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    [Plugin] FaceSplit v1.0.3

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    • G Offline
      glro
      last edited by

      The purpose of such a plugin may be purely graphical, and all the options mentioned are interesting

      There is another purpose possible
      http://www.spatial.com/products/3d-mesh

      "3D Mesh provides automatic mesh generation for curves, surfaces (triangle and quadrilateral) and volumes (tetrahedral)"

      sketchup is not a real 3d software, since a volume is only a space closed by surfaces

      Would it be possible to write a plugin that would do something similar to what 3d mesh does, by drawing lines on the surfaces and between the surfaces

      3d mesh may follow different patterns
      http://www.ansys.stuba.sk/html/guide_55/g-mod/GMOD7.htm

      This mesh could be exported to a structural analysis software

      Might be related to Voxelize
      http://sketchucation.com/forums/viewtopic.php?t=36063

      a lot of work, though...

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      • iichiversiiI Offline
        iichiversii
        last edited by

        excellent, ill be using that ๐Ÿ˜„
        Thanks for sharing ๐Ÿ‘

        Bring on the Rain...

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        • T Offline
          tomot
          last edited by

          very nice! ๐Ÿ‘
          I was thinking of an added option also: We now have split from vertex, can we add split from midpoint?

          [my plugins](http://thingsvirtual.blogspot.ca/)
          tomot

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          • renderizaR Offline
            renderiza
            last edited by

            Warning!
            The examples shown below are not features the current version support. These are ideas for possible future updates so please don't be confused by it. ๐Ÿ˜‰

            From vertices to centeroid (Current function of plugin)

            Currently the plugin has no problem when dealing with multiple faces because the existing edges are no sliced. We only add new vertex in center of geometry and reuse the existing face vertices after that.

            From medians to centeroid

            In this case we do split the existing edges in half and that cause effect we see in the 3rd row of the image. Each face will exponentially increase the number of edges in which the script will divide causing different results each time.

            The example in the 2nd row of the image was able to maintain the same amount of edges per face because each color represent a group. Notice none of the same color groups can touch each other.

            http://s9.postimg.org/4w3s8mc9r/post.png

            Conclusion
            Will have to figure out a way to reproduce the results in the 2nd row of image without having to make multiple groups. Not sure how at the moment but maybe if I open this to discussion in the development forum it can get solved quickly.

            When I saw the results on row number 3 of image I sort of like what I saw. Maybe this effect is what someone might want who knows. ๐Ÿ˜•


            glro: That would be ideal for the plugin to reach to that level but first I need to figure out simple stuff like the ones mentioned above. Thanks for your input really appreciate it! ๐Ÿ‘

            iichiversii: Hey long time no see!!! Glad you found a use for it. ๐Ÿ‘

            tomot: Yes above I tried demonstrated some of the issues to solve before adding the feature of splitting from medians to centroid.

            [url=https://www.sketchupcode.com/:z3kqsidd]My Extensions ...[/url:z3kqsidd]

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            • TIGT Offline
              TIG Moderator
              last edited by

              No need to group ?
              Collect all of the faces.
              Then collect points for each of the faces - i.e. the 'center' point and the all of the perimeter points needed.
              Iterate the points collection - get the 'center' point, then add the new edges from the other points...

              ### pseudo-code...
              faces=[face1, face2, etc]
              points=[[face1_points_array], [face2_points_array], etc]
              ### NOW add edges from each fixed set of points
              points.each{|pts|
                cpt=pts.shift ### gets/removes 1st point
                pts.each{|pt| ents.add_line(cpt, pt) }
              }
              

              TIG

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              • renderizaR Offline
                renderiza
                last edited by

                Look what happens if you test the code above with object similar to the one in image below. If the face has a hole in the middle and is not triangulated or quadrangular like in the 2nd row the result can be messy.

                The second row show much better result because the first object had quad face before applying script.

                http://s13.postimg.org/8fngx1p3b/solved_1.png

                Hope this helps.

                [url=https://www.sketchupcode.com/:z3kqsidd]My Extensions ...[/url:z3kqsidd]

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                • renderizaR Offline
                  renderiza
                  last edited by

                  Thank you TIG will try that ASAP!!!

                  ...TIG's suggestion works! Here is a code sample that you can copy & paste for testing...

                  The only function the code does is to split faces from medians to centroid.

                  def csplit()
                  			
                  model = Sketchup.active_model
                  ents = model.active_entities
                  sel = model.selection
                  faces = sel.grep(Sketchup;;Face)
                  edges = []
                  avg = []
                  cl = []
                  
                  model.start_operation('csplit')
                  
                  	faces.each do |face|
                  		edges << face.edges
                  		###########
                  		# Medians #
                  		###########
                  		lines = face.edges
                  		lines.each {|e| 
                  		e1 = e.start.position
                  		e2 = e.end.position  
                  		x = (e2.x + e1.x) / 2
                  		y = (e2.y + e1.y) / 2
                  		z = (e2.z + e1.z) / 2
                  		cl << Geom;;Point3d.new( x, y, z )
                  		}
                  		############
                  		# Centroid #
                  		############
                  		sum = Geom;;Point3d.new(0,0,0)
                  		verts = face.vertices
                  		n = verts.size.to_f
                  		verts.each {|v| sum += ORIGIN.vector_to(v.position) }
                  		avg << Geom;;Point3d.new( sum.x/n, sum.y/n, sum.z/n ) #/
                  	end # each face
                  
                  	############################
                  	# From Centroid to Medians #
                  	############################
                  	faces.each do |face|
                  		centroid = avg.shift			
                  		edges.shift.each {|e| 
                  			lc = cl.shift
                  			ents.add_line( centroid, lc ) 
                  		}
                  	end
                  
                  model.commit_operation
                  
                  rescue => e
                  
                  puts "Error <#{e.class.name}; #{e.message} >"
                  puts e.backtrace if $VERBOSE
                  
                  model.abort_operation
                  
                  else # when no errors;
                  
                  sel.clear
                  
                  end # csplit()
                  
                  #######
                  # Run #
                  #######
                  csplit()
                  
                  
                  

                  Always welcome suggestion to make code better...cheers! ๐Ÿ‘

                  [url=https://www.sketchupcode.com/:z3kqsidd]My Extensions ...[/url:z3kqsidd]

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                  • TIGT Offline
                    TIG Moderator
                    last edited by

                    I was about to tell you of the issue with faces with holes or L shapes having a centroid 'off-face', but you have displayed it already...
                    Here is the 'fix'...
                    As you iterate each face check
                    face.classify point(cpt)
                    If it is not on the face, on a face-edge or on a face-vertex then do this:
                    tr=Geom::Transformation.new() es=ents.intersect_with(false, tr, ents, tr, true, ents.to_a)
                    You could reduce the intersected array to say face.edges provided you have a reference to the face ?
                    Then if some edges collected into 'es' remain 'unfaced' use this to erase them? :
                    es.grep(Sketchup::Edge).each{|e|e.erase! unless e.faces[0]}

                    ๐Ÿ˜•

                    TIG

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                    • pilouP Offline
                      pilou
                      last edited by

                      Bravo! ๐Ÿ˜Ž
                      Some testings in view and some track the bugs! ๐Ÿ˜‰

                      Ps you are very friendly to have put my name but take attention that I have not made any code just a little moment of inspiration (given by a French guy anar! ๐Ÿ˜‰ โ˜€

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

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                      • A Offline
                        anar
                        last edited by

                        @unknownuser said:

                        Bravo! ๐Ÿ˜Ž
                        Some testings in view and some track the bugs! ๐Ÿ˜‰

                        Ps you are very friendly to have put my name but take attention that I have not made any code just a little moment of inspiration (given by a French guy anar! ๐Ÿ˜‰ โ˜€

                        Thanks Pilou for mentioning that I started that discussion with you here : http://www.polyloop.net/showthread.php/9854-Topmod-De-la-maille-topologique%21/page7#133

                        And thanks also because without you that plugin would have never been made !

                        Anar
                        http://www.reppersdelight.spacymen.com

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                        • G Offline
                          glro
                          last edited by

                          @renderiza said:

                          Look what happens if you test the code above with object similar to the one in image below. If the face has a hole in the middle and is not triangulated or quadrangular like in the 2nd row the result can be messy.

                          The second row show much better result because the first object had quad face before applying script.

                          http://s13.postimg.org/8fngx1p3b/solved_1.png

                          Hope this helps.

                          i thought it was only for surfaces, but i see that it works on volumes also...

                          would it be possible to split the volume following the liness making like a 3d puzzle?

                          this would mean adding surfaces following the lines to make independant volumes

                          like "voxelize.rb", but not only cubes

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                          • pilouP Offline
                            pilou
                            last edited by

                            Seems working fine ๐Ÿ˜„


                            faceclip.jpg

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

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                            • pilouP Offline
                              pilou
                              last edited by

                              And all medians are present! ๐Ÿ‘
                              I don't want imagine the possibilities in 3D! ๐Ÿ’š

                              faceclip1.jpg

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

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                              • renderizaR Offline
                                renderiza
                                last edited by

                                TIG: Thank you TIG will test that out effective immediately! ๐ŸŽ‰

                                Pilou & Anar: People that bring ideas to the table deserve recognition as well. ๐Ÿ‘

                                glro: That would be very cool indeed! I think there is a plugin that does something like this but don't remember it just now. If I find it will let you know. ๐Ÿ‘

                                Pilou: Very cool! ๐Ÿ‘

                                [url=https://www.sketchupcode.com/:z3kqsidd]My Extensions ...[/url:z3kqsidd]

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                                • PixeroP Offline
                                  Pixero
                                  last edited by

                                  Hi!

                                  May I suggest an addition.
                                  For people working in 3ds Max a imported SketchUp model is sometimes hard to work with because it doesn't consist of evenly sized quad faces. I have this idea to be able to split a face with inner loops like windows by projecting lines in the direction of the edges to the outer loop.
                                  See this quick sketch.
                                  image.jpg

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                                  • G Offline
                                    glro
                                    last edited by

                                    @renderiza said:

                                    ..
                                    [b]glro:
                                    That would be very cool indeed! I think there is a plugin that does something like this but don't remember it just now. If I find it will let you know. ๐Ÿ‘

                                    :

                                    Maybe you think also to voxelize.rb
                                    http://sketchucation.com/forums/viewtopic.php?t=36063

                                    but voxelize makes cubes only; it would be funny to split the volume in exact sub-volumes, and try to build the whole volume back again, using sketchup

                                    i have a 3d connexion mouse, and there is a game like this, to learn how to use it

                                    and in addition, splitting a volume in sub-volumes is equivalent to building a 3d mesh, for structural analysis...

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                                    • renderizaR Offline
                                      renderiza
                                      last edited by

                                      @pixero said:

                                      I have this idea to be able to split a face with inner loops like windows by projecting lines in the direction of the edges to the outer loop.

                                      This is excellent idea! It will produce the cleanest geometry possible before dividing it even more. ๐Ÿ‘

                                      @glro said:

                                      Maybe you think also to voxelize.rb
                                      http://sketchucation.com/forums/viewtopic.php?t=36063

                                      but voxelize makes cubes only; it would be funny to split the volume in exact sub-volumes, and try to build the whole volume back again, using sketchup

                                      i have a 3d connexion mouse, and there is a game like this, to learn how to use it

                                      and in addition, splitting a volume in sub-volumes is equivalent to building a 3d mesh, for structural analysis...

                                      The plugin I had in my mind was not voxelize...it was one that only worked if you had SketchUp Pro.

                                      Anyways making a plugin like this would be cool indeed. Not sure if I possess the knowledge to do it myself at the moment but will see if I can experiment with the idea in the future.

                                      [url=https://www.sketchupcode.com/:z3kqsidd]My Extensions ...[/url:z3kqsidd]

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                                      • renderizaR Offline
                                        renderiza
                                        last edited by

                                        [pre:3p20mm78]Authors:: Anar | Dan Rathbun | Pilou | Renderiza | TIG
                                        Plugin Name:: FaceSplit
                                        Version:: 1.0.1
                                        Date:: 10/28/2013
                                        Cost:: Free[/pre:3p20mm78]
                                        FaceSplit v1.0.1 is now available for download.

                                        http://s18.postimg.org/6mnop92dl/split_dlg.png

                                        Note: Will eventually make video explaining how to use plugin.

                                        [url=https://www.sketchupcode.com/:z3kqsidd]My Extensions ...[/url:z3kqsidd]

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                                        • pilouP Offline
                                          pilou
                                          last edited by

                                          Sure a video will give some ideas to users! ๐Ÿ˜„

                                          What are the natures of the up date ?

                                          diamond.jpg

                                          http://sketchucation.com/forums/download/file.php?id=111403

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

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                                          • guanjinG Offline
                                            guanjin
                                            last edited by

                                            ๆˆ‘็‚นๅ‡ปๅ›พๆ ‡๏ผŒๆฒกๆœ‰ไปปไฝ•ๅๅบ”๏ผ

                                            I come from China, is to learn

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