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I have a very simple (and maybe too primitive to post here but I’ll try anyway :P) question about Bullet constraints. What are arguments const btTransform &frameInA, const btTransform &frameInB, bool useLinearReferenceFrameA of Bullet’s btGeneric6DofConstraint? Documentation doesn’t say anything about them.

I think (but am not entirely sure) that the first two are Pivot Point Transformations relative to mass-center of two rigid bodies (in their own coordinate systems). And thus they should always point to the same point in world-space. Is that true?

Also, what is Linear Reference Frame?

Thank you in advance for replies and pardon me if this question is already answered and I could find this answer.

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