I'm opening this to register and follow investigations. Below is a simple IFC file containing 4 columns, that share the same representation (mapped representation), with a 1m x 0.5m spacing between them (1m on red axis, 0.5m on green).
When opening this file in Revit, however, the spacing has doubled size and becomes 2m x 1m. ArchiCAD, FreeCAD and IfcPlusPlus open the file correctly.
When editing the family, one can see that the base column shape is placed at -1m,-0.5m from the origin point, which is likely the source of the problem. In the IFC file, however, I fail to see what could have provoked this problem. The base profile (polyline #33) is correctly drawn around the center point, then extruded in Z axis, using a (0,0,0) placement. Each of the 4 column object uses a mapped representation of this extrusion, and a correct placement: (0,0), (1,0), (1,0.5) and (0,0.5).
ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('ViewDefinition [CoordinationView]'),'2;1');
FILE_NAME('4 columns from freecad.ifc','2018-07-27T20:05:47',('Yorik van Havre','[email protected]'),('uncreated.net'),'IfcOpenShell 0.5.0-dev','IfcOpenShell 0.5.0-dev','');
FILE_SCHEMA(('IFC4'));
ENDSEC;
DATA;
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ENDSEC;
END-ISO-10303-21;
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