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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

      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 Online
          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 Online
                  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

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                            • HornOxxH Offline
                              HornOxx
                              last edited by

                              Besides all the other good solutions above, here is another very quick one:
                              Not native but with the plugin Cruviloft you can also achieve this desired geometry with ease.
                              With the same tool and with the same simple principle you can get even further than just to the speakers.
                              In the middle is the circle - around it is a small number of elypses which you move (up) to your desired positions. Then you let the plugin work which generates the desired shape with the preferred segmentations and smoothing by clicking on the circle and elypses plygons in the correct order - Done!
                              (Above a certain level of complexity it is advisable to consider plugins rather than torturing yourself with the native options - especially if you are dealing with organic shapes)


                              curviloft.jpg

                              never trust a skinny cook

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                              • frascatiF Offline
                                frascati
                                last edited by

                                Thank you HornOxx. That looks promising. I'll give it a go.

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                                • frascatiF Offline
                                  frascati
                                  last edited by

                                  91645cb9-72f6-41eb-b46a-7b0d98b179b9.jpg

                                  Fotor_AI.png

                                  This AI is kinda fun

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