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    [PLUGIN] Voronoi + Conic Curve

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    • M Offline
      MattC
      last edited by

      Well... I think 2D voronoi package (delauney triangulation by TIG + Voronoi on XY plane + Conic Curve + Convex hull on XY plane) is almost ready.
      Next step will be: (delauney triangulation in 3D + Voronoi 3D + Conic Curve + Convex hull 3D).
      But it is a lot more complicated.
      So it is a bit to early to decide free / paid - but I think donationware ( if You like it - gratify creator) is the way to go.
      Cheers
      Matt

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      • T Offline
        the.pjt
        last edited by

        hello Matt, did you got the Icons ? ... or a more important question: is this plugin still alive ?

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        • M Offline
          MattC
          last edited by

          Hi
          Yes I got it, Thanks a lot, I am a bit busy at my normal work, but plugin is still alive.
          I will try to get updated version online this weekend, but I was already focused on Voronoi2D version 2.0
          Cheers
          Matt

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          • M Offline
            MattC
            last edited by

            @ mitcorb - example : If You have polygon with 4 vertices, You can create 4 sets of points ([0,1,2],[1,2,3],[2,3,0],[3,0,1]).
            You can use those sets of points to create rational bezier spline(http://en.wikipedia.org/wiki/B%C3%A9zier_curve#Rational_B.C3.A9zier_curves) by asigning weight to every point.
            Special case is when You set for first and third point weight = 1 , and weight "w" for second point.

            • when w>1 then created curve is a hyperbole
            • when w=1 then created curve is a parabole
            • when w<1 then created curve is an ellipse (in special case circle)
              Hyperbole, parabole ellipse and circle are known as a conic curves or conic sections , because You can create them by cutting cone with a plane.
              For further read : http://www.cs.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/NURBS/RB-conics.html
              http://en.wikipedia.org/wiki/Conic_section

            If You draw square, and apply coniccurve with weight w = sqrt(2)/2 = 0,7071, You will get a circle.

            @ Pilou - This is an implementation of 3DVoronoi - this is my next step, but at this moment I struggle a bit with a code...

            Matt

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            • D Offline
              dekay
              last edited by

              tanks a lot, your script is very easy to use compared to others.it has been very helpful to me.

              thank you once again..

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              • V Offline
                victor hugo
                last edited by

                Very interesting plugin...
                where can I get the CPOINT creator or a CPOINT plugin?

                Thanks.

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                • cottyC Offline
                  cotty
                  last edited by

                  @unknownuser said:

                  Very interesting plugin...
                  where can I get the CPOINT creator or a CPOINT plugin?
                  Thanks.

                  Here

                  my SketchUp gallery

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                  • pilouP Offline
                    pilou
                    last edited by

                    Why not put in the first post the link for the Delauney3.rb by Tig ?
                    It was not so evident to find it! 😮
                    here the link! 😉

                    Else works fine 😄

                    voro01.jpg


                    voro02.jpg

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

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                    • I Offline
                      ivreich
                      last edited by

                      VoronoiXY Error

                      Hi MattC

                      I'm still having problems creating a simple 2D Voronoi. Have attached the file with the cpoints and the error message.

                      Conic curve seems to work fine...

                      Cheers

                      joel

                      UPDATE: I see what the problem is. It's still the co-linear points. The plugin will not work if any of the points are colinear in either the X or Y axis.

                      Something that can be fixed?


                      SU File


                      Error message

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                      • pilouP Offline
                        pilou
                        last edited by

                        And about Conic Curve
                        Does this possible ?

                        conic_wanted.jpg

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

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                        • pilouP Offline
                          pilou
                          last edited by

                          Hello

                          For the Voronoï (with SU V7 tested) images previous post
                          All works fine except I must click on the Ok Botton for have a voronoï polygon for each new polygon! 😲 😮

                          Tig triangle works for a selection of points in one pass! 👍

                          And for the conic curve : does it possible to have the same for a selection of faces ?
                          Click on each polygon is some tiedious when you have thousand of them!

                          voronoi2.jpg

                          EDIT : About Voronoï xy

                          @unknownuser said:

                          I must click on the Ok Botton

                          Works fine in V8 ! ☀

                          But something must be made for the UNDO !!! 😉
                          Here you must make each CTRL+ Z for each polygon ! 😮

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

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                          • M Offline
                            MattC
                            last edited by

                            Hi Pilou, Hello everybody

                            Currently I am rewriting the whole Voronoi 2D plug-in.
                            It is going painfully slow, but I have a lot of other things on my head right now.
                            Why I am completely redesigning it? Well my understanding of Ruby got a bit better, and also I got some new ideas how to tackle this problem.
                            What I want to accomplish:

                            1. prepare a nice flow chart for a process of creating 2D Voronoi diagram
                            2. based on that define set of standard functions that will be used
                            3. compose final version of Voronoi 2D plug-in
                            • do steps 1-3 with 3D Voronoi
                            • do steps 1-3 with Conic Curve
                            • do steps 1-3 with random point generator (2D and 3D)

                            Shall I succeed then next step would be a "fracture tool" similar to one in Blender.

                            @ Pilou
                            So to create voronoi diagram You have to iterate through the message boxes i=1, i=2 ... etc?
                            I think that that was one of the first complains and I have disabled it in one of later versions. If not I can do it one more time. the same applies to UNDO in one step. Conic curve on all faces in selection was also made, but I don't know if it was made an official release.

                            Your last question is more complicated. Conic curve plug-in was made as a response to the topic in the first post. There You can see that there are multiple curves inside polygons. And all the polygons are convex. So the conic curve , which is a construction based on 3 points (let's say A B and C), is always located inside the smaller angle near the point B. In Your case polygon is Concave and conic curve will go outside. Is it possible to force it inside? Well it is.
                            See explanation of how the conic curve is made in first post. You have to set an offset that will sit well inside, and also play with a weight value. But in this version You cannot set different weights for every vertex. Maybe I will get to that in one of the future releases.

                            Stay tuned for more details. I will try to make a nice blog (possibly later an e-book) about it.

                            Cheers
                            Matt

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                            • pilouP Offline
                              pilou
                              last edited by

                              Cool ! ☀

                              For the OK Button that must be something between V7 V8
                              not works in V7, works in V8

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

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                              • N Offline
                                notareal
                                last edited by

                                MattC, that sounds great! Cannot wait.

                                Welcome to try [Thea Render](http://www.thearender.com/), Thea support | [kerkythea.net](http://www.kerkythea.net/) -team member

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                                • M Offline
                                  MattC
                                  last edited by

                                  So it is officially begonnen:
                                  spin-heads.blogspot.com

                                  Cheers
                                  Matt

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                                  • pilouP Offline
                                    pilou
                                    last edited by

                                    Appetizing first page! ☀

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

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                                    • M Offline
                                      Mra
                                      last edited by

                                      Hey, nice plugin - but I do not know how to use.

                                      Every option simply brings up a cmd.exe for a millisecond and nothing ever happens.

                                      The steps in the OP are unclear to me? How do we first generate the CP points?

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                                      • pilouP Offline
                                        pilou
                                        last edited by

                                        @unknownuser said:

                                        How do we first generate the CP points?

                                        You just draw them as you want!

                                        First image

                                        One rectangle as plane background where you draw as you want the Control points
                                        DON'T erase the "background"
                                        Select points
                                        Call the plug
                                        Select points
                                        Erase points

                                        Second image
                                        Select lines
                                        Call Lattice Maker by Tig
                                        Call Random Painter by Chris Fullmer

                                        Selection Toys for select only points by ThomThom

                                        Lattice Maker by Tig

                                        Random Painter by Chris Fullmer

                                        http://www.3dsaloon.fr/phpbb3/download/file.php?id=3741&mode=view/rokbox.jpg

                                        http://www.3dsaloon.fr/phpbb3/download/file.php?id=3743

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

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                                        • M Offline
                                          Mra
                                          last edited by

                                          Thank you very much for the help.

                                          But that's the first problem I had, I'm not sure of any tool in SketchUp to draw CP points, is this a plugin? I have no issue with the rest of the steps just how to initially draw the points.

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                                          • cottyC Offline
                                            cotty
                                            last edited by

                                            For this, I use the plugin point from Matt666...

                                            my SketchUp gallery

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