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    Animated growing cylinders :How to do ?

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    • MALAISEM Offline
      MALAISE
      last edited by MALAISE

      Hello Guys,

      Have you seen basic.woodworks' last tuto?

      301 Moved Permanently

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      (www.sketchucation.com)

      There is an amazing animation in scene "Push-Pull intersecting cylinders "
      Does someone know how he realized this "growing cylinder" effect ?

      At this moment, as we say in France, my teeth are broken attempting to understand
      the making of.
      Thanks for help...
      MALAISE

      La Connaissance n'a de valeur que partagée

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      • R Offline
        remus
        last edited by

        I havent watched it, but im guessing he did it with section planes.

        If you make one scene with an active section plane at the bottom of the cylinder, then another scene with an active section plane above the cylinder you should get the growing effect when you switch between the scenes.

        http://remusrendering.wordpress.com/

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        • MALAISEM Offline
          MALAISE
          last edited by

          Hi Remus ! 😉

          You're right with the section story. But the fact is, the whole animation is located in lonely scene... then ??

          MALAISE

          La Connaissance n'a de valeur que partagée

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          • R Offline
            remus
            last edited by

            So he does.

            I still reckon you could do it pretty easily with section planes, but in this case it looks like it was done by playing around with camera angles and switching between parallel projection and perspective modes. I could well be wrong though, i'll be intrested to hear how the man himself did it...

            http://remusrendering.wordpress.com/

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            • MALAISEM Offline
              MALAISE
              last edited by

              Hello Remus

              I guess I've discovered the trick. I 've followed yours advices. Secret is lying
              in the animation's settings (scenes transition and scene delay are around 5 s) quite enough low to be seen in progress inside the selected scene

              • in the way you manage scenes properties.
              • the third remark concerns the activation of the toggle section off and on sub tool in section tool.

              Here is an example ( very basic one ! , according to your hints )
              I don't care about top and/or bottom whereas groups have been defined...

              Thanks you for yours friendly posts 👍 👍

              MALAISE 😄
              sorry for that strange written English (Anyway it's always a good exercice !) 😉


              basic animated growing cylinder

              La Connaissance n'a de valeur que partagée

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              • ely862meE Offline
                ely862me
                last edited by

                hold on a sec. how u make the sections to move?¿

                this is amazing 😄

                i found something here: active cut 😛

                Elisei (sketchupper)


                Before no life was done on Earth it was THE LIFE ITSELF...GOD
                Come and See EliseiDesign

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                • DavidBoulderD Offline
                  DavidBoulder
                  last edited by

                  Here is link to more complex example of mine from another post. Building columns and skin grow separately.
                  http://www.sketchucation.com/forums/scf/download/file.php?id=10591
                  http://www.sketchucation.com/forums/scf/viewtopic.php?f=15&t=10423

                  --

                  David Goldwasser
                  OpenStudio Developer
                  National Renewable Energy Laboratory

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                  • Alan FraserA Offline
                    Alan Fraser
                    last edited by

                    This is a very well-known technique. You need two section planes...one at each end of the object you want to "grow"...only one of which can be active at any given time. By using two scenes and having a different section plane active in each scene, you will get the effect that you see. You can limit individual section animations by confining them inside a group. Then you can choreograph which section animations plays at any one time (or simultaneously) by arranging a more complex series of scenes.

                    The model posted with the cylinders is a very nice example of multiple section animations.

                    3D Figures
                    Were you required to walk 500 miles? Were you advised to walk 500 more?
                    You could be entitled to compensation. Call the Pro Claimers now!

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                    • pilouP Offline
                      pilou
                      last edited by

                      You have a cool video about that here 😉

                      Frenchy Pilou
                      Is beautiful that please without concept!
                      My Little site :)

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                      • MALAISEM Offline
                        MALAISE
                        last edited by

                        Thanks Friends for all theses infos.. 👍 👍
                        MALAISE

                        La Connaissance n'a de valeur que partagée

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                        • Alan FraserA Offline
                          Alan Fraser
                          last edited by

                          It's also worth remembering that section animations do not need to travel in straight lines.


                          section.skp


                          section.jpg

                          3D Figures
                          Were you required to walk 500 miles? Were you advised to walk 500 more?
                          You could be entitled to compensation. Call the Pro Claimers now!

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                          • GaieusG Offline
                            Gaieus
                            last edited by

                            Here is a tut on section plane animations:
                            By Martin: http://www.sketchucation.com/forums/scf/viewtopic.php?f=19&t=633
                            and a "joke" by him in the same thread: http://www.sketchucation.com/forums/scf/viewtopic.php?p=29295#p29295

                            Gai...

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                            • DavidBoulderD Offline
                              DavidBoulder
                              last edited by

                              Another interesting section animation I did showed 2nd floor of my house in perspective. Then I started moving the camera down and at the same rate moved the section plane down (from scene to scene). The end result looks like the section plane is stationary and someone is pushing the model up into the section plane where it dissolves.

                              Ends up being pretty cool effect.

                              --

                              David Goldwasser
                              OpenStudio Developer
                              National Renewable Energy Laboratory

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