Undocumented Hidden Featurescript

Chris_D_Mentes_001

So far I have discovered:
-opCreateOutline (creates flattened surace of input topology)
-opExtractSurface (Used within opOffsetSurface)
-?? notation for managing undefined variables
-switch function

All of which have no official documentation or any documentation what so ever. I also know that there is "Button" functionality which I'm excited to try out but can't use yet because there's no documentation for it. What else has everyone discovered that has no documentation?

GregBrown

Just a note on this - yes, there are undocumented and internal (marked clearly as such) functions in the standard library, and there are reasons for us to have them marked this way. So while we won't stop you from using them, we would caution against relying on them for a custom feature you intend to creatre.

Caden_Armstrong

Theres a ton of stuff that isn't document, but you've found what I consider the two more important functions. Granted, be careful with opCreateOutline, I've had some issues in the past with getting it to work. Its probably undocumented because it can fail unexpectedly.

How sheet metal works, hole properties, frame cut lists, etc are all "not documented" but can easily be found in the std code and used in some way.

getRemainderPatternTransform is used to make sure that your feature can be selected by a feature pattern.
Not document, but good practice, and maybe should be documented.

Features can take an input "asVersion" to let you run older versions (Not sure why you would)

opBoolean can take in an "accuracy" parameter

opBoolean can also work with two sheet bodies to find the intersection if you use "allowSheets":true

opEdgeChange exists…but my notes have no description, so no idea what it does.

?? might not be in the docs but it was definitely in the release announcement.

We were able to piece together how buttons work in this thread (sorry Onshape):
https://forum.onshape.com/discussion/comment/104730#Comment_104730
and I have an example here:
https://cad.onshape.com/documents/f8ba2ea9ce957e1435682607/w/1f842302f05d8c6657cbb20e/e/7e04c3ddd5648a108862cafa

_anton

( https://cad.onshape.com/FsDoc/tokens.html does mention ??, BTW, though we clearly have some updating to do on switch.)

NeilCooke

@Caden_Armstrong opEdgeChange is the opposite of opExtendSheetBody, i.e. to negative offset the edges of a sheet body. You can see it in action in the Fill Pattern feature.

Caden_Armstrong

@NeilCooke Oh good to know. Bit weird that opExtendSheetBody doesn't just support negative offsets.

Also, opExtendSheetBody…another undocumented operation that is super useful.

Chris_D_Mentes_001

To add to the list I just remembered a small but usefull detail: the "round" function can take a value with units using:

round ( "Value with Units" , millimeter )

This is not documented but took me suprisingly long to figure out.

Chris_D_Mentes_001

@_anton fair enough, I unjustifiably add "??" to the list.