Quaternion.Lerp not working properly in Unity3d

Question

I'm using Quaternion.Lerp to rotate a joint with a certain angle, but when I use the below code I find the joint rotating very far although I specified it to rotate with only 5. Any thoughts please?

newRot.y += currentTransform.localRotation.y + 5f;
blendWeight = 0;
if ( blendWeight < 1)
{
    animationRotation = currentTransform.transform.localRotation;
    newRotation = Quaternion.Euler(newRot.x, newRot.y, newRot.z);
    blendWeight += Time.deltaTime/0.9f;
    currentTransform.transform.localRotation = Quaternion.Lerp (animationRotation,newRotation, blendWeight);
}

where newRot is a Vector3

Answer 1

If you want to add 5 degrees to y, you must use eulerAngles and not directly rotation (which il a quaternion). Generaly speaking you should never set the xyzw components of a quaternion.

If you want y slowly rotates an object, consider using RotateTowards (for a given target orientation) or transform.Rotate (for a given speed).