Algodoo

Nice demo scene!

I played around with various parameters, and, as a result, I got the spaghetti to break in a way that is more like a piece of natural spaghetti. That is, the stick now breaks in 3 to 5 pieces (not counting the two end stubs which never break off). I set the sim frequency to 390 Hz, and I set both drive motors to 7.0 RPM. I also check-marked the "toggle" box for the left arrow key so that I don't have to manually hold it down.

Xray,

Thanks for the feedback. I tried those parameters and got similar results. I also tried various combinations of force and torque on the ends of the spaghetti. I liked the results of using your parameters, but felt uneasy that the scene performed well for only a small range of frequencies.

The scene is much more interesting now. Good job on the enhancements!

Just curious -- Why do you set the sim time factor to: 1.0 / sim.frequency? Is there an important relationship between the time factor and the frequency which must be maintained?

Thanks

I think that sim.timeFactor = 1.0/sim.frequency shows every time step, but I'm not absolutely sure.

use totimp3 instead of angle, simpler and better working

Thanks for the suggestion, but I was not able to improve the performance. Maybe I'm missing something. If I didn't change box color with torque, then I believe your suggestion would be faster.

Details:

I replaced
a := _abs(g1.angle - g0.angle);
g0.colorHSVA = [235.0 - 3133.0 * a, 1, 1, 1];
g1.colorHSVA = [235.0 - 3133.0 * a, 1, 1, 1];
with
torque := ((readable(owner)).totImp3)(2)*sim.frequency;
g0.colorHSVA = [235.0 + 1e6*torque/3.0, 1, 1, 1];
g1.colorHSVA = [235.0 + 1e6*torque/3.0, 1, 1, 1];
and

a > 0.075 ? {
with
torque < -0.00075 ? {

The scene went from 80% of simulation time to 62%. I then tried coloring 1 box per hinge, which sped things up, but caused one end of each of the larger pieces to stay red.