city_retrofit/exports/exports_factory.py

"""
ExportsFactory export a city into several formats
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2020 Project Author Guille Gutierrez guillermo.gutierrezmorote@concordia.ca
"""

from exports.formats.stl import Stl
from exports.formats.obj import Obj


class ExportsFactory:
  """
  Exports factory class
  """
  def __init__(self, export_type, city, path):
    self._city = city
    self._export_type = '_' + export_type.lower()
    self._path = path

  @property
  def _citygml(self):
    """
    Export to citygml with application domain extensions 
    :return: None
    """
    raise NotImplementedError()

  @property
  def _stl(self):
    """
    Export the city geometry to stl
    :return: None
    """
    return Stl(self._city, self._path)

  @property
  def _obj(self):
    """
    Export the city geometry to obj
    :return: None
    """
    return Obj(self._city, self._path).to_ground_points()

  @property
  def _idf(self):
    """
    Export the city to Energy+ idf format
    :return:
    """
    raise NotImplementedError()

  @property
  def export(self):
    """
    Export the city model structure to the given export type
    :return: City
    """
    return getattr(self, self._export_type, lambda: None)