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For `IfcMaterialLayerSetUsage`s, is it possible to realize a negative `DirectionSense`?

1. T by theoryshaw on 26 Jul 2023, edited 26 Jul 2023 #

   For IfcMaterialLayerSetUsages, is it possible to realize a negative DirectionSense?

   https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcMaterialLayerSetUsage.htm

   Would be nice to have this for IfcSlabs, that is, if the origin is at the top of slab, setting the floor elevation is a lot easier by just setting the Blender's Z value.

   https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcMaterialLayerSetUsage.htm

2. O by Owura_qu on 26 Jul 2023, edited 27 Jul 2023 # +1 votes

   @theoryshaw said:

   For IfcMaterialLayerSetUsages, is it possible to realize a negative DirectionSense?

   Something I have also been tweaking in the 'IfcMaterialLayerSetUsage' for IfcSlab but I don't get any results and for some time now I thought I was missing something with the AXIS direction or not doing it right. Now I know am not alone ?.

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