Got a question I know there is a way to do a single axis lookat constraint but for the life of me I cant seem to figure it out right now!  I have a camera moving around up and down left and right and I want a plane to look at that camera but only rotate in the z axis not the x or y, how do I set that up?

Here the plane is looking at a dummy attached to the camera, but in Link Info Inherit Move is disabled on the Z axis. Is this right?

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12823_LNvQc8GwnBcwAFCyTAAq.zip

no, i want it to only rotate in the z axis - no other movements!

See the file, I think that’s what it does.

thanks i knew it was simpler then i was trying to make it, its just not something i do very much.... so if i copy that plane not say 100x as instance it will always be looking at the dummy right?

so if i copy that plane not say 100x as instance it will always be looking at the dummy right?

Yes, the copies will have the same look at controller.

hi,
Let me provide another approach.
You can do this by calculating the vactor between the plane object and camera
(this is your aiming row of matrix , just like look constraint does. )
the set the second and third to identity

Here is the example below.

	Attachment
12846_nlJvmfDlk0ZXCcwtkJOb.zip

Another simple solution.

Make an object look at the object you are going to track.
Have the object you are applying the look at controller to parented an object that have been aligned to it.
Use the Expose Transform Helper to get the rotation values for the look at object.
Wire the object that you want to have rotate on only one axis to the exposed local axis that you need.

Paul Neale
PEN Productions Inc.
penproductions.ca / paulneale.com
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