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Point cloud with color from 3D model?

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point cloud redshift 3d
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  • S
    savings-chest last edited by Dr. Sassi Jul 16, 2023, 6:42 AM Jul 13, 2023, 10:46 AM

    Trying to create a scene with point clouds from a pre-existing asset. Using attom array or cloner, I am able to get the spheres on the points of the object but how do I then transfer the object's color data to these points? Trying to get something like the pic below.

    ef617791-a3a2-4499-9798-8380daeec3f3-image.png

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    • Dr. Sassi
      Dr. Sassi last edited by Dr. Sassi Jul 13, 2023, 5:06 PM Jul 13, 2023, 5:03 PM

      Hi savings-chest,

      Please have a look here:

      CV4_2023_drs_23_MGpc_01.c4d

      Screen Shot 2023-07-13 at 10.03.17 AM.png

      Sphere Size and Bloom can be adjusted of course, over the top here to make a point.

      Screen Shot 2023-07-13 at 10.05.23 AM.png

      Is this working with your data? I have nothing from your side to explore it, so it is hard to tell. I love project files to answer here.

      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.

      S 1 Reply Last reply Jul 13, 2023, 5:46 PM Reply Quote
      • S
        savings-chest @Dr. Sassi last edited by Jul 13, 2023, 5:46 PM

        @Dr-Sassi Thank you so much for your reply! I sadly keep getting "failed to allocate necessary gpu recyclable memory. Aborting the render" even after having reduced all CPU, GPU memory settings. Perhaps you could tell me the steps I can take to go in this direction. I have a model with 5 colors on it and I want that color data to transfer to my point cloud.

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        • Dr. Sassi
          Dr. Sassi last edited by Jul 13, 2023, 6:21 PM

          Hi savings-chest,

          Not my favorite line to share: Have you restarted Cinema 4D?

          When I get this line, I have found no better way than this. Perhaps Tech Support can give you a better answer while having more specs from your setup. Nothing that I am supposed to do here.

          .

          I dragged the Point-could object into the Matrix Object.

          The Vertex Color went into the Shader Effector> Fields
          The Shader Effector> Parameters> Colors: Fields Colors

          The Shader Effector goes then to the Matrix Object
          The Matrix Object receives and Redshift Render Tag, set to particles: Sphere Instances

          The RS Material needs a User Data Color, while the Input Attribute is set to RSMGColor (Use the Preset button for this)
          The Matrix Object gets this RS Material

          Set up a Light and camera to your liking
          Save early, save often

          .

          Perhaps try it with a small object first.

          Please, let me know how it went.

          Enjoy

          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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          • S
            savings-chest last edited by Jul 14, 2023, 11:08 AM

            I am getting an all black point cloud with my object but the file you sent had a torus which had a red, green, yellow field. Is that the UVW mapping or was your material red, green, yellow?

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            • Dr. Sassi
              Dr. Sassi last edited by Jul 14, 2023, 5:52 PM

              Hi saving-chest,

              The colors come from the Vertex Tag.

              https://help.maxon.net/c4d/2023/en-us/Default.htm#html/TVERTEXCOLOR.html

              I do not have your file here, so I can't tell what is happening on your side.
              How did you create the file, where did you get it from, and what does the color have as its origin?

              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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