text: # Copyright (c) 2012-2020 Esri R&D Center Zurich
  
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  
  #   http://www.apache.org/licenses/LICENSE-2.0
  
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  # A copy of the license is available in the repository's LICENSE file.
  
  import sys
  import os
  
  import pyprt
  from pyprt.pyprt_utils import visualize_prt_results
  
  CS_FOLDER = os.path.dirname(os.path.realpath(__file__))
  
  
  def asset_file(filename):
      return os.path.join(CS_FOLDER, 'data', filename)
  
  
  # PRT Initialization
  print('\nInitializing PRT.')
  pyprt.initialize_prt()
  
  if not pyprt.is_prt_initialized():
      raise Exception('PRT is not initialized')
  
  # Data
  rpk = asset_file('extrusion_rule.rpk')
  attrs = {}
  
  # STEP 1: Initial Shape (vertices coordinates)
  initial_shape1 = pyprt.InitialShape(
      [0, 0, 0,  0, 0, 100,  100, 0, 100,  100, 0, 0])
  
  # PRT Generation
  print('\nFirst Generation:\n')
  m1 = pyprt.ModelGenerator([initial_shape1])
  model1 = m1.generate_model([attrs], rpk, 'com.esri.pyprt.PyEncoder', {})
  visualize_prt_results(model1)
  
  # STEP 2: Initial Shape (OBJ file)
  initial_shape2 = pyprt.InitialShape(asset_file('building_parcel.obj'))
  
  # PRT Generation
  print('\nSecond Generation:\n')
  m2 = pyprt.ModelGenerator([initial_shape2])
  model2 = m2.generate_model([attrs], rpk, 'com.esri.pyprt.PyEncoder', {})
  visualize_prt_results(model2)
  
  # PRT End
  print('\nShutdown PRT.')
  pyprt.shutdown_prt()
  