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Hi,
I am using tracking tools. If I have a rigid body defined with 4 markers and one goes out of view, is it's coordinates still recorded (by virtue of tracking tools knowing the position of the other 3 markers and that they all make a rigid body).

If not, is it possible to define a 'virtual marker position' on a rigid body. For example, I want to track hand writing. I would like to make a rigid body out of a pencil and specify the tip as a 'virtual marker' so that its position can be computed from the other 3-4 markers at top of the pencil.

Thanks for any advice.
Best,
Gene

generally yes the software is going to be able to continue to track the RB, if one of the points is excluded for a period, and you have enough other points for reconstruction.