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How can I add a force which magnitude determined by distance between two specific nodes? Not simple function as spring, but user defined relationship.
you could create a non-linear spring with a user-defined stiffness (force x deflection).
I want to create the spring with cycling behavior, like this:
if (If the remainder of time divided by two is less than 1) { Force = spring displacement*2 - spring speed *1}
if (If the remainder of time divided by two is more than 1) { Force = -spring displacement*2 + spring speed *1}
Is that kind of complicated function possible?