Hey, im trying to make simplest infrastructure file, to practice designing with ifcopenshell. I thougth that bonsai can display it, but only alignment is displayed. Validation on bsi goes ok. Someone can tell me what i'm doing wrong?
Yes, bonsai does support IfcSectionedSolidHorizontal. I took a look at your file but could not determine what needs to be revised. I confirmed that it is an issue with your data and not something in bonsai. ifcopenshell.geom.create_shape() returns an empty object. A few things I had suspected:
-
You use IfcCompositeCurve #53 as the directrix which is 2D and might not generate 3D geometry. However changing to IfcGradientCurve #63 did not solve it.
-
You use IFCPARAMETERVALUE(200.) and (500.) for DistanceAlong on the linear placement of the cross sections. I experimented with changing these to be IFCLENGTHMEASURE since the overall alignment is ~993m. However adjusting to this data type causes a segfault.
I have attached a working example that does display correctly in bonsai. Hopefully this helps with debugging your model.
Now I see that my IfcAlignmentSegment have no ObjectPlacement. I though that if i have local placement at base object - IfcAlignment, that's enough. It's meens that every nested object should have the same local placement?