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A Question about Expressions

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Sascha Engel
A Question about Expressions
on Jul 30, 2010 at 12:55:11 pm

I pick-wipped a position of a lens flar to the Position of a Null Layer (Tracking Data).
NOw, the Flare is following the shot in the right way, but unfortunately the beginning position of the Flare is wrong. Where and How do I have to ad the offset x and y co-ordinates to reposition the flare?


Thanx a lot.

Sascha


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Bartek Skorupa
Re: A Question about Expressions
on Jul 30, 2010 at 1:23:59 pm

You could for example add the following to the expression generated by the pick-whip:

+value

This means that the original value of the flare position will be added to the pick-whipped value.
This way you can easily change the original value so that it matches your needs.

Bartek Skorupa
Warszawa, Poland


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Sascha Engel
Re: A Question about Expressions
on Jul 30, 2010 at 2:16:38 pm

Tried it, it's a rather difficult, cause it is adding to existing value - it involvves quiet a bit trial and error. I remember, there's just some information you can ad to the x and y axis to shift it a certain amount of pixels.

Sascha


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