Rotating One Object Relative to Another

How do I rotate a transform relative to another transform?

There's relativeTo = Space.Self and relativeTo = Space.World, but nothing allowing me to execute the rotation relative to another object/transform.

But I know there's got to be a way to do it. ;-)

 

maybe something along the lines of using

transform.rotation *= target.rotation - transform.rotation

somewhere in your rotation. maybe. not sure what you're going for and don't know if there's a built in.

 

For example, if I had an "earth" object and a "moon" object, neither of which are at World (0,0,0), and I wanted to rotate the moon about the earth, how would I do that?

 

If you drag your moon object to be a child of your earth object in the hierarchy view, it will automatically rotate around it's parent.

 

Good point.

But I don't want the earth and moon to be grouped and I want the earth to not rotate. Just the moon.

 

http://unity3d.com/Documentation/ScriptReference/Transform.RotateAround.html ?

 

Hey! There you go!

Thanks, Matthew and all!