These features, based on the code for the Pipe class, allow the user
to simply create a helical sweep within PartDesign workbench.
Sample application is threads, springs, coils, augers, etc.
Also, remove needless requirement for positive cone angle on helixes.
Thanks to @bitacovir for helping with the icons
Thanks to @chennes for review
Thanks to @vosk for review
Thanks to @wwmayer for review
Enforce that links stay within scope for ProfileBased features
This also ensures that the Body itself is not used for creating features within
the body, causing a "Graph not a DAG" error.
The Original BaseFeature implementation had some serious issues with scoped links. It failed completely for e.g. sketches on the BaseFeature as it made a local link to refere to a out of body object. The only solution to make this work correctly is to add a proxy object into the body which is alloed to exactly that, to link outside oof the body. Something like shapebinder.
-Rename Sketchbased to ProfileBased to show new behavior
-Adopt ProfileBased to make the relevant helper functions work with faces too
-Adopt features for unified use of helper functions
-Adopt commands to allow face selection
A hole feature is something needed, however, the current implementation does not use the attacher code which would made it intuitive and compatibel to other workbench tools. A reimplementation is needed.
wmayer