subsurface will prevent clear vision.

          I can share the file if you like, as I have used different material settings to clarify it.

          Screenshot 2024-04-14 at 9.36.22 PM.jpg

          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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          • D
            display-enthusiasm last edited by Apr 15, 2024, 11:05 AM

            I'd love to see your file as well. Thank you for the help (again!)

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            • D
              display-enthusiasm last edited by Apr 15, 2024, 11:06 AM

              Actually... I do not need to see your file. I have gotten it working. Ticking off the field button was what I was forgetting! Excellent.

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              • Dr. Sassi
                Dr. Sassi last edited by Apr 15, 2024, 4:03 PM

                Thanks for the reply, display-enthusiasm.

                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.

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