Advance info on Joints : Walaber plz take a look

Hi

So I was trying the Rigid Joint and there were a few member function that I couldn't make sense of first up. I'm going to play around and experiment a bit more, but I would appreciate if someone can shed some light on:-

testJoint1->setRowAcceleration(real);
testJoint1->setRowSpringDamper(real,real);
testJoint1->setRowStiffness(real);

Basically, what a row is and what these parameter mean in the context of rows.

Walaber, I know not many will be able to answer this (no offense guyz ) so plz take the time to answer it.
Appreciate it all

Regards,
Nik

Oh.. come on.. plz reply.... anybody.. i'm just starting with joints.. I want a joint that can rotate only around one particular Vector and behaves like a spring.



I've shown the joint as a zig-zag blue line coz I want the length to be varying, depending on the acceleration produced by parent.
E.g - If the parent body suddenly accelerates in a direction perpendicular to the Red arrow, then the child will follow but there'll be some lag, the blue joint should be flexed a bit as compared to how it is at rest..

I can try and get down and dirty with joints, but wondering if one of the prebuilt joints can be tweaked to work like this.. ??

Regards
Nikhil

The custom joints are pretty complex... basically, the addLinearRow() takes 2 points in global space (1 on each body), and tries to make the relative velocity between those 2 points along the given vector reach zero.

that's the simplest explanation I can give really... it's pretty hard to wrap your head around, and I still get confused creating my own custom joints sometimes as well.

cn you try to explain the joint you want to make in more detail? I'm still a little confused.

I thought the joints were "stiff", ie. no springs or other deformation that requires dynamics. Am I wrong?