Take the rotation of one object and import it into another on a single axis.

Unity Engine
1

I would like to take the Y rotation of one object and paste it into another, but I’m having a hard time understanding how Unity handles rotations. I have read the manual on Quaternions and I’m not sure how I should write my C# code.

Taking the position of one object using Vertex3 is easy enough but I’m having a hard time understanding if I have to use euler angles. I understand a single rotation axis can not be represented in euler angles since quaternions have to be represented with XYZW at all times. I don’t want to know the actual angle. I just want to copy it. I don’t care about the math that Unity does behind the scenes.

I’m essentially unsure of the exact line of code to use.

2

if you want the global rotation you could write it like either one of these lines:

transform.Rotate(0,transform2.eulerAngles.y-transform.eulerAngles.y,0,Space.World);
transform.eulerAngles = new Vector3(transform.eulerAngles.x,transform2.eulerAngles.y,transform.eulerAngles.z);

with unitys transform functions there is usually no need to edit a quaternion directly.

3

Thanks a lot. I don’t know why I had so much trouble with this.