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    Question about order in selection

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    • Chris FullmerC Offline
      Chris Fullmer
      last edited by

      Nah, that is normal. You can't be certain of the selection order. You can also copy and move a line, and that might change its order in the selection set too from what I've seen.

      Chris

      Lately you've been tan, suspicious for the winter.
      All my Plugins I've written

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      • TIGT Offline
        TIG Moderator
        last edited by

        I think there's no consistent logic to their order. It will often follow their creation time but only approximately and not reliably.
        In a tool you need to get the user to pick them in order and then add these to an array/hash for processing later...
        Perhaps you could get their IDs and sort by those as I think they are perhaps based on a 'time-stamp'?
        Why is the selected order important to you ? πŸ˜•

        TIG

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        • PixeroP Offline
          Pixero
          last edited by

          @tig said:

          Why is the selected order important to you ? πŸ˜•

          I want to do different things with them so I need to be sure its the first or the second selected entity.

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          • TIGT Offline
            TIG Moderator
            last edited by

            Can't your Tool ask the user to pick the first and then the second thing ?
            Then you are sure...
            If the things are different - e.g. a face and a group it's easy to decide which is which. Or are both 'things' the same type of entity ?

            TIG

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            • PixeroP Offline
              Pixero
              last edited by

              I started out trying with the script asking the user to select first and then second entity but workflow wise I think it would be more efficient to just select them and press the script button. Yes they are the same type. I have given the grouped entities names though.

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              • TIGT Offline
                TIG Moderator
                last edited by

                If they are always groups and they have consistent names it's easy to sort...
                Assuming obj has already passed an 'is_a_group' test then

                if obj.name=="aaa1"
                  #do this
                elsif obj.name=="aaa2"
                  #do that
                end#if
                

                Even similar names are useful as you can look for patterns

                if obj.name=~/1$/
                  #do this
                elsif obj.name=~/2$/
                  #do that
                end#if
                

                Here we look for names ending in '1' or '2' - the rest of the name can vary......

                TIG

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                • PixeroP Offline
                  Pixero
                  last edited by

                  Thanks will try this.

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                  • B Offline
                    bigcatln
                    last edited by

                    I am also in the same trouble
                    My solution is: select firt, then press the tool button to active my tool then use the pickhelper do another select operation,press return key to finish

                    It is not a nice solution,because I found it is hard to do a box crossing selection by ruby

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                    • JuantxoJ Offline
                      Juantxo
                      last edited by

                      That is the code I use, but I don't like too much use observers.
                      If someone knows better solution...

                      
                      require 'sketchup'
                      
                      class MySelectionObserver < Sketchup;;SelectionObserver
                      	@@sel2_ord=[]
                      	
                      	def initialize()
                      		@s1=[]
                      		@s2=[]
                      	end
                      				
                      	def onSelectionBulkChange(selection)
                      		@@sel2_ord=[]
                      		if selection.length==1 then  @s1=selection.collect{|el| el}; @s2=[] end
                      		if selection.length==2 then  
                      		@s2=selection.collect{|el| el}
                      				if @s2.include?(@s1[0]) then
                      				@s2.delete(@s1[0])
                      				@@sel2_ord=[@s1[0],@s2[0]];
                      				@s1=[];@s2=[]
                      			end	
                      		end
                      	end
                      
                      	def onSelectionCleared(selection)
                      	@s1=[]
                      	@s2=[]
                      	@@sel2_ord=[]
                      	end
                      	
                      	def self.sel2_ord()
                      		return @@sel2_ord
                      	end
                      	
                      end
                        
                      	 
                      if( not file_loaded?(__FILE__) )
                          bool_2d_obs = MySelectionObserver.new()
                      	Sketchup.active_model.selection.add_observer(bool_2d_obs )
                      	file_loaded(__FILE__)	 
                      end	 
                      
                      #To find out the two objects selected in order,  write in ruby command window 
                      #p(MySelectionObserver.sel2_ord)
                      
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                      • JuantxoJ Offline
                        Juantxo
                        last edited by

                        I've had the same problem,
                        I need to be sure what is the first or the second selected entity with the mouse (the two have the same class).
                        I've used SelectionObserver (onSelectionBulkChange, onSelectionCleared) storing selection entities in two variables,
                        one with first click and the other with next click. So, comparing variables I can find out what is first entity and second.
                        I'm not very sure if it is the right form...but works.

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                        • Chris FullmerC Offline
                          Chris Fullmer
                          last edited by

                          If you are using a tool, then just have an array that holds the selected objects and everytime the user clicks the left mouse button, just add whatever they are hovered over to your selection array.

                          Then you always know what order they selected things in. And if you only want them to select 2 things, then once they select that second object, then your tool should continue to process the selected objects instead of allowing more selections.

                          Lately you've been tan, suspicious for the winter.
                          All my Plugins I've written

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                          • JuantxoJ Offline
                            Juantxo
                            last edited by

                            Yes, it's a good way, but I'm looking something to know the order of selection tool, not the order of my own tool.
                            Like in "Solid tools" toolbar.
                            In "Solid tools" you can use the selection tool and substract two entities, second entity will be substracted from first entity selected. Solid tools knwos the order you pick the entities with selection tool.

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                            • thomthomT Offline
                              thomthom
                              last edited by

                              @juantxo said:

                              Yes, it's a good way, but I'm looking something to know the order of selection tool, not the order of my own tool.
                              Like in "Solid tools" toolbar.
                              In "Solid tools" you can use the selection tool and substract two entities, second entity will be substracted from first entity selected. Solid tools knwos the order you pick the entities with selection tool.

                              Solid Tools doesn't make use of the native Select tool. It's a custom variant.

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

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                              • JuantxoJ Offline
                                Juantxo
                                last edited by

                                Solid tools has its own tool, but also, you can use selection tool, pick two entities and substract them. And order its detected.
                                So, order of selection tool is detected by "solid tools".

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                                • DavidBoulderD Offline
                                  DavidBoulder
                                  last edited by

                                  So, I was also hoping for something like this without using a custom tool. As an alternative I'm thinking of re-sorting the selection array based one some logic. In this case I want to take a bunch of horizontal adjacent surfaces, and turn them into room numbers. As is they jump all over the place. I was going to allow the user to click to define, but another solution could be to start with bottom left corner and work my way around. Here is the logic I was thinking of.

                                  • Set the face with lowest "x" and then "y" as a tiebreaker as first object (they all have same z)
                                  • Next find the adjacent face with the lowest "x" and then "y" as tiebreaker
                                  • keep repeating step above, excluding spaces that have already been added to new array.
                                  • In many cases I can step through all faces without painting myself in a corner, but in some cases, I may have gotten to a situation where there are no adjacent faces, but not all faces have been added to the new array. If i do get painted into a corner, I would just go back to step 1 with remaining faces.

                                  Has anyone done any programmatic re-ordering of the selection similar to this?

                                  --

                                  David Goldwasser
                                  OpenStudio Developer
                                  National Renewable Energy Laboratory

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                                  • Dan RathbunD Offline
                                    Dan Rathbun
                                    last edited by

                                    Here's a start. Rename the module or cut & paste the proxy class block into one of your modules.

                                    
                                    module Sort
                                    
                                      class << self
                                      
                                        def sort_faces_by_vertex()
                                          @sel = Sketchup.active_model.selection.to_a
                                          @sel.delete_if {|e| not e.is_a?(Sketchup;;Face) }
                                          @sel.sort! {|a,b|
                                            ([a.vertices.min{|v1,v2| v1.position.x <=> v2.position.x }.position.x,
                                              a.vertices.min{|v1,v2| v1.position.y <=> v2.position.y }.position.y] <=>
                                             [b.vertices.min{|v1,v2| v1.position.x <=> v2.position.x }.position.x,
                                              b.vertices.min{|v1,v2| v1.position.y <=> v2.position.y }.position.y] )
                                            }
                                        end
                                    
                                        def assign_room_nums_to_faces()
                                          sbv = sort_faces_by_vertex()
                                          sbv.each_with_index {|face,i|
                                            dict = face.attribute_dictionary('Properties',true)
                                            dict['name']= "Room #{(i+1).to_s}"
                                          }
                                        end
                                      
                                      end # proxy class
                                      
                                    end # module Sort
                                    

                                    I'm not here much anymore.

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