Feature request: more granular `ProcessorMergeParts` filter

[hartikainen]

Thanks for the awesome awesome tool! I've exported several models using with ProcessorMergeParts recently, and noticed that it would be really convenient to be able to specify which link parts get merged and which do not. Right now, the processor enables toggling between visual or collision (or both). Would make sense to enable some more flexible filtering, e.g. based on regex of the link name? Is there perhaps a way to work around this issue currently?

[Gregwar]

Hello,

I believe this is currently not possible. Maybe a syntax similar to ignore could be used: https://onshape-to-robot.readthedocs.io/en/latest/config.html#ignore-default

However, I'm not sure whether the matching should be done by part names (e.g. that you want merged everywhere they appear) or by body names where you want all the subparts to be merged, this really depends on people use case

[hartikainen]

Thanks for the quick response! Syntax similar to ignore was what I was thinking too. My initial intuition was that the filtering could be done on the body/link level, but that would indeed be a bit limiting. I can update here if I come up with other ideas.

For the specific use case in my latest model, I solved the issue by creating my own preprocessor subclassed from ProcessorMergeParts and calling its self.merge_parts(link) for the specific links I wanted to be merged.

[Gregwar]

Hello, I know it's been really long, but I opened a PR that address this, don't hesitate to provide feedbacks and confirm it covers your use cases

[Gregwar]

See #185