Rotate object to face up from sphere

Question

I need to rotate an object so that it is always "up" from a sphere like it would be on a planetary surface. I have tried using Quaternion.LookRotation but as you would guess this just makes the object face the ground. Is there an easy way to go about calculating the rotation of the object so it is always up relative to a point on a sphere?

Answer 1

Best Answer

Answer by robertbu · Jul 27, 2013 at 10:33 PM

Try adding this logic to your object:

 var sphere : Transform;
 
 function Update() {
     var v3 = transform.position - sphere.position;
     transform.rotation = Quaternion.ToFrom(transform.up, v3) * transform.rotation;
 }

Add comment · Show 1 · Share

FeenikxFire · Jan 22, 2017 at 06:32 AM 0

Share

I'm currently on Unity 5.5.0f3 and the updated version of

 transform.rotation = Quaternion.ToFrom(transform.up, v3) * transform.rotation;

is now

 transform.rotation = Quaternion.FromToRotation(transform.up, v3) * transform.rotation;

Rotate object to face up from sphere

1 Reply

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions