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    [solved!!]onMouseMove show component instance

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    • TIGT Offline
      TIG Moderator
      last edited by

      @kdasilva said:

      no totally error free BUT..i just made it work by.....(drumroll)... changing .transform!() to .move!()

      I don't know why it worked...i just did it on a whim, but presto!

      thanks for all the help, this was driving me crazy...so much thesis to do, but I tend to obsess on things I cant solve.

      cheers
      Korbin

      I was just going to suggest .move! instead of .transform! as it's 'outside of the undo stack'... [honest!]
      Glad it's working at last... πŸ˜„

      TIG

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      • Chris FullmerC Offline
        Chris Fullmer
        last edited by

        (I'm not sure that there is a question in this - its more of me just talking out loud).

        I'm trying to do the same, and I'm getting the problem that once I attache the component to the cursor, then the ip point easily grabs onto the component when the mouse moves. And sine the component is closer to the camera, than the center of the component that is attached tot he cursor, then the ip jumps to the closer position, moving the whole component closer. And repeats. So every time I start move the mouse,t he component gets closer and closer to the camera until it clips out of view, and the mouse can reach geometry in the model to reset the ip back to the model.

        I have not thought much about this yet, but I was wondering how you guys got it to work? It just doesn't seem to do the trick for me. I was really hoping it would be easy to place a component in the model, and have the component attach to the cursor.

        Its not the end of the world if it turns out to not work, I don't truly need to show the component.

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

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        • thomthomT Offline
          thomthom
          last edited by

          Do you need a custom tool? Can you not use model.place_component ?

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

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          • Chris FullmerC Offline
            Chris Fullmer
            last edited by

            I think I do - I need to know what edge in what group it was placed on so I can break the edge and insert new geometry. I can do all that easy enough if I do it with my own tool. But I'm scared of relying on too many observers. I've had bad luck with them already, and I know you (thom) have had many projects ruined by them.

            So I think I need my own tool. Its working ok though, I'm actually drawing lines to the viewport that represent the component I'm placing. I can attach that to the mouse easy enough, and it looks pretty cool.

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

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            • Dan RathbunD Offline
              Dan Rathbun
              last edited by

              Hmmm... would have been nice if the method returned a ref to the newly placed instance (instead of the model object itself*****.) Then you might have been able to easily get the instances origin point and go from there.

              Just weird that a ref to the placed instance is the obvious preferred return for a method like this. Sometimes I just do not understand how the obvious can be so often overlooked.

              ***** The API doc is in error when it says it returns nil.

              I'm not here much anymore.

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              • Dan RathbunD Offline
                Dan Rathbun
                last edited by

                Ok.. you could call:
                lastdefn = defn.instances.last
                after using model.place_component( defn, false )

                Wait... weirdness, the method returns immediately, BEFORE the instance is actually placed. (It spits out a redraw time to $stdout after the instance is placed.) The move component tool does not exit with a false 2nd arg, but remains in the move tool, and the user could inadvertently move the instance again.
                It would be nice if this method took a block to be run after the instance was placed.

                I'm not here much anymore.

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                • thomthomT Offline
                  thomthom
                  last edited by

                  Agree 100% with you Dan.

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

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                  • F Offline
                    fatihbarut
                    last edited by

                    I think eventhough the title has "Solved" the last solution is missing

                    Here is one of them.

                    
                    model = Sketchup.active_model
                    ent = model.entities
                    sel = model.selection
                    
                    defn = Sketchup.active_model.definitions
                    
                    def onMouseMove(flags, x, y, view)
                      return nil if not @instance ### only works when instance is set
                      @ip.pick(view, x, y)
                      if @ip != @ip1
                        view.invalidate if( @ip.display? or @ip1.display? )
                        @ip1.copy!(@ip)
                        view.tooltip=@ip1.tooltip
                        @instance.transform!(Geom;;Transformation.new(@ip1.position))
                      end
                    end
                    
                    def onLButtonDown(flags, x, y, view)
                      return nil if not @instance
                      @ip1.pick(view, x, y)
                      if @ip1.valid?
                        @instance.transform!(Geom;;Transformation.new(@ip1.position))
                        @instance=nil ### un-sets instance
                      end
                    end
                    
                    lastdefn = defn[0] # ! I had just one definition in my component definition list therefor defn[0] worked well for me
                    model.place_component( lastdefn , false )
                    
                    
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                    • J Offline
                      Jim
                      last edited by

                      As has been discovered already in this thread, you probably want to use @instance.move!(..) rather than .transform!(..) so as not to disturb the Undo stack.

                      Another idea might be to use the opengl draw commands to draw a proxy object instead of actually moving an Instance with the mouse.

                      Hi

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                      • Chris FullmerC Offline
                        Chris Fullmer
                        last edited by

                        @jim said:

                        Another idea might be to use the opengl draw commands to draw a proxy object instead of actually moving an Instance with the mouse.

                        That's what I ended up doing, which was disappointing to me, but still looks pretty cool.

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

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                        • K Offline
                          kaas
                          last edited by

                          I'm trying out several methods for a plugin-user to define a plane. Picking 3 points works but maybe more easy would be to use a component plane thats glues to the underlying objects.

                          Using the code from this thread I can attach a component-plane to the mouse pointer.

                          behavior = @plane_def.behavior behavior.snapto = SnapTo_Arbitrary behavior.is2d = true

                          Adding this code makes the component-plane glue to objects but only outside the ruby code as it seems. The glue works if the component is picked from the component browser OR if the component is added with model.place_component componentdefinition, repeat. Then I would have to add an observer to have the code pick it up again.

                          Is there any way around this?

                          edit: changed 'listener' to 'observer'

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                          • tt_suT Offline
                            tt_su
                            last edited by

                            In addition to changing the behaviour you need to use glued_to= to specify what it should be glued to.

                            ...or maybe I didn't quite understand what you where asking for..?

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                            • K Offline
                              kaas
                              last edited by

                              @tt_su said:

                              In addition to changing the behaviour you need to use glued_to= to specify what it should be glued to.

                              Hello Thomas, Thanks for your reply.

                              I want the component to glue to any face in the model, just like a normal glue-ing component would do, if inserted from the component browser.

                              Funny part is: when using the code below the instance doesn't glue. If I manually pick the component afterwards from the component browser and place it, it does glue...??

                              def activate
                              	@model = Sketchup.active_model
                              	@definitions = @model.definitions
                              	@entities = @model.entities	
                                      @ip = Sketchup;;InputPoint.new
                              	@ipP = Sketchup;;InputPoint.new	
                              		
                              	size = 20
                              	pm = Geom;;PolygonMesh.new
                              	pm.add_point([-size, -size, 0]) # 1
                              	pm.add_point([-size, size, 0]) # 2
                              	pm.add_point([size, size, 0]) # 3
                              	pm.add_point([size, -size, 0]) # 4
                              	pm.add_polygon(1,3,2,4)
                              	
                              	smooth_flags = Geom;;PolygonMesh;;NO_SMOOTH_OR_HIDE
                              	mb_rundim_plane_def = @definitions.add("mb_runDimPlane");
                              	dim_plane = mb_rundim_plane_def.entities.add_faces_from_mesh(pm, smooth_flags)
                              	behavior = mb_rundim_plane_def.behavior
                              	behavior.snapto = SnapTo_Arbitrary
                              	behavior.is2d = true
                              	
                              	@instance = @entities.add_instance(mb_rundim_plane_def, ORIGIN)
                              end # def activate
                              
                              def onMouseMove(flags, x, y, view)
                                @ip.pick(view, x, y)
                                if @ip != @ipP && @instance
                                  view.invalidate if( @ip.display? or @ipP.display? )
                                  @ipP.copy!(@ip)
                                  view.tooltip=@ipP.tooltip
                                  @instance.move!(Geom;;Transformation.new(@ipP.position))
                                end
                              end
                              
                              def onLButtonDown(flags, x, y, view)
                                return nil if not @instance
                                @ipP.pick(view, x, y)
                                if @ipP.valid?
                                  @instance.move!(Geom;;Transformation.new(@ipP.position))
                                  @instance=nil
                                end
                              end
                              
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                              • TIGT Offline
                                TIG Moderator
                                last edited by

                                You must tell SketchUp which face to glue it onto.
                                You could do that by using a ' pickhelper' which is activated 'on button up'... which finds the best face-match http://www.sketchup.com/intl/en/developer/docs/ourdoc/pickhelper#picked_face
                                And then use:
                                @instance.glued_to=some_face_that_you_specify_from_pickhelper
                                See http://www.sketchup.com/intl/en/developer/docs/ourdoc/componentinstance#glued_to=

                                TIG

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                                • K Offline
                                  kaas
                                  last edited by

                                  Hi TIG,

                                  Thanks for your suggestion. I changed the code, drew a simple rectangle and pushed-pulled it. After picking it throws an error on the 'glue-line':
                                  Error: #<ArgumentError: Can only glue to something in the same component>
                                  Doesn't make sense to me. They should be both in the same context: Sketchup.active_model.entities. Google-ing this error results in another thread you were active in http://sketchucation.com/forums/viewtopic.php?f=180%26amp;t=54813 but no help there. Any suggestions anyone?

                                  def onLButtonUp(flags, x, y, view)
                                  	ph = view.pick_helper
                                  	ph.do_pick(x, y)
                                  	face = ph.picked_face
                                  	@instance.move!(Geom;;Transformation.new(@ipP.position))
                                  	view.invalidate
                                  	if face
                                  		@instance.glued_to=face
                                  	end	
                                  end
                                  
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                                  • TIGT Offline
                                    TIG Moderator
                                    last edited by

                                    You need to set ents=model.active_entities and add the instance to that entities context.
                                    BUT if the face you pick is inside another context you cannot glue to it.
                                    You can check that by using instance.parent.entities==face.parent.entities

                                    Why not use the way that mimics the native component placer - http://www.sketchup.com/intl/en/developer/docs/ourdoc/model#place_component

                                    You already have the gluing definition, so you can erase the placed instance/code... and there is no need to then find the face at all ?

                                    TIG

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                                    • K Offline
                                      kaas
                                      last edited by

                                      @tig said:

                                      ..Why not use the way that mimics the native component placer - http://www.sketchup.com/intl/en/developer/docs/ourdoc/model#place_component...

                                      I gave your suggestion a go. Instead of adding the component to the mouse I used @model.place_component ... and have the code pick it up again with an observer.

                                      Problem I now face: the newest added instance doesn't show up if I look for it. My guess is: its returning the definition info instead.

                                      I tried:

                                      @entities.each {|e|
                                         puts e.to_s
                                         next unless e.is_a?(Sketchup;;ComponentInstance)
                                         puts "instance; #{e.to_s}"
                                         puts "origin; #{e.transformation.origin}"
                                      }
                                      
                                      

                                      OR

                                      	
                                         instance = @definitions[instance_def_name]
                                         puts "instance; #{instance.instances[0].to_s}"
                                         puts "origin; #{instance.instances[0].transformation.origin}"
                                      
                                      

                                      Only if I add another (and another) instance, all but the last one are found (see animated gif).

                                      I must be missing something elementary... Any suggestions?


                                      problem.gif

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                                      • TIGT Offline
                                        TIG Moderator
                                        last edited by

                                        You already have a reference to the instance called @instance - so, without re-coding [so you make a definition rather than an instance], you can get a reference to the instance's definition thus: @defn=@instance.definition, then immediately erase the instance with @instance.erase!...
                                        And then you NOW use @model.place_component(@defn) πŸ˜•

                                        TIG

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                                        • K Offline
                                          kaas
                                          last edited by

                                          @tig said:

                                          You already have a reference to the instance called @instance - so, without re-coding [so you make a definition rather than an instance], you can get a reference to the instance's definition thus: @defn=@instance.definition, then immediately erase the instance with @instance.erase!...
                                          And then you NOW use @model.place_component(@defn) πŸ˜•

                                          ...? I changed the code a bit compared what I posted a few posts above. Now, at the start of model.place_component for the first time there is no instance in the model, only a definition. So I'm not sure what I should delete here.

                                          I ask myself: is the result of Sketchup.active_model.place_componentthe same context as Sketchup.active_model.entities?

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                                          • K Offline
                                            kaas
                                            last edited by

                                            Still trying to figure it out. Tested it by putting the code directly into the Ruby Console and putting it into a rb-file.

                                            Try with a freshly started Sketchup 2014 and delete 'Sophie' (but leave her in the component definitions). First I executed in the Ruby Console:

                                            
                                            @model = Sketchup.active_model
                                            @ents = @model.entities
                                            @defs = @model.definitions
                                            inst = @defs["Sophie"]
                                            @model.place_component inst,false
                                            
                                            

                                            Place her anywhere but not on the origin 0,0,0

                                            Second run this:

                                            
                                            @ents.each {|e|
                                            next unless e.is_a?(Sketchup;;ComponentInstance)
                                            puts e.transformation.origin
                                            }
                                            
                                            

                                            You get the proper coordinates of Sophie.

                                            Now I delete all Sophies but leave her in the component definitions.
                                            I wrap the above code into a plugin. I need to add an observer so the code can pick it up again (place_component breaks the code). I load it and start it with: MB_place_instance.activate

                                            The first placed instance always returns 0,0,0 as the origin. Add another one (activate again) and it returns the origin of the first added instance etc... Looks like its returning the definition and not the placed instance.

                                            There must be some logic in it but I fail to see it...

                                            
                                            require 'sketchup.rb'
                                            module MB_place_instance
                                            
                                            	class MyDefObserver < Sketchup;;DefinitionObserver ### create an observer (place_component breaks the code and returns to SU) ###
                                            	   def onComponentInstanceAdded(definition, instance)
                                            		 puts "observer has fired; " + instance.to_s
                                            		 MB_place_instance.refire(instance) # go back to the tool
                                            	   end
                                            	end
                                            
                                            	def self.activate
                                            		@model = Sketchup.active_model
                                            		@ents = @model.entities
                                            		@defs = @model.definitions
                                            		inst = @defs["Sophie"]
                                            		@observer = MyDefObserver.new
                                            		@model.definitions[0].add_observer(@observer)
                                            		@model.place_component inst,false
                                            	end #def
                                            	
                                            	def self.refire(instance)
                                            		@defs[0].remove_observer(@observer) # delete the observer
                                            		@observer = nil # delete the observer in case previous method fails
                                            		GC.start # collect garbage
                                            		@ents.each {|e|
                                            			next unless e.is_a?(Sketchup;;ComponentInstance)
                                            			puts "looking with each; #{e.transformation.origin}"
                                            		}	
                                            		puts "directly adressing passed instance; #{instance.transformation.origin}"
                                            	end #def
                                            	
                                            end #module
                                            
                                            ### start in RubyConsole with; MB_place_instance.activate
                                            
                                            
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