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    Trying to draw an elliptical cone

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    • Dave RD Offline
      Dave R
      last edited by

      @frascati said:

      Is there an elegant workaround without using a plugin?

      It depends on what version of SketchUp are you using. Please complete your forum profile with that information.

      Etaoin Shrdlu

      %

      (THERE'S NO PLACE LIKE)

      G28 X0.0 Y0.0 Z0.0

      M30

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      • Rich O BrienR Offline
        Rich O Brien Moderator
        last edited by

        Smoove has a falloff that could achieve such a result...

        https://i.imgur.com/6YPAfkb.png

        Here's a very basic example.

        Download the free D'oh Book for SketchUp πŸ“–

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        • frascatiF Offline
          frascati
          last edited by frascati

          Ok

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          • Dave RD Offline
            Dave R
            last edited by Dave R

            @frascati said:

            Really no way to do this natively in Sketchup?

            Rich showed you a native way to do it.

            Another non-extension way to do it would be to stitch the vertices together with the 2-point Arc and Line tools.

            The method I showed in that thread of using Follow Me and then scaling the large end to make an ellipse doesn't require any extensions.

            Etaoin Shrdlu

            %

            (THERE'S NO PLACE LIKE)

            G28 X0.0 Y0.0 Z0.0

            M30

            %

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            • frascatiF Offline
              frascati
              last edited by frascati

              Ok

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              • Rich O BrienR Offline
                Rich O Brien Moderator
                last edited by

                Smoove is a tool under Sandbox

                Falloff is a linear decline in influence over distance

                Potatoes are not vegetables.

                Download the free D'oh Book for SketchUp πŸ“–

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                • frascatiF Offline
                  frascati
                  last edited by

                  ...but crabs sometimes repurpose shells

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                  • frascatiF Offline
                    frascati
                    last edited by

                    @frascati said:

                    ...but crabs sometimes swap shells

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                    • frascatiF Offline
                      frascati
                      last edited by frascati

                      Ok

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                      • frascatiF Offline
                        frascati
                        last edited by frascati

                        I see

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                        • frascatiF Offline
                          frascati
                          last edited by frascati

                          Thank you

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                          • Rich O BrienR Offline
                            Rich O Brien Moderator
                            last edited by

                            https://i.imgur.com/2qStuJz.png

                            1. Draw the primitive divided circle
                            2. Scale from centre along an axis
                            3. Select the boundary edges and active Smoove. Set a value for your falloff
                            4. Position geometry and shade smooth

                            I can't give you precise values as I didn't do it to any particular size. So you may have experiment with your falloff values using Smoove.

                            Download the free D'oh Book for SketchUp πŸ“–

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                            • frascatiF Offline
                              frascati
                              last edited by frascati

                              Ok

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                              • BoxB Offline
                                Box
                                last edited by Box

                                Too many straws.

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                                • frascatiF Offline
                                  frascati
                                  last edited by frascati

                                  Ok

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                                  • gullfoG Offline
                                    gullfo
                                    last edited by

                                    it's a profile using an elliptical shape with follow me. all native tools.

                                    if you're trying to duplicate the HF drive on the speaker in your first post - Genelec uses a mathematical model to generate it, not drawing tools. when i model their speakers for recording studio designs, i use the profile and elliptical curve or the scaling method - which ever one looks "close enough" since i'm not actually making the speaker, just need it for size and rendering purposes.

                                    Glenn

                                    http://www.runnel.com

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                                    • frascatiF Offline
                                      frascati
                                      last edited by frascati

                                      Ok

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                                      • BoxB Offline
                                        Box
                                        last edited by

                                        Follow me on an ellipse will not produce the shape you want.

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                                        • frascatiF Offline
                                          frascati
                                          last edited by frascati

                                          Ok

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                                          • Rich O BrienR Offline
                                            Rich O Brien Moderator
                                            last edited by

                                            @unknownuser said:

                                            But I thought I'd try an elliptical horn rather than round. I had no idea I was opening a new can of worms

                                            The worm is the native only approach. Since SU is primarily a conceptual design tool and you require some level of accuracy its supported via extensibility.

                                            The core can't do it but it can be done.

                                            Download the free D'oh Book for SketchUp πŸ“–

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