topic Re: LookAt flipping in 3ds Max Animation and Rigging Forum

LookAt flipping

Anonymous — Mon, 01 Aug 2016 19:58:09 GMT

As I understood this is the famous issue.
But unfortunately I haven't found good solution. Please, do not bit me 😃

I added a video file to understand the problem with LookAt constraint.

Guy, if somebody had such issue please, help !

Re: LookAt flipping

ads_royje — Tue, 02 Aug 2016 11:04:09 GMT

Hello,

thanks for sharing the video, this is most likely the upnode.

By default, the upnode for the look at is set to World, the Axis is Z.

When you reach that point in the middle, the lookat flips.

That is 'expected'.

For that you can gain full control of the lookat by picking a object in the scene, that you'll have to parent in your rig to follow it.

In the LookAt parameters, there is a Slect Upnode. The default is World checked, use the button to pick a node for the upnode and uncheck World.

Place your upnode object somewhere higher than the lookat controlled object, and somewhere in front or in the back so it does not flip for your motion range.

Also attached a video showing the effect.

Hope that can help! 🙂

Re: LookAt flipping

Anonymous — Thu, 25 Aug 2016 17:48:46 GMT

Hi ads_royje,

Yes it solved my problem.

Big Thanks !!!