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Rotation Problem

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rotation axis
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  • Dr. Sassi
    Dr. Sassi last edited by Dr. Sassi Jun 28, 2023, 4:47 PM Jun 28, 2023, 4:47 PM

    Hi Simon,

    Please have a look here. The idea is to rotate a Null and have a child, Null being the one tilting the object.

    CV4_2023_drs_23_ANrr_01.c4d

    Is that working for you? If not, please share a demo file of that problem, just the object.

    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.

    R 1 Reply Last reply Jun 29, 2023, 8:14 AM Reply Quote
    • R
      Rough1 @Dr. Sassi last edited by Rough1 Jun 29, 2023, 8:14 AM Jun 29, 2023, 8:14 AM

      @Dr-Sassi
      Hi, and thanks again for your help... Unfortunately, it was not what I was trying to achieve, as the axis of the rotating object must always be pointing in the same direction. I have animated it by hand. It doesnt look so presise, but it'll do. Rough enough, good enough...
      Regards, Simon

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      • Dr. Sassi
        Dr. Sassi last edited by Dr. Sassi Jun 29, 2023, 6:51 PM Jun 29, 2023, 6:50 PM

        Hi rough1,

        Thanks for the feedback. A reason why I typically ask for a project file, which I missed here.

        Since leaving this open-ended here might not be pleasant for any reader of the forum, is this what would solve it?

        Is this coming closer? The Y-axis stays vertical.
        CV4_2023_drs_23_ANrr_02.c4d

        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
        • R
          Rough1 last edited by Jun 30, 2023, 12:37 PM

          Yeah, sorry, the models I work with are CADs from our R&D department... They would flip if they thought I was sending them out of house, whatever the reason...
          Regards,
          Simon

          1 Reply Last reply Reply Quote
          • Dr. Sassi
            Dr. Sassi last edited by Jun 30, 2023, 8:21 PM

            Hi Simon,

            Any Dummy with a polygon object will do. But if there is no time for that, that is OK.

            Please see my question here as well as a long-time investment, as it helps me with future questions to understand more about your work. Every artist is different, and as far as possible, I like to adjust my replies to it, while I over-share typically to address the needs of beginners as well.

            Have a great weekend.

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

            R 1 Reply Last reply Jul 18, 2023, 10:07 AM Reply Quote
            • R
              Rough1 @Dr. Sassi last edited by Jul 18, 2023, 10:07 AM

              @Dr-Sassi Hi sorry it took a bit of time, busy boy an all...
              Here's how I achieved it, but with a few more keyframes to smooth it out a bit more. But It would of been much better to have the head move in a perfect circular motion, while keeping the same direction.
              cheers,
              Simon

              Rotation Test.c4d

              1 Reply Last reply Reply Quote
              • Dr. Sassi
                Dr. Sassi last edited by Dr. Sassi Jul 19, 2023, 8:22 AM Jul 19, 2023, 7:57 AM

                Thanks a lot, Simon.

                Here is your file back.

                CV4_2023_drs_23_ANar_01.c4d

                or, less flexible, but see for your self:
                CV4_2023_drs_23_ANar_11.c4d

                🔒 Log in to view

                I have introduced two parameters for a total of four keyframes. It moves perfectly round and as a loop for 0-120 frames.
                The tilt can be adjusted.

                Enjoy

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

                R 1 Reply Last reply Jul 19, 2023, 8:38 AM Reply Quote
                • R
                  Rough1 @Dr. Sassi last edited by Jul 19, 2023, 8:38 AM

                  @Dr-Sassi AHHHH ha... Now I see.
                  Thanks for the help.
                  Cheers,
                  Simon

                  1 Reply Last reply Reply Quote
                  • Dr. Sassi
                    Dr. Sassi last edited by Jul 19, 2023, 8:15 PM

                    Hi Simon, you're very welcome.

                    It feels like "functions" could operate it (no keyframes!); perhaps XPresso is the way to set up something. I see a Cosine and Sine shape there 😉

                    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
                    • Dr. Sassi
                      Dr. Sassi last edited by Dr. Sassi Jul 20, 2023, 2:07 AM Jul 20, 2023, 2:05 AM

                      P.S.: Here is an XPresso example

                      CV4_2023_drs_23_ANar_21.c4d

                      The Multiply Node is for speed adjustments.

                      BTW.: No keyframes needed!

                      Have fun

                      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
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