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Get IfcBeam coordinates in 3D space

1. J by jemanik on 15 Jan 2025, edited 11 Feb 2025 #

   Hello there,

   can I get the axis (respective the start and end point of the axis) of an IFCBeam in 3D space directly using ifcopenshell?

   I just know how to get the localI fcLocalPlacement and IfcAxis2Placement3D

       model = ifcopenshell.open("20240820.ifc")
   
       beams = model.by_type("IfcBeam")
   
       element = beams[0]
   
       start_point = element.ObjectPlacement.RelativePlacement.Location
   
       endd_point = element.ObjectPlacement.RelativePlacement.Location
   
   axis = element.ObjectPlacement.RelativePlacement.Axis

   

   But I would like to have just the the beam axis in 3D space

   Best,

   Niklas

2. A by Andrej730 on 11 Feb 2025 #

   https://docs.ifcopenshell.org/autoapi/ifcopenshell/util/placement/index.html#ifcopenshell.util.placement.get_local_placement to get beam placement matrix and use it's Z basis vector for beam axis.

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