105 lines
2.5 KiB
Python
105 lines
2.5 KiB
Python
"""
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CityObject module
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SPDX - License - Identifier: LGPL - 3.0 - or -later
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Copyright © 2020 Project Author Guille Gutierrez guillermo.gutierrezmorote@concordia.ca
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"""
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from typing import List, Union
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from city_model_structure.attributes.surface import Surface
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from helpers.geometry_helper import GeometryHelper
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from city_model_structure.attributes.polyhedron import Polyhedron
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import math
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class CityObject:
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"""
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class CityObject
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"""
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def __init__(self, lod, surfaces, name):
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self._name = name
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self._lod = lod
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self._surfaces = surfaces
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self._detailed_polyhedron = None
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self._simplified_polyhedron = None
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self._geometry = GeometryHelper()
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@property
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def lod(self):
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"""
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City object level of detail 1, 2, 3 or 4
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:return: int
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"""
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lod = math.log(self._lod, 2) + 1
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return lod
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@property
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def volume(self):
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"""
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City object volume in cubic meters
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:return: float
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"""
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return self.detailed_polyhedron.volume
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@property
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def detailed_polyhedron(self):
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"""
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City object polyhedron including details such as holes
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:return: Polyhedron
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"""
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if self._detailed_polyhedron is None:
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polygons = []
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for surface in self.surfaces:
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polygons.append(surface.solid_polygon)
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if surface.hole_polygons is not None:
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for hole_polygon in surface.hole_polygons:
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polygons.append(hole_polygon)
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self._detailed_polyhedron = Polyhedron(polygons)
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return self._detailed_polyhedron
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@property
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def simplified_polyhedron(self):
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"""
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City object polyhedron, just the simple lod2 representation
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:return: Polyhedron
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"""
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if self._simplified_polyhedron is None:
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polygons = []
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for surface in self.surfaces:
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polygons.append(surface.perimeter_polygon)
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self._simplified_polyhedron = Polyhedron(polygons)
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return self._simplified_polyhedron
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@property
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def surfaces(self) -> List[Surface]:
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"""
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City object surfaces
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:return: [Surface]
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"""
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return self._surfaces
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def surface(self, name) -> Union[Surface, None]:
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"""
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Get the city object surface with a given name
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:param name: str
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:return: None or Surface
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"""
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for s in self.surfaces:
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if s.name == name:
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return s
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return None
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@property
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def location(self):
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"""
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City object location
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:return: [x,y,z]
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"""
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return self.simplified_polyhedron.center
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@property
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def max_height(self):
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"""
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City object maximal height in meters
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:return: float
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"""
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return self.simplified_polyhedron.max_z
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