![]() You can use to perform various task like clash detection and ray tracing. next (): break Geometry tree (clash detection/ray tracing etc…) # Since the lists are flattened, you may prefer to group them per face like so depending on your geometry kernel grouped_verts =, verts, verts ] for i in range ( 0, len ( verts ), 3 )] grouped_faces =, faces, faces ] for i in range ( 0, len ( faces ), 3 )] if not iterator. material_ids # Indices of material applied per triangle face e.g. materials # Material names and colour style information that are relevant to this shape material_ids = shape. verts # X Y Z of vertices in flattened list e.g. faces # Indices of vertices per triangle face e.g. initialize (): while True : shape = iterator. iterator ( settings, ifc_file, multiprocessing. get_log ()) else : settings = ifcopenshell. open ( '/path/to/your/file.ifc' ) except : print ( ifcopenshell. Import multiprocessing import ifcopenshell import ifcopenshell.geom try : ifc_file = ifcopenshell. This will process shapes using more than one CPU and is significantly faster. If you have a lot of geometry to process, it is advised to use the geometry iterator. These are documented here.Īll shapes are given an ID to uniquely identify it. There are a series of settings you can apply when creating a shape. Once you have a list of vertices, edges, and faces, you can perform any standard mesh algorithm to do more geometric analysis. # Since the lists are flattened, you may prefer to group them per face like so depending on your geometry kernel grouped_verts =, verts, verts ] for i in range ( 0, len ( verts ), 3 )] grouped_faces =, faces, faces ] for i in range ( 0, len ( faces ), 3 )] create_shape ( settings, element ) faces = shape. by_type ( 'IfcWall' ) settings = ifcopenshell. open ( '/path/to/your/file.ifc' ) element = ifc_file. Import ifcopenshell import ifcopenshell.geom ifc_file = ifcopenshell. The simplest way to get started is to use the create_shape function to convert an element into vertices, edges, and faces. This makes it easier to write generic code for any representation, but may be harder to extract certain geometric features. Regardless of the source format, once it is in a mesh representation, you may use standard mesh geometry processing algorithms to analyse the geometry. The second approach is to use IfcOpenShell's shape processing features, which will convert almost all IFC representations into a triangulated mesh. This requires an in-depth understanding of IFC geometric representations, as well as its many caveats with units and transformations, but can be very simple to extract specific types of geometry. One approach is to traverse the Representation attribute of the IFC element, and parse it yourself. There are two approaches to processing geometry. The usage of IfcOpenShell for geometry processing is currently considered to be moderate to advanced.
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