sketchucation logo sketchucation
    • Login
    ℹ️ Licensed Extensions | FredoBatch, ElevationProfile, FredoSketch, LayOps, MatSim and Pic2Shape will require license from Sept 1st More Info

    SketchyPhysics 3.5.6 (26 January 2015)

    Scheduled Pinned Locked Moved SketchyPhysics
    208 Posts 49 Posters 289.9k Views 49 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • F Offline
      faust07
      last edited by

      A typical example of problems with transformed objects is this:


      buggy.skp

      1 Reply Last reply Reply Quote 0
      • A Offline
        Anton_S
        last edited by

        @faust07 said:

        A typical example...

        Thats very strange. When I added option readback collision geometry to the vehicle, there were 3 collision shapes below it, which came out from nowhere. That's some strange effect with default shape. Meantime for the fix, set vehicle shape to convexhull2 or compound2 for proper collision generation. Convexhull2 is preferred as it's the fastest.

        I can't reproduce this in SP3.2, so that's some bug by me, which must be eliminated. I will look into fixing it.

        Thanks for report.

        1 Reply Last reply Reply Quote 0
        • F Offline
          faust07
          last edited by

          If You add option readback collision geometry to the wheels You will sea that it happens only with flipped objects/groups ...

          1 Reply Last reply Reply Quote 0
          • A Offline
            Anton_S
            last edited by

            Okay, it is fixed now! Please download latest version and see how it goes. Thanks for report, faust07 😄

            1 Reply Last reply Reply Quote 0
            • F Offline
              faust07
              last edited by

              It works. Thanks again Anton. The door to the "Physics World" in SketchUp is wide open ...

              1 Reply Last reply Reply Quote 0
              • B Offline
                BIANI patrick
                last edited by

                Si ça peut être utile !?


                Animation Sketchyphysics sans logiciel de rendu.pdf

                1 Reply Last reply Reply Quote 0
                • ashscottA Offline
                  ashscott
                  last edited by

                  I think I see what you did there 😉

                  Just some stuff I do with Sketchup.

                  1 Reply Last reply Reply Quote 0
                  • F Offline
                    faust07
                    last edited by

                    Oh no, Anton I don't want to nerve you. I cheered too soon. A model that ran in SPh3.5.3, jolts in SPh3.5.4 a little ... Probably the steering blocks are squeezed out laterally from the body of the truck. I hope the GIF example shows what a little.


                    strange behaviour ...

                    1 Reply Last reply Reply Quote 0
                    • A Offline
                      Anton_S
                      last edited by

                      @biani patrick said:

                      Si ça peut être utile !?

                      Thanks for your documentation, patrick. I placed this in first post, as part of reference.

                      1 Reply Last reply Reply Quote 0
                      • A Offline
                        Anton_S
                        last edited by

                        @faust07 said:

                        Oh no, Anton I don't want to nerve you. I cheered too soon. A model that ran in SPh3.5.3, jolts in SPh3.5.4 a little ... Probably the steering blocks are squeezed out laterally from the body of the truck. I hope the GIF example shows what a little.

                        Is the behavior different in SP3.2? Are you assigning same shapes to SP3.2 and SP3.5.4? Meantime, if they are squeezed out, to fix it, set most surrounding parts and the cabin to Not Collidable.

                        1 Reply Last reply Reply Quote 0
                        • A Offline
                          Anton_S
                          last edited by

                          @faust07 said:

                          No, in SP3.2 it did run OK. There were only the other reasons for crashes, you've solved so wonderful! In your SP3.5.3 this truck moved correctly (after resetting some mirrored objects).

                          Can you send me the skp model (private message if you prefer), so I could investigate.

                          1 Reply Last reply Reply Quote 0
                          • F Offline
                            faust07
                            last edited by

                            No, in SP3.2 it did run OK. There were only the other reasons for crashes, you've solved so wonderful! In your SP3.5.3 this truck moved correctly (after resetting some mirrored objects in SPh3.5.3).

                            1 Reply Last reply Reply Quote 0
                            • A Offline
                              Anton_S
                              last edited by

                              Where are the physics joints and the wheels? A lot of parts of the model are deleted. Do you mind reuploading? Don't worry about size. You can erase the file from attachments after I download it.

                              1 Reply Last reply Reply Quote 0
                              • F Offline
                                faust07
                                last edited by

                                Here it is. It's a model on the base (not to forget to mention) of posts of Mr.K. and other authors for cars following a path (with little modifications I did, to use it universally). I've blown it up with physical walls, doors, roof, seats, driver, wheels, lights for twilight renderer, euro norm ... Hope, you find a solution.
                                Oh sorry, have caught the wrong file. It was too dark last night and there was too much port wine ... I must go to my other computer to upload the correct file.

                                1 Reply Last reply Reply Quote 0
                                • A Offline
                                  Anton_S
                                  last edited by

                                  I see what it is. It has nothing to do with the flipped bodies. The problem is that in SP3.5.3 and below the Default shape did not include all geometry as part of collision generation; however, in SP3.5.4 I made it to include all geometry, which I see breaks some compatibility with the prior models. The wheels are pushed out by the lower black part of the cabin which according to Default shape has a box collision. To fix this, you enter the cabin group one level deep, and set the lower black part to ignore:
                                  cabion_state.png
                                  In prior versions, the lower black cabin wasn't even part of collision because the default shape method didn't consider calculating collision for it.

                                  I see that you set all sub shapes to not-collidable. Here is the thing to keep in mind. Setting all sub collisions to not-collidable will do nothing. The not-collidable can only be applied to the top groups, not subgroups. Set particular subgroups to Ignore if you don't want them to be part of collision. To remove the not-collidable flag from all subgroups at once, simply select all subgroups of the cabin, right-click and select, SketchyPhysics > State > Collidable.

                                  Even though the SP3.5.4 method for default shape is more profound, I will still revert this change to remain compatible with prior models.

                                  Edit: Despite that, I just found a bad bug in default shape. I will fix it for SP3.5.5

                                  1 Reply Last reply Reply Quote 0
                                  • F Offline
                                    faust07
                                    last edited by

                                    I'll change the model accordingly and report briefly. I'm worried that you want to turn back more profound methods for older models.

                                    1 Reply Last reply Reply Quote 0
                                    • A Offline
                                      Anton_S
                                      last edited by

                                      Okay, fixed it! Now, the default shape should behave like in prior versions. I just adjusted the new method to act like an old one, instead of replacing with the original method from SP3.2. See how it goes!

                                      1 Reply Last reply Reply Quote 0
                                      • F Offline
                                        faust07
                                        last edited by

                                        Now it works better than ever before. Great! Convexhull2 and compound2 are very usefull shapes too. Thank you again!

                                        1 Reply Last reply Reply Quote 0
                                        • F Offline
                                          faust07
                                          last edited by

                                          Here it is ...


                                          Truck runs with SP3.5.3 & SP3.5.5


                                          SketchyPhysics-Truck

                                          1 Reply Last reply Reply Quote 0
                                          • J Offline
                                            jumpjack
                                            last edited by

                                            Thanks Anton_s for the amazing amount of work you are doing!

                                            A couple of notes:

                                            @unknownuser said:

                                            Fixed a bug where staticmesh inside a group would force simulation to crash. A staticmesh or compound within the group becomes default shape now.

                                            This bug still exists for me using WinXP-SP3, SU 13.0.4812 and SP 3.5.5

                                            @unknownuser said:

                                            Added continuous collision checkbox option to the emitter. Enabling this will prevent emitted bodies from passing other bodies at high speeds. Now, bullets will collide if CC is enabled.

                                            Where do I find the checkbox?

                                            Additionally, a "make hole" function in SP would be amazing and time-saving!

                                            1 Reply Last reply Reply Quote 0
                                            • 1
                                            • 2
                                            • 3
                                            • 4
                                            • 5
                                            • 6
                                            • 7
                                            • 8
                                            • 9
                                            • 10
                                            • 11
                                            • 6 / 11
                                            • First post
                                              Last post
                                            Buy SketchPlus
                                            Buy SUbD
                                            Buy WrapR
                                            Buy eBook
                                            Buy Modelur
                                            Buy Vertex Tools
                                            Buy SketchCuisine
                                            Buy FormFonts

                                            Advertisement