X and Y postion link to X and Y roetion element 3D

[Arjen Klerkx]

Hi there, I have the Halloween pack of Element 3D. There is an eye obj. This eye I want to follow a null. The null has x,y position. And the eye has X,Y, rotation. How to make the expression that he eye is always following the null? thank in advance. Greetings Arjen

[Mylenium]

There is any number of "targeting" expressions. A simple web search can turn up the various solutions using lookAt() or Math.atan() or even more complex solutions with custom vector math. Entirely depends on what you need.

Mylenium

[Arjen Klerkx]

Thank you for the quick answer. Unfortuanlly my expression knowledge isn't gooing that far. Can you be more specific? thnks

[Mylenium]

Could be as trivial as

mPos=thisComp.layer("Group 1 Null").transform.position;

mTar=thisComp.layer("Target").transform.position;

lookAt(mPos,mTar)

You just need to create the reference Nulls for the Group in E3D and create the target Null.

Mylenium