city_retrofit/hub/exports/formats/glb.py

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import glob
import os
import shutil
import subprocess
from hub.city_model_structure.city import City
from hub.exports.formats.obj import Obj
class GltExceptionError(Exception):
"""
Glt execution error
"""
class Glb:
def __init__(self, city, path, target_buildings=None):
self._city = city
self._path = path
if target_buildings is None:
target_buildings = [b.name for b in self._city.buildings]
self._target_buildings = target_buildings
self._export()
@property
def _obj2gtl(self):
"""
Get the SRA installation path
:return: str
"""
return shutil.which('obj2gltf')
def _export(self):
try:
for building in self._city.buildings:
city = City(building.lower_corner, building.upper_corner, self._city.srs_name)
city.name = building.name
city.add_city_object(building)
Obj( city, self._path)
glb = f'{self._path}/{building.name}.glb'
subprocess.run([
self._obj2gtl,
'-i', f'{self._path}/{building.name}.obj',
'-o', f'{glb}',
'-b',
'--normalTexture', f'{self._path}/{building.name}.mtl'
])
os.unlink(f'{self._path}/{building.name}.obj')
os.unlink(f'{self._path}/{building.name}.mtl')
except (subprocess.SubprocessError, subprocess.TimeoutExpired, subprocess.CalledProcessError) as err:
raise GltExceptionError from err