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    Basic Physics Engine - Stage Edge Collision, with rebound / Gravity and Friction

    How To... ?
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    • DusX
      DusX Tech Staff last edited by

      @Marci

      No need for node.js for this.. 
      My tests are going well. I have a modified version of Goblin physics running. (I picked this one since it seems to have zero dependencies and was created to be platform independant)
      So far so good.

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      • jhoepffner
        jhoepffner last edited by

        Hello,

        I am currently working hard on the Isadora/Unity connection. researching on programming and understanding of C#.
        My project is principally linked ro real time 3D (geometrically exact) mapping with moving surface, more as anamorphosis opposed to corner pin. The project allow use of shifted beamers on complicated surfaces, via Syphon and OSC.
        The inherent possibilities inside Unity 3D concerning gravity, collisions etc. are huge! And that will be the next step to explore.
        I am preparing a demo and a communication on this material for the next London Isadora conference, any idea of a precise time?
        I would be very pleased to share some info with you on the question.
        All the best, Jacques

        Jacques Hoepffner http://hoepffner.info
        GigaByte 550b / Ryzen 7 3800X / Ram 64 Go / RTX 3090 24 Go / SSD 2 To / raid0 32 To
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        MBP 15' i7 2.6 Ghz 16 Go / GTX 650M 1Go/ MacOs10.13.3 / Izzy 2.6.1
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        • Marci
          Marci last edited by

          @DusX - Goblin Physics just caused Izzy to CTD whenever I tried to crowbar it in there. Dunno what was causing it. Abandoned it to play with CoffeePhysics... which I've had some success with, altho defining the bounds of the world to the bounds of the stage seems impossible. Look forward to seeing your Goblin Physics implementation.

          rMBP 11,3 (mOS 10.13) / rMBP 11,4 (mOS 10.14) / 3x Kinect + Leap / TH2Go
          Warning: autistic - may come across rather blunt and lacking in humour!

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          • DusX
            DusX Tech Staff last edited by

            I am in contact with the dev. 
            I got it working, but collision is an issue.. (hard crash) The dev has been very helpful... so

            I hope to get further soon.
            BUT... I have box2Dweb working great! (no 3D sorry) I hope to have more news soon.

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            • Armando
              Armando Beta Gold last edited by

              Phisical Modelling (for pure data) port for Isadora is possible. The author is an old friend Cyrille Henry (Mark met him when I invited both on a workshop ar the Monaco Dance Forum in December..... 2004).

              Cyrille is an open source guy so everything is available for c people and for Javascript. Can't do any of them but here is a big help
              ready, set... [pmpd](https://puredata.info/downloads/pmpd)

              8596f5-pmpd.pdf


              Armando Menicacci
              www.armandomenicacci.net
              www.studiosit.ca

              Macbook pro 16 inches 2022 64 GB RAM, M1 MAX. OS 13 Ventura

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              • DusX
                DusX Tech Staff last edited by

                @Armando, thanks

                I will take a look at that.
                Where I am with this so far, 
                A proof of concept for 2D physics in Isadora :)
                https://youtu.be/nGRrwlWq14E

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                • Marci
                  Marci last edited by

                  @DusX: I got it working, but collision is an issue.. (hard crash) The dev has been very helpful... so

                  _I hope to get further soon._

                  Yep - that was about where I'd gotten to with it. Spotted the dev using the .on method in collision events to monitor his listeners and there my Goblin-fun stopped. It's only dependency is that it requires something to provide that event layer for collisions.

                  Instead have spent some time adding weight to the NI Mate Skeleton (i.e.: adding 3d torso and limb objects to the skeleton output) - each individual object done in CInema4D so i can get out the mesh co-ords to throw into whatever ends up being suitable for 3D use, and chucked that all into an Izzy patch.
                  So, I've got my 3D Avatar ready to place in the 3D space and collide with, all scalable to suit different builds of person, so that the collisions can occur with a suitable surface rather than a line with a static radius added.

                  rMBP 11,3 (mOS 10.13) / rMBP 11,4 (mOS 10.14) / 3x Kinect + Leap / TH2Go
                  Warning: autistic - may come across rather blunt and lacking in humour!

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                  • Marci
                    Marci last edited by

                    Modification of original patch - 10 x balls available. 3D position / collision / gravity / friction.

                    NB: Collision point is still unfortunately) centre point of each ball, not surface point, mainly because at this stage the radius / diameter of each ball is determine by the ALL scale value on each 3D Player which comes after the JS. AND, balls still don't come to an actual stop. Zip file contains Ball and Plane OBJ files.

                    56cb84-physics2.izz 4a52c8-3d-objects.zip

                    rMBP 11,3 (mOS 10.13) / rMBP 11,4 (mOS 10.14) / 3x Kinect + Leap / TH2Go
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                    • Skulpture
                      Skulpture Izzy Guru last edited by

                      http://www.creativeapplications.net/processing/kinect-physics-tutorial-for-processing/

                      The video in this is amazing!

                      Graham Thorne | www.grahamthorne.co.uk
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                      • DusX
                        DusX Tech Staff last edited by

                        Hmm.. I need a connect.

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                        • Michel
                          Michel Izzy Guru last edited by

                          @DusX

                          Or a Persee for the long run. I have ordered one.

                          Best Michel

                          Michel Weber | www.filmprojekt.ch | rMBP (2019) i9, 16gig, AMD 5500M 8 GB, OS X 10.15 | located in Winterthur Switzerland.

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                          • DusX
                            DusX Tech Staff last edited by

                            too late for the indiegogo campaign

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                            • Michel
                              Michel Izzy Guru last edited by

                              yep, it finished a few days ago.

                              Michel Weber | www.filmprojekt.ch | rMBP (2019) i9, 16gig, AMD 5500M 8 GB, OS X 10.15 | located in Winterthur Switzerland.

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                              • Marci
                                Marci last edited by

                                @DusX if you weren't in Canada I'd send you over one of mine...!

                                rMBP 11,3 (mOS 10.13) / rMBP 11,4 (mOS 10.14) / 3x Kinect + Leap / TH2Go
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                                • DusX
                                  DusX Tech Staff last edited by

                                  Where are you @Marci ?

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                                  • Marci
                                    Marci last edited by

                                    Near Leeds, UK. @skulpture - I tried that Processing sketch this evening. Sadly many outdated modules and deprecated functions so a bit of rewriting to get it running with the modern replacements - not quite there yet. I want to use it to get the polygon vectors for the kinect's silhouette - that could then be handed to Izzy's JS actor via OSC, and give us the missing complex polygon mapped to Kinect user outline.

                                    rMBP 11,3 (mOS 10.13) / rMBP 11,4 (mOS 10.14) / 3x Kinect + Leap / TH2Go
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                                    • Skulpture
                                      Skulpture Izzy Guru last edited by

                                      Ah that's a shame. I was working my way through it too. Got the first example working. Basic rgb/ir one.

                                      Graham Thorne | www.grahamthorne.co.uk
                                      RIG 1: Windows 11, AMD 7 Ryzen, RTX3070, 16gig RAM. 2 x M.2 SSD. HD. Lenovo Legion 5 gaming laptop.
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                                      • DusX
                                        DusX Tech Staff last edited by

                                        @skulpure With nimate can you get a set of xy points for body parts and joints?

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                                        • Marci
                                          Marci last edited by

                                          Yep. xyz for head, neck, l-shoulder, r-shoulder, l-elbow, r-elbow, l-hand, r-hand, torso, l-hip, r-hip, l-knee, r-knee, l-foot, r-foot. That's the 'basic' skeleton from NIMate1. NIMate2 adds in finger joints and a few other bits n' bobs.

                                          rMBP 11,3 (mOS 10.13) / rMBP 11,4 (mOS 10.14) / 3x Kinect + Leap / TH2Go
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                                          • DusX
                                            DusX Tech Staff last edited by

                                            Thats great, thanx.

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