NavMeshAgent start from current position and specific view

I want to make First Person Controller to navigate from points selected by mouse. Actions like mouse wheel and pan are taken in order to select points of the route, but the perfect view which is set for the Main Camera will be changed. So, can anybody know how to keep the view and make NavMeshAgent start from current position? I can only make NavMeshAgent keep specific view, but every time it will start from last position not current postion. Here is how I realize it.

  //routePoints - points selected by mouse
 void OnStartRoute()
     {
         if (routePoints.Count > 1)
         { 
           GameObject man = GameObject.Find("First Person Controller");
           NavMeshAgent navAgent = man.GetComponent<NavMeshAgent>();
           pointsIndex = 0;
           camMain.transform.rotation = rotation;
           NavMeshPath path = new NavMeshPath();
           if (navAgent.CalculatePath(routePoints[pointsIndex], path))
          {  
 ``          camMain.transform.position = new Vector3(navAgent.path.corners[0].x, 2.5f,            navAgent.path.corners[0].z);
            navAgent.SetDestination(routePoints[pointsIndex]);
            isStartRoute = true;
       }
      else
       {                     
          return;
       }
   }
 }
 void Update()
 {
  if(isStartRoute)
    {
      float remainDis = navAgent.remainingDistance;
      if(remainDis<5f)
      {
         if(pointsIndex<routePoints.Count-1)
         {
            pointsIndex++;
            NavMeshPath path = new NavMeshPath();
            if (navAgent.CalculatePath(routePoints[pointsIndex], path))
             {  
                navAgent.SetPath(path);
             }
 ``          else
             {  
 `               isStartRoute = false; 
                 return;
             }
             }
             }
             if (remainDis == 0f)
             {
                 isStartRoute = false;                
             }
         }
 }

Anybody help? Thanks!