We really like your Viewer and usually recommend it as independent viewer to our users, who use it to check IFC received from third-party software as well as IFC exported from our own Software: Strakon.
With an increasing usage of IFC4 we keep getting complains about failures in our IFC-export, that actually turn out to be representing-failures in BIMvision (see attached image – at least I was told it was uploaded successfully, although I can’t see it):
1) BIMvision fails to represent IfcArcIndex as an arc, but creates to straight lines connecting the three points defining the arc. This results in a column with square-profile instead of circle-profile for example.
2) BIMvision seems to not recognize object-color defined via IfcStyledItem, IfcSurfaceStyle, IfcSurfaceStyleShading and IfcColourRgb:
It would be great if you could fix these two issues, so BIMvision will stay the best viewer available and we can keep recommending it to our users.
DICAD Systeme GmbH