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    SketchyPhysics3.2 (Dec 2)

    Scheduled Pinned Locked Moved SketchyPhysics
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    • M Offline
      mptak
      last edited by

      Spent a few minutes Christmas morning installing SP3.2 on my triplet nephew's Macbook with SnowLeopard and it worked nicely...I guess it is time to upgrade to snow leopard....Adapt or perish I guess.

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      • J Offline
        jblively
        last edited by

        • New script command setFrameRate overrides physics settings framerate.

        Hello, trying to implement the set frame rate command to get the model to slow down on faster computers so we can anticipate the results.

        Can you let me know the usage and where to put it.

        I've tried setFrameRate=5; in the on tick section and it doesn't seem to make any difference.

        Thanks,

        Joe

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        • B Offline
          bossdave
          last edited by

          I am running SU8 with wine on Ubuntu with SP3.2. The UI box appears showing: Joint, State, Properties, Shapes , but no details. Same problem withSP3.1. Any ideas what I am missing? Thanks

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          • P Offline
            phy
            last edited by

            @bossdave said:

            I am running SU8 with wine on Ubuntu with SP3.2. The UI box appears showing: Joint, State, Properties, Shapes , but no details. Same problem withSP3.1. Any ideas what I am missing? Thanks

            There you go http://forums.sketchucation.com/viewtopic.php?f=61&t=33030
            webdialogs don't work in wine without this tweak.

            Tableau de comparaison de Staxyn s'agit d'un mГ©dicament uniquement sur ordonnance.

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            • C Offline
              CPhillips
              last edited by

              @jblively said:

              • New script command setFrameRate overrides physics settings framerate.

              Hello, trying to implement the set frame rate command to get the model to slow down on faster computers so we can anticipate the results.

              Can you let me know the usage and where to put it.

              I've tried setFrameRate=5; in the on tick section and it doesn't seem to make any difference.

              Thanks,

              Joe

              Thats not quite how it works. a frame rate of 5 will make the physics simulation step 5 times before updating the sketchup model. To make it go a little slower you could use a frame rate of 1.

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              • M Offline
                MichaelG.1
                last edited by

                I posted a comment
                [more particularly a plea for help]
                in the newbie forum, yesterday.

                Grateful for any assistance.

                MichaelG.

                Update: 01-01-2011
                ... Having received no response. I finally discovered that my download of SP3.2 was either incomplete or corrupt.
                Now, having downloaded a fresh copy, everything seems to work.

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                • robintR Offline
                  robint
                  last edited by

                  help UI window not working

                  Postby robint on Mon Jan 03, 2011 8:59 am
                  ive got su8 latest and sp 3.2 installed

                  when I try to inspect joints i get the usual info for a hinge (say). when I try to input say accel or a controller name , it accepts them but doesnt do anything - no slider in the run panel

                  Ive tried the other tip of clicking on the UI button to exit the UI window to no avail

                  I saw a tuorial where it said that you can turn a hinge into a reversible motor by putting accel = 1 and giving the controller a name - which is then supposed to bring up a slider in the run panel - i just get a blank.

                  then i go back and look again and just get blank boxes. only restarting su8 will clear the prob but it comes back if I try to change a parameter

                  cheers Robin

                  ps I havent got so excited since I first used SU4 - this could be a wonderful educational tool if physical values could be added to demonstrate newtons laws for example

                  I made a double pendulum the other day, but as already said, there's lots of real world physical attributes to be addressed (eg mass, density, friction, elasticity etc) but its early days

                  As one door closes another one slams in your face

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                  • robintR Offline
                    robint
                    last edited by

                    Hi guys

                    how or where do I post a skp model for discussion

                    also i cant post a link here?

                    robin

                    As one door closes another one slams in your face

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                    • robintR Offline
                      robint
                      last edited by

                      This site seems to be moribund, not a lot happening?

                      Anyway Ive solved the UI problem

                      so all working ok now

                      As one door closes another one slams in your face

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                      • robintR Offline
                        robint
                        last edited by

                        here my 2c worth for sp 3.2

                        if you want to make a reversible motor joint, use the hinge (as per sp2) and set the controller blue box to

                        quote slider ( 'anyname' )

                        you can see the same construction using the motor joint

                        wish I didnt have to waste hours getting to this point.

                        Also

                        to make magnetic solids work you need to set the ui box status to magnetic
                        and the magnetic force to a large value eg +- 1000

                        not obvious is it?

                        I wonder whether its worth contributing to a wikimanual at5 this stage if thereis going to be an sp4 completely recoded?

                        Robin

                        As one door closes another one slams in your face

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                        • J Offline
                          jblively
                          last edited by

                          @robint said:

                          to make magnetic solids work you need to set the ui box status to magnetic
                          and the magnetic force to a large value eg +- 1000

                          I do believe that magnetic force is also affected by mass and scale. So if the model is very large, you'll need a larger value for magnetic force. If you have a small scale model, you can use a magnetic force of as little as 10 to see results.

                          There is so much involved in SP, more documentation would be nice, but i'm just glad we have people here we can chat with who want to help!

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                          • pilouP Offline
                            pilou
                            last edited by

                            Does this vervion can works on the V6?

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

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                            • robintR Offline
                              robint
                              last edited by

                              Hi JB

                              good point

                              afik though there is a density coeff, I dont know how well it correlates to the mass of an object?
                              the apparent mass i governed by the size of the collision shape as set in the rt click physics setting

                              havent figured this tiresome details out yet

                              I have a number of cu4rious physical models i would like to post for discussion (eg double pendulums etc) but havent yet found a way to post these little experiments.

                              It seems daft that one cant attach these on this forum - severly limiting

                              Any ideas?

                              As one door closes another one slams in your face

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                              • C Offline
                                CPhillips
                                last edited by

                                Yes magnets are effected by the size of an object.

                                You can attach files to posts. Look at the bottom of the form and there is an "Upload Attachment" tab.

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                                • robintR Offline
                                  robint
                                  last edited by

                                  hi all

                                  sorry pardon didnt see the tab for uploading

                                  I was trying to make a chain rotating around 2 sprockets. The chain seems to want to fly apart, its all chaotic? even though its all supposed to be stationary, any ideas

                                  btw i have su8 and sp3.2 dec2010

                                  its all good fun but i wish i had more control over the way things work, bit hit and miss at the moment

                                  btw although bugsplat is a good tool, i dont connect my main machine directly to the net for obvious security reasons, so cannot utilise bs directly. It would be much more convenient if bs made a composite text file stored conveniently which i could gather up and post here to help with su crashes. Its a bit cumbersome at the moment

                                  cheers robin


                                  a chain loop goes wrong

                                  As one door closes another one slams in your face

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                                  • TIGT Offline
                                    TIG Moderator
                                    last edited by

                                    CPhillips
                                    Please see here for an 'issue' with group.definition http://forums.sketchucation.com/viewtopic.php?p=300105#p300105 😉

                                    TIG

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                                    • robintR Offline
                                      robint
                                      last edited by

                                      hi CP

                                      thanx for the tip, will see if i can make it so.

                                      any pointers on where to start on Ruby so i can at least know something of what im doing?

                                      cheers

                                      Robint

                                      As one door closes another one slams in your face

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                                      • robintR Offline
                                        robint
                                        last edited by

                                        @tig said:

                                        CPhillips
                                        Please see here for an 'issue' with group.definition http://forums.sketchucation.com/viewtopic.php?p=300105#p300105 😉

                                        Hi
                                        I tried the code but it seemed to make things worse

                                        Code: Select all
                                        class Sketchup::Group
                                        if not Sketchup::Group.method_defined?(:definition)
                                        def definition() # make it so you can use group.definition
                                        return(self.entities.parent)
                                        end
                                        end#if
                                        end

                                        something about a chain sp doesnt like

                                        Im stuck, my chain flies apart

                                        robin


                                        attemtped chain

                                        As one door closes another one slams in your face

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                                        • robintR Offline
                                          robint
                                          last edited by

                                          High CP

                                          I have used Poser 5 in the past and learnt about inverse kinematics and joints

                                          I think there is a fundamental limitation that prevents you making a chain of joints because the last child joint has to join the first parent so the parent must then become a child. This would be inherently unstable (like positive feedback) which is why the joint flies apart in pieces

                                          Can anyone confirm my guesswork or poiont me somewhere that a working chain has been made (ie will revolve around a sprocket

                                          cheers robin

                                          As one door closes another one slams in your face

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                                          • H Offline
                                            hpnisse
                                            last edited by

                                            Hey, robint!

                                            Your chain works perfect when you set the collision state correct in every single object 😄
                                            Re. my chain 1.skp

                                            ` /hpnisse`
                                            ` Windows 7 U -Sketchup 8 -SketchyPhysics 3.2-Dec2 - from Sweden`

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