47 lines
2.2 KiB
Python
47 lines
2.2 KiB
Python
import ifcopenshell
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from ifcopenshell.api import run
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# Create a blank model
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model = ifcopenshell.file()
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# All projects must have one IFC Project element
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project = run("root.create_entity", model, ifc_class="IfcProject", name="My Project")
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# Geometry is optional in IFC, but because we want to use geometry in this example, let's define units
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# Assigning without arguments defaults to metric units
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run("unit.assign_unit", model)
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# Let's create a modeling geometry context, so we can store 3D geometry (note: IFC supports 2D too!)
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context = run("context.add_context", model, context_type="Model")
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# In particular, in this example we want to store the 3D "body" geometry of objects, i.e. the body shape
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body = run("context.add_context", model, context_type="Model",
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context_identifier="Body", target_view="MODEL_VIEW", parent=context)
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# Create a site, building, and storey. Many hierarchies are possible.
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site = run("root.create_entity", model, ifc_class="IfcSite", name="My Site")
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building = run("root.create_entity", model, ifc_class="IfcBuilding", name="Building A")
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storey = run("root.create_entity", model, ifc_class="IfcBuildingStorey", name="Ground Floor")
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# Since the site is our top level location, assign it to the project
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# Then place our building on the site, and our storey in the building
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run("aggregate.assign_object", model, relating_object=project, product=site)
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run("aggregate.assign_object", model, relating_object=site, product=building)
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run("aggregate.assign_object", model, relating_object=building, product=storey)
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# Let's create a new wall
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wall = run("root.create_entity", model, ifc_class="IfcWall")
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# Give our wall a local origin at (0, 0, 0)
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run("geometry.edit_object_placement", model, product=wall)
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# Add a new wall-like body geometry, 5 meters long, 3 meters high, and 200mm thick
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representation = run("geometry.add_wall_representation", model, context=body, length=5, height=3, thickness=0.2)
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# Assign our new body geometry back to our wall
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run("geometry.assign_representation", model, product=wall, representation=representation)
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# Place our wall in the ground floor
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run("spatial.assign_container", model, relating_structure=storey, product=wall)
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# Write out to a file
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model.write("output.ifc")
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