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    SketchyPhysics Alpha

    Scheduled Pinned Locked Moved SketchyPhysics
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    • C Offline
      CPhillips
      last edited by

      @namza said:

      i did that funny work
      you need the last version of sketchyphysics http://code.google.com/p/sketchyphysics/wiki/LatestVersion

      Very cool. That is the simplest self moving machine I have seen. 😄

      Chris

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      • N Offline
        namza
        last edited by

        @cphillips said:

        @namza said:

        i did that funny work
        you need the last version of sketchyphysics http://code.google.com/p/sketchyphysics/wiki/LatestVersion

        Very cool. That is the simplest self moving machine I have seen. 😄

        Chris

        i made it afer a lost of test. The problem is that now i CAN'T ( !!) reproduce this machine. It goes with join and groups but all depends of what do i have to join ans what do i have to group ...and in wich order .....

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        • C Offline
          CPhillips
          last edited by

          @namza said:

          i did that funny work
          you need the last version of sketchyphysics http://code.google.com/p/sketchyphysics/wiki/LatestVersion

          By the way. I see you made your track out of blocks. That is fine, but you can also just edit the floor. Any staticmesh (like the floor) can be edited at a per face level and will still work.

          [url=http://www.sketchucation.com/forums/scf/sas/SketchyPhysics/avance3c-track.skp:33txugzx]avance3c-track.skp[/url:33txugzx]

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          • C Offline
            CPhillips
            last edited by

            @namza said:

            @cphillips said:

            @namza said:

            i did that funny work
            you need the last version of sketchyphysics http://code.google.com/p/sketchyphysics/wiki/LatestVersion

            Very cool. That is the simplest self moving machine I have seen. 😄

            Chris

            i made it afer a lost of test. The problem is that now i CAN'T ( !!) reproduce this machine. It goes with join and groups but all depends of what do i have to join ans what do i have to group ...and in wich order .....

            You can use the joint connection tool to examine the way the joints are connected. In this case each of the 3 cylinders is grouped with a hinge. And the bars are just connected to the hinges.

            Joint connections can be confusing at first.

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            • N Offline
              not registered yet
              last edited by

              Chris,
              That is nothing short of amazing. I'm awestruck. I'm curious as to why and what it took (in general terms) to create this.

              Mark

              P: marsol

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              • C Offline
                CPhillips
                last edited by

                @unknownuser said:

                Chris,
                That is nothing short of amazing. I'm awestruck. I'm curious as to why and what it took (in general terms) to create this.

                Mark

                Thanks Mark.

                The why is because its fun.😄 I like making things that actually behave the way you'd expect.

                What it took was a good physics engine (newton) and a lot of work. I have been working on it on and off for over 2 years. Its currently around 10k lines of ruby but I have probably written and discarded 20k.

                Some of that 10k is code that isn't even enabled yet. SketchyReplay for example records animations and features some non-linear editing. Here is an example. Note the camera behavior and the rewind stuff at the end.

                Chris

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                • A Offline
                  architectboy
                  last edited by

                  So, I've set up a Sketchy Physics competition for anyone who is interested in modeling with Sketchy Physics.

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                  • KrisidiousK Offline
                    Krisidious
                    last edited by

                    is there or could there be, a way to turn on a shader, that would shade or highlight the area in which SketchyPhysics was available with in the model.

                    know what I mean? there is an area in which the Physics work and one where it does not, I'd like to see that area...

                    By: Kristoff Rand
                    Home DesignerUnique House Plans

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                    • A Offline
                      architectboy
                      last edited by

                      Yea, for some reason objects seem to stop moving about 200 feet from the origin.

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                      • KrisidiousK Offline
                        Krisidious
                        last edited by

                        that's because the Physics are not global... it's just a small area around the axis...

                        By: Kristoff Rand
                        Home DesignerUnique House Plans

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                        • N Offline
                          not registered yet
                          last edited by

                          Very cool plug in!
                          If I move the sketchyphysics tool window any other toolbars that are open on my second monitor close.

                          P: SABBA

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                          • C Offline
                            CPhillips
                            last edited by

                            You can adjust the size of the world under Plugins->Physics Settings. Adjust world scale to make it bigger or smaller. Note if you make it too big small things will stop working.

                            Chris

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                            • C Offline
                              CPhillips
                              last edited by

                              @unknownuser said:

                              Very cool plug in!
                              If I move the sketchyphysics tool window any other toolbars that are open on my second monitor close.

                              Hm. Thats wierd. Ill look into it.

                              Chris

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                              • N Offline
                                not registered yet
                                last edited by

                                @cphillips said:

                                Any other comments or feedback?

                                Has anyone used the SketchySolids toolbar? I am thinking that it is almost worthy of being a separate plugin.

                                Chris

                                Where can I download SketchySolids?

                                P: Invader ZIM

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                                • KrisidiousK Offline
                                  Krisidious
                                  last edited by

                                  is there a way to convert a regular group or component into sketchy solids?

                                  By: Kristoff Rand
                                  Home DesignerUnique House Plans

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                                  • C Offline
                                    CPhillips
                                    last edited by

                                    @unknownuser said:

                                    is there a way to convert a regular group or component into sketchy solids?

                                    Right click it and use the Set Shape menu.

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                                    • C Offline
                                      CPhillips
                                      last edited by

                                      There are some pretty good user generated demos popping up on 3d warehouse. Here are a few good ones!
                                      http://sketchup.google.com/3dwarehouse/details?mid=f27b91714ea5752a87d6d7c29947ae22
                                      http://sketchup.google.com/3dwarehouse/details?mid=4ceb45eacc729c5ea611269c93d910
                                      http://sketchup.google.com/3dwarehouse/details?mid=fefb0ae5c3399f426e49a9db8e76daf1
                                      http://sketchup.google.com/3dwarehouse/details?mid=d972bcb8198c5770ac03d4486f1f7520

                                      And a good YouTube video:
                                      http://www.youtube.com/watch?v=YQquRx7rmkk

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                                      • N Offline
                                        not registered yet
                                        last edited by

                                        Can I use a spring like a piece of elastic?

                                        What I would like is that the model starts with the elastic stretched, so that once the simulation begins it will try to shrink to zero length (or some other predefined minimum length) pulling any attached object with it.

                                        Where-as the spring seems not to exert any force on attached objects until it is either streched or compressed from the start position.

                                        Ampa

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                                        • C Offline
                                          CPhillips
                                          last edited by

                                          @ampa said:

                                          Can I use a spring like a piece of elastic?

                                          What I would like is that the model starts with the elastic stretched, so that once the simulation begins it will try to shrink to zero length (or some other predefined minimum length) pulling any attached object with it.

                                          Where-as the spring seems not to exert any force on attached objects until it is either streched or compressed from the start position.

                                          Ampa

                                          It doesn't do that yet. Ill add it to my todo list.

                                          Thanks Ampa.

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                                          • N Offline
                                            not registered yet
                                            last edited by

                                            This is a great plugin - congrats of the work so far.

                                            Noticed one other bug: pressing Ctrl+Z (Undo) while the simulation is running causes seriously bad things to happen! Can Undo be disabled temporarily?

                                            Some more playing…

                                            I decided to create a chain, and tried in a number of ways…

                                            1. Create rings (torus) and arrange them so that they interlock in 3d space. Why does this not work? I assigned Shape:convexhull, but this is obviously not correct.

                                            2. Create rectangular 'chain links' where each 'link' is made of 4 cuboids. This should overcome the convex hull issue and be easier on the maths 😄 Indeed it works! But looks ugly!

                                            3. A different sort of chain… Created a linear array of cubes and inserted a ball joint between each one. At this stage I have a vertical column of swinging cubes, but they all act independently. And I can't work out how to correctly group the joints with the cubes to create a single chain of linked cubes. What is the correct way to do this?

                                            P: Ampa

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