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support for CityJSON MultiSurface, CompositeSurface & interior faces for cityjson2ifc convert

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This commit is contained in:
Laurens Oostwegel
2021-05-16 18:16:59 +02:00
parent 79ebbb82ef
commit 411855495e
2 changed files with 33 additions and 13 deletions
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src/ifccityjson/cityjson2ifc.py
+1
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@@ -78,6 +78,7 @@ class Cityjson2ifc:
self.IFC_model = ifcopenshell.api.run("project.create_file") self.IFC_model = ifcopenshell.api.run("project.create_file")
self.IFC_project = ifcopenshell.api.run("root.create_entity", self.IFC_model, **{"ifc_class": "IfcProject"}) self.IFC_project = ifcopenshell.api.run("root.create_entity", self.IFC_model, **{"ifc_class": "IfcProject"})
self.properties["owner_history"] = self.create_owner_history() self.properties["owner_history"] = self.create_owner_history()
ifcopenshell.api.run("unit.assign_unit", self.IFC_model)
self.IFC_representation_context = ifcopenshell.api.run("context.add_context", self.IFC_model, self.IFC_representation_context = ifcopenshell.api.run("context.add_context", self.IFC_model,
**{"context": "Model"}) **{"context": "Model"})
self.IFC_representation_sub_context = ifcopenshell.api.run("context.add_context", self.IFC_model, self.IFC_representation_sub_context = ifcopenshell.api.run("context.add_context", self.IFC_model,
src/ifccityjson/geometry.py
+32 -13
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@@ -21,6 +21,9 @@ class GeometryIO:
return self.create_IFC_closed_shell(IFC_model, geometry) return self.create_IFC_closed_shell(IFC_model, geometry)
elif geometry.type in ["CompositeSolid", "MultiSolid"]: elif geometry.type in ["CompositeSolid", "MultiSolid"]:
return self.create_IFC_composite_closed_shell(IFC_model, geometry) return self.create_IFC_composite_closed_shell(IFC_model, geometry)
elif geometry.type in ["CompositeSurface", "MultiSurface"]:
print('compose or multisurface')
return self.create_IFC_surface(IFC_model, geometry)
else: else:
warnings.warn("Types other than solids are not yet supported") warnings.warn("Types other than solids are not yet supported")
return return
@@ -31,8 +34,7 @@ class GeometryIO:
outershell = shell[0] outershell = shell[0]
faces = [] faces = []
for face in outershell: # exterior shell for face in outershell: # exterior shell
for triangle in face: faces.append(self.create_IFC_face(IFC_model, face))
faces.append(self.create_IFC_face(IFC_model, triangle))
shells.append(IFC_model.create_entity("IfcClosedShell", faces)) shells.append(IFC_model.create_entity("IfcClosedShell", faces))
IFC_geometry = IFC_model.create_entity("IfcShellBasedSurfaceModel", shells) IFC_geometry = IFC_model.create_entity("IfcShellBasedSurfaceModel", shells)
@@ -43,8 +45,7 @@ class GeometryIO:
# print(geometry.surfaces[0]['surface_idx'][0]) # print(geometry.surfaces[0]['surface_idx'][0])
faces = [] faces = []
for face in outershell: # exterior shell for face in outershell: # exterior shell
for triangle in face: faces.append(self.create_IFC_face(IFC_model, face))
faces.append(self.create_IFC_face(IFC_model, triangle))
if len(geometry.boundaries) == 1: if len(geometry.boundaries) == 1:
shell = IFC_model.create_entity("IfcClosedShell", faces) shell = IFC_model.create_entity("IfcClosedShell", faces)
@@ -60,22 +61,40 @@ class GeometryIO:
# print(triangle) # print(triangle)
# print(geometry.boundaries) # print(geometry.boundaries)
def create_IFC_surface(self, IFC_model, geometry, surface_id): def create_IFC_surface(self, IFC_model, geometry, surface_id=None):
face_ids = geometry.surfaces[surface_id]["surface_idx"] faces = None
faces = [] if surface_id is not None:
face_ids = geometry.surfaces[surface_id]["surface_idx"]
faces = list(map(lambda face_id: geometry.boundaries[face_id[0]][face_id[1]], face_ids))
else:
faces = geometry.boundaries
for shell, face_id in face_ids: IFC_faces = []
for triangle in geometry.boundaries[shell][face_id]: for face in faces:
faces.append(self.create_IFC_face(IFC_model, triangle)) IFC_faces.append(self.create_IFC_face(IFC_model, face))
shell = IFC_model.create_entity("IfcOpenShell", faces) shell = IFC_model.create_entity("IfcOpenShell", IFC_faces)
IFC_geometry = IFC_model.create_entity("IfcShellBasedSurfaceModel", [shell]) IFC_geometry = IFC_model.create_entity("IfcShellBasedSurfaceModel", [shell])
return IFC_geometry return IFC_geometry
def create_IFC_face(self, IFC_model, face): def create_IFC_face(self, IFC_model, face):
# exterior face
vertices = [] vertices = []
for vertex in face: for vertex in face[0]:
vertices.append(self.vertices[tuple(vertex)]) vertices.append(self.vertices[tuple(vertex)])
polyloop = IFC_model.create_entity("IfcPolyLoop", vertices) polyloop = IFC_model.create_entity("IfcPolyLoop", vertices)
outerbound = IFC_model.create_entity("IfcFaceOuterBound", polyloop, True) outerbound = IFC_model.create_entity("IfcFaceOuterBound", polyloop, True)
return IFC_model.create_entity("IfcFace", [outerbound])
# return if only exterior face
if len(face) == 1:
return IFC_model.create_entity("IfcFace", [outerbound])
# interior face
innerbounds = []
for interior_face in face[1:]:
for vertex in interior_face:
vertices.append(self.vertices[tuple(vertex)])
polyloop = IFC_model.create_entity("IfcPolyLoop", vertices)
innerbounds.append(IFC_model.create_entity("IfcFaceOuterBound", polyloop, True))
return IFC_model.create_entity("IfcFace", [outerbound] + innerbounds)