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    Sketchy Physics Contest

    Scheduled Pinned Locked Moved SketchyPhysics
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    • A Offline
      architectboy
      last edited by

      Wow... what a balancing act... I like it... To bad it violates rule #1, but otherwise I like it. And I revised mine, it looks a lot better now.


      ArchitectBoyBridge.skp

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      • C Offline
        CPhillips
        last edited by

        @unknownuser said:

        Wow... what a balancing act... I like it... To bad it violates rule #1, but otherwise I like it. And I revised mine, it looks a lot better now.

        FYI, You can make perfect arches if you use the convex hull shape. Here is an example:


        arch1.skp

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        • KrisidiousK Offline
          Krisidious
          last edited by

          this is the kind of stuff I was talking about Chris... testing shapes and systems... now make glue for me... and sand and water and wind and... and... yeah I know, I'm really happy to just have this.... but I can still wish...

          By: Kristoff Rand
          Home DesignerUnique House Plans

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          • A Offline
            architectboy
            last edited by

            Thanks for showing me what "convexhull" does, with that info I have revised it again.


            ArchitectBoyBridge.skp

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            • C Offline
              CPhillips
              last edited by

              @unknownuser said:

              Thanks for showing me what "convexhull" does, with that info I have revised it again.

              Very nice! It looks elegant and its really stable. I vote for this one. πŸ˜„

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              • C Offline
                CPhillips
                last edited by

                @unknownuser said:

                Ok, so I'm playing around with my bridge destroying it, throwing the car around, etc. when I come up with the idea of rendering the bridge, and once I had a nice render of it I couldn't help but make one of it destroyed πŸ˜„ .

                These renders are pretty sweet. I assume it is Kerkthea?

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                • A Offline
                  architectboy
                  last edited by

                  Yep, that's Kerkythea (you forgot the y). Are you working on yours, CPhillips?

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                  • C Offline
                    Charlie__V
                    last edited by

                    Convexhull:
                    Is this simply a cube (re-assinged to covexhull)and the form adjusted as necessary?
                    Forgive me if I have missed something obvious.

                    C

                    Precision M1710/Win 7 Pro 64 bit/i-7 6920 Quad core 2.9 Ghz -3.8/16Gb ram/NVIDIA M5000M 8Gb

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                    • C Offline
                      CPhillips
                      last edited by

                      @unknownuser said:

                      Convexhull:
                      Is this simply a cube (re-assinged to covexhull)and the form adjusted as necessary?
                      Forgive me if I have missed something obvious.

                      C

                      It doesnt have to be a cube. Any shape will work. The easiest way to imagine a convex hulled object is to picture it wrapped in plastic. Here is a more detailed explanation:

                      http://www.rustycode.com/tutorials/convex.html

                      If you want to see what the physics engine thinks an objects shape is:Right click the object and select Debug->Readback Collision Geometry. Then press play.

                      Chris

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                      • C Offline
                        Charlie__V
                        last edited by

                        Chris,

                        Thanks for the info....and Thanks for a Really Cool Script :~)

                        C

                        Precision M1710/Win 7 Pro 64 bit/i-7 6920 Quad core 2.9 Ghz -3.8/16Gb ram/NVIDIA M5000M 8Gb

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                        • W Offline
                          Will03
                          last edited by

                          Hey guys,

                          This is my first time using this script, and I think i might not be adhering to all the rules of the program, but nonetheless here is my submission.

                          Thank you for this great program! I love it!


                          Will03Bridge.skp

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                          • A Offline
                            architectboy
                            last edited by

                            The problem with your bridge is that it uses 18 static parts (see rule #3) which make it impossible to tear down the bridge (try it), those parts are the joints. Joints, by default, are static, but if you make them not static they just fall. So you must leave them static and group them with one of the objects that it is connected with. Just take a look at this revision of your bridge.


                            Will03BridgeLegal.skp

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                            • W Offline
                              Will03
                              last edited by

                              oh cool, thanks for the hand! that makes a lot of sense now... I'll have to make a bigger and better bridge now...

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                              • A Offline
                                architectboy
                                last edited by

                                Go for it! and that goes for anyone else who wants to build a bridge for this contest.

                                1 Reply Last reply Reply Quote 0
                                • C Offline
                                  CPhillips
                                  last edited by

                                  Not quite the same thing. But this guy did a bridge! πŸ˜„

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                                  • S Offline
                                    SpaceCow
                                    last edited by

                                    Hey, was wondering if this was a legitimate bridge. There are hinge joints inside the triangular prism blocks... They are attached to a couple of things to simulate being attached to another piece(s). I could make the whole bottom a box, but that's not accurate.


                                    bridge.skp

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                                    • L Offline
                                      LilDood
                                      last edited by

                                      My entry, only hinges, witchcraft πŸ˜„


                                      Witchcraft

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                                      • J Offline
                                        Julius
                                        last edited by

                                        so, basically, the first one is the best, but i think it infringes the rule about the large scale grouping, while the second one shouldn't. the second it's bad looking but it works.

                                        anyway, i'm not an advanced user of scketchup, maybe i'll try a better bridge later.

                                        someone can tell me why in the second one a grouped object takes off?


                                        SketchyPhysicsBridge-by_Julius.skp


                                        SketchyPhysicsBridge-by_Julius_2.skp

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                                        • J Offline
                                          Julius
                                          last edited by

                                          is there anybody out there?

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                                          • A Offline
                                            architectboy
                                            last edited by

                                            Nope, nobody was out there. But now that I'm back...
                                            The reason that you're bridge section moves is that convex-hull is convex, like it's been shrink wrapped. The only way that I could get around that was to make each individual line of the inside curve a different object, then group them all.

                                            By the way, you can forget about the rules if you want. Just make your bridge cool and breakable.

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