Pointing a child at an object using its parents rotation

Questions & Answers
1

Hi I have a system where an object’s child has to face a target I require the entire object to be rotated so the child is facing the target but cant seam to work out the correct quaternion combination. I currently have this which seams to work fine except in some odd circumstances.

	transform.rotation = Quaternion.RotateTowards(transform.rotation,
			                   transform.rotation * Quaternion.FromToRotation(
			                          child.transform.forward,
			                                target.position-child.transform.position)
                                                    ,temprotspeed * Time.deltaTime);

I know I basically need to apply a rotation that is zero when the child is facing the object but cant seam to work it out…and im sure its something rather easy…

Any help would be appreciated

2

how about using this Function instead :

var relativePos = target.position - transform.position;
var rotation = Quaternion.LookRotation(relativePos);
transform.rotation = rotation;