Direct Expression To Motion Tracker

[Dan Ebberts]

You can add a y offset to an expression by appending someting like this to your expressin (in this example the y offset would be 100):

(your expression here) + [0,100]

Dan

[Mike Clasby]

This expression seems to work, on the Start Point (for Lightning, I presume):

yOff = 100 //amount of y offset;
xOff = 0 //amount of x offset;

xAttach = motionTracker(“Tracker 1”)(“Track Point 1”).attachPoint[0];
yAttach = motionTracker(“Tracker 1”)(“Track Point 1”).attachPoint[1];

[xAttach + xOff, yAttach + yOff]

I got it by pickwhipped to the x and y tracker values, then adding in an offset.
If your tracker is tracker 2, then you need to change it to “Tracker 2”. Also, my lightning is on the same layer as the tracking, write back if they are different layers.

[Mike Clasby]

Oops, didn’t see Dan, I need to refresh before I post, or be a lot faster figuring this stuff out.

[Cutter Johnston]

Thanks!!!!!!