Try adding: Sketchup.active_model.active_view.invalidate ???

@blruuska said: Dan, Thanks for verifying. It is surprising that NotImplementedError wasn't raised, if that is the case here. Ackh! Yea, something is amiss here. Not sure if we intended to support enumeration type in the initial release of the API - but if that's the cause it should have been NotImplemented. However, I might confuse this with the "choice" type. Maybe something changed in the last moment. I need to investigate.

@icehuli said: Someone might be interested in using c# and .net stuff. I created a very simple example to write a ruby extension in c#. https://bitbucket.org/icehuli/sucsexttutorial can you guide me to run the sample code

Sorry, the official name is "SketchUp C API". "SLAPI" was just an acronym thrown around before I begun which has stuck with me.

Make sure the Outliner window is closed, it SLOWS SketchUp way down.

Some observations..... The sketchup offset tool is not consistent. It does not always provide the same result....sometime gives the left, sometime gives the right. They are slightly different. Both results have two faces, a bigger face and a small one(the hole). The bigger face is selected in both results, while the small one is not selected. On the left, the small one is separated from the bigger face, i.e. the bigger face contains a hole. On the right, the small one is overlapped with the bigger face, i.e. the bigger face does not contain a hole. ....... [image: I7i0_offset_diff.PNG]