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    Trying to draw an elliptical cone

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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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                                          • panixiaP Offline
                                            panixia
                                            last edited by

                                            @frascati said:

                                            "Rich showed you a native way to do it."

                                            "Smoove has a falloff...."

                                            I need to go back and change my "intermediate" level of understanding to "beginner"

                                            "Smoove" is a member here? And a "falloff" is a what? Do the four images he posted suffice as a "tutorial"?

                                            Not sure why you are so rude, nobody is in owe of doing turorials for you.
                                            By the way what Rich said is more than enough, those are the only (pretty self explainatory) tools to attempt a similar shape in vanilla Sketchup.
                                            As already said, is pointless to try to model this kind of shapes using only native tools.
                                            Here's my 15 minutes draft using QFT/VT2/SubD.

                                            SubDSpeaker.JPG


                                            SubD_Speaker.skp

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