Aligning an object's rotation direction to a vector

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How do you align an object's rotation direction to a vector?

Answer 1

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Answer by Mike 3 · May 05, 2011 at 06:11 AM

transform.rotation = Quaternion.LookRotation(directionVector);

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ina · May 05, 2011 at 07:29 AM 0

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what do you do if the object's axis is off by "90" degrees?

Koyemsi ina · Dec 03, 2020 at 03:53 PM 0

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Not sure to understand the question, but you can try Quaternion.FromToRotation() to change some direction into another, or differently said, to change the object's reference axis.

For example :

transform.rotation = Quaternion.LookRotation(directionVector) * Quaternion.FromToRotation(Vector3.right, Vector3.forward);

roamcel · Jul 28, 2011 at 12:56 PM 0

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I still haven't found an answer to that very question, ina

Fenyx · Feb 28, 2015 at 03:17 PM 2

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This worked for me;

 private Quaternion _facing;
 
 void Start () {
     //Grab the offset at the start.
     //You could also make your own Quaternion but don't use Euler angles it just seems to break things.
     _facing = transform.rotation;
 }
 void Update () {
     var rotation = Quaternion.LookRotation(directionVector.normalized);
     rotation *= _facing;
     transform.rotation = rotation;
 }

Answer 2

Answer by iwaldrop · Mar 23, 2012 at 08:42 AM

To rotate an object to face a desired orientation, perform the following on LateUpdate():

transform.Rotate(Vector3.right/up/forward, float);

ex:

void LateDraw() { this.transform.Rotate(Vector3.up, 90); }

this will set the rotation each frame to whatever you need it to be. The example illustrates a 90˚ since that's the rotation offset of most imports...

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Aligning an object's rotation direction to a vector

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