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    Trying to draw an elliptical cone

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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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                                        • frascatiF Offline
                                          frascati
                                          last edited by

                                          It was actually a very mild RE-action to being confidently assured that I'd been "shown" the way to do it already.

                                          You considered my response rude? Really? You need to get out of the house more. I absolutely take offense to being called rude when my conduct does not merit it.

                                          You have offered the initial rudeness here. Please refrain from comment in any further topics I submit.

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                                          • frascatiF Offline
                                            frascati
                                            last edited by frascati

                                            ok

                                            1 Reply Last reply Reply Quote 0
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