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    Trying to draw an elliptical cone

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    • Rich O BrienR 離線
      Rich O Brien Moderator
      最後由 編輯

      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 📖

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      • frascatiF 離線
        frascati
        最後由 frascati 編輯

        Ok

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        • Dave RD 離線
          Dave R
          最後由 Dave R 編輯

          @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 離線
            frascati
            最後由 frascati 編輯

            Ok

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            • Rich O BrienR 離線
              Rich O Brien Moderator
              最後由 編輯

              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 📖

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              • frascatiF 離線
                frascati
                最後由 編輯

                ...but crabs sometimes repurpose shells

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                • frascatiF 離線
                  frascati
                  最後由 編輯

                  @frascati said:

                  ...but crabs sometimes swap shells

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                  • frascatiF 離線
                    frascati
                    最後由 frascati 編輯

                    Ok

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                    • frascatiF 離線
                      frascati
                      最後由 frascati 編輯

                      I see

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                      • frascatiF 離線
                        frascati
                        最後由 frascati 編輯

                        Thank you

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                        • Rich O BrienR 離線
                          Rich O Brien Moderator
                          最後由 編輯

                          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 📖

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                          • frascatiF 離線
                            frascati
                            最後由 frascati 編輯

                            Ok

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                            • BoxB 離線
                              Box
                              最後由 Box 編輯

                              Too many straws.

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                              • frascatiF 離線
                                frascati
                                最後由 frascati 編輯

                                Ok

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                                • gullfoG 離線
                                  gullfo
                                  最後由 編輯

                                  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 離線
                                    frascati
                                    最後由 frascati 編輯

                                    Ok

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                                    • BoxB 離線
                                      Box
                                      最後由 編輯

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

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                                      • frascatiF 離線
                                        frascati
                                        最後由 frascati 編輯

                                        Ok

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                                        • Rich O BrienR 離線
                                          Rich O Brien Moderator
                                          最後由 編輯

                                          @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 📖

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                                          • panixiaP 離線
                                            panixia
                                            最後由 編輯

                                            @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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