mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-10 01:41:57 +00:00
84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
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import ifcopenshell
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import ifcopenshell.api
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import ifcopenshell.geom
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import bootstrap
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class TestAssignObject(bootstrap.IFC4):
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def test_no_welding_on_distinct_items(self):
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ifcopenshell.api.run(
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"root.create_entity", self.file, ifc_class="IfcProject", name="Test"
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)
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unit = ifcopenshell.api.run(
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"unit.add_si_unit", self.file, unit_type="LENGTHUNIT"
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)
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ifcopenshell.api.run("unit.assign_unit", self.file, units=[unit])
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context = ifcopenshell.api.run(
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"context.add_context", self.file, context_type="Model"
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)
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element = ifcopenshell.api.run(
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"root.create_entity", self.file, ifc_class="IfcWall"
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)
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def create_extrusion(x, y):
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points = (
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(x + 0.0, y + 0.0),
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(x + 0.0, y + 1.0),
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(x + 1.0, y + 1.0),
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(x + 1.0, y + 0.0),
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(x + 0.0, y + 0.0),
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)
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curve = self.file.createIfcPolyline(
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[self.file.createIfcCartesianPoint(p) for p in points]
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)
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extrusion_direction = self.file.createIfcDirection((0.0, 0.0, 1.0))
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return self.file.createIfcExtrudedAreaSolid(
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self.file.createIfcArbitraryClosedProfileDef("AREA", None, curve),
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self.file.createIfcAxis2Placement3D(
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self.file.createIfcCartesianPoint((0.0, 0.0, 0.0)),
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),
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extrusion_direction,
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1.0,
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)
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extrusions = [create_extrusion(x, 0.0) for x in [0.0, 1.0]]
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element.Representation = self.file.createIfcProductDefinitionShape(
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Representations=[
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self.file.createIfcShapeRepresentation(
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context,
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context.ContextIdentifier,
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"SweptSolid",
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extrusions,
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)
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]
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)
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obj = ifcopenshell.geom.create_shape(
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ifcopenshell.geom.settings(WELD_VERTICES=True), element
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)
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# item_ids is a per-triangle array, so we have 12 triangles per cube
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# even though not documented, the order in representation items should match
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assert (
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obj.geometry.item_ids
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== (extrusions[0].id(),) * 12 + (extrusions[1].id(),) * 12
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)
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# group the vertices
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vs = [
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obj.geometry.verts[i : i + 3] for i in range(0, len(obj.geometry.verts), 3)
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]
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# welding should not happen between distinct items so the total number of verts should be 2 times 8
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assert len(vs) == 16
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# even though there are only 12 unique vertices as the cubes are touching
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assert len(set(vs)) == 12
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if __name__ == "__main__":
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import pytest
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pytest.main(["-vvsx", __file__])
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