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Trying to draw an elliptical cone

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  • F Offline
    frascati
    last edited by frascati 19 Feb 2023, 21:41

    Ok

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    • R Offline
      Rich O Brien Moderator
      last edited by 19 Feb 2023, 21:53

      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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      • F Offline
        frascati
        last edited by 19 Feb 2023, 23:31

        ...but crabs sometimes repurpose shells

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        • F Offline
          frascati
          last edited by 19 Feb 2023, 23:33

          @frascati said:

          ...but crabs sometimes swap shells

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          • F Offline
            frascati
            last edited by frascati 19 Feb 2023, 23:37

            Ok

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            • F Offline
              frascati
              last edited by frascati 19 Feb 2023, 23:39

              I see

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              • F Offline
                frascati
                last edited by frascati 19 Feb 2023, 23:40

                Thank you

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                • R Offline
                  Rich O Brien Moderator
                  last edited by 20 Feb 2023, 00:00

                  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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                  • F Offline
                    frascati
                    last edited by frascati 20 Feb 2023, 01:27

                    Ok

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                    • B Online
                      Box
                      last edited by Box 20 Feb 2023, 01:30

                      Too many straws.

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                      • F Offline
                        frascati
                        last edited by frascati 20 Feb 2023, 02:52

                        Ok

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                        • G Offline
                          gullfo
                          last edited by 20 Feb 2023, 05:55

                          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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                          • F Offline
                            frascati
                            last edited by frascati 20 Feb 2023, 13:58

                            Ok

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                            • B Online
                              Box
                              last edited by 20 Feb 2023, 14:02

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

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                              • F Offline
                                frascati
                                last edited by frascati 20 Feb 2023, 14:43

                                Ok

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                                • R Offline
                                  Rich O Brien Moderator
                                  last edited by 20 Feb 2023, 15:13

                                  @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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                                  • P Offline
                                    panixia
                                    last edited by 20 Feb 2023, 15:39

                                    @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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                                    • F Offline
                                      frascati
                                      last edited by 20 Feb 2023, 16:17

                                      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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                                      • F Offline
                                        frascati
                                        last edited by frascati 20 Feb 2023, 18:32

                                        ok

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                                        • H Offline
                                          HornOxx
                                          last edited by 20 Feb 2023, 19:13

                                          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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