expression for light saber tip

Scripting for After Effects

expression for light saber tip

Postby Mistercat on 08/18/2017, 9:58 am

saber track.png
I've been asked to create a light saber for a little corporate video. The guy is holding a handle without a "blade" that would have allowed me to tracked the tip. He's not moving around much for this shot, but of course he's not steady either. There is enough handle showing that I tracked two points to get the position and rotation of the handle. What I can't figure out is how to make the end point tie into the tracking data that was tracked on the handle so that the tip moves correctly. I would think an expression could make this work but not sure how to do that. Any suggestions on how to do this?

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