#reference - http://thebuildingcoder.typepad.com/blog/2013/03/rename-view-by-matching-elevation-tag-with-room.html

import math
import clr
clr.AddReference("RevitNodes")
import Revit
clr.ImportExtensions(Revit.Elements)

clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

clr.AddReference("RevitAPI")
import Autodesk
from Autodesk.Revit.DB import *

import System
from System.Collections.Generic import *

doc = DocumentManager.Instance.CurrentDBDocument
uiapp = DocumentManager.Instance.CurrentUIApplication

def angles_yo(x,y):
    radian_angle = math.atan2(x-0,y-0)
    degrees_angle = math.degrees(radian_angle)
    return degrees_angle

def direction_yo(angle):
    if angle <= -45 and angle >=-135:
        return "EAST"
    if angle <= -135 and angle >= -180 or angle >= 135 and angle <= 180:
        return "NORTH"
    if angle >= 45 and angle <= 135:
        return "WEST"
    if angle >= -45 and angle <=45:
        return "SOUTH"

view_sections = FilteredElementCollector(doc).OfClass(ViewSection).WhereElementIsNotElementType().ToElements()

room_at_point_out = []
location_point_out = []
view_section_name_out = []
set_param_out = []
room_name_out = []
new_name_out = []
new_names = []
dones = []
outs = []

unique_names = []

for view_section in view_sections:
    if view_section.LookupParameter("Type").AsValueString() == "Interior Elevation":

        view_section_name_out.append(view_section)

        xmax = (UnwrapElement(view_section).CropBox.Max.X)
        xmin = (UnwrapElement(view_section).CropBox.Min.X)
        ymax = (UnwrapElement(view_section).CropBox.Max.Y)
        ymin = (UnwrapElement(view_section).CropBox.Min.Y)
        zmax = (UnwrapElement(view_section).CropBox.Max.Z)
        zmin = (UnwrapElement(view_section).CropBox.Min.Z)


        location_point = Autodesk.Revit.DB.XYZ(xmax-0.5*(xmax-xmin),ymax-0.5*(ymax-ymin),0)
        location_point_transform = view_section.CropBox.Transform.OfPoint(location_point)
        location_point_out.append(location_point_transform)
        try:
            room_at_point = doc.GetRoomAtPoint(location_point_transform)
            room_at_point_out.append(room_at_point)
            room_number = room_at_point.Number.ToString()
            room_name = room_at_point.LookupParameter("Name").AsString()
            room_name_out.append(room_name)

            elevX = view_section.ViewDirection.X
            elevY = view_section.ViewDirection.Y

            view_angle = angles_yo(elevX,elevY)
            direction = direction_yo(view_angle)

            TransactionManager.Instance.EnsureInTransaction(doc)

            new_name = (room_number + " " + room_name + " - " + direction)
            new_names.append(new_name)

            for name in new_names:
                base_name = name
                new_name = base_name
                counter = 1
                while new_name in unique_names:
                    counter += 1
                    new_name = base_name + " " + str(counter)
                unique_names.append(new_name)

            view_name_param = view_section.get_Parameter(BuiltInParameter.VIEW_NAME)
            done = view_name_param.Set(new_name)
            dones.append(done)

            TransactionManager.Instance.TransactionTaskDone()
        except:
            pass


OUT =dones, unique_names