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Question by Freelanzer · Oct 07, 2012 at 03:15 PM · vector3sphereorbitairplanemove object

Move object from A to B around Zero

How do I get an object to move from it's current position A (transform.position) towards position B (a Transform variable) moving around Zero (Vector3.Zero)?

Here's a mock up of what I have in mind: alt text

Think of it like an airplane flying from one city to another across the surface of a sphere, the sphere is placed in zero.

Help will be much appreciated. Many thanks in advance.

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Answer by Willemvd · May 16, 2014 at 07:14 AM

Hey

You can slerp the object around the planet....

     public Transform _origin;
     public Transform _destination;
     public Transform _planet;
     public float journeyTime = 1.0F;
     private float startTime;
 
     void Start() {
         startTime = Time.time;
     }
     
     void Update() {
         Vector3 center = _planet.transform.position;
         center -= new Vector3(0, 1, 0);
         Vector3 riseRelCenter = _origin.position - center;
         Vector3 setRelCenter = _destination.position - center;
         float fracComplete = (Time.time - startTime) / journeyTime;
         transform.position = Vector3.Slerp(riseRelCenter, setRelCenter, fracComplete);
         transform.position += center;
     }
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