unity - camera smooth follow

if(cameraFollowX)

{

Vector3 targetPos = new Vector3(cameraTarget.transform.position.x, thisTransform.position.y, thisTransform.position.z);

Vector3 localVel = new Vector3(velocity.x, 0.0f, 0.0f);

thisTransform.position = Vector3.SmoothDamp(thisTransform.position, targetPos, ref localVel, smoothTime);

}

if(cameraFollowY)

{

Vector3 targetPos = new Vector3(thisTransform.position.x, cameraTarget.transform.position.y, thisTransform.position.z);

Vector3 localVel = new Vector3(0.0f, velocity.y, 0.0f);

thisTransform.position = Vector3.SmoothDamp(thisTransform.position, targetPos, ref localVel, smoothTime);

}