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[Plugin] Select by Z

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  • E Offline
    EarthMover
    last edited by 31 Aug 2009, 23:41

    Thanks TIG! It indeed works. I tried this for adding to the menu as an option, but it didn't work. What am I missing?

    def selectfacesbyz()
      model=Sketchup.active_model
      ss=model.selection; face=ss[0]; ss.clear
      model.active_entities.each{|e|ss.add(e)if e.class==Sketchup;;Face and e.bounds.min.z==face.bounds.min.z}
    ### Menu ###
        UI.menu("Plugins").add_item("Select Faces by Z"){selectfacesbyz}
    end#if
    

    3D Artist at Clearstory 3D Imaging
    Guide Tool at Winning With Sketchup
    Content Creator at Skapeup

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    • T Offline
      TIG Moderator
      last edited by 1 Sept 2009, 09:09

      Put the menu OUTSIDE of the def...end thus:

      
      def selectfacesbyz()
        model=Sketchup.active_model
        ss=model.selection; face=ss[0]; ss.clear
        model.active_entities.each{|e|ss.add(e)if e.class==Sketchup;;Face and e.bounds.min.z==face.bounds.min.z}
      end#def
      UI.menu("Plugins").add_item("Select Faces by Z"){selectfacesbyz} if not file_loaded?(File.basename(__FILE__))
      file_loaded(File.basename(__FILE__))
      

      The file_loded bit ensures it only loads into menu if you reload the Ruby manually later...

      You're now a scripter ! πŸ˜‰

      Next: test if ss[0], test if ss[0] is a Face etc and if not UI.messagebox()... "Must Select a Face First.."

      TIG

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      • E Offline
        EarthMover
        last edited by 1 Sept 2009, 22:35

        @tig said:

        Next: test if ss[0], test if ss[0] is a Face etc and if not UI.messagebox()... "Must Select a Face First.."

        Would this work?

        
        def selectfacesbyz
        	mo=Sketchup.active_model()
        	ss = mo.selection()
        
        	if ss.empty? 
        		UI.messagebox("Must Select a Face First")
        	else
        		mo.start_operation "selectfacesbyz"
        
        

        3D Artist at Clearstory 3D Imaging
        Guide Tool at Winning With Sketchup
        Content Creator at Skapeup

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        • T Offline
          TIG Moderator
          last edited by 1 Sept 2009, 22:43

          Yes, that's OK.
          But I'd just use this:

          
          ###...
          if ss.empty? or not ss[0].class==Sketchup;;Face
            UI.messagebox("Must Select a Face First...")
            return nil
          end
          ### then rest of code assuming it does get past this test...
          

          'return nil' simply stops the process...
          Note how I also added a test to see if the first thing in the selection is not a Face...
          You will winkle a script out of me bit by bit... πŸ˜‰

          TIG

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          • E Offline
            EarthMover
            last edited by 1 Sept 2009, 23:28

            So kind my friend. Thanks for making me work for it! I'm looking through code to try and determine how to also have the selection apply to edges, but the variables for edges are greater. If I could figure out how to apply it to just work with edges that exist solely on an xy plane....

            3D Artist at Clearstory 3D Imaging
            Guide Tool at Winning With Sketchup
            Content Creator at Skapeup

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            • T Offline
              TIG Moderator
              last edited by 1 Sept 2009, 23:38

              edge.start.position.z==edge.end.position.z
              

              is 'flat'
              you could also get the lower value with

              edge.bounds.min.z
              

              ?

              TIG

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              • E Offline
                EarthMover
                last edited by 2 Sept 2009, 00:40

                ss=model.selection; face=ss[0]; ss.clear

                So I assume this lines tells sketchup if the selection is a face then process this line

                model.active_entities.each{|e|ss.add(e)if e.class==Sketchup::Face and e.bounds.min.z==face.bounds.min.z}

                And this says to add to the selection all other faces with the with z bounds.

                To translate this to apply for edges, is it as simple as changing the name face to edges and defining it further with the xy constraint code you provided? I tried it a few different ways and I keep getting errors.

                3D Artist at Clearstory 3D Imaging
                Guide Tool at Winning With Sketchup
                Content Creator at Skapeup

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                • T Offline
                  TIG Moderator
                  last edited by 2 Sept 2009, 08:03

                  Correct - test that the entities are Edges...

                  e.class==Sketchup;;Edge
                  

                  Then test to see if same height as edge=ss[0] ###you need to have got edge's min.z...
                  There are several ways of testing for entity types - the [probable] fastest is e.class==Sketchup::Edge but there are also
                  e.is_a?("Edge") e.kind_of?("Edge") e.typename=="Edge"
                  etc...
                  Now you can also try code to manipulate a selection so that say only edges or faces are left in it...
                  For example:

                  ss.each{|e|ss.remove(e) if not e.class==Sketchup;;Face}### leaves only faces
                  ### OR
                  ss.each{|e|ss.remove(e) if not e.class==Sketchup;;Edge}### leaves only edges
                  

                  TIG

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                  • E Offline
                    EarthMover
                    last edited by 2 Sept 2009, 11:20

                    def selectedgesbyz()
                      model=Sketchup.active_model
                      ss=model.selection; Edge=ss[0]; ss.clear
                      model.active_entities.each{|e|ss.add(e)if e.class==Sketchup;;Edge and e.bounds.min.z==edge.start.position.z==edge.end.position.z}
                    end#if
                    UI.menu("Plugins").add_item("Select Edges by Z"){selectedgesbyz} if not file_loaded?(File.basename(__FILE__))
                    file_loaded(File.basename(__FILE__))
                    

                    Got this so far. Something is wrong in the syntax. Can you show me the error to my ways. I have no idea how the language works, but it's been a good mental exercise and I'd love to learn more. Thanks for your help.

                    3D Artist at Clearstory 3D Imaging
                    Guide Tool at Winning With Sketchup
                    Content Creator at Skapeup

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                    • B Offline
                      BTM
                      last edited by 2 Sept 2009, 11:50

                      @earthmover said:

                      def selectedgesbyz()
                      >   model=Sketchup.active_model
                      >   ss=model.selection; Edge=ss[0]; ss.clear
                      >   model.active_entities.each{|e|ss.add(e)if e.class==Sketchup;;Edge and e.bounds.min.z==edge.start.position.z==edge.end.position.z}
                      > end#if
                      > UI.menu("Plugins").add_item("Select Edges by Z"){selectedgesbyz} if not file_loaded?(File.basename(__FILE__))
                      > file_loaded(File.basename(__FILE__))
                      

                      Got this so far. Something is wrong in the syntax. Can you show me the error to my ways. I have no idea how the language works, but it's been a good mental exercise and I'd love to learn more. Thanks for your help.

                      Well, first problem is that you capitalized edge in edge=ss[0]. Second, you can't have something like 'if a==b==c'. You have to seperate it into 'if a==b and a==c'. Here's a working example.

                      def selectedgesbyz()
                        model=Sketchup.active_model
                        ss=model.selection; edge=ss[0]; ss.clear
                        model.active_entities.each{|e|ss.add(e)if e.class==Sketchup;;Edge and (e.bounds.min.z)==(edge.start.position.z) and (e.bounds.min.z)==(edge.end.position.z)}
                      end#if
                      UI.menu("Plugins").add_item("Select Edges by Z"){selectedgesbyz} if not file_loaded?(File.basename(__FILE__))
                      file_loaded(File.basename(__FILE__))
                      
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                      • T Offline
                        TIG Moderator
                        last edited by 2 Sept 2009, 21:40

                        Thanks - BTM ... all variables must start with a lower-case letter and test 'x==y and z==a' are both the correct way forward... We'' make a scripter out of EarthMover yet πŸ˜†

                        TIG

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                        • E Offline
                          EarthMover
                          last edited by 2 Sept 2009, 23:41

                          Thanks BTM - that makes sense and I follow the logic behind the code. Perhaps I will try and find time to learn the language. I am good at obsessing and not so good at multi-tasking, so it may have to wait till the snow is falling and my work slows down.

                          Regarding the script, it indeed is working. However, it is not properly defining the edges end bounds. The script is selecting any edge which has one of the their bounds (verticies) corresponding with the selection, so it is thus selecting also vertical lines and diagonal lines who's start bounds is on the Z in relevance to the selection. Any suggestions for further defining the end bounds so that the script will only select lines only completely on the same XY plane as the selection?

                          3D Artist at Clearstory 3D Imaging
                          Guide Tool at Winning With Sketchup
                          Content Creator at Skapeup

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                          • B Offline
                            BTM
                            last edited by 3 Sept 2009, 01:07

                            @earthmover said:

                            Thanks BTM - that makes sense and I follow the logic behind the code. Perhaps I will try and find time to learn the language. I am good at obsessing and not so good at multi-tasking, so it may have to wait till the snow is falling and my work slows down.

                            Regarding the script, it indeed is working. However, it is not properly defining the edges end bounds. The script is selecting any edge which has one of the their bounds (verticies) corresponding with the selection, so it is thus selecting also vertical lines and diagonal lines who's start bounds is on the Z in relevance to the selection. Any suggestions for further defining the end bounds so that the script will only select lines only completely on the same XY plane as the selection?

                            Ah, here:

                            def selectedgesbyz()
                              model=Sketchup.active_model
                              ss=model.selection; edge=ss[0]; ss.clear
                              model.active_entities.each{|e|ss.add(e)if e.class==Sketchup;;Edge and (edge.start.position.z)== (edge.end.position.z) and (e.bounds.min.z)==(edge.start.position.z) and (e.bounds.max.z)==(edge.start.position.z)}
                            end#if
                            UI.menu("Plugins").add_item("Select Edges by Z"){selectedgesbyz} if not file_loaded?(File.basename(__FILE__))
                            file_loaded(File.basename(__FILE__))
                            
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                            • E Offline
                              EarthMover
                              last edited by 3 Sept 2009, 01:37

                              Thanks BTM! It's working great. I see defining the max bounds for the edges was the trick!

                              3D Artist at Clearstory 3D Imaging
                              Guide Tool at Winning With Sketchup
                              Content Creator at Skapeup

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                              • C Offline
                                conconbrr
                                last edited by 7 Aug 2010, 11:55

                                Hello,

                                I was searching for long for such a plugin. So, first of all thanks for it, it's quite useful to select all the contour lines at one level (topography).

                                I just wondered if it is possible to make a small improvement on the execution procedure.

                                In addition of the current method (select one edge or face and then execute the plugin), could it be possible to execute the plugin first and then enter a Z value on the VCB (I don't know if the name is correct, the little box on the right bottom πŸ˜‰) and finally validate with "enter"?

                                In order to keep the current method, the general procedure could be:

                                1. Execute the plugin
                                2. Enter a value on the VCB OR select an edge or a face
                                3. Push "enter"

                                At each step some short information could be displayed on the status bar.

                                I just discover ruby and its power and unfortunately I don't really have the time to learn it so that I can make this modification.

                                Thank you

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                                • R Offline
                                  ricomon35
                                  last edited by 2 Apr 2022, 02:51

                                  Any chance to get a rbz version that can b installed in 2019 or higher?

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                                  • BoxB Offline
                                    Box
                                    last edited by 2 Apr 2022, 11:55

                                    The version in the extension store by Tig works in newer versions.

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