Rotate game object around a arbitrary line ( not through origin)

Questions & Answers
1

I have a gameobject that needs to rotate around an arbitrary line that does not go through the origin.

Any help is greatly appreciated it.
Cheers.

2

What about Transform.RotateAround? It rotates the object around the specified axis and position. Supposing that you want to rotate around the line defined by points A and B, for instance, the code could be something like this:

public var speed: float = 45; // rotation speed in degrees/second
public var A: Vector3; // point A
public var B: Vector3; // point B

function Update(){
  var axis: Vector3 = B - A; // calculate axis
  // rotate around point A, perpendicular to axis
  transform.RotateAround(A, axis, speed * Time.deltaTime);
}
3

simple man,
put a empty game object in the origin and child ur game object to the empty object
then move that game object to the arbitrary , finally rotate that empty parent object