Algodoo

After the data has been plotted, if the engine and dyno remain running for another 45 seconds or so, they both explode!

Please confirm that in case it might be something caused by my own computer.

I need to turn the motor off after the test. I will take this scene off-line while I fix it.

P.S.: The motor now turns off after the test but the motor may still break at high RPM. The chart now updates during the test. This can be turned on or off with the _liveUpdate parameter in the hinge.

That fix it.

It's a nice concept! I have no idea why the engine blows up but it did happen to me with the previous version too. i tried looking for directSolver errors in this version and there seem to be none though.

the reason my dyno displays data as it does is because of lag. The previous versions of the dynos (the ones with physical dials and sliders) used the plot's ability to smooth the graph as the only way to display readable data (without smoothing, the graph was a fuzzy mess). the problem there was that 1 point per scene step would be shown, so after seconds of running a dyno test your scene would get laggy, and it'd get worse until it finished (making tests extremely slow and time-consuming). I still haven't found out how exactly Algodoo smooths that well, but my workaround was make individual, fixed-rpm tests averaging out the readings, and then print out the points in rapid succession at the end, which also gives you the benefit of needing a tiny amount of smoothing (which is laggy) to present a nice looking set of curves.

I might make something like your graph widget though, eventually. It lags a llittle on my end, not sure why, but I believe it's just the spawning

The Linkage,

Setting hinge._liveUpdate to false will reduce lag since it will make just one plot at the end as opposed to constant updating. I suspect that Algodoo's plot uses exponential smoothing which is equivalent to a low pass filter. I think your averaging method is faster and more accurate. I liked your flashing cursor on the GUI input so I updated my GUI textbox to include a flashing cursor on the second click (first click highlights everything). Check out the text boxes on COVID-19 Simulation II.

Thank you Steve, very cool!