public void ConvertIfcCircleHollowProfileToBRepTest() { using (var m = IfcModelBuilder.CreateandInitModel()) { using (var txn = m.BeginTransaction()) { //add a shape //Create a Definition shape to hold the geometry var shape = m.Instances.New <IfcShapeRepresentation>(); shape.ContextOfItems = m.IfcProject.ModelContext(); shape.RepresentationType = "Brep"; shape.RepresentationIdentifier = "Body"; //Create a Product Definition and add the model geometry to the wall var rep = m.Instances.New <IfcProductDefinitionShape>(); rep.Representations.Add(shape); var building = m.Instances.OfType <IfcBuilding>().FirstOrDefault(); Assert.IsNotNull(building, "Failed to find Building"); building.Representation = rep; var block = IfcModelBuilder.MakeExtrudedAreaSolid(m, IfcModelBuilder.MakeCircleHollowProfileDef(m, 1000, 500), 3000); var solid = _xbimGeometryCreator.CreateSolid(block); var brep = _xbimGeometryCreator.CreateFacetedBrep(m, solid); shape.Items.Add(brep); var solid2 = _xbimGeometryCreator.CreateSolidSet(brep); //round trip it txn.Commit(); try { //Uncomment below to see the results in Ifc //m.SaveAs("brep.ifc", XbimStorageType.IFC); } catch (Exception) { Assert.IsTrue(false, "Failed to save the results to Ifc"); } Assert.IsTrue(solid2.Count == 1, "Expected one solid"); IfcCsgTests.GeneralTest(solid2.First); Assert.IsTrue(brep.Outer.CfsFaces.Count == solid2.First.Faces.Count, "Number of faces in round tripped solid is not the same"); } } }