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convert left-handed camera position and rotation keyframes to right-handed

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John Pilgrim
convert left-handed camera position and rotation keyframes to right-handed
on Oct 3, 2014 at 5:50:26 am

I received a bunch of matchmove cameras from pfTrack that are in left-handed coordinates (i.e., positive Z is into the screen).

Does anyone have the correct expressions to convert the position and rotation values to the right-handed coordinates that After Effects prefers.

I plan on simply creating a new camera and assigning the appropriate expressions to the position and rotation values to pull and convert from the original left-handed camera layer.

Thanks in advance!

Kindly,
John
SF, CA


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Kevin Camp
Re: convert left-handed camera position and rotation keyframes to right-handed
on Oct 3, 2014 at 7:44:05 pm

try simply making the values negative with an expression like this:

-value;

if that doesn't do what you need, let us know.

Kevin Camp
Art Director
KCPQ, KZJO & KRCW


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John Pilgrim
Re: convert left-handed camera position and rotation keyframes to right-handed
on Oct 7, 2014 at 6:48:08 am

Would that it were so easy!
The maths seem to be rather more complex than that:
http://answers.unity3d.com/storage/attachments/12048-lefthandedtorighthande...


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