How to clamb a shape movement around another by cos,sin expression

[yoyopopo]

Hi everyone

first of all I abolgize about my bad english.

I need to setup an expression that allow me to move an element manually just around another.

I now that I can move a layer around another by cos & sin expression but then I cant move it manually.

any suggestion ?

[Dan Ebberts · Accepted solution]

Try this position expression:

radius = 100;
p = thisComp.layer("Other Layer").position;
v = position - p;
length(v) > .001 ? p + normalize(v)*radius : p + [radius,0]

[yoyopopo]

It's work. Thank you very much!