subtractions of extrude_along_path() objects do not show correctly in 'Preview'.

[asdfstuart]

Subtracting an extruded object from an OpenSCAD object or another extruded object seem to confuse the 'Preview' viewer. The models render correctly and show correctly in the 'Surfaces' viewer.
I am using version 1.1.1 with the latest extrude_along_path.py containing the fixes for issue #18
I added the function extrude_example_subtractions() to the attached path_extrude_example.py file. The problems show up most clearly if you rotate to look up the +y axis.

path_extrude_example.zip
7.

[etjones]

Thanks for including that function; it was really useful to see what was happening.

When I set the convexity = 10 argument in the created polygons, the visualization issue is resolved. Looking at the polyhedron() docs, it seems like convexity=10 would be a more reasonable default value that wouldn't impact visualization speed too much. I'll leave this open until I've made a pass at that.

[asdfstuart]

Thanks for the quick fix, it worked for my model as well. Also, any convexity other than 1 worked for my model.
You are welcome for the function. I really appreciate your extrude_along_path() function, it is useful and saves me a lot of time. I am glad I could return the favor of in a small way.