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https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-13 10:57:49 +00:00
Dion Moult
72 lines
2.9 KiB
Python
72 lines
2.9 KiB
Python
import ifcopenshell.util.unit
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class Usecase:
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def __init__(self, file, **settings):
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self.file = file
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self.settings = {
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"map_conversion": {},
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"projected_crs": {},
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"true_north": [],
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"map_unit": "",
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}
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for key, value in settings.items():
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self.settings[key] = value
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def execute(self):
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map_conversion = self.file.by_type("IfcMapConversion")[0]
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projected_crs = self.file.by_type("IfcProjectedCRS")[0]
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for name, value in self.settings["map_conversion"].items():
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setattr(map_conversion, name, value)
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for name, value in self.settings["projected_crs"].items():
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setattr(projected_crs, name, value)
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self.remove_existing_map_unit(projected_crs)
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self.set_map_unit(projected_crs)
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self.set_true_north()
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def remove_existing_map_unit(self, projected_crs):
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if projected_crs.MapUnit and len(self.file.get_inverse(projected_crs.MapUnit)) == 1:
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# TODO: go deeper for conversion units
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self.file.remove(projected_crs.MapUnit)
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def set_map_unit(self, projected_crs):
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if not self.settings["map_unit"]:
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return
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if "METRE" in self.settings["map_unit"]:
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projected_crs.MapUnit = self.file.createIfcSIUnit(
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None,
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"LENGTHUNIT",
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ifcopenshell.util.unit.get_prefix(self.settings["map_unit"]),
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ifcopenshell.util.unit.get_unit_name(self.settings["map_unit"]),
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)
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return
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value_component = self.file.create_entity(
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"IfcReal", **{"wrappedValue": ifcopenshell.util.unit.si_conversions[self.settings["map_unit"]]}
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)
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si_unit = self.file.createIfcSIUnit(None, "LENGTHUNIT", None, "METRE")
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projected_crs.MapUnit = self.file.createIfcConversionBasedUnit(
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self.file.createIfcDimensionalExponents(1, 0, 0, 0, 0, 0, 0),
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"LENGTHUNIT",
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self.settings["map_unit"],
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self.file.createIfcMeasureWithUnit(value_component, si_unit),
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)
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def set_true_north(self):
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if self.settings["true_north"] == []:
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return
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for context in self.file.by_type("IfcGeometricRepresentationContext", include_subtypes=False):
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if context.TrueNorth:
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if len(self.file.get_inverse(context.TrueNorth)) != 1:
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context.TrueNorth = self.file.create_entity("IfcDirection")
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else:
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context.TrueNorth = self.file.create_entity("IfcDirection")
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direction = context.TrueNorth
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if self.settings["true_north"] is None:
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context.TrueNorth = self.settings["true_north"]
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elif context.CoordinateSpaceDimension == 2:
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direction.DirectionRatios = self.settings["true_north"][0:2]
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else:
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direction.DirectionRatios = self.settings["true_north"][0:2] + [0.0]
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