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    [Plugin] Import OBJ with Materials v2.1 20131118

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    • Z Offline
      ZFRPS
      last edited by

      this idea is nice !

      but this plugin is bad !

      sketchup is bim

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      • TIGT Offline
        TIG Moderator
        last edited by

        @unknownuser said:

        this idea is nice !
        but this plugin is bad !

        Why is it ?
        ...
        You write a better plugin then... it's a free country/world...
        If my best isn't good enough then make it better, and share it...

        TIG

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        • thomthomT Offline
          thomthom
          last edited by

          @unknownuser said:

          but this plugin is bad !

          Are you implying it's not working for you?

          Thomas Thomassen โ€” 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

            @unknownuser said:

            this idea is nice !

            but this plugin is bad !

            You're lack of details is astounding.....How about some useful information about what the plugin is or isn't doing? And maybe a test file that it fails on?

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

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            • F Offline
              Fletch
              last edited by

              TIG, thanks for sharing this great plugin!

              @unknownuser said:

              this plugin is bad
              ๐Ÿ˜† ๐Ÿ˜’
              to quote one of my favorite bands Flight of the Conchords "could you be more specific with your feedback, please?"

              Fletch
              Twilight Render Cross-platform Plugin for SketchUp on PC or Mac

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              • J Offline
                jchau2007
                last edited by

                Tig I just wanted you to know that your constribution will never be forgotten as well as many other great plugin writers. Some times people just took these great plugins for granted. When something doesn't for an individual, they complained. Some of us don't know how fortunate we are to have all these great individuals to write up the plugins and given them for free. Wait til the plugin writer start charging people to have their plugins download... then people will go nutz.

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                • TIGT Offline
                  TIG Moderator
                  last edited by

                  Thanks for the kind words... I know it's not perfect but it does work a lot of the time and there are work around for when the obj's format is incompatible...
                  I just got rankled at the lack of civility or useful criticism in that recent post - "if you can do better do it", was my challenge...
                  ๐Ÿ˜’

                  TIG

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                  • TIGT Offline
                    TIG Moderator
                    last edited by

                    Here's v1.5 20100816 Missing 'group' in some types of OBJ code trapped [with "g OBJ"].
                    http://forums.sketchucation.com/viewtopic.php?p=172790#p172790

                    TIG

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                    • X Offline
                      xrok1
                      last edited by

                      ๐Ÿ˜‰

                      โ€œThere are three classes of people: those who see. Those who see when they are shown. Those who do not see.โ€

                      http://www.Twilightrender.com try it!

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                      • thomthomT Offline
                        thomthom
                        last edited by

                        I tried out this importer on a obj I had exported from SU - then edited in PS.
                        On importing it back to SU I noticed some errors. Attached is the model and screenshots from SU vs Max:

                        SketchUp 3Ds Max

                        SketchUp 3Ds Max

                        p.s.: the topic title doesn't reflect the current version. ๐Ÿ˜‰


                        Think I zipped all the files...

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

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                        • thomthomT Offline
                          thomthom
                          last edited by

                          Just noticed another glitch above the left front light.

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

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                          • J Offline
                            jsteacy
                            last edited by

                            TIG, I tried using your script to import .obj files from this website http://www.modelplusmodel.com, and it doesn't work. note that it didn't work for the simlab importer as well, something about negative indexes of the faces. Can you look into it? Also reading through the posts trying to get a better understanding of the .obj file type. Does every obj file need a mtl file for materials and textures?

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                            • TIGT Offline
                              TIG Moderator
                              last edited by

                              @jsteacy said:

                              TIG, I tried using your script to import .OBJ files from this website http://www.modelplusmodel.com, and it doesn't work. Note that it didn't work for the Simlab Importer as well, something about negative indexes of the faces. Can you look into it? Also reading through the posts trying to get a better understanding of the .OBJ file type. Does every OBJ file need an MTL file for materials and textures?

                              That site's free-sample bird 3DS file imported OK [in Pro] - see below...
                              BUT the OBJ file format... ๐Ÿ˜’
                              To answer your questions first...
                              If there is no MTL file then there are no colors/materials in the resulting mesh.
                              If there is an MTL file but no images in the defined ../folder_path/file_name then there objects with materials specified will only get the color without the texture.

                              The f 123/123 124/124 125/125 is the correct way for a face to be specified in an OBJ file - this face is triangular, and uses vertices 123/124/125 [v] and the equivalent texture vertices [vt].
                              I can't see why their OBJ file format uses negative values at all !!! ๐Ÿ˜•

                              My OBJ Importer is not foolproof... BUT can you point me at exact problem [OBJ[MTL] files... or PM me them ?
                              I can change my code to trap for any negative values for 'face indices' [see below]... BUT the imported object might end up being rubbish anyway ? I suspect that we need a miracle ?? ๐Ÿ˜ฎ Capture.PNG

                              TIG

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                              • J Offline
                                Jim
                                last edited by

                                negative vertex references are legal in the .obj format.

                                f -1 -2 -3

                                this just means use the vertexes defined 1, 2, and 3 lines previous. Negative index values mean a relative offset from the current line. (I think. ๐Ÿ˜’ ) Not sure if it includes all lines, or just 'v' lines in the count, though.

                                Hi

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                                • N Offline
                                  notareal
                                  last edited by

                                  "BUT the imported object might end up being rubbish anyway ? I suspect that we need a miracle ??"
                                  I believe it can be done... well just tested and Thea did import that 'F06 House bird' OK... sorry I don't have internal details how importer will actually handle this model.

                                  Welcome to try [Thea Render](http://www.thearender.com/), Thea support | [kerkythea.net](http://www.kerkythea.net/) -team member

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                                  • J Offline
                                    Jim
                                    last edited by

                                    Since Ruby has negative array indexes already, and the .obj is imported in at least a recognizable format, it may be something simple like an off-by-one error for negative indexes.

                                    Hi

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                                    • J Offline
                                      jsteacy
                                      last edited by

                                      I tried all of them including the house bird, and nothing gets imported. This is what I get from the console after I click the units to import to:

                                      Error; #<ArgumentError; Cannot convert argument to Sketchup;;Point3d>
                                      C;/Program Files/Google/Google SketchUp 7/Plugins/obj_importer.rb;278;in `add'
                                      C;/Program Files/Google/Google SketchUp 7/Plugins/obj_importer.rb;278;in `run'
                                      C;/Program Files/Google/Google SketchUp 7/Plugins/obj_importer.rb;278;in `map'
                                      C;/Program Files/Google/Google SketchUp 7/Plugins/obj_importer.rb;278;in `run'
                                      C;/Program Files/Google/Google SketchUp 7/Plugins/obj_importer.rb;208;in `each'
                                      C;/Program Files/Google/Google SketchUp 7/Plugins/obj_importer.rb;208;in `run'
                                      C;/Program Files/Google/Google SketchUp 7/Plugins/obj_importer.rb;329
                                      C;/Program Files/Google/Google SketchUp 7/Plugins/obj_importer.rb;329;in `call'
                                      

                                      hope that helps

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                                      • TIGT Offline
                                        TIG Moderator
                                        last edited by

                                        So if the face-indices are 'negative' then we work backwards through the face vertex lists ? - i.e we reverse the array of v's, and take the abs value as the index ? ๐Ÿ˜•

                                        TIG

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                                        • J Offline
                                          Jim
                                          last edited by

                                          Line 248:

                                          
                                          values.each do |v|
                                          w = v.split("/")
                                          vvv = Integer(w[0])
                                          if vvv <= -2 # this 
                                            vvv += 1
                                          end
                                          face<<Integer(vvv)
                                          face_uvs.push(w[1].to_i)if w[1]
                                          
                                          

                                          And maybe look at fill_from_mesh instead of a dd_faces_from_mesh. # Line 302. Probably left over from someone else..

                                          587.png

                                          I'm shocked it actually seems to have worked - it was just a hunch.

                                          Hi

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                                          • TIGT Offline
                                            TIG Moderator
                                            last edited by

                                            Here's a slightly different version that I was working on independently - it also works !
                                            http://forums.sketchucation.com/viewtopic.php?p=172790#p172790 [v1.7 has fill from mesh changes too]Capture.PNG

                                            TIG

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