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    Geosphere?

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    • T Offline
      tml
      last edited by

      Note that the above results in just a fairly nice approximation, though. (And I don't know if it matches the subdivision used in your example image.) Only for the (not really sphere-like, as they have so few faces) Platonic solids are the vertices in a strict sense evenly distributed, though. See http://www.cgafaq.info/wiki/Evenly_distributed_points_on_sphere and especially http://www.math.niu.edu/~rusin/known-math/95/sphere.faq .

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      • thomthomT Offline
        thomthom
        last edited by

        Approximation is ok. Just just want to take a fixed number of points and distribute them approximately evenly. Doesn't matter if they need to be rounded to a number that fit some geometric restriction.

        Thanks for the links - I'll look into them.

        Thomas Thomassen β€” SketchUp Monkey & Coding addict
        List of my plugins and link to the CookieWare fund

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        • thomthomT Offline
          thomthom
          last edited by

          Excellent - the spiral methods works great for my use! πŸ‘

          Thomas Thomassen β€” SketchUp Monkey & Coding addict
          List of my plugins and link to the CookieWare fund

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          • AdamBA Offline
            AdamB
            last edited by

            Its pretty common to subdivide a cube and then project onto a sphere.

            If you want evenly distributed but not a regular mesh, you could use a Hammersley point set.

            Developer of LightUp Click for website

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            • thomthomT Offline
              thomthom
              last edited by

              @adamb said:

              Its pretty common to subdivide a cube and then project onto a sphere.

              Would that give a even-ish distribution?

              @adamb said:

              If you want evenly distributed but not a regular mesh, you could use a Hammersley point set.

              Thanks for the pointer - will look it up. πŸ‘

              Thomas Thomassen β€” SketchUp Monkey & Coding addict
              List of my plugins and link to the CookieWare fund

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              • david_hD Offline
                david_h
                last edited by

                @unknownuser said:

                A sphere with a center (x0,y0,z0) with diameter r
                has all points x,y,z like

                http://upload.wikimedia.org/math/3/3/0/33031c82e871501422b05455c81d2680.png

                with

                http://upload.wikimedia.org/math/e/b/9/eb91f8174391d023015dedf9beb94e5d.png

                http://upload.wikimedia.org/math/9/0/1/9011474548ae3216019a280ff95d25a3.png
                = Latitude

                http://upload.wikimedia.org/math/1/9/6/1964adc54d7dc608fd9f63a46cae422b.png
                = longitude

                That is just how I would do it! πŸ˜’ πŸ’š

                If I make it look easy...It is probably easy

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                • pilouP Offline
                  pilou
                  last edited by

                  Me too πŸ˜„

                  Frenchy Pilou
                  Is beautiful that please without concept!
                  My Little site :)

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                  • thomthomT Offline
                    thomthom
                    last edited by

                    Google are really quick to index this site!
                    I did a search for "Hammersley point set sphere" and this thread came up as #3 already. πŸ˜’

                    Thomas Thomassen β€” SketchUp Monkey & Coding addict
                    List of my plugins and link to the CookieWare fund

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                    • mitcorbM Offline
                      mitcorb
                      last edited by

                      Not busy enough elsewhere, eh tml?
                      Thank you for your talents, also.

                      I take the slow, deliberate approach in my aimless wandering.

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                      • AdamBA Offline
                        AdamB
                        last edited by

                        There you go.

                        http://forums.sketchucation.com/viewtopic.php?f=180&t=30694&p=269864#p269864

                        Developer of LightUp Click for website

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