1. When he is drawing a circle, how does the computer know he is drawing it to select piece(s) and not for example to make a large wheel.

  2. When he drew the wheels to the car, they intersected with a line and didn’t contain any complete shape. Also, when he drew the marble-like things, they didn’t contain any objects, so the interpreter could decide that they weren’t selections.

    That’s my guess, at least. If you wanted to draw a large wheel behind or in front of other things, maybe you have to draw it off the objects and drag it over.

  3. Its put out by Pintar Media, and the one in this video is VirtuaLab Mechanics. There is a free Lite version that is downloadable. It doesnt have all the features but it is usable for building a bunch of cool Rube Goldberg devices. The full version is pretty cheap, too.

  4. It looks like to me it’s Working Model 2D that they’ve built some kind of overlay graphics drawing tool on top of. I know WM2D has extensive OOP programming capabilities, so they’re probably doing something with that. There are way more tools on the left side than what comes with Pintar Virtualab Mechanics. But it sure looks a lot like WM2D (@ $2500) – and coming from Malaysia (@ $90)?

  5. Andy and John are both half right. They use Sketch Assist(experimental software from MIT, still in development and NOT for sale) AND Working model 2D (from Design Simulation Technology – http://www.workingmodel.com).

    Sketch Assist irecognizes the drawings and transform them into objects WM can understand. The actual simulation is then performed by WM.

    You can actually see the switch between the two software packages when there is a switch from sketch to simulation.

    WM2D is a high end tool for professional Engineers or university students.
    Interactive Physics (IP) is the same tool, but without programming and DXF-import and special meant for physics teaching. (www.interactivephysics.com)

    Pintar VirtaLab Mechanics is even a much more simple tool then IP and only interesting if IP ($ 249) is to expensive. Pintal VL cost only $ 89

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