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    [Plugin] CenterPointAll.rb

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    • david_hD Offline
      david_h
      last edited by

      I got the Centerpointall.rb. It's a good one , but not exactly doing what I need. It enabled me to do a workaround for my specific case, but I guess what is needed is a script that will find the Radius point of an arc even if SU doesn't recognize it as an arc per se.

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

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      • plot-parisP Offline
        plot-paris
        last edited by

        so basically you need a "geometric shape recognizer".

        that would be a wonderful thing, by the way. imagine you have a complicated curved form consisting of loads of small lines and SketchUp simplifies it into (for example) three curves.

        the plugin could have some correction-freedom settings too. for example if it recognizes two arcs in a shape which connecting bits are almost tangential, SU could correct the position of the connectin point slightly to match a perfect tangent...

        that would be awesome! πŸ˜•

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        • david_hD Offline
          david_h
          last edited by

          Oui! C'est Ca! Where are these RUBY GURUS when you need them? (jk) 😳

          Im sure they don't have anything else to do but respond to my whining. πŸ˜„

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

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          • JClementsJ Offline
            JClements
            last edited by

            When I have time, I often draw over "apparent" arcs and circles because I can then use Entity Info to verify radii of piping and to facilitate the extrusion of smoothed-surfaces and improve exporting .SKP's to other formats.

            I think the bottom line is you'd need a basic script (using the model context or selection) to find series of contiguous segments, then analyze them to determine if they have the characteristics of an arc.

            For instance: are all segments of equal length and are all of their common angles equal (there may be more conditions that I haven't thought of)? If all segments touch one another, then are they a polygon or a circle?

            If such a script can be developed, then it could be used as a common routine called by other scripts such as pipe-along-path or used on intersected geometry. Once the script qualifies the segments, it could then automatically redraw them, make centerpoint guides, etc.

            John | Illustrator | Beaverton, Oregon

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            • david_hD Offline
              david_h
              last edited by

              Yeah. . .what he just said. .. uh Huh. I think

              Anyway. .. I just want to find the Radius point of any curve be it arc or no. anything else, above that . . ..Gravy.

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

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              • plot-parisP Offline
                plot-paris
                last edited by

                JClements, that would be a damn handy tool and a wonderful addition to the weld-script...

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                • W Offline
                  watkins
                  last edited by

                  Dear David_H

                  You can use the protractor to find the centre of an arc or circle. Snap the tool to the mid-point of a segment and then click on the end of that segment (you have a choice of two points). Rotate the protractor 90 degrees to create a construction line along the segment's normal (located at mid-point). Repeat for a second segment. The centre point is marked by the crossing of the construction lines.

                  A ruby script might work in the same way.

                  Activate the tool, and moving either clockwise or anticlockwise (but not both):

                  Click first end point, segment 1
                  Click second end point, segment 1
                  Click third end point, segment 2
                  Click fourth end point of segment 2
                  Ruby computes equations of normals at mid-points of segments 1 and 2
                  Ruby computes coincident point to yield x,y,z value of centre point

                  Variations:

                  Segments 1 and 2 are start and end segments of arc = redraw arc (input = number of segments)
                  Segments 1 and 2 are connected = redraw circle (input = number of segments)

                  I am not a script writer, but the above would seem do-able.

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                  • david_hD Offline
                    david_h
                    last edited by

                    Watkins. Yeah, I had been doing that. I was just hoping for a one-click solution. Cuz I ain't no Ruby Writer Neither. . .sigh! πŸ˜’ But thanks for the input.

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

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                    • J Offline
                      Jim
                      last edited by

                      @unknownuser said:

                      Watkins. Yeah, I had been doing that. I was just hoping for a one-click solution. Cuz I ain't no Ruby Writer Neither. . .sigh! πŸ˜’ But thanks for the input.

                      Dave,

                      You might have more luck if you start a new request thread in the Ruby forum.

                      Hi

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                      • R Offline
                        rosbourne
                        last edited by

                        Thanks.. Now more easier to make center point

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                        • S Offline
                          ship69
                          last edited by

                          Does this video have sound? It's coming out silent on my PC.

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                          • Dave RD Offline
                            Dave R
                            last edited by

                            @ship69 said:

                            Does this video have sound? It's coming out silent on my PC.

                            No. It's a silent video.

                            Etaoin Shrdlu

                            %

                            (THERE'S NO PLACE LIKE)

                            G28 X0.0 Y0.0 Z0.0

                            M30

                            %

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                            • E Offline
                              Einstein
                              last edited by

                              Thanks TIG πŸ˜„

                              This simple tool helps me rotating components around their centerpoints which is quite complicated in SU.

                              It would be even more handy if a created centerpoint was interactive, I mean: changed with scaling and moving component or group it's based on. But I realise that would be also much more complicated code.

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                              • BoxB Offline
                                Box
                                last edited by

                                @einstein said:

                                rotating components around their centerpoints which is quite complicated in SU.

                                To rotate about the midpoint of a group or component, use the rotation handles that appear when you use the Move tool.


                                RotCen.gif

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                                • S Offline
                                  sarkarshomit
                                  last edited by

                                  Can't get it working in sketchup 2018.working fine in skup16, but not in 18...any help if i am doing something wrong!!

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                                  • Dave RD Offline
                                    Dave R
                                    last edited by

                                    @sarkarshomit said:

                                    Can't get it working in sketchup 2018.working fine in skup16, but not in 18...any help if i am doing something wrong!!

                                    Evidently you are doing something wrong. I just installed it in SU2018 and ran it. It works fine. How did you install it? Where did you install it? Do you have Guides set to show in the View menu?
                                    Result of CenterPointAll

                                    Etaoin Shrdlu

                                    %

                                    (THERE'S NO PLACE LIKE)

                                    G28 X0.0 Y0.0 Z0.0

                                    M30

                                    %

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                                    • S Offline
                                      sarkarshomit
                                      last edited by

                                      @dave r said:

                                      @sarkarshomit said:

                                      Can't get it working in sketchup 2018.working fine in skup16, but not in 18...any help if i am doing something wrong!!

                                      Evidently you are doing something wrong. I just installed it in SU2018 and ran it. It works fine. How did you install it? Where did you install it? Do you have Guides set to show in the View menu?
                                      [attachment=0:9qktjmkx]<!-- ia0 -->Screenshot - 5_16_2018 , 5_31_16 AM.png<!-- ia0 -->[/attachment:9qktjmkx]

                                      Thanks for the help.

                                      Strangely in skup16, the plugin shows up in plugins menu named as "set centerpoint".
                                      And in skup18 it shows up in extensions menu as "Add centerpoint".

                                      So finally its working for me. Thanks again.

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                                      • BoxB Offline
                                        Box
                                        last edited by

                                        Sounds like you may have had a different extension installed in 2016. There is one called Set Centerpoint.
                                        Tig's shows for me in 2016 as Add Centerpoint.

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                                        • R Offline
                                          Rastus
                                          last edited by

                                          Hate to appear thick but I can't install CenterPointAll in 2018 (vs 8.0.1...). Where do I need to place the plugin?
                                          Thanks!!

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                                          • TIGT Offline
                                            TIG Moderator
                                            last edited by

                                            Look here
                                            https://sketchucation.com/pluginstore?pln=CenterPointAll
                                            which gives you an RBZ which can be installed in v2018 using Window > Extension Manager > Install... [red-button]

                                            No need to find the Plugins folder etc...

                                            Almost all Plugins which include an old RB file in their thread will have an entry in the PluginStore, giving an easily installed RBZ for use in all current versions of SketchUp...
                                            Even the now often unsupported v8 had these RBZ capabilities in later MRs,,,

                                            TIG

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