Life is not a long quiet river...
This week-end, I again encountered problems with the 2 spinners. I had solved the spinner problems (before integrating FizX) by changing the T1 model to a T2 model (larger) because the ball sometimes blocked on the T1 model. With the XML parameters required by FizX, the ball no longer blocks on the T1 model (good !). So I went back to a T1 model (because the T2 model is ugly in narrow lanes), but the problem of spinners that get stuck in a horizontal position has made a comeback... again.
I tried changing the XML spinner settings without success.
So I took the bull by the horns ! (French expression).
I wrote a script to control the spinner rotation at the end of the stroke. When the spinner spins at less than 4 revolutions per second, I release the angulardamping (thanks to BAM !
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). This prevents the spinner from braking too quickly and stopping in a wrong position (horizontal for example...). When the spinner spins at about 1 revolution per second, I start to control its angle. When the spinner reaches an angle of 30 to 60 degrees before vertical (vertical = 180° or 360°), I raise the angulardamping. This slows down the spinner more strongly, which stops around the vertical position (at 180° or 360°), what is the desired effect.
I handled 2 exceptions :
- when the ball speed is low, the spinner can start spinning with a speed lower than 4 rotations per second. In this case, I release the angulardamping from the start.
- with a low angulardamping, when the spinner is almost at a standstill, it risks starting to oscillate. In this case, I raise the angulardamping even if the spinner has not reached the desired angle.
I did some tests and it seems to work very well, now.
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Cherry on the cake (French expression), it is possible to force the spinner to stop by always presenting the same face.
I hope that was the last problem to fix before publishing the table.